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5ddbe8e4 | 1 | Internet Systems Consortium DHCP Distribution |
95d14836 TM |
2 | Version 4.4.3 |
3 | 9 March 2022 | |
4 | Release Notes | |
72c7bd79 | 5 | |
95d14836 | 6 | NEW FEATURES |
16449d9c | 7 | |
e180ae07 | 8 | Please note that that ISC DHCP is licensed under the Mozilla Public |
83c52925 TM |
9 | License, MPL 2.0. Please see https://www.mozilla.org/en-US/MPL/2.0/ to read |
10 | the MPL 2.0 license terms. | |
37ec5845 | 11 | |
f5af4b70 | 12 | NOTE: The client and relay components are now End-Of-Life. |
83c52925 | 13 | 4.4.3 is the final release for those components. |
4aa6129a | 14 | |
e180ae07 | 15 | For information on how to install, configure, and run this software, as |
01a54c17 EH |
16 | well as how to find documentation and report bugs, please consult the |
17 | README file. | |
ca4606b5 | 18 | |
e180ae07 SG |
19 | ISC DHCP uses the standard GNU configure command for installation. Please review the |
20 | output of `./configure --help` to see what options are available. | |
fe5b0fdd | 21 | |
e180ae07 | 22 | The system has only been tested on Linux and FreeBSD, and may not work on |
447d03cc SG |
23 | other platforms. Please subscribe to the dhcp-users mailing list at |
24 | https://lists.isc.org/mailman/listinfo/dhcp-users and report any problems | |
25 | and/or suggested fixes to dhcp-users@lists.isc.org. | |
98bd7ca0 | 26 | |
fef8c6f0 SR |
27 | ISC DHCP is open source software maintained by Internet Systems |
28 | Consortium. This product includes cryptographic software written | |
29 | by Eric Young (eay@cryptsoft.com). | |
30 | ||
3d53b2f2 | 31 | Changes since 4.4.2-P1 (New Features) |
397b2947 | 32 | |
e180ae07 SG |
33 | - Two new OMAPI function calls were added, `dhcpctl_timed_connect()` |
34 | and `dhcpctl_timed_wait_for_completion()`. These provide timed | |
e69d9b5b WW |
35 | versions of creating a connection and waiting for an operation |
36 | to complete. | |
e180ae07 | 37 | [GitLab #76] |
e69d9b5b | 38 | |
e180ae07 | 39 | - The BIND libraries have been updated to the latest version, 9.11.36. This fixes a number |
83c52925 TM |
40 | of compilation issues on various systems, including OpenWRT. Thanks to |
41 | Philip Prindeville for testing on OpenWRT. | |
e180ae07 | 42 | [GitLab #218, #171, #180, #192] |
29254896 | 43 | |
e180ae07 | 44 | - Support was added for the new DHCPv4 option v6-only-preferred, specified |
83c52925 TM |
45 | in RFC 8925. A new reason code, V6ONLY, was added to the client script |
46 | and the client Linux script sample was updated. | |
e180ae07 | 47 | [GitLab #132] |
397b2947 | 48 | |
3d53b2f2 | 49 | Changes since 4.4.2-P1 (Bug Fixes) |
6c7e6157 | 50 | |
e180ae07 SG |
51 | - Minor corrections were made to allow compilation under gcc 10. |
52 | [GitLab #117] | |
6c7e6157 | 53 | |
e180ae07 SG |
54 | - The logic in dhclient that causes it to decline DHCPv4 leases if the |
55 | client script exits abnormally (i.e. crashes) has been corrected. | |
56 | [GitLab #123] | |
33e51761 | 57 | |
e180ae07 | 58 | - The limit on the size of a lease file that can be loaded at startup |
2e914d00 | 59 | is now only enforced on 32-bit systems. |
e180ae07 | 60 | [GitLab #92] |
2e914d00 | 61 | |
83c52925 TM |
62 | - The PRNG initialization has been improved. It now uses the configure flag |
63 | `--with-randomdev=PATH`, which specifies the device from which to read the | |
64 | initial seed. That is typically `/dev/random` (the default value) or | |
e180ae07 | 65 | `/dev/urandom`, but may be specified otherwise on the local system. The old |
83c52925 TM |
66 | behavior can be forced by disabling this feature (`--with-randomdev=no`). |
67 | If the initialization is disabled or reading from the random device fails, | |
68 | the previous algorithm (retrieve the last four bytes of hardware addresses | |
69 | from all network interfaces that have them, and use the current time and | |
70 | process ID) is used. | |
e180ae07 | 71 | [GitLab #197] |
629a4524 | 72 | |
e180ae07 SG |
73 | - A minor dhclient code fix was made to remove compilation warnings. |
74 | [GitLab #190] | |
0c03eaef | 75 | |
e180ae07 SG |
76 | - The hard-coded MD5 algorithm name was removed in OMAPI connection logic. |
77 | Previously, using any other algorithm via a key-algorithm statement would | |
78 | allow OMAPI connections to be made, but subsequent actions such as updating | |
79 | an object would fail. | |
80 | [GitLab #148] | |
7de26fe7 | 81 | |
9ea5696d TM |
82 | - The parallel build has been improved. Thanks to Sergei Trofimovich for |
83 | the patch. The parallel build is still experimental, as officially the | |
e180ae07 SG |
84 | BIND 9 code does not support the parallel build for libraries. |
85 | [GitLab #91] | |
9ea5696d | 86 | |
e180ae07 SG |
87 | - Handling of LDAP options (`ldap-gssapi-principal` and `ldap-gssapi-keytab`) |
88 | has been improved. This is contributed code that has not been tested by ISC. Thank | |
0427f30d | 89 | you to Petr Mensik and Pavel Zhukov for the patches! |
e180ae07 | 90 | [GitLab !56,!75] |
0427f30d | 91 | |
e180ae07 SG |
92 | - It is now possible to use `option -g ipaddr` in the dhcrelay to replace the giaddr sent to |
93 | clients with the given ipaddr, to work around bogus clients like Solaris 11 | |
94 | grub which use giaddr instead of the announced router (3) to set up their | |
b5fafe12 | 95 | default route. Thanks to Jens Elkner for the patch! |
e180ae07 | 96 | [GitLab #223, !86, !92] |
b5fafe12 | 97 | |
3d53b2f2 TM |
98 | Changes since 4.4.2 (Bug Fixes) |
99 | ||
100 | - Corrected a buffer overwrite possible when parsing hexadecimal | |
101 | literals with more than 1024 octets. | |
102 | [Gitlab #182] | |
103 | CVE: CVE-2021-25217 | |
104 | ||
4ad524bd | 105 | Changes since 4.4.2b1 (Bug Fixes) |
e4b6b033 TM |
106 | |
107 | - Added a clarification on DHCPINFORMs and server authority to | |
108 | dhcpd.conf.5 | |
109 | [Gitlab #37] | |
110 | ||
5c23b618 TM |
111 | - Only emit lease scrubbing log messages when DEBUG_FAILOVER_MESSAGES |
112 | is defined. | |
113 | [Gitlab #72] | |
114 | ||
4ad524bd TM |
115 | - Added the interface name to socket initialization failure log messages. |
116 | Prior to this the log messages stated only the error reason without | |
117 | stating the target interface. | |
118 | [Gitlab #75] | |
119 | ||
bba906f6 | 120 | - Corrected buffer pointer logic in dhcrelay functions that manipulate |
afb66401 TM |
121 | agent relay options. Thanks to Thomas Imbert of MSRC Vulnerabilities |
122 | & Mitigations for reporting the issue. | |
83c52925 | 123 | [Gitlab #71] |
bba906f6 | 124 | |
39788b3d TM |
125 | - Corrected unresolved symbol errors building relay_unittests when |
126 | configured to build using libtool. | |
83c52925 | 127 | [Gitlab #80] |
39788b3d | 128 | |
cce04313 | 129 | Changes since 4.4.1 (New Features) |
a5b21e16 TM |
130 | |
131 | - A new configuration parameter, ping-cltt-secs (v4 operation only), has | |
132 | been added to allow the user to specify the number of seconds that must | |
133 | elapse since CLTT before a ping check is conducted. Prior to this, the | |
0cd94b5e | 134 | value was hard coded at 60 seconds. Please see the server man pages for |
a5b21e16 TM |
135 | a more detailed discussion. |
136 | [ISC-Bugs #36283] | |
cce04313 | 137 | |
cb89a691 TM |
138 | - A new configuration parameter, ping-timeout-ms (v4 operation only), |
139 | has been added that allows the user to specify the amount of time | |
140 | the server waits for a ping-check response in milliseconds rather | |
141 | than in seconds (via ping-timeout). When greater than zero, the value | |
142 | of ping-timeout-ms will override the value of ping-timeout. Thanks | |
143 | to Jay Doran from Bluecat Networks for suggesting this feature. | |
0cd94b5e | 144 | [Gitlab #10] |
cb89a691 | 145 | |
2ca63671 TM |
146 | - An experimental tool called, Keama (KEA Migration Assistant), which helps |
147 | translate ISC DHCP configurations to Kea configurations, is now included | |
148 | in the distribution. | |
149 | [Gitlab #34] | |
150 | ||
cce04313 TM |
151 | Changes since 4.4.1 (Bug Fixes) |
152 | ||
153 | - Corrected a misuse of the BIND9 DDNS API which caused DDNS updates to be | |
154 | carried out over TCP rather than UDP. The coding error was exposed by | |
155 | migration to BIND9 9.11. Thanks to Jinmei Tatuya at Infoblox for | |
156 | reporting the issue. | |
157 | [ISC-Bugs #47757] | |
158 | ||
c07eb442 TM |
159 | - Bind9 now defaults to requiring python to build. The Makefile for |
160 | building Bind9 when bundled with ISC DHCP was modified to turn off | |
161 | this dependency. | |
0cd94b5e | 162 | [Gitlab #3] |
9ef78585 TM |
163 | |
164 | - Corrected a dual-stack mixed-mode issue that occurs when both | |
165 | ddns-guard-id-must-match and ddns-other-guard-is-dynamic | |
166 | are enabled and that caused the server to incorrectly interpret | |
167 | the presence of a guard record belonging to another client as | |
168 | a case of no guard record at all. Thanks to Fernando Soto | |
169 | from BlueCat Networks for reporting this issue. | |
0cd94b5e | 170 | [Gitlab #1] |
c07eb442 | 171 | |
1c779d3b TM |
172 | - Corrected a compilation issue that occurred when building without DNS |
173 | update ability (e.g. by undefining NSUPDATE). | |
0cd94b5e | 174 | [Gitlab #16] |
1c779d3b | 175 | |
fce94f06 TM |
176 | - Corrected an issue that was causing the server, when running in |
177 | DHPCv4 mode, to segfault when class lease limits are reached. | |
dfcbe359 TM |
178 | Thanks to Peter Nagy at Porion-Digital for reporting the matter |
179 | and submitting a patch. | |
0cd94b5e | 180 | [Gitlab #13] |
fce94f06 | 181 | |
753d458b | 182 | - Made minor changes to eliminate warnings when compiled with GCC 9. |
71277027 | 183 | Thanks to Brett Neumeier for bringing the matter to our attention. |
0cd94b5e TM |
184 | [Gitlab #15] |
185 | ||
186 | - Fixed potential memory leaks in parser error message generation | |
187 | spotted by Coverity, CIDs: 1448191, 1448193, 1448194, 1448195 | |
188 | [Gitlab #30] | |
189 | ||
190 | - Updated URL of IEEE oui.txt in contrib/dhcp-lease-list.pl. Thanks | |
191 | to Tommy Smith for contributing the patch. | |
192 | [Gitlab #26] | |
193 | ||
194 | - Fixed define flags when using SO_BINDTODEVICE. Thanks to Joe LeVeque for | |
195 | reporting the issue. | |
196 | [GitLab #19] | |
197 | ||
198 | - Applied a patch from OpenBSD to always set the scope id of outbound | |
199 | DHPCv6 packets. Note this change only applies when compiling under | |
200 | OpenBSD. Thanks to Brad Smith at OpenBSD from bringing it to our | |
201 | attention. | |
202 | [Gitlab #33] | |
203 | ||
204 | - Modified dhclient to not discard config file leases that are | |
205 | duplicates of server-provided leases and to retain such leases | |
206 | after they have been used as the fallback active lease and | |
207 | DHCP service has been restored. This allows them to be used | |
82e0ea57 | 208 | more than once during the lifetime of a dhclient instance. |
0cd94b5e TM |
209 | This applies to DHCPv4 operation only. |
210 | [Gitlab #9] | |
211 | ||
212 | - Corrected a number of reference counter and zero-length buffer leaks. | |
afb66401 TM |
213 | Thanks to Christopher Ertl of MSRC Vulnerabilities & Mitigations for |
214 | pointing them out. | |
0cd94b5e TM |
215 | [Gitlab #57] |
216 | ||
217 | - Closed a small window of time between the installation of graceful | |
218 | shutdown signal handlers and application context startup, during which | |
219 | the receipt of shutdown signal would cause a REQUIRE() assertion to | |
220 | occur. Note this issue is only visible when compiling with | |
221 | ENABLE_GENTLE_SHUTDOWN defined. | |
222 | [Gitlab #53] | |
223 | ||
224 | - Corrected a buffer overflow that can occur when retrieving zone | |
225 | names that are more than 255 characters in length. | |
226 | [Gitlab #20] | |
227 | ||
228 | - The "d" domain name option format was incorrectly handled as text | |
229 | instead of RFC 1035 wire format. Thanks to Jay Doran at BlueCat Networks | |
230 | for reporting this issue. | |
231 | [Gitlab #2] | |
232 | ||
233 | - Improved the error message issued when a host declaration has both | |
234 | a uid and a dhcp-client-identifier. Server configuration parsing will | |
235 | now fail if a host declaration specifies more than one uid. | |
236 | [Gitlab #7] | |
753d458b | 237 | |
4adcee93 TM |
238 | - Updated developer's documentation on building and running unit tests. |
239 | Removed support for --with-atf=bind as BIND9 no longer bundles in ATF | |
240 | source. | |
241 | [Gitlab #35] | |
242 | ||
83175640 TM |
243 | - Fixed a syntax error in ldap.c which cropped up under Ubuntu |
244 | 18.04.1/gcc 7.4.0. Thanks to Charles Hedrick for pointing it out. | |
245 | [Gitlab #51] | |
246 | ||
2661204d TM |
247 | - Added clarification to dhcp-options.5 section on ip-address values |
248 | describing the first-use DNS resolution of options with hostnames as | |
249 | values (e.g. next-server). | |
250 | [Gitlab #28] | |
251 | ||
9a2f9db5 TM |
252 | - The option format for the server option omapi-key was changed to a |
253 | format type 'k' (key name); while server options ldap-port and | |
254 | ldap-init-retry were changed to 'L' (unsigned 32-bit integer). These | |
255 | three options were inadvertantly broken when the 'd' format content | |
256 | was changed to comply with RFC 1035 wire format (see Gitlab #2). | |
257 | [Gitlab #68] | |
258 | ||
cce04313 TM |
259 | Changes since 4.4.0 (New Features) |
260 | - none | |
cce04313 | 261 | Changes since 4.4.0 (Bug Fixes) |
6826003b TM |
262 | |
263 | - A delayed-ack value of 0 (the default), now correctly disables the delayed | |
264 | feature. A change in 4.4.0 prohibited lease updates marking leases active | |
265 | from be written to the lease file when delayed-ack is 0. This in turn, | |
266 | caused servers to lose active lease assignments upon restart. | |
267 | [ISC-Bugs #47141] | |
268 | ||
197b26f2 TM |
269 | ! Option reference count was not correctly decremented in error path |
270 | when parsing buffer for options. Reported by Felix Wilhelm, Google | |
271 | Security Team. | |
272 | [ISC-Bugs #47140] | |
c5931725 TM |
273 | CVE: CVE-2018-5733 |
274 | ||
275 | ! Corrected an issue where large sized 'X/x' format options were causing | |
276 | option handling logic to overwrite memory when expanding them to human | |
277 | readable form. Reported by Felix Wilhelm, Google Security Team. | |
278 | [ISC-Bugs #47139] | |
279 | CVE: CVE-2018-5732 | |
197b26f2 | 280 | |
d5118758 TM |
281 | - Added use of new Bind9 compatibility header files, that are now necessary |
282 | to supply type definitions for primitive data types, removed from Bind9 | |
283 | proper. Altered util/bind.sh to pull from Bind9 repo on gitlab. | |
284 | [ISC-Bugs #48072] | |
285 | [ISC-Bugs #48071] | |
286 | ||
d394b602 TM |
287 | Changes since 4.4.0b1 (New Features) |
288 | ||
289 | - Duplicate address detection when binding to a new IPv6 address was added | |
290 | to the following dhclient scripts: linux,freebsd,netbsd,openbsd, and macos. | |
291 | The scripts will check for DAD errors after binding to a new IPv6 address | |
292 | for at most --dad-wait-time seconds. If a DAD error is detected the script | |
293 | will exit with a value of 3, instructing dhclient to decline the address. If | |
294 | dad-wait-time is zero (the default), DAD error checking is not peformed. | |
295 | [ISC-Bugs 46805] | |
296 | ||
efd3b1e2 TM |
297 | - Support for sending and receiving additional DHCP4 options has been added |
298 | to both the dhcpd and dhclient. Specifically: option codes 93,94, and 97 | |
299 | (RFC 4578); code 150 (RFC 5859); and codes 209,219, and 211 (RFC 5071). | |
300 | Beyond configuring, sending, requesting, and receiving these options neither | |
301 | server nor client apply any additional logic based on their values. | |
302 | Thanks to Peter Lewis for requesting this change. | |
303 | [ISC-Bugs 47062] | |
304 | ||
d638452e TM |
305 | Changes since 4.4.0b1 (Bug Fixes) |
306 | ||
307 | - Added clarifying text to dhcpd.conf.5 explaining the class match expressions | |
308 | cannot rely on the results of executable statements. | |
309 | [ISC-Bugs #45451] | |
310 | ||
db4e4aa2 TM |
311 | - Fixed a bug which causes dhcpd and dhclient to crash on certain |
312 | systems when given relative path names for lease or pid files on | |
313 | the command line. Affected systems are those on which the C library | |
314 | function, realpath() does not support a second parameter value of | |
315 | NULL (see manpages for realpath(3)). | |
316 | [ISC-Bugs #46957] | |
317 | ||
b94669fa TM |
318 | - Fixed a build issue when building with embedded BIND9 under OpenBSD that |
319 | was causing BIND9 build to not generate dns/enumclass.h and dns/enumtype.h. | |
320 | [ISC-Bugs #46971] | |
321 | ||
de964f22 TM |
322 | - Added <dhcp>/m4/README to the distribution tarball. Some versions of |
323 | ac_local() treat the absence of the m4 subdirectory as error rather than | |
324 | warning. This was causing the call to autoreconf, necessary for building | |
325 | with libtool, to fail. | |
326 | [ISC-Bugs #47075] | |
327 | ||
4aa6129a | 328 | Changes since 4.4.0a1 (New Features) |
7512d88b | 329 | |
4aa6129a TM |
330 | - Added experimental support for relay port (draft-ietf-dhc-relay-port-10.txt) |
331 | feature for DHCPv4, DHCPv6 and DHCPv4-over-DHCPv6. Relay port has to be | |
332 | enabled at compile time via --enable-relay-port and is fully backward | |
333 | compatible (i.e. works with previous implementations of servers and relays | |
334 | using the standard ports). A new --rp <relay-port> command line option | |
335 | specifies to dhcrelay an alternate source port for upstream (i.e. toward | |
336 | the server) messages. Thanks to Naiming Shen and Enke Chen of Cisco | |
337 | systems for submitting these patches. | |
338 | [ISC-Bugs #44535] | |
339 | ||
340 | - Added --release-on-roam to dhcpd server. When enabled and the server detects | |
341 | that a DHCPv6 client (IAID+DUID) has roamed to a new network, it will release | |
342 | the pre-existing leases on the old network and emit a log statement similar | |
343 | to the following: | |
344 | ||
345 | "Client: <id> roamed to new network, releasing lease: <address>" | |
346 | ||
347 | The server will carry out all of the same steps that would normally occur | |
348 | when a client explicitly releases a lease. This behavior is disabled by | |
349 | default and may only be specified globally. Prior to this the server renders | |
350 | the leases unavailable until they expire or the server is restarted. Clients | |
351 | that need leases in multiple networks must supply a unique IAID in each IA. | |
352 | When release-on-roam is disabled (the default) the server maintains the | |
353 | prior behavior of making such leases unavailable until they expire or the | |
354 | server is restarted. Clients that need leases in multiple networks must | |
355 | supply a unique IAID in each IA. This parameter may only be specified at | |
356 | the global level. Thanks to Fernando Soto from BlueCat Networks for | |
357 | suggesting this change. | |
358 | [ISC-Bugs #44576] | |
359 | [ISC-Bugs #46849] | |
360 | ||
361 | - Support for delayed-ack is now compiled in by default. Prior to this | |
362 | it had to be enabled at compile time via --enable-delayed-acks. The | |
363 | default value for delayed-ack, however, has been changed from 28 to 0 | |
364 | (i.e. disabled). This was done to minimize the impact on users not | |
365 | currently using the feature. Please note that the delayed-ack feature | |
366 | is not currently compatible with support for DHPCv4-over-DHCPv6 so | |
367 | when a 4to6 port command line argument enables this in the server the | |
368 | delayed-ack value is reset to 0. | |
369 | [ISC-Bugs #42446] | |
370 | ||
371 | - The server (-6) now honors the parameter, update-static-leases, for static | |
372 | (fixed-address6) DHCPv6 leases. It is worth noting that because stateful | |
373 | data is not retained by the server for static leases, each time a client | |
374 | requests or renews a static lease, the server will perform DDNS updates for | |
375 | it. This may have significant performance implications for environments | |
376 | with many clients that request or renew static leases often. Similarly, | |
377 | the DNS entries will not be removed by server when a client issues a RELEASE | |
378 | nor if the lease is deleted from the configuration. In such cases the DNS | |
379 | entries must be removed manually. This feature is disabled by default. | |
380 | Thanks to both Bill Shirley and dgutier-at-cern-dot-ch for requesting | |
381 | this change. | |
382 | [ISC-Bugs #34097] | |
383 | [ISC-Bugs #41054] | |
384 | [ISC-Bugs #41450] | |
385 | ||
386 | - Added to the server (-6) a new statement, local-address6, which specifies | |
387 | the source address of packets sent by the server. An additional flag, | |
388 | bind-local-address6, disabled by default, binds the service socket to | |
389 | to local-address6. Note that bind-local-address does not work with direct | |
390 | clients: a relay has to forward packets to the server using the | |
391 | local-address6 destination. | |
392 | [ISC-Bugs #46084] | |
393 | ||
394 | Changes since 4.4.0a1 (Bugs) | |
395 | ||
396 | - The server now recognizes environment variables PATH_DHCPD_DB and | |
397 | PATH_DHCPD_PID. These had been incorrectly compiled out of the code | |
398 | unless DHCPv6 support was disabled. Additionally, the server man | |
399 | pages were corrected to accurately reflect how the server chooses | |
400 | file names (see lease-file-name and pid-file-name statements). Thanks | |
7932503f TM |
401 | to Fernando Soto at Bluecat Networks for bringing this matter to our |
402 | attention. | |
4aa6129a TM |
403 | [ISC-Bugs #46859] |
404 | ||
405 | - Removed an "Impossible condition" error upon exit in the dhcpd server that | |
406 | has been shutdown via OMAPI. This condition was only apparent under Solaris | |
407 | when building with --enable-use-sockets and --enable-ipv4-pktinfo. | |
408 | [ISC-Bugs #36118] | |
409 | ||
65eed5c1 | 410 | - Corrected some minor Coverity issues: CID 1426059, 1426058, and 1426057. |
4aa6129a TM |
411 | [ISC-Bugs #46836] |
412 | ||
413 | - Added missing text to dhclient.8 and expanded release note coverage | |
414 | for --address-prefix-len changes. | |
7512d88b | 415 | |
0e76cb91 | 416 | Changes since 4.3.6 (New Features) |
3210786b | 417 | |
f9741514 FD |
418 | - Added --enable-bind-install to install embedded bind includes and |
419 | libraries. Default is to not install them (it was the previous | |
420 | behavior). If you'd like to change the includedir and/or libdir | |
5a67b030 FD |
421 | installation directories to something different than for ISC DHCP |
422 | you must pass them using the --with-bind-extra-config configuration | |
423 | arguments. | |
f9741514 FD |
424 | [ISC-Bugs #39318] |
425 | ||
007ba82a FD |
426 | - Added support of dynamic shared libraries with libtool. A new |
427 | --enable-libtool configuration parameter is available but | |
428 | should not be used directly: *please* read the build configuration | |
429 | section in the README file for the recommended procedure. | |
430 | [ISC-Bugs #29402] | |
431 | ||
417b7b4a TM |
432 | - IPv6 operation now supports an EUI-64 based address allocation which will |
433 | calculate addresses for clients with EUI-64 DUIDs based on those DUIDs when | |
434 | enabled by setting use-eui-64 true. The parameter may defined down to the | |
435 | pool scope. Note this feature must be compiled in by defining EUI_64 in | |
436 | includes/site.h. This flag is undefined by default. | |
437 | [ISC-Bugs #43927] | |
438 | ||
b3e6fd51 TM |
439 | - The directory includes/isc-dhcp and it's only occupant, dst.h, have |
440 | been removed from the source tree. They are obsolete for branches | |
441 | other than v4_1_esv. | |
442 | [ISC-bugs #45541] | |
443 | ||
7512d88b TM |
444 | - Replaced ISC licensing with Mozilla Public License, MPL 2.0 licensing |
445 | throughout. Please see https://www.mozilla.org/en-US/MPL/2.0/ to read | |
446 | the MPL 2.0 license terms. | |
447 | [ISC-Bugs #45541] | |
448 | ||
3e985dbf TM |
449 | - Load balancing for failover peers can now be disabled by setting |
450 | "load balance max secs" to 0. Doing so for both peers means both | |
451 | servers will respond to all DHCPDISCOVERs or DHCPREQUESTs as soon as | |
452 | they are received. | |
453 | [ISC-Bugs #39669] | |
454 | ||
c0e9661e TM |
455 | - Added a new dhclient command line parameter, --prefix-len-hint <length>. |
456 | When used in conjunction with -P, it directs dhclient to use the given | |
d8805cee TM |
457 | length as the prefix length hint when requesting prefixes. Thanks to both |
458 | Indy, of the FireballISO open source project and H. Peter Anvin for | |
459 | suggesting this change. | |
460 | [ISC-Bugs #43792] | |
461 | [ISC-Bugs #35112] | |
462 | [ISC-Bugs #32228] | |
463 | [ISC-Bugs #29470] | |
3e88222f TM |
464 | |
465 | - dhclient will now wait for 10 seconds after declining an IPv4 address | |
466 | before issuing a discover. This is in keeping with RFC 2131, section 3.1.5. | |
467 | Prior to this dhclient did not wait at all. The amount of time dhclient | |
468 | waits can be specified via a new command line parameter: | |
469 | --decline-wait-time <seconds>. A value of zero equates to no wait at all. | |
ecf9f77b | 470 | Thanks to Pavel Kankovsky for bringing this matter to our attention. |
9de870cc | 471 | **NOTE: THIS IS CHANGE IN DEFAULT BEHAVIOR. |
3e88222f | 472 | [ISC-Bugs #45457] |
c0e9661e | 473 | |
35e86889 TM |
474 | - dhclient will now include the lease address when logging DHCPOFFERs, |
475 | DHCPREQUESTs, DHCPACKs, DHCPRELEASEs, and DHCPDECLINEs. Additionally, | |
476 | DHCPOFFERs will be logged before their corresponding DHCPREQUESTs are | |
477 | sent and logged. | |
478 | [ISC-Bugs #2729] | |
479 | ||
d6057334 TM |
480 | - When given the -T command line argument, in addition to reading the |
481 | current lease file, the server will write the leases to a temporary | |
482 | lease file. This can help detect issues in server configuration that | |
483 | only surface when leases are written to the file. The current lease | |
484 | file will not be modified and the temporary lease file is removed upon | |
485 | completion of the test. | |
486 | [ISC-Bugs #22267] | |
487 | ||
0f69ff73 TM |
488 | - dhclient will now generate a DHCPv6 DECLINE message containing all IA_NA |
489 | addresses which for which the client script indicates a DAD failure. After | |
490 | receiving the DECLINE reply, dhclient will restart the solicit process. | |
491 | Note, the client script must exit with a value of 3 to signify that the | |
492 | address failed DAD. Thanks to Jiri Popelka of Red Hat for submitting the | |
493 | patch that was the foundation for this change. | |
9de870cc | 494 | **NOTE: THIS IS CHANGE IN DEFAULT BEHAVIOR. |
1aca5897 TM |
495 | [ISC-Bugs #21237] |
496 | [ISC-Bugs #23357] | |
f0f3555e | 497 | [ISC-Bugs #36966] |
0f69ff73 | 498 | |
30593241 TM |
499 | - Replaced compilation option, enable-secs-byteorder, with a run-time, server |
500 | configuration parameter, check-secs-byte-order. When enabled, the | |
501 | server will check for clients that do the byte ordering on the secs field | |
502 | incorrectly. This field should be in network byte order but some clients | |
503 | get it wrong. When this parameter is enabled the server will examine the | |
504 | secs field and if it looks wrong (high byte non zero and low byte zero) swap | |
505 | the bytes. The default is disabled. This parameter is only useful when | |
506 | doing load balancing within failover. | |
507 | [ISC-Bugs #45364] | |
508 | ||
b53ba157 TM |
509 | - The default value for server (-6) parameter, prefix-length-mode, has been |
510 | changed from "exact" to "prefer". In "prefer" mode the server will offer | |
511 | the first available prefix with the same length as that requested by the | |
512 | client. If none are found then it will offer the first available prefix of | |
513 | any length. This is more in line with with RFC 8168 and should improve | |
514 | the out-of-the-box user experience. | |
9de870cc | 515 | **NOTE: THIS IS CHANGE IN DEFAULT BEHAVIOR. |
b53ba157 TM |
516 | [ISC-Bugs #45615] |
517 | ||
bbdac71d TM |
518 | - Added support for 'dhcp-cache-threshold' to IPv6 operation: If a client |
519 | renews before 'dhcp-cache-threshold' percent of its lease has elapsed | |
520 | (default 25%), the server will reuse the allocated lease (provide a | |
521 | lease within the currently allocated lease-time) rather than extend or | |
522 | renew the lease. This allows the server to reply without needlessly | |
523 | writing leases to disk. The preferred and valid lease lifetimes | |
524 | sent to the client will be reduced by the age of the lease. The option | |
525 | may be specified down to the pool level and is supported for all three | |
526 | pool types: NA, TA, and PD. | |
527 | [ISC-Bugs #45292] | |
528 | ||
905c58b9 TM |
529 | - Added three new server configuration parameters which influence DDNS: |
530 | 1. ddns-dual-stack-mixed-mode - alters DNS conflict resolution behavior | |
531 | to mitigate issues with non-compliant clients in dual stack environments. | |
532 | ||
533 | 2. ddns-guard-id-must-match - relaxes the DHCID RR client id matching | |
534 | requirement of DNS conflict resolution. | |
535 | ||
2f3eca17 | 536 | 3. ddns-other-guard-is-dynamic - alters dual-stack-mixed-mode behavior to |
905c58b9 TM |
537 | allow unguarded DNS entries to be overwritten in certain cases |
538 | [ISC-Bugs #42620] | |
25e4af8b TM |
539 | [ISC-Bugs #42621] |
540 | [ISC-Bugs #44753] | |
905c58b9 | 541 | |
e6ffc27f TM |
542 | - A "key-algorithm <algorithm>" statement has been added to omshell to |
543 | allow the specification of the key algorithm to use during transaction | |
544 | authentication. Prior to this it was hard-coded to be hmac-md5. It now | |
545 | supports all of the same algorithms as the dhcpd server: hmac-md5 (the | |
546 | default), hmac-sha1, hmac-sha224, hmac-sha256, hmac-sha384, and hmac-sha512. | |
547 | [ISC-Bugs #46771] | |
548 | ||
c2e5ee28 TM |
549 | - Added a server configuration parameter, persist-eui-64-leases, which |
550 | determines whether or not EUI-64 based leases are written to the | |
551 | leases file. Default is true. | |
552 | [ISC-Bugs #45046] | |
553 | ||
140612c8 | 554 | - Changed the default value of the prefix length passed by dhclient into the |
a804fcc0 TM |
555 | client script for each IPv6 address from 64 to 128. This was done to comply |
556 | with RFC3315bis draft (-09, page 64) and RFC5942, Section 4, point 1. | |
557 | In addition, dhclient now supports a command line argument, | |
558 | --address-prefix-len, which may be used to override the default value. | |
559 | **WARNING**: This change may not be backwardly compatible with your | |
560 | environment. If you are operating without a router, such as between VMs on | |
561 | a host, you may find they cannot see each with prefix length of 128. In | |
562 | such cases, you'll need to either provide routing or use the command line | |
563 | parameter to set the value to 64. Alternatively you may change the default | |
564 | at compile time by setting DHCLIENT_DEFAULT_PREFIX_LEN in includes/site.h. | |
140612c8 | 565 | [ISC-Bugs #23252] |
fa6c4c08 | 566 | [ISC-Bugs #37221] |
140612c8 | 567 | |
f1fc5ede | 568 | - Modified dhclient (-6) to bypass sending a confirm (INIT REBOOT) when it has |
a804fcc0 | 569 | only expired address associations. Thanks to Jiri Popelka at Red Hat for |
f1fc5ede TM |
570 | raising the issue and submitting the patch. |
571 | [ISC-Bugs #22675] | |
0e76cb91 | 572 | Changes since 4.3.6 (Bugs): |
0b0a1399 | 573 | |
0e76cb91 TM |
574 | - Corrected an issue where the server would return a client's previously |
575 | released prefix lease even when the client provides a prefix length | |
576 | hint that does not match the prior lease. Now the server will only | |
577 | return the previous lease if it exactly matches the hint. If not | |
578 | it will attempt to allocate a new prefix based on the hint and the | |
579 | prefix-length-mode. Thanks to Tim DeNike - Lightspeed Communications | |
580 | for pointing out the error of our ways. | |
581 | [ISC-bugs #45780] | |
d1489a35 | 582 | |
a804fcc0 | 583 | - Added explicit include of BIND9 isc/util.h to adapt to revisions |
0e76cb91 TM |
584 | in BIND9 (see BIND9 ticket #46311). Prior to this the build was failing |
585 | with implicit function declarations errors for POST() and INSIST(). | |
586 | [ISC-bugs #46332] | |
d1489a35 | 587 | |
0e76cb91 TM |
588 | - Added to code ignore empty IPv4 host name option (code 12). While RFC 2132 |
589 | states the option cannot be empty, some clients are apparently capable of | |
590 | sending it. Prior to this the server was attempting to use it and store it | |
591 | in the lease file causing issues with DDNS and so forth. | |
592 | [ISC-bugs #43786] | |
d1489a35 | 593 | |
9de870cc TM |
594 | - Corrected dhclient command line parsing for --dad-wait-time that causes |
595 | even valid values to fail as invalid on some environments. | |
596 | [ISC-Bugs #46535] | |
597 | ||
0e76cb91 TM |
598 | - Replaced iasubopt::heap_index with separate values for active and inactive |
599 | heaps: iasubopt::active_index and iasubopt::inactive_index. This was done | |
a804fcc0 | 600 | to accommodate a change in behavior in BIND9 isc_heap_delete(). |
0e76cb91 | 601 | [ISC-bugs #46719] |
e105afa1 | 602 | |
0e76cb91 TM |
603 | ! Plugged a socket descriptor leak in OMAPI, that can occur when there is |
604 | data pending to be written to an OMAPI connection, when the connection | |
605 | is closed by the reader. Thanks to Pavel Zhukov at RedHat for bringing | |
606 | this issue to our attention and whose patch helped guide us in the right | |
607 | direction. | |
608 | [ISC-Bugs #46767] | |
4f553fea | 609 | |
9de870cc TM |
610 | - The ability of the server to send back dhcp6.vendor-opts values has been |
611 | restored. A change in 4.3.5 (see #29246) which enabled it to send back the | |
612 | FQDN option unfortunately broke its ability send back dhcp6.vendor-opts. | |
613 | Thanks to Sumant Gupta (sumantgupta at gmail dot com) of Landis+Gry for | |
614 | bringing this issue to our attention. | |
615 | [ISC-Bugs #46427] | |
616 | ||
0e76cb91 | 617 | Changes since 4.3.6b1 |
09dccd03 | 618 | |
0e76cb91 | 619 | - None |
eb2d84b6 | 620 | |
0e76cb91 | 621 | Changes since 4.3.5 |
76a7db2c | 622 | |
0e76cb91 TM |
623 | - The server now allows the client identifier (option 61) to own leases |
624 | in more than one subnet concurrently. Prior to this the server would | |
625 | incorrectly release an existing lease in one subnet prior to assigning | |
626 | a lease in another subnet. Note that the prior behavior can be still | |
627 | be achieved by enabling one-lease-per-client. Thanks to both David Zych at | |
628 | the University of Illinois and Norm Proffitt of Infoblox for reporting | |
629 | the issue; and Norm for suggesting a solution. | |
630 | [ISC-Bugs #41358] | |
ad06e7ba | 631 | |
0e76cb91 TM |
632 | - When replying to a DHCPINFORM, the server will now include options specified |
633 | at the pool scope, provided the ciaddr field of the DHCPINFORM is populated. | |
634 | Prior to this the server only evaluated options down to the subnet scope. | |
635 | Thanks to Fernando Soto at BlueCat Networks for reporting the issue. | |
636 | [ISC-Bugs #43219] | |
637 | [ISC-Bugs #45051] | |
a5252220 | 638 | |
0e76cb91 TM |
639 | - When memory allocation fails in a repeated way the process writes |
640 | "Run out of memory." on the standard error and exists with status 1. | |
641 | [ISC-Bugs #32744] | |
b7bfb2c7 | 642 | |
0e76cb91 TM |
643 | - The new lmdb (Lightning Memory DataBase) bind9 configure option is |
644 | now disabled by default to avoid the presence of this library to be | |
645 | detected which can lead to a link failure. | |
646 | [ISC-Bugs #45069] | |
841d9a18 | 647 | |
0e76cb91 TM |
648 | - The linux interface discovery code has been modified to use getifaddrs() |
649 | as is done for BSD and OS-X. Prior to this the code would only recognize | |
650 | the first address on an interface and thereby omit vlans. | |
651 | Thanks to Jiri Popelka at Redhat, Marius Tomaschewski at SUSE, and Wei | |
652 | Kong at Novell, who all submitted patches. | |
653 | [ISC-Bugs #28761] | |
654 | [ISC-Bugs #31992] | |
655 | [ISC-Bugs #25428] | |
656 | [ISC-Bugs #31940] | |
657 | [ISC-Bugs #32935] | |
3abc5708 | 658 | |
0e76cb91 TM |
659 | - Fixed a bug in OMAPI that causes omshell to crash when a name-value |
660 | pair with a zero length value is shipped in an object. Thanks to | |
661 | Fernando Soto at BlueCat Networks for reporting the issue and | |
662 | supplying the patch. | |
663 | [ISC-Bugs #29108] | |
10b7683e | 664 | |
0e76cb91 TM |
665 | - On 64-bit platforms, dhclient now generates the correct value for the |
666 | script environment variable, "expiry", the lease expiry value exceeds | |
667 | 0x7FFFFFFF. Prior to this such values would produce negative values | |
668 | for expiry in the script environment. | |
669 | [ISC-Bugs #43326] | |
21f3982a | 670 | |
0e76cb91 TM |
671 | - Common timer logic was modified to cap the maximum timeout values at |
672 | 0x7FFFFFFF - 1. Values larger than that were causing fatal timer out of | |
673 | range errors on 64-bit platforms. Thanks to Jiri Popelka at Red Hat for | |
674 | reporting the issue. | |
675 | [ISC-Bugs #28038] | |
33dca28a | 676 | |
0e76cb91 TM |
677 | - DHCP6 FQDN option unpacking code now correctly handles values that contain |
678 | spaces, special, or non-printable characters. Prior to this the buffer | |
679 | size needed was underestimated causing a conversion error message to | |
680 | be logged and DNS updates to be skipped. Thanks to Fernando Soto at | |
681 | BlueCat Networks for bringing the matter to our attention. | |
682 | [ISC-Bugs #43592] | |
33dca28a | 683 | |
0e76cb91 TM |
684 | - When running in -6 mode, dhclient can enforce the require option statement |
685 | and will discard offered leases that do not contain all the required | |
686 | options specified in the client configuration. If not enabled the client | |
687 | will still consider such leases. This must be enabled at compile time | |
688 | (see ENFORCE_DHCPV6_CLIENT_REQUIRE in includes/site.h). Thanks to | |
689 | Mritunjaykumar Dubey at Nokia for reporting the issue. | |
690 | [ISC-Bugs #41473] | |
7da1ac2b | 691 | |
0e76cb91 TM |
692 | - Altered DHCPv4 lease time calculation to avoid roll over errors on 64-bit |
693 | OS systems when using -1 or large values for default-lease-time. Rollover | |
694 | values will be replaced with 0x7FFFFFFF - 1. This alleviates unintentionally | |
695 | short expiration times being handed out when infinite lease times (-1) in | |
696 | conjunction with failover. Our thanks to Alessandro Gherardi for bringing | |
697 | the issue to our attention. | |
698 | [ISC-Bugs #41976] | |
e82906fc | 699 | |
0e76cb91 TM |
700 | - Added new compile time option --with-srv-conf-file which specifies a |
701 | default location of the server configuration file. | |
702 | [ISC-Bugs #44765] | |
20931f53 | 703 | |
0e76cb91 TM |
704 | - Added --dad-wait-time parameter to dhclient. It specifies the maximum time, |
705 | in seconds, that the client process should wait for the duplicate address | |
706 | detection to complete before initiating DHCP requests. This value is | |
707 | propagated to the dhclient script and the script is responsible for waiting | |
708 | the specified amount of time or until DAD has completed. If the script does | |
709 | not support it, specifying this parameter has no effect. The default value | |
710 | is 0 which specifies that the script should not wait for DAD. With this | |
711 | change the following scripts have been modified to support the new parameter: | |
712 | freebsd, linux, macos, netbsd, openbsd. | |
713 | [ISC-Bugs #36169] | |
5cc6f201 | 714 | |
0e76cb91 TM |
715 | - The server nows checks both the address and length of a prefix delegation |
716 | when attempting to match it to a prefix pool. This ensures the server | |
717 | responds properly when pool configurations change such that once valid, | |
718 | "in-pool" delegations are now treated as being invalid. During lease | |
719 | file loading at startup, the server will discard any PD leases that | |
720 | are deemed "out-of-pool" either by address or mis-matched prefix length. | |
721 | Clients seeking to renew or rebind such leases will get a response of | |
722 | No Binding in the case of the former, and the prefix delegation with | |
723 | lifetimes set to zero in the case of the latter. Thanks to Mark Nejedlo | |
724 | at TDS Telecom for reporting this issue. | |
725 | [ISC-Bugs #35378] | |
88c3ff5d | 726 | |
0e76cb91 TM |
727 | - Modified DDNS support initialization such that DNS related ports will only be |
728 | opened by the server (dhcpd) at startup if ddns-update-style is not "none"; | |
729 | by dhclient only if and when the it first attempts an update; and never by | |
730 | dhcrelay. Prior to this all three always did the initialization at startup | |
731 | which causes them to always open on and listen for traffic on two random | |
732 | ports. Thanks to Rodney Beede for reporting this issue. | |
733 | [ISC-Bugs #45290] | |
734 | [ISC-Bugs #33377] | |
f10cbbfa | 735 | |
0e76cb91 TM |
736 | - Added error logging to two memory allocation failure checks. Thanks to Bill |
737 | Parker (wp02855 at gmail dot com) for reporting the issue. | |
738 | [ISC-Bugs #41185] | |
5fc79cfd | 739 | |
0e76cb91 TM |
740 | - Corrected a dhclient -6 issue that caused the client to crash with an |
741 | "Impossible condition" error after de-preferencing its only IA binding. | |
742 | The crash occurred when server configuration changes rendered the existing | |
743 | binding out-of-range and no other leases were available to offer. Thanks | |
744 | to Pierre Clerissi for bringing this issue to our attention. | |
745 | [ISC-Bugs #44373] | |
555093da | 746 | |
0e76cb91 TM |
747 | - By defining CALL_SCRIPT_ON_ONETRY_FAIL in includes/site.h, dhclient will |
748 | now call the script with reason set to FAIL when run with -1 (one try) and | |
749 | there are no server responses. This applies to IPv4 mode only. Thanks for a | |
750 | patch by Martin Pitt which got to us via Andrew Pollock. | |
751 | [ISC-bugs #18183] | |
646acb59 | 752 | |
0e76cb91 TM |
753 | - The server now detects failover peers that are not referenced in at least |
754 | one pool when run with the command line option for test mode, -T. Prior to | |
755 | this the check was performed too far down stream to be detected in test mode. | |
756 | [ISC-Bugs #29892] | |
18ba0ff3 | 757 | |
0e76cb91 TM |
758 | - Linux script updated. The script is now based on Debian version. It uses |
759 | ip tool from iproute2 package and ifconfig is no longer used. This also | |
760 | addresses an issue of calling arping with inappropriate parameter. | |
761 | [ISC-bugs #19430] | |
762 | [ISC-bugs #18111] | |
ce29e695 | 763 | |
0e76cb91 TM |
764 | - Changed severity of the log message indicating UDP checksum errors in |
765 | the received packets from 'info' to 'debug' to avoid logging excessive | |
766 | number of false positives when UDP checksum offloading is enabled. | |
767 | [ISC-bugs #41757] | |
d1d1da8f | 768 | |
0e76cb91 TM |
769 | - The directory minires has been removed from the source tree. It has |
770 | long been obsolete for branches other than v4_1_esv. Additionally, | |
771 | includes/minires.h was renamed includes/ns_name.h. | |
772 | [ISC-bugs #45471] | |
c88dfebd | 773 | |
0e76cb91 TM |
774 | - Replaced ifconfig parameters "add" and "delete" with "alias" and "-alias" |
775 | for IPv6 mode in the client scripts, netbsd and openbsd. This was | |
776 | preventing IPv6 addresses from being added or removed from interfaces. | |
777 | Thanks to Tim Dean for reporting this issue. | |
778 | [ISC-bugs #31573] | |
4ce21cb6 | 779 | |
0e76cb91 | 780 | Changes since 4.3.5b1 |
b2cb745b | 781 | |
0e76cb91 TM |
782 | - Corrected a bug which could cause the server to sporadically crash while |
783 | loading lease files with the lease-id-format is set to "hex". Our thanks | |
784 | to Jay Ford, University of Iowa for reporting the issue. | |
785 | [ISC-Bugs #43185] | |
4ced250f | 786 | |
0e76cb91 TM |
787 | - Eliminated a noisy, but otherwise harmless debug log statment that may |
788 | appear during server startup when building with --enable-binary-leases | |
789 | and configuring multiple pools in a shared network. Thanks to Fernando | |
790 | Soto from BlueCat Networks for reporting the issue and supplying a patch. | |
791 | [ISC-Bugs #43262] | |
a3471269 | 792 | |
0e76cb91 | 793 | Changes since 4.3.4 |
3e3b5257 | 794 | |
0e76cb91 TM |
795 | - Fixed util/bindvar.sh error handling. |
796 | [ISC-Bugs #41973] | |
ba4c704d | 797 | |
0e76cb91 TM |
798 | - Correct error message in relay to use remote id length instead |
799 | of circuit id length. | |
800 | [ISC-Bugs #42556] | |
b1eea858 | 801 | |
0e76cb91 TM |
802 | - Add logic to test directory Makefiles to avoid copying Attfile(s) |
803 | when building within the source tree. This eliminates a noisy but | |
804 | otherwise harmless error message when running "make check". | |
805 | [ISC-Bugs #41883] | |
36c4a037 | 806 | |
0e76cb91 TM |
807 | - Leases are now scrubbed of certain prior use information when pool |
808 | re-balancing reassigns them from one FO peer to the other. This | |
809 | corrects an issue where leases that were offered but not used | |
810 | by the client retained the client hostname from the original | |
811 | client. Thanks to Pavel Polacek, Jan Evangelista Purkyne University | |
812 | for reporting the issue. | |
813 | [ISC-Bugs #42008] | |
41b5a1a6 | 814 | |
0e76cb91 TM |
815 | - In the LDAP code and schema add some missing '6' characters to use |
816 | the v6 instead of the v4 versions. Thanks to Denis Taranushin for | |
817 | reporting this issue and supplying its patch. | |
818 | [ISC-Bugs #42666] | |
62a9eb91 | 819 | |
0e76cb91 TM |
820 | - Correct how the pick-first-value expression is written to a lease |
821 | file. Previously it was written as a concat expression due to | |
822 | a cut and paste error. | |
823 | [ISC-Bugs #42253] | |
b7311aae | 824 | |
0e76cb91 TM |
825 | - Modify the DDNS code to clean up the PTR record even if there |
826 | are issues while cleaning up the A or AAAA records. | |
827 | [ISC-Bugs #23954] | |
1bfdeaae | 828 | |
0e76cb91 TM |
829 | - Added global configuration parameter, abandon-lease-time, which determines |
830 | the amount of time a lease remains abandoned. The default is 84600 seconds. | |
831 | Additionaly, the server now conducts a ping check (if ping checks are | |
832 | enabled) prior to offering an abandoned lease to client. Our thanks to | |
833 | David Zych at University of Illinois for reporting the issue and working | |
834 | with us to produce a viable solution. | |
835 | [ISC-Bugs #41815] | |
1d3fc4d0 | 836 | |
0e76cb91 TM |
837 | - Correct handling of interface names during interface discovery. This |
838 | addresses an issue where interface names of 15 characters in length | |
839 | could lead to crashes or interface recognition errors during startup | |
840 | of dhcpd, dhclient, and dhcrelay. | |
841 | [ISC-Bugs #42226] | |
68b5d395 | 842 | |
0e76cb91 TM |
843 | - Updates to contrib/dhcp-lease-list.pl to make it more friendly. |
844 | The updates are: looking for the lease file in more places and skipping | |
845 | the "processing complete" output when creating machine readable | |
846 | output. Thanks to Cameron Paine (cbp at null dot net) for the | |
847 | patch. | |
848 | [ISC-Bugs #42113] | |
f704712e | 849 | |
0e76cb91 TM |
850 | - When reusing a lease for dhcp-cache-threshold return the hostname |
851 | to the original lease. Also if the host pointer, UID or hardware address | |
852 | change don't allow reuse of the lease. | |
853 | Thanks to Michael Vincent for reporting this and helping us | |
854 | verify the problem and fix. | |
855 | [ISC-Bugs #42849] | |
6e7e6637 | 856 | |
0e76cb91 TM |
857 | - Change dmalloc to use a size_t as the length argument to bring it |
858 | in line with the call it will make to malloc(). | |
859 | [ISC-Bugs #40843] | |
dce576b8 | 860 | |
0e76cb91 TM |
861 | - If the failover socket can't be bound, close it. Otherwise if the |
862 | user configures an incorrect address in the failover stanza the | |
863 | server will continue to open new sockets every 90 seconds until | |
864 | it runs out. | |
865 | [ISC-Bugs #42452] | |
45086eef | 866 | |
0e76cb91 TM |
867 | - Add DHCPv4-mode, dhcrelay command line options, "-iu" and "-id", that |
868 | allow interfaces to be upstream or downstream respectively. Upstream | |
869 | interfaces will accept and forward only BOOTP replies, while downstream | |
870 | interfaces will accept and forward only BOOTP requests. | |
871 | [ISC-Bugs #41547] | |
785c1a51 | 872 | |
0e76cb91 TM |
873 | - Clean up some memory references in the vendor-class construct. |
874 | [ISC-Bugs #42984] | |
0f1a34e9 | 875 | |
0e76cb91 | 876 | Changes since 4.3.4b1 |
84ee63a0 | 877 | |
0e76cb91 | 878 | - None |
cc1bd34e | 879 | |
0e76cb91 | 880 | Changes since 4.3.3 |
0b209ea5 | 881 | |
0e76cb91 TM |
882 | - Corrected a static analyzer warning in common/execute.c |
883 | [ISC-Bugs #40374] | |
ba4c704d | 884 | |
0e76cb91 TM |
885 | - ISC DHCP now follows the common convention to use the base name a |
886 | program is invoked with (aka argv[0], vs. a builtin name) for | |
887 | logs. This should help differentiate syslog entries for DHCPv4 and | |
888 | DHCPv6 servers. You can define OLD_LOG_NAME in includes/site.h to | |
889 | keep the previous behavior. | |
890 | [ISC-Bugs #38692] | |
6067cd48 | 891 | |
d618ba48 SR |
892 | - The Linux packet filter code now correctly treats only the least significant |
893 | 12 bits in an inbound packet's TCI value as the VLAN id (per IEEE 802.1Q). | |
894 | Prior to this it was using the entire 16 bit value as the VLAN id and | |
895 | incorrectly discarding packets. Thanks to Jiri Popelka at Red Hat for | |
896 | reporting this issue and supplying its patch. | |
897 | [ISC-Bugs #40591] | |
21d30347 | 898 | |
d618ba48 SR |
899 | - Fixed several static analysis issues such as potential null |
900 | references, unchecked strdup returns. Thanks to Bill Parker (wp02855 at | |
901 | gmail dot com) who identified these issues and supplied patches to | |
902 | address them. | |
903 | [ISC-Bugs #40754] | |
904 | [ISC-Bugs #40823] | |
d9b2a590 | 905 | |
d618ba48 SR |
906 | - Corrected compilation errors that prohibited building the server |
907 | and its ATF unit tests when failover is disabled. | |
908 | [ISC-Bugs #40372] | |
d9b2a590 | 909 | |
d618ba48 SR |
910 | - Added the lease address to the end of the debug level log message |
911 | emitted when an existing lease is renewed within the dhcp-cache-threshold. | |
912 | Thanks to Nathan Neulinger at Missouri S&T for suggesting the change. | |
913 | [ISC-Bugs #40598] | |
d9b2a590 | 914 | |
d618ba48 SR |
915 | - Added dhcpv6 and delayed-ack to settings listed in the "Features:" |
916 | section of the configure script output. Additionally, all of the | |
917 | features reported on will now always show either a "yes" or "no" | |
918 | value. Prior to this features left to their default setting would | |
919 | not show a value. | |
920 | [ISC-Bugs #40381] | |
f3a44c10 | 921 | |
d618ba48 SR |
922 | - Added a parameter, authoring-byte-order, to the lease file. This value |
923 | is automatically added to the top of new lease files by the server and | |
924 | indicates the internal byte order (big endian or little endian) of the | |
925 | server. This permits lease files generated on a server with one form of | |
926 | byte order to be used on a server with the opposite form. Our thanks to | |
927 | Timothe Litt for calling this to our attention and for the suggestions | |
928 | he provided. | |
929 | [ISC-Bugs #38396] | |
04daf4fe | 930 | |
d618ba48 SR |
931 | - Fixed a small memory leak in the DHCPv6 version of the client code. |
932 | This is unlikely to cause significant issues in actual use. | |
933 | [ISC-Bugs #40990] | |
7116a34f | 934 | |
d618ba48 SR |
935 | - Corrected a few minor memory leaks in omapi's dereferencing of |
936 | host objects. Thanks to Jiri Popelka at Red Hat for reporting | |
937 | the issue and supplying the patches. | |
938 | [ISC-Bugs #33990] | |
939 | [ISC-Bugs #41325] | |
2775bd62 | 940 | |
d618ba48 SR |
941 | - Cleaned up some of the Make infrastructure to make --with-libbind |
942 | work better. Though it still only works with an absolute path. | |
943 | [ISC-Bugs #39210] | |
dd9738aa | 944 | |
d618ba48 SR |
945 | - Made the embedded bind libraries able to be cross compiled |
946 | (please refer to the bind9 documentation to learn how to cross | |
947 | compile DHCP and its bind library dependency). | |
948 | [ISC-Bugs #38836] | |
491bf4a2 | 949 | |
d618ba48 SR |
950 | - Update the client code to better support getting IA_NAs and IA_PDs |
951 | in the same packet, see RFC7550 for some discussion. | |
952 | [ISC-Bugs #40190] | |
992dc765 | 953 | |
d618ba48 SR |
954 | ! Update the bounds checking when receiving a packet. |
955 | Thanks to Sebastian Poehn from Sophos for the bug report and a suggested | |
956 | patch. | |
957 | [ISC-Bugs #41267] | |
958 | CVE: CVE-2015-8605 | |
cb8c997e | 959 | |
d618ba48 SR |
960 | - When handling an incorrect command line for dhcpd, dhclient or dhcrelay |
961 | print out a specific error message about the first error in addition | |
962 | to the usage string. This may be disabled by editing includes/site.h. | |
963 | [ISC-Bugs #40321] | |
964 | [ISC-Bugs #41454] | |
acbecb2e | 965 | |
d618ba48 SR |
966 | - The configure script will now exit with an error message if it cannot find |
967 | a GNU-style make tool (needed when building BIND libraries) or pkg-config | |
968 | (needed to locate ATF used for building unit tests). Prior to this the | |
969 | script would exit indicating success causing subsequent attempts to build | |
970 | the software to fail. | |
971 | [ISC-Bugs #40371] | |
fb98e02e | 972 | |
d618ba48 SR |
973 | - Properly terminate strings before passing them to regex and fix |
974 | a boundary error when creating certain new data strings. | |
975 | Thanks to Andrey Jr. Melnikov for the bug report. | |
976 | [ISC-Bugs #41217] | |
1a006ff6 | 977 | |
d618ba48 SR |
978 | - Option expressions, such as prepend and append, are now supported when |
979 | running dhclient for IPv6. Prior to this such statements in the | |
980 | client configuration file would be parsed but have no affect. Thanks | |
981 | to Jiri Popelka at Red Hat for reporting the issue. | |
982 | [ISC-Bugs #39952] | |
45adf35c | 983 | |
d618ba48 SR |
984 | - A failover primary server will now accept a binding status update from the |
985 | secondary which transitions a lease from ACTIVE to ABANDONED. This accounts | |
986 | for instances in which a client declines a lease and only the secondary | |
987 | server receives it. Prior to this the primary server would reject such an | |
988 | update as an "invalid state transition". | |
989 | [ISC_BUGS #25189] | |
7d9dd306 | 990 | |
d618ba48 SR |
991 | - Properly allocate memory for a bpf filter. |
992 | Thanks to Bill Parker (wp02855 at gmail dot com) who identified this issue. | |
993 | [ISC-Bugs #41485] | |
7d9dd306 | 994 | |
d618ba48 SR |
995 | - Updated contrib/dhcp-lease-list.pl to handle garbage in the oui file better |
996 | and to print out the hostnames a bit better. | |
997 | Thanks to Antoine Beaupré from Debian for the suggested patch. | |
998 | [ISC-Bugs #41288] | |
29c6b4f1 | 999 | |
d618ba48 SR |
1000 | - The DHCPv6 server now handles long valid and preferred lease times better. |
1001 | Values that would cause the internal end time of the lease to wrap are | |
1002 | modified to work as infinite. | |
1003 | [ISC-Bugs #40773] | |
01a44a77 | 1004 | |
d618ba48 SR |
1005 | - Updated support for cross compiling by allowing the library archiver |
1006 | to be set at configure time via the environment variable 'AR'. | |
1007 | [ISC-Bugs #41536] | |
01a44a77 | 1008 | |
d618ba48 SR |
1009 | - The server will now match DHCPv6 relayed clients to host declarations |
1010 | which include the "hardware" statement, if the relay connected to the | |
1011 | client supplies the client's hardware address via client-linklayer-address | |
1012 | option as per RFC 6939. | |
1013 | [ISC-Bugs #40334] | |
fc48033a | 1014 | |
d618ba48 SR |
1015 | - Allow a filename to be specified instead of /dev/random during |
1016 | configuration. This is passed to the BIND configuration to allow | |
1017 | for cross compilation. | |
1018 | [ISC-Bugs #33835] | |
db3f7799 | 1019 | |
d618ba48 SR |
1020 | - Add more option definitions. |
1021 | [ISC-Bugs #40562] | |
0da37b4c | 1022 | |
d618ba48 SR |
1023 | - Correct outputting of long lines in the lease file when writing |
1024 | a lease that includes long strings in an execute statement. | |
1025 | [ISC-Bugs #40994] | |
158a34fb | 1026 | |
d618ba48 SR |
1027 | - The server will now correctly treat a lease as reserved when the client |
1028 | requests an infinite lease time (i.e. OxFFFFFFFF) and "infinite-is-reserved" | |
1029 | is enabled. Prior to this the server would halt. In addition, corrections | |
1030 | were made to the server to allow a lease's flags field to be set via omapi. | |
1031 | Prior to this, the server, depending on the host architecture, would | |
1032 | incorrectly parse the new flags value from the omapi message. | |
1033 | [ISC-Bugs #31179] | |
dceef873 | 1034 | |
d618ba48 SR |
1035 | - ISC DHCP can now be configured and built from a directory other than |
1036 | the top level source directory. Note that "make distcheck" uses this | |
1037 | feature. | |
1038 | [ISC-Bugs #39262] | |
1be2ba15 | 1039 | |
d618ba48 SR |
1040 | - Add support for RFC 3527 to dhcrelay. A new, dhcrelay command line argument, |
1041 | "-U <interface>" enables the addition of a RFC 3527 compliant link selection | |
1042 | suboption to the agent option added for clients directly connected to the | |
1043 | relay. | |
1044 | [ISC-Bugs #34875] | |
1045 | [ISC-Bugs #41708] | |
388cba45 | 1046 | |
d618ba48 SR |
1047 | - Add a new global DHCPv6 option, dhcpv6-set-tee-times, which when enabled |
1048 | instructs the server to calculate T1 and T2 as recommended in RFC 3315, | |
1049 | Section 22.4. | |
1050 | [ISC-Bugs #25687] | |
388cba45 | 1051 | |
d618ba48 SR |
1052 | - Corrected minor Coverity issues. |
1053 | [ISC-Bugs #35144] | |
b6ab3f6c | 1054 | |
d618ba48 SR |
1055 | - Add support for RFC 7341 DHCPv4 over DHCPv6 with a new configuration |
1056 | option "--enable-dhcpv4o6". Note this feature requires DHCPv6 support | |
1057 | and is not compatible with delayed-ack. Both client and server use 2 | |
1058 | processes which communicate over UDP on a pair of sockets. The new | |
1059 | "-4o6 <port>" command line argument enables DHCPv4 over DHCPv6 support | |
1060 | and specifies the consecutive ports to use for inter-process communication. | |
1061 | Please look at doc/DHCPv4-over-DHCPv6 for more details. | |
1062 | [ISC-Bugs #35711] | |
f950de77 | 1063 | |
d618ba48 SR |
1064 | - Correct interface name formation when using DLPI under Solaris 11. As of |
1065 | Solaris 11, ethernet device files are located in "/dev/net". The configure | |
1066 | script has been modified to detect this situation and adjust the directory | |
1067 | used accordingly. Thanks to Jarkko Torppa for reporting this issue and | |
86bda88b | 1068 | submitting a patch |
d618ba48 SR |
1069 | [ISC-Bugs #37954] |
1070 | [ISC-Bugs #40752] | |
02b0bdc3 | 1071 | |
d618ba48 SR |
1072 | - Add a dereference call when handling an error condition while |
1073 | decoding a packet. | |
1074 | [ISC-Bugs #41774] | |
d8c7c34e | 1075 | |
d618ba48 SR |
1076 | - Add a new parameter, lease-id-format, to both dhcpd and dhclient. The |
1077 | parameter controls the format in which certain values are written to lease | |
1078 | files. Formats supported are octal - quoted string containing octal | |
1079 | escapes, and hex - unquoted, colon separated hex digits. Thanks to | |
1080 | Jay Ford, University of Iowa for bringing the issue to our attention. | |
1081 | [ISC-Bugs #26378] | |
00e9af8e | 1082 | |
d618ba48 SR |
1083 | ! Add an option in site.h to limit the number of failover and control |
1084 | connections the server will accept. By default this is 200. | |
1085 | [ISC-Bugs #41845] | |
1086 | CVE: CVE-2016-2774 | |
9279a3d7 | 1087 | |
0e76cb91 | 1088 | Changes since 4.3.3b1 |
59a351d6 | 1089 | |
0e76cb91 | 1090 | - None |
0ab4a716 | 1091 | |
0e76cb91 | 1092 | Changes since 4.3.2 |
250f7134 | 1093 | |
0e76cb91 TM |
1094 | - The server now does a better check to see if it can allocate the memory |
1095 | for large blocks of v4 leases and should provide a slightly better error | |
1096 | message. Note well: the server pre-allocates v4 addresses, if you use | |
1097 | a large range, such as a /8, the server will attempt to use a large | |
1098 | amount of memory and may not start if there either isn't enough memory | |
1099 | or the size exceeds what the code supports. | |
1100 | [ISC-Bugs #38637] | |
b05e05b7 | 1101 | |
0e76cb91 TM |
1102 | - The server will now reject unicast Request, Renew, Decline, and Release |
1103 | messages from a client unless the server would have sent that client the | |
1104 | dhcp6.unicast option. This behavior is in compliance with paragraph 1 in | |
1105 | each of the sections 18.2,1, 18.2.3, 18.2.6, and 18.2.7 of RFC 3315. Prior | |
1106 | to this, the server would simply accept the messages. Now, in order for | |
1107 | the server to accept such a message, the server configuration must include | |
1108 | the dhcp6.unicast option either globally or within the shared network to | |
1109 | which the requested lease belongs. In other words, the server will map | |
1110 | the first IA_XX address found within the client message to a shared-network | |
1111 | and look for the presence of the unicast option there and then globally. | |
1112 | Thanks to Jiri Popelka at Red Hat for this issue and his patch which | |
1113 | inspired the fix. | |
1114 | [ISC-Bugs #21235] | |
ad80055f | 1115 | |
0e76cb91 TM |
1116 | - The ATF (Automated Testing Framework) tools used for optional unit tests |
1117 | can now be built from its embedded sources in bind, solving the | |
1118 | atf-run / atf-report issue with recent (>= 0.20) versions of ATF. | |
1119 | The new configuration option is "./configure --with-atf=bind". | |
1120 | [ISC-Bugs #38754, #39300] | |
e9326fd0 | 1121 | |
0e76cb91 TM |
1122 | - Corrected a compilation error introduced by the fix for ISC-Bugs #22806. |
1123 | On older linuxes that do not include the tpacket_auxdata structure don't | |
1124 | bother allocating the cmsgbuf as it isn't necessary and we don't have | |
1125 | a proper length for it. | |
1126 | [ISC-Bugs #39209] | |
01a44a77 | 1127 | |
0e76cb91 TM |
1128 | - Remove the dst directory. This was replaced in 4.2.0 with the dst |
1129 | code from the Bind libraries but we continued to include it for | |
1130 | backwards compatibility. As we have now released 4.3.x it seems | |
1131 | reasonable to remove it. | |
1132 | [ISC-Buts #39019] | |
1133 | ||
1134 | - Write out the DUID server id on startup in all cases, previously if it | |
1135 | was read in from server-duid option in the config or lease files for | |
1136 | DHCPv4 it would not be written to the new lease file. | |
1137 | [ISC-Bugs #37791] | |
1138 | ||
1139 | - When parsing dates for leases convert dates past 2038 to "never". | |
1140 | This avoids problems with integer overflows in the date and time | |
1141 | handling code for people that decide to use very large lease times | |
1142 | or add a lease entry with a date far in the future. | |
1143 | [ISC-Bugs #33056] | |
1144 | ||
1145 | - Leave the siaddr field clear when sending a NACK as per RFC 2131 | |
1146 | table 3. | |
1147 | [ISC-Bugs #38769] | |
1148 | ||
1149 | - In the client don't send expired addresses to the script as part of | |
1150 | the binding process. Thanks to Sven Trenkel at Google for reporting | |
1151 | the issue and suggesting the patch. | |
1152 | [ISC-Bugs #38631] | |
1153 | ||
1154 | - While parsing IPv6 addresses treat "add" as part of the address instead | |
1155 | of as a token. | |
1156 | [ISC-Bugs #39529] | |
1157 | ||
1158 | - Add support for accessing the v4 lease queues (active, free etc) in a | |
1159 | binary fashion instead of needing to walk through a linear list to | |
1160 | insert, find or remove an entry from the queues. In addition add a | |
1161 | compile time option "--enable-binary-leases" to enable the new code | |
1162 | or to continue using the old code. The old code is the default. | |
1163 | Thanks to Fernando Soto from BlueCat Networks for the patch. | |
1164 | [ISC-Bugs #39078] | |
1165 | ||
1166 | - Delayed-ack now works properly with Failover. Prior to this, bind updates | |
1167 | post startup were being queued but never delivered. Among other things, this | |
1168 | was causing leases to not transition from expired or released to free. | |
1169 | [ISC-Bugs #31474] | |
1170 | ||
1171 | - Clean up parsing of v6 lease files a bit to avoid infinite loops if the | |
1172 | lease file is corrupt in certain ways. | |
1173 | [ISC-Bugs #39760] | |
1174 | ||
1175 | - Corrected a crash in dhclient that occurs during lease renewal if the | |
1176 | client is performing its own DNS updates. Thanks to Jiri Popelka at Red Hat | |
1177 | for the bug report. | |
1178 | [ISC-Bugs #38639] | |
1179 | ||
1180 | - Corrected an issue in v6 lease file parsing. Prior to this, when encountering | |
1181 | a lease with an address for which no configured pool exists, the server was | |
1182 | declaring the lease file corrupt and incorrectly skipping over the subsequent | |
1183 | entry in the file. The server will now emit a log message indicating that | |
1184 | no pool was found for the address (or prefix) and correctly resume parsing | |
1185 | with the next entry in the lease file. Our thanks to Michal Žejdl for | |
1186 | reporting the issue. | |
1187 | [ISC-Bugs #39314] | |
1188 | ||
1189 | - Be more liberal in finding a subnet group associated with a static | |
1190 | prefix. When we added the class matching code for v6 we also added | |
1191 | a requirement that the static prefix must be within a subnet the | |
1192 | client was in, in order to find the proper statements. We now | |
1193 | look for a subnet based on the prefix, failing that on the static | |
1194 | address for the client and failing that on the shared network | |
1195 | itself. | |
1196 | [ISC-Bugs #38329] | |
1197 | ||
1198 | - Add a new action expression "parse_vendor_options", which can be used | |
1199 | to parse a vendor-encapsualted-option received by the server based on | |
1200 | the encoding specified by the vendor-option-space statement. | |
1201 | [ISC-Bugs #36449] | |
1202 | ||
1203 | - Enhance the PARANOIA patch to include fchown() the lease file to | |
1204 | allow it to be manipulated after the server does a chown(). | |
1205 | Thanks to Jiri Popelka at Red Hat for the patch. | |
1206 | [ISC-Bugs #36978] | |
1207 | ||
1208 | - Relax the requirement that prefix pools must be within the subnet. | |
1209 | This was added in as part of #32453 in order to avoid configuration | |
1210 | mistakes but is being removed as prefixes aren't required to be | |
1211 | within the same subnet and many people configure them in that fashion. | |
1212 | [ISC-Bugs #40077] | |
1213 | ||
1214 | - Fixed a server crash that could occur when the server attempts to remove | |
1215 | the billing class from the last lease billed to a dynamic class after said | |
1216 | class has been deleted. Our thanks to Lasse Pesonen for reporting the | |
1217 | issue. | |
1218 | [ISC-Bugs #39978] | |
1219 | ||
1220 | - LDAP Patches - Numerous small patches submitted by contributors have | |
1221 | been applied to the contributed code which supplies LDAP support. | |
1222 | In addition, two larger submissions have also been included. The | |
1223 | first adds support for IPv6 configuration and the second provides | |
1224 | GSSAPI authentication. We would like to thank the following for their | |
1225 | contributions (alphabetically): | |
1226 | Alex Novak at SUSE | |
1227 | Bill Parker (wp02855 at gmail dot com) | |
1228 | Jiri Popelka at Red Hat | |
1229 | Marius Tomaschewski at SUSE | |
1230 | (william at adelaide.edu.au), The University of Adelaide | |
1231 | [ISC-Bugs #39056] | |
1232 | [ISC-Bugs #22742] | |
1233 | [ISC-Bugs #24449] | |
1234 | [ISC-Bugs #28545] | |
1235 | [ISC-Bugs #29873] | |
1236 | [ISC-Bugs #30183] | |
1237 | [ISC-Bugs #30402] | |
1238 | [ISC-Bugs #32217] | |
1239 | [ISC-Bugs #32240] | |
1240 | [ISC-Bugs #33176] | |
1241 | [ISC-Bugs #33178] | |
1242 | [ISC-Bugs #36409] | |
1243 | [ISC-Bugs #36774] | |
1244 | [ISC-Bugs #37876] | |
1245 | ||
1246 | - Handle an out of memory condition in the client a bit better. | |
1247 | Thanks to Frédéric Perrin from Brocade for finding the issue | |
1248 | and suggesting a patch. | |
1249 | [ISC-Bugs #39279] | |
1250 | ||
1251 | Changes since 4.3.2rc2 | |
1252 | - None | |
1253 | ||
1254 | Changes since 4.3.2rc1 | |
1255 | ||
1256 | - Corrected a compilation error introduced by the fix for ISC-Bugs #37415. | |
1257 | The error occurs on Linux variants that do not support VLAN tag information | |
1258 | in packet auxiliary data. The configure script now only enables inclusion | |
1259 | of the VLAN tag-based logic if it is supported by the underlying OS. | |
1260 | [ISC-Bugs #38677] | |
1261 | ||
1262 | Changes since 4.3.2b1 | |
1263 | ||
1264 | - Specifying the option, --disable-debug, on the configure script command line | |
1265 | now disables debug features. Prior to this, specifying --disable-debug | |
1266 | incorrectly enabled debug features. Thanks to Gustavo Zacarias for reporting | |
1267 | the issue. | |
1268 | [ISC-Bugs #37780] | |
1269 | ||
1270 | - Unit test execution now uses a path augmented during configuration | |
1271 | processing of the --with-atf option to locate ATF runtime tools, atf-run | |
1272 | and atf-report. For most installations of ATF, this should alleviate the | |
1273 | need to manually include them in the PATH, as was formerly required. | |
1274 | If the configure script cannot locate the tools it will emit a warning, | |
1275 | informing the user that the tools must be in the PATH when running unit | |
1276 | tests. | |
1277 | Secondly, please note that "make check" will now exit with a failure status | |
1278 | code (non-zero) if one or more unit tests fail. This means that invoking | |
1279 | "make check" from an upper level directory will cause the make process to | |
1280 | STOP after the first test subdirectory with failed test(s). To force all | |
1281 | tests in all subdirectories to run, regardless of individual test outcome, | |
1282 | use the command "make -k check". | |
1283 | [ISC-Bugs #38619] | |
1284 | ||
1285 | Changes since 4.3.1 | |
1286 | ||
1287 | - Corrected parser's right brace matching when a statement contains an error. | |
1288 | [ISC-Bugs #36021] | |
1289 | ||
1290 | - TSIG-authenticated dynamic DNS updates now support the use of these | |
1291 | additional algorithms: hmac-sha1, hmac-sha224, hmac-sha256, hmac-sha384, | |
1292 | and hmac-sha512 | |
1293 | [ISC-Bugs #36947] | |
1294 | ||
1295 | - Added check for invalid failover message type. Thanks to Tobias Stoeckmann | |
1296 | working with the OpenBSD project who spotted the issue and provided the | |
1297 | patch. | |
1298 | [ISC-Bugs #36653] | |
1299 | ||
1300 | - Corrected rate limiting checks for bad packet logging. Thanks to Tobias | |
1301 | Stoeckmann working with the OpenBSD project who spotted the issue and | |
1302 | provided the patch. | |
1303 | [ISC-Bugs #36897] | |
1304 | ||
1305 | - Log statements depicting what files will be used by the server now occur | |
1306 | after the configuration file has been processed. | |
1307 | [ISC-Bugs #36671] | |
1308 | ||
1309 | - Addressed Coverity issues reported as of 07-31-2014: | |
1310 | [ISC-Bugs #36712] Corrects Coverity reported "high" impact issues. | |
1311 | [ISC-Bugs #36933] Corrects Coverity reported "medium" impact issues | |
1312 | [ISC-Bugs #37708] Fixes compilation error in dst_api.c seen in older | |
1313 | compilers that was introduced by #36712 | |
1314 | ||
1315 | - Server now supports a failover split value of 256. | |
1316 | [ISC-Bugs] #36664] | |
1317 | ||
1318 | - Remove unneeded error #defines. These defines were included in case | |
1319 | external programs required the older versions of the macro. They | |
1320 | have been #ifdeffed for now and will be removed at a future date. | |
1321 | See site.h for the #define to include them again, but you should | |
1322 | switch to using the DHCP_R_* versions instead of the ISC_R_* versions. | |
1323 | Also ISC_R_MULTIPLE has been removed as it is also defined in bind. | |
1324 | [ISC-Bugs #37128] | |
1325 | ||
1326 | - Added checks in range6 and prefix6 statement parsing to ensure addresses | |
1327 | are within the declared subnet. Thanks to Jiri Popelka at Red Hat for the | |
1328 | bug report and patch. | |
1329 | [ISC-Bugs #32453] | |
1330 | [ISC-Bugs #17766] | |
1331 | [ISC-Bugs #18510] | |
1332 | [ISC-Bugs #23698] | |
1333 | [ISC-Bugs #28883] | |
1334 | ||
1335 | - Addressed checksum issues: | |
1336 | Added checksum readiness check to Linux packet filtering which eliminates | |
1337 | invalid packet drops due to checksum errors when checksum offloading is | |
1338 | in use. Based on dhcp-4.2.2-xen-checksum.patch made to the Fedora project. | |
1339 | [ISC-Bugs #22806] | |
1340 | [ISC-Bugs #15902] | |
1341 | [ISC-Bugs #17739] | |
1342 | [ISC-Bugs #18010] | |
1343 | [ISC-Bugs #22556] | |
1344 | [ISC-Bugs #29769] | |
1345 | Inbound packets with UDP checksums of 0xffff now validate correctly rather | |
1346 | than being dropped. | |
1347 | [ISC-Bugs #24216] | |
1348 | [ISC-Bugs #25587] | |
1349 | ||
1350 | - Added the echo-client-id configuration parameter to the server configuration. | |
1351 | The server now supports RFC 6842 compliant behavior by setting a new | |
1352 | configuration parameter, echo-client-id. When enabled, the server will | |
1353 | include the client identifier option (Option code 61) if received, in its | |
1354 | responses. The server identifier returned in NAKs (if enabled) will now | |
1355 | be the globally defined value (if one) if the server cannot attribute the | |
1356 | inbound request to a known subnet. | |
1357 | [ISC-Bugs #35958] | |
1358 | [ISC-Bugs #32545] | |
1359 | ||
1360 | - Added support of the configuration parameter, use-host-decl-names, to | |
1361 | BOOTP request handling. | |
1362 | [ISC-Bugs #36233] | |
1363 | ||
1364 | - Added logic to ignore the signal, SIGPIPE, which ensures write failures | |
1365 | will be delivered as errors rather than as SIGPIPE signals on all OSs. | |
1366 | Thanks to Marius Tomaschewski from SUSE who reported the issue and provided | |
1367 | the patch upon which the fix is based. | |
1368 | [ISC-Bugs #32222] | |
1369 | ||
1370 | - In the failover code, handle the case of communications being interrupted | |
1371 | when the servers are dealing with POTENTIAL-CONFLICT. This patch allows | |
1372 | the primary to accept the secondary moving from POTENTIAL-CONFLICT to | |
1373 | RESOLUTION-INTERRUPTED as well as handling the bind update process better. | |
1374 | In addition the code to resend update or update all requests has been | |
1375 | modified to send requests more often. | |
1376 | [ISC-Bugs #36810] | |
1377 | [ISC-Bugs #20352] | |
1378 | ||
1379 | - By default, the server will now choose the value to use in the forward DNS | |
1380 | name from the following in order of preference: | |
1381 | ||
1382 | 1. FQDN option if provided by the client | |
1383 | 2. Host name option if provided by the client | |
1384 | 3. Configured option host-name if defined | |
1385 | ||
1386 | As before, this may be overridden by defining ddns-hostname to the desired | |
1387 | value (or expression). In addition, the server logic has been extended to | |
1388 | use the value of the host name declaration if use-host-decl-names is enabled | |
1389 | and no other value is available. | |
1390 | [ISC-Bugs #21323] | |
1391 | ||
1392 | - DNS updates were being attempted when dhcp-cache-threshold enabled the use of | |
1393 | the existing lease and the forward DNS name had not changed. This has been | |
1394 | corrected. | |
1395 | [ISC-Bugs #37368] | |
1396 | [ISC-Bugs #38636] | |
1397 | ||
1398 | - Corrected an issue which caused dhclient to incorrectly form the result when | |
1399 | prepending or appending to the IPv4 domain-search option, received from the | |
1400 | server, when either of the values being combined contain compressed | |
1401 | components. | |
1402 | [ISC-Bugs #20558] | |
1403 | ||
1404 | - Added the server-id-check parameter to the server configuration. | |
1405 | This parameter allows run-time control over whether or not a server, | |
1406 | participating in failover, verifies the dhcp-server-identifier option in | |
1407 | DHCP REQUESTs against the server's id before processing the request. | |
1408 | Formerly, enabling this behavior was done at compilation time through | |
1409 | the use of the #define, SERVER_ID_CHECK, which has been removed from site.h | |
1410 | The functionality is now only available through the new runtime parameter. | |
1411 | [ISC-Bugs #37551] | |
1412 | ||
1413 | - During startup, when the server encounters a lease whose binding state is | |
1414 | FTS_BACKUP but whose pool has no configured failover peer, it will reset the | |
1415 | lease's binding state to FTS_FREE. This allows the leases to be reclaimed | |
1416 | by the server after a pool's configuration has changed from failover to | |
1417 | standalone. Prior to this such leases would remain stuck in the backup state | |
1418 | making them unavailable for assignment. Note this conversion will occur | |
1419 | whether or not the server is compiled for failover. | |
1420 | [ISC-Bugs #36960] | |
1421 | ||
1422 | - Fixed a small issue in the treatment of hosts in the inform processing | |
1423 | that could cause the response to an inform to include information from | |
1424 | the wrong scope. The two examples we've heard of are getting subnet | |
1425 | instead of group information associated with a host entry, or getting | |
1426 | global information instead of subnet if the host entry was built via | |
1427 | omapi. Thanks to Julien Soula at University of Lille for finding the | |
1428 | bug and supplying a patch. | |
1429 | [ISC-Bugs #35712] | |
1430 | ||
1431 | - Avoid calling pool_timer() recursively from supersede_lease(). This could | |
1432 | result in leases changing state incorrectly or delaying the running of the | |
1433 | leae expiration code. | |
1434 | [ISC-Bugs #38002] | |
1435 | ||
1436 | - Move the check for a PID file and process to be before we rewrite the | |
1437 | lease file. This avoids the possibility of starting a second instance | |
1438 | of a server which changes the current lease file confusing the first | |
1439 | instance. This check is only included if the admin hasn't disabled PID | |
1440 | files. | |
1441 | [ISC-Bugs #38078] | |
1442 | [ISC-Bugs #38143] | |
1443 | ||
1444 | - In the client code change the way preferred_life and max_life are printed | |
1445 | for environment variables to be unsigned rather than signed. | |
1446 | Thanks to Jiri Popelka at Red Hat for the bug report and patch. | |
1447 | [ISC-Bugs #37084] | |
1448 | ||
1449 | - Modified Linux packet handling such that packets received via VLAN are now | |
1450 | seen only by the VLAN interface. Prior to this, such packets were seen by | |
1451 | both the VLAN interface and its parent (physical) interface, causing the | |
1452 | server to respond to both. Note this remains an issue for non-Linux OSs. | |
1453 | Thanks to Jiri Popelka at Red Hat for the patch. | |
1454 | [ISC-Bugs #37415] | |
1455 | [ISC-Bugs #37133] | |
1456 | [ISC-Bugs #36668] | |
1457 | [ISC-Bugs #36652] | |
1458 | ||
1459 | - Log content has been changed to more directly suggest that admins should | |
1460 | check for multiple IPv6 clients attempting to use the same DUID when only | |
1461 | abandoned addresses are available. Debug level logging will now emit counts | |
1462 | of the total number of, in-use, and abandoned addresses in a shared subnet | |
1463 | when the server finds no addresses available for a given DUID. Lastly, | |
1464 | threshold logging is now automatically disabled for shared subnets whose | |
1465 | total number of possible addresses exceeds (2^64)-1. | |
1466 | [ISC-Bugs #26376] | |
1467 | [ISC-Bugs #38131] | |
1468 | ||
1469 | - Added a global parameter, prefix-length-mode, which may be used to determine | |
1470 | how the server uses a non-zero value for prefix-length supplied by clients | |
1471 | when soliciting DHCPv6 prefixes. The server supports selection modes of: | |
1472 | ignore, prefer, exact, minimum and maximum which are described in detail in | |
1473 | the server man pages. The prior behavior of the server was to only offer a | |
1474 | prefix whose length exactly matched the prefix-length value requested. If | |
1475 | no such prefixes were available, the server returned a status of none | |
1476 | available. Note the default mode, "exact", provides this same behavior. | |
1477 | [ISC-Bugs #36780] | |
1478 | [ISC-Bugs #32228] | |
1479 | ||
1480 | - Corrected inconsistencies in dhcrelay's setting the upper interface hop count | |
1481 | limit such that it now sets it to 32 when the upstream address is a multicast | |
1482 | address per RFC 3315 Section 20. Prior to this if the -u argument preceded | |
1483 | the -l argument on the command line or if the same interface was specified | |
1484 | for both; the logic to set the hop limit count for the upper interface was | |
1485 | skipped. This caused the hop count limit to be set to the default value | |
1486 | (typically 1) in the outbound upstream packets. | |
1487 | [ISC-Bugs #37426] | |
1488 | ||
1489 | Changes since 4.3.1b1 | |
1490 | ||
1491 | - Modify the linux and openwrt dhclient scripts to process information | |
1492 | from a stateless request. Thanks to Jiri Popelka at Red Hat for the | |
1493 | bug report and patch. | |
1494 | [ISC-Bugs #36102] | |
01a44a77 | 1495 | |
0e76cb91 TM |
1496 | - Remove more unused RCSID tags. These weren't noticed in 4.3 as |
1497 | the code isn't used anymore but we remove them here to keep the | |
1498 | code consistent across versions. | |
1499 | [ISC-Bugs #36451] | |
01a44a77 | 1500 | |
0e76cb91 | 1501 | Changes since 4.3.0 |
01a44a77 | 1502 | |
0e76cb91 TM |
1503 | - Tidy up several small tickets. |
1504 | Correct parsing of DUID from config file, previously the LL type | |
1505 | was put in the wrong place in the DUID string. | |
1506 | [ISC-Bugs #20962] | |
1507 | Add code to parse "do-forward-updates" as well as "do-forward-update" | |
1508 | Thanks to Jiri Popelka at Red Hat. | |
1509 | [ISC-Bugs #31328] | |
1510 | Remove log_priority as it isn't currently used. | |
1511 | [ISC-Bugs #33397] | |
1512 | Increase the size of the buffer used for reading interface information. | |
1513 | [ISC-Bugs #34858] | |
01a44a77 | 1514 | |
0e76cb91 TM |
1515 | - Remove an extra set of the msg_controllen variable. |
1516 | [ISC-Bugs #21035] | |
01a44a77 | 1517 | |
0e76cb91 TM |
1518 | - Add a more understandable error message if a configuration attempts |
1519 | to add multiple keys for a single zone. Thanks to a patch from Jiri | |
1520 | Popelka at Red Hat. | |
1521 | [ISC-Bugs #31892] | |
f2e70402 | 1522 | |
0e76cb91 TM |
1523 | - Fix some minor issues in the dst code. |
1524 | [ISC-Bugs #34172] | |
51ce5995 | 1525 | |
0e76cb91 TM |
1526 | - Properly #ifdef functions so that the code can compile without NSUPDATE. |
1527 | [ISC-Bugs #35058] | |
9b7d458d | 1528 | |
0e76cb91 TM |
1529 | - Update the partner's stos (start time of state, basically when we last |
1530 | heard from this partner) field when updating the state in failover. | |
1531 | [ISC-Bugs #35549] | |
9b7d458d | 1532 | |
0e76cb91 TM |
1533 | - Modify the overload processing to allow space for the remote agent ID. |
1534 | [ISC-Bugs #35569] | |
1535 | Handle the ordering of the SUBNET_MASK option even if it is the last | |
1536 | option in the list. | |
1537 | [ISC-Bugs #24580] | |
9b7d458d | 1538 | |
0e76cb91 TM |
1539 | - Remove the code that allows a server to follow RFC3315 instead of |
1540 | the subsequent errata from August 2010 when determining which IAs | |
1541 | to include if no addresses will be assigned. | |
1542 | [ISC-Bugs #28938] | |
2c8a396a | 1543 | |
0e76cb91 TM |
1544 | - Remove unused RCSID tags. |
1545 | [ISC-Bugs #35846] | |
9b7d458d | 1546 | |
0e76cb91 TM |
1547 | - Correct the v6 client timing code. When doing the timing backoff |
1548 | for MRT limit it to MRD. | |
1549 | Thanks to Jiri Popelka at Red Hat for the bug report and fix. | |
1550 | [ISC-Bugs #21238 | |
66e80033 | 1551 | |
0e76cb91 TM |
1552 | - Add a log entry when killing a client and remove the PID files |
1553 | when a server, relay or client are killed. | |
1554 | [ISC-Bugs #16970] | |
1555 | [ISC-Bugs #17258] | |
9b7d458d | 1556 | |
0e76cb91 TM |
1557 | - Some minor cleanups in the client code. |
1558 | In addition to checking for dhcpc check for bootpc in the services list. | |
1559 | [ISC-Bugs #18933] | |
1560 | Correct the client code to only try to get a lease once when the | |
1561 | given the "-1" argument. | |
1562 | Thanks to Jiri Popelka at Red Hat for the bug report and fix. | |
1563 | [ISC-Bugs #26735] | |
1564 | When asked for the version don't send the output to syslog. | |
1565 | [ISC-Bugs #29772] | |
1566 | Add the next server information to the environment variables for | |
1567 | use by the client script. In order to avoid changing the client | |
1568 | lease file the next server information isn't written to it. | |
1569 | Thanks to Tomas Hozza at Red Hat for the suggestion and a prototype fix. | |
1570 | [ISC-Bugs #33098] | |
e191f1e8 | 1571 | |
0e76cb91 TM |
1572 | - Several updates to the dhcp server code. |
1573 | When not in quiet mode print out the files being used. | |
1574 | [ISC-Bugs #17551] | |
1575 | As accessing some pid files may require privileges move the dropping | |
1576 | of permission bits due to the paranoia patch to be after the pid code. | |
1577 | Thanks to Jiri Popelka at Red Hat for the bug report and fix. | |
1578 | [ISC-Bugs #25806] | |
1579 | When processing a "--version" request don't output the version information | |
1580 | to syslog. | |
9b7d458d | 1581 | |
0e76cb91 TM |
1582 | - Add the "enable-log-pid" build option to the configure script. When enabled |
1583 | this causes the client, server and relay programs to include the PID | |
1584 | number in syslog messages. | |
1585 | Thanks to Marius Tomaschewski for the suggestion and proto-patch. | |
1586 | [ISC-Bugs #29713] | |
9b7d458d | 1587 | |
0e76cb91 TM |
1588 | - Add a #define to specify the prefix length used when a client attempts |
1589 | to configure an address. This can be modified by editing includes/site.h. | |
1590 | By default it is set to 64. While 128 might be a better choice it would | |
1591 | also be a change for currently running systems, so we have left it at 64. | |
1592 | [ISC-Bugs #DHCP-2] | |
9b7d458d | 1593 | |
0e76cb91 TM |
1594 | - Add a run time option to the client "-df" to allow the administrator to |
1595 | point to a second lease file the client can search for a DUID. This can | |
1596 | be used to allow a v4 and a v6 instance of the client to share a DUID. | |
1597 | The second file will only be searched if there isn't a DUID in the main | |
1598 | lease file and the DUID will be written out to the main lease file. | |
1599 | [ISC-Bugs #34886] | |
9b7d458d | 1600 | |
0e76cb91 TM |
1601 | - Have the client fsync the lease file to avoid lease corruption if the |
1602 | client hibernates or otherwise shuts down. | |
1603 | [ISC-Bugs #35894] | |
9b7d458d | 1604 | |
0e76cb91 TM |
1605 | - Add a check for L2VLAN in bpf.c to help support VLAN interfaces |
1606 | Thanks to Steinar Haug for the suggestion. | |
1607 | [ISC-Bugs #36033] | |
ece2d9da | 1608 | |
0e76cb91 TM |
1609 | - Modify the handling of the resolv.conf file to allow the DHCP |
1610 | process to start up even if the resolv.conf file has problems. | |
1611 | [ISC-Bugs #35989] | |
ab777749 | 1612 | |
0e76cb91 TM |
1613 | - Add threshold logging functionality. Two new options, |
1614 | log-threshold-low and log-threshold-high, indicate to the | |
1615 | server if and when it should log an error message as addresses | |
1616 | in a pool are used. | |
1617 | [ISC-Bugs #34487] | |
6ec59010 | 1618 | |
0e76cb91 TM |
1619 | - Add code to properly dereference a pointer in the dhclient code |
1620 | on an error condition. | |
1621 | [ISC-Bugs #36194] | |
63ccfbb0 | 1622 | |
0e76cb91 TM |
1623 | - Add code to help clean up soft leases. |
1624 | [ISC-Bugs #36304] | |
babe4149 | 1625 | |
0e76cb91 TM |
1626 | - Disable the gentle shutdown functionality until we can determine |
1627 | the best way to present it to remove or reduce the side effects. | |
1628 | [ISC-Bugs #36066] | |
d1489a35 | 1629 | |
0e76cb91 | 1630 | Changes since 4.3.0rc1 |
e39b4193 | 1631 | |
0e76cb91 TM |
1632 | - None |
1633 | Changes since 4.3.0b1 | |
2d542e1e | 1634 | |
0e76cb91 TM |
1635 | - Tidy up receive packet processing. |
1636 | Thanks to Brad Plank of GTA for reporting the issue and suggesting | |
1637 | a possible patch. | |
1638 | [ISC-Bugs #34447] | |
abacf8ad | 1639 | |
0e76cb91 TM |
1640 | Changes since 4.3.0a1 |
1641 | ||
1642 | - Modify the message displayed when a process hits a fatal error. | |
1643 | The new message is much shorter and simply points to the README | |
1644 | and our website for directions on bug submissions. | |
1645 | [ISC-Bugs #24789] | |
1a6b62fe | 1646 | |
6980ae03 | 1647 | Changes since 4.2.0 (new features) |
51b8a8a0 SR |
1648 | |
1649 | - If a client renews before 'dhcp-cache-threshold' percent of its lease | |
1650 | has elapsed (default 25%), the server will reuse the allocated lease | |
1651 | (provide a lease within the currently allocated lease-time) rather | |
1652 | than extend or renew the lease. This absolves the server of needing | |
1653 | to perform an fsync() operation on the lease database before reply, | |
1654 | which improves performance. [ISC-Bugs #22228] | |
80778e94 | 1655 | Updated this patch to support asynchronous DDNS. If the server is |
adb95d23 | 1656 | attempting to do DDNS on a lease it should be updated and written to |
4809ef5c | 1657 | disk even if that wouldn't be necessary due to the thresholding. |
8cd88e20 | 1658 | [ISC-Bugs #26311] |
51b8a8a0 | 1659 | |
6980ae03 SR |
1660 | - The 'no available billing' log line now also logs the name of the last |
1661 | matching billing class tried before failing to provide a billing. | |
1662 | [ISC-Bugs #21759] | |
1663 | ||
32e651c4 SR |
1664 | - A problem with missing get_hw_addr function when --enable-use-sockets |
1665 | was used is now solved on GNU/Linux, BSD and GNU/Hurd systems. Note | |
1666 | that use-sockets feature was not tested on those systems. Client and | |
1667 | server code no longer use MAX_PATH constant that is not defined on | |
3cb6f9bb | 1668 | GNU/Hurd systems. [ISC-Bugs #25979] |
32e651c4 | 1669 | |
67418698 SR |
1670 | - Add a perl script in the contrib directory, dhcp-lease-list.pl, which |
1671 | can parse v4 lease files and output the lease information in a more | |
1672 | human friendly manner. This was written by Christian Hammers with | |
1673 | some updates by vom and ISC. This is contributed code and is not | |
1674 | supported by ISC; however it may be useful to some users. | |
1675 | [ISC-Bugs #20680] | |
1676 | ||
a7341359 | 1677 | - Add support in v6 for on-commit, on-expire and on-release. |
4809ef5c | 1678 | [ISC-Bugs #27912] |
a7341359 | 1679 | |
01fa619f SR |
1680 | - Add support for using classes with v6. |
1681 | [ISC-Bugs #26510] | |
1682 | ||
d7d9c0c7 SR |
1683 | - Update the DDNS code to current standards and allow for sharing |
1684 | of DDNS entries between v4 and v6 clients. The new code is used | |
1685 | if the ddns-update-style is set to "standard", the older code is | |
1686 | still available if ddns-update-style is set to "interim". The | |
1687 | oldest DDNS code "ad-hoc" has been removed. Thanks to Thomas Pegeot | |
1688 | who submitted a patch for this issue. This patch is based on | |
1689 | that work with some modifications. | |
64fb661c | 1690 | [ISC-Bugs #21139] |
1534fff7 | 1691 | |
cde11a4c SR |
1692 | - Add a configuration option to the server to suppress using fsync(). |
1693 | Enabling this option will mean that fsync() is never called. This | |
1694 | may provide better performance but there is also a risk that a lease | |
1695 | will not be properly written to the disk after it has been issued | |
1696 | to a client and before the server stops. Using this option is | |
1697 | not recommended. | |
64fb661c | 1698 | [ISC-Bugs #34810] |
cde11a4c | 1699 | |
f88446f1 SR |
1700 | - Add some logging statements to indicate when the server is ready |
1701 | to serve. One statement is emitted after the server has finished | |
1702 | reading its files and is about to enter the dispatch loop. | |
1703 | This is "Server starting service.". | |
1704 | The second is emitted when a server determines that both it and | |
1705 | its failover peer are in the normal state. | |
1706 | This is "failover peer <name>: Both servers normal." | |
64fb661c | 1707 | [ISC-Bugs #33208] |
f88446f1 | 1708 | |
619304cd SR |
1709 | - Add support for accessing options from v6 relays. The v6relay |
1710 | statement allows the administrator to choose which relay to | |
1711 | use when searching for an option, see the dhcp-options man page | |
6b9c9f87 SR |
1712 | for a description. The host-identifier option has also been |
1713 | updated to support the use of relay options, see the dhcpd.conf | |
619304cd SR |
1714 | man page for a description. |
1715 | [ISC-Bugs #19598] | |
1716 | ||
e54ff84f | 1717 | - When doing DDNS if there isn't an appropriate zone statement attempt |
80778e94 | 1718 | to find a reasonable nameserver via a DNS resolver. This restores |
e54ff84f SR |
1719 | some functionality that was lost in the transition to asynchronous |
1720 | DDNS. Due to the lack of security and increase in fragility of the | |
1721 | system when using this feature we strongly recommend the use of | |
1722 | appropriate zone statements rather than using this functionality. | |
1723 | [ISC-Bugs #30461] | |
1724 | ||
61ef216b SR |
1725 | - Add support for specifying the address from which to send |
1726 | DDNS updates on the DHCP server. There are two new options | |
1727 | "ddns-local-address4" and "ddns-local-address6" that each take | |
1728 | one instance of their respective address types. | |
1729 | [ISC-Bugs #34779] | |
4d079f0e | 1730 | |
38ee81bd SR |
1731 | - Add ignore-client-uids option in the server. This option causes |
1732 | the server to not record a client's uid in its lease. This | |
1733 | violates the specification but may also be useful when a client | |
1734 | can dual boot using different client ids but the same mac address. | |
6b9c9f87 | 1735 | Thank you to Brian De Wolf at Cal Poly Pomona for the patch. |
38ee81bd SR |
1736 | [ISC-Bugs #32427] |
1737 | [ISC-Bugs #35066] | |
4d079f0e SR |
1738 | |
1739 | - Extend the DHCPINFORM processing to honor the subnet selection option | |
1740 | and take host declarations into account. | |
1741 | Thanks to Christof Chen for testing and submitting the patch. | |
1742 | [ISC-Bugs #35015] | |
1743 | ||
fe2ac9e3 SR |
1744 | - Extend the hardware expression to look into the lease structure |
1745 | for a hardware address if there is no packet. This allows the | |
1746 | server to find the hardware address during on-expiry processing. | |
1747 | [ISC-Bugs #24584] | |
61ef216b | 1748 | |
bc30c84e SR |
1749 | - Add definitions for some options that have been specified by the IETF. |
1750 | [ISC-Bugs #29268] | |
ccc2a367 | 1751 | [ISC-Bugs #35198] |
bc30c84e | 1752 | |
01a44a77 | 1753 | Changes since 4.2.0 (bug fixes) |
8ee352ee | 1754 | |
01a44a77 SR |
1755 | - When using 'ignore client-updates;', the FQDN returned to the client |
1756 | is no longer truncated to one octet. | |
8ee352ee | 1757 | |
01a44a77 | 1758 | - Cleaned up an unused hardware address variable in nak_lease(). |
4889a646 | 1759 | |
01a44a77 SR |
1760 | - Manpage entries for the ia-pd and ia-prefix options were updated to |
1761 | reflect support for prefix delegation. | |
4889a646 | 1762 | |
01a44a77 | 1763 | - Cleaned up some compiler warnings |
7dc4e69c | 1764 | |
01a44a77 SR |
1765 | - An optimization described in the failover protocol draft is now included, |
1766 | which permits a DHCP server operating in communications-interrupted state | |
1767 | to 'rewind' a lease to the state most recently transmitted to its peer, | |
1768 | greatly increasing a server's endurance in communications-interrupted. | |
1769 | This is supported using a new 'rewind state' record on the dhcpd.leases | |
1770 | entry for each lease. | |
c5bc8b1a | 1771 | |
01a44a77 | 1772 | - Fix the trace code which was broken by the changes to the DDNS code. |
d0a10f6a | 1773 | |
01a44a77 SR |
1774 | - Update the fsync code to work with the changes to the DDNS code. It now |
1775 | uses a timer instead of noticing if there are no more packets to process. | |
dc9d7b08 | 1776 | |
01a44a77 SR |
1777 | - When constructing the DNS name structure from a text string append |
1778 | the root to relative names. This satisfies a requirement in the DNS | |
1779 | library that names be absolute instead of relative and prevents DHCP | |
1780 | from crashing. [ISC-Bugs #21054] | |
a24b9f23 | 1781 | |
01a44a77 SR |
1782 | - "The LDAP Patch" that has been circulating for some time, written by |
1783 | Brian Masney and S.Kalyanasundraram and maintained for application to | |
1784 | the DHCP-4 sources by David Cantrell has been included. Please be | |
1785 | advised that these sources were contributed, and do not yet meet the | |
1786 | high standards we place on production sources we include by default. | |
1787 | As a result, the LDAP features are only included by using a compile-time | |
1788 | option which defaults off, and if you enable it you do so under your | |
1789 | own recognizance. We will be improving this software over time. | |
1790 | [ISC-Bugs #17741] | |
c5bc8b1a | 1791 | |
01a44a77 SR |
1792 | - Prohibit including lease time information in a response to a DHCP INFORM. |
1793 | [ISC-Bugs #21092] | |
cc17cbc3 | 1794 | |
01a44a77 SR |
1795 | ! Accept a client id of length 0 while hashing. Previously the server would |
1796 | exit if it attempted to hash a zero length client id, providing attackers | |
1797 | with a simple denial of service attack. [ISC-Bugs #21253] | |
1798 | CERT: VU#541921 - CVE: CVE-2010-2156 | |
08b2d347 | 1799 | |
01a44a77 | 1800 | - A memory leak in ddns processing was closed. [ISC-Bugs #21377] |
08b2d347 | 1801 | |
01a44a77 SR |
1802 | - Modify the exception handling for initial context creation. Previously |
1803 | we would try and clean up before exiting. This could present problems | |
1804 | when the cleanup required part of the context that wasn't available. It | |
1805 | also didn't do much as we exited afterwards anyway. Now we simply log | |
1806 | the error and exit. [ISC-Bugs #21093] | |
ad4001ce | 1807 | |
01a44a77 SR |
1808 | - A bug was fixed that could cause the DHCPv6 server to advertise/assign a |
1809 | previously allocated (active) lease to a client that has changed subnets, | |
1810 | despite being on different shared networks. Dynamic prefixes specifically | |
1811 | allocated in shared networks also now are not offered if the client has | |
1812 | moved. [ISC-Bugs #21152] | |
3cb6f9bb | 1813 | |
01a44a77 | 1814 | - Add some debugging output for use with the DDNS code. [ISC-Bugs #20916] |
f6dc164f | 1815 | |
01a44a77 SR |
1816 | - Fix the trace code to handle timing events better and to truncate a file |
1817 | before using instead of overwriting it. [ISC-Bugs #20969] | |
4b8251a0 | 1818 | |
01a44a77 SR |
1819 | - Modify the determination of the default TTL to use for DDNS updates. |
1820 | The user may still configure the ttl via ddns-ttl. The default for | |
1821 | both v4 and v6 is now 1/2 the (preferred) lease time with a limit. The | |
1822 | previous defaults (1/2 lease time without a limit for v4 and a default | |
1823 | value for v6) may be used by defining USE_OLD_DDNS_TTL in site.h | |
1824 | [ISC-Bugs #21126] | |
47e8308d | 1825 | |
01a44a77 SR |
1826 | - libisc/libdns is now brought up to version 9.7.1rc1. This corrects |
1827 | three reported flaws in ISC DHCP; | |
d9b5c150 | 1828 | |
01a44a77 SR |
1829 | o DHCP processes (dhcpd, dhclient) fail to start if one of either the |
1830 | IPv4 or IPv6 address families is not present. [ISC-Bugs #21122] | |
08e6dad9 | 1831 | |
01a44a77 SR |
1832 | o Assertion failure when attempting to cancel a previously running DDNS |
1833 | update. [ISC-Bugs #21133] | |
9f9265b6 | 1834 | |
01a44a77 SR |
1835 | o Compilation failure of libisc/libdns due to the use of a flexible |
1836 | array member. [ISC-Bugs #21316] | |
9f9265b6 | 1837 | |
01a44a77 | 1838 | - Add declaration for variable in debug code in alloc.c. [ISC-Bugs #21472] |
35de6c8c | 1839 | |
01a44a77 SR |
1840 | - Documentation cleanup covering multiple tickets |
1841 | [ISC-Bugs #20265] [ISC-Bugs #20259] minor cleanup | |
1842 | [ISC-Bugs #20263] add text describing some default values | |
1843 | [ISC-Bugs #20193] single quotes at the start of a line indicate a control | |
1844 | line to nroff, escape them if we actually want a quote. | |
1845 | [ISC-Bugs #18916] sync the pointer to web pages amongst the different docs | |
de87ffe3 | 1846 | |
01a44a77 SR |
1847 | - 'get-host-names true;' now also works even if 'use-host-decl-names true;' |
1848 | was also configured. The nature of this repair also fixes another | |
1849 | error; the host-name supplied by a client is no longer overridden by a | |
1850 | reverse lookup of the lease address. Thanks to a patch from Wilco Baan | |
1851 | Hofman supplied to us by the Debian package maintenance team. | |
1852 | [ISC-Bugs #21691] {Debian Bug#509445} | |
e563ec2e | 1853 | |
01a44a77 SR |
1854 | - The .TH tag for the dhcp-options manpage was typo repaired |
1855 | thanks to a report from jidanni and the Debian package maintenance | |
1856 | team. [ISC-Bugs #21676] {Debian Bug#563613} | |
3bedb117 | 1857 | |
01a44a77 SR |
1858 | - More documentation changes - primarily to put the options in the dhclient |
1859 | and dhcpd man pages into the standard form. Thanks in part to a patch | |
1860 | from David Cantrell at Red Hat. | |
1861 | [ISC-Bugs #20264] and parts of [ISC-Bugs #17744] dhclient.8 changes | |
18a28679 | 1862 | |
01a44a77 SR |
1863 | - Add code to clear the pointer to an object in an OMAPI handle when the |
1864 | object is freed due to a dereference. [ISC-Bugs #21306] | |
0b2ec8c9 | 1865 | |
01a44a77 SR |
1866 | - Fixed a bug that leaks host record references onto lease structures, |
1867 | causing the server to apply configuration intended for one host to any | |
1868 | other innocent clients that come along later. [ISC-Bugs #22018] | |
67b2cb45 | 1869 | |
01a44a77 SR |
1870 | - Minor code fixes |
1871 | [ISC-Bugs #19566] When trying to find the zone for a name for ddns allow | |
1872 | the name to be at the apex of the zone. | |
1873 | [ISC-Bugs #19617] Restrict length of interface name read from command line | |
1874 | in dhcpd - based on a patch from David Cantrell at Red Hat. | |
1875 | [ISC-Bugs #20039] Correct some error messages in dhcpd.c | |
1876 | [ISC-Bugs #20070] Better range check on values when creating a DHCID. | |
9a111ee8 | 1877 | [ISC-Bugs #20198] Avoid writing past the end of the field when adding |
01a44a77 SR |
1878 | overly long file or server names to a packet and add a log message |
1879 | if the configuration supplied overly long names for these fields. | |
1880 | Thanks to Martin Pala. | |
1881 | [ISC-Bugs #21497] Add a little more randomness to rng seed in client | |
1882 | thanks to a patch from Jeremiah Jinno. | |
74977c94 | 1883 | |
01a44a77 | 1884 | - Correct error handling in DLPI [ISC-Bugs #20378] |
30e42327 | 1885 | |
01a44a77 SR |
1886 | - Remove __sun__ and __hpux__ typedefs in osdep.h as they are now being |
1887 | checked in configure. [ISC-Bugs #20443] | |
dbd65517 | 1888 | |
01a44a77 SR |
1889 | - Modify how the cmsg header is allocated the v6 send and received routines |
1890 | to compile on more compilers. [ISC-Bugs #20524] | |
0f750c4f | 1891 | |
01a44a77 SR |
1892 | - When parsing a domain name free the memory for the name after we are |
1893 | done with it. [ISC-Bugs #20824] | |
b95f1ee0 | 1894 | |
01a44a77 SR |
1895 | - Add an elapsed time option to the release message and refactor the |
1896 | code to move most of the common code to a single routine. | |
1897 | [ISC-Bugs #21171]. | |
b95f1ee0 | 1898 | |
01a44a77 SR |
1899 | - Two identical log messages for commit_leases() have been disambiguated. |
1900 | [ISC-Bugs #18915] | |
0ef9a46e | 1901 | |
01a44a77 SR |
1902 | - Parse date strings more properly - the code now handles semi-colons in |
1903 | date strings correctly. Thanks to a patch from Jiri Popelka at Red Hat. | |
1904 | [ISC-Bugs #21501, #20598] | |
de6c9af6 | 1905 | |
01a44a77 SR |
1906 | - Fixes to lease input and output. |
1907 | [ISC-Bugs #20418] - Some systems don't support the "%s" argument to | |
1908 | strftime, paste together the same string using mktime instead. | |
1909 | [ISC-Bugs #19596] - When parsing iaid values accept printable | |
1910 | characters. | |
1911 | [ISC-Bugs #21585] - Always print time values in omshell as hex | |
1912 | instead of ascii if the values happen to be printable characters. | |
87132514 | 1913 | |
01a44a77 SR |
1914 | - Minor changes for scripts, configure.ac and Makefiles |
1915 | [ISC-Bugs #19147] Use domain-search instead of domain-name in manual and | |
1916 | example conf file. Thanks to a patch from David Cantrell | |
1917 | at Red Hat. | |
1918 | [ISC-Bugs #19761] Restore address when doing a rebind in DHCPv6 | |
1919 | [ISC-Bugs #19945] Properly close the quote on some arguments. | |
1920 | [ISC-Bugs #20952] Add 64 bit types to configure.ac | |
adb95d23 | 1921 | [ISC-Bugs #21308] Add "PATH=" to CLIENT_PATH environment variable |
b047bd38 | 1922 | |
01a44a77 SR |
1923 | - Update the code to parse dhcpv6 lease files to accept a semi-colon at |
1924 | the end of the max-life and preferred-life clauses. In order to be | |
1925 | backwards compatible with older lease files not finding a semi-colon | |
1926 | is also accepted. [ISC-Bugs #22303]. | |
e3c94800 | 1927 | |
01a44a77 SR |
1928 | ! Handle a relay forward message with an unspecified address in the |
1929 | link address field. Previously such a message would cause the | |
e675b663 | 1930 | server to crash. Thanks to a report from John Gibbins. [ISC-Bugs #21992] |
01a44a77 | 1931 | CERT: VU#102047 CVE: CVE-2010-3611 |
dd9237c3 | 1932 | |
01a44a77 SR |
1933 | - ./configure on longer searches for -lcrypto to explicitly link against. |
1934 | This fixes a bug where 'dhclient' would have shared library dependencies | |
1935 | on '/usr/lib'. [ISC-Bugs #21967] | |
d13db163 | 1936 | |
01a44a77 SR |
1937 | - Handle pipe failures more gracefully. Some OSes pass a SIGPIPE |
1938 | signal to a process and will kill the process if the signal isn't | |
1939 | caught. This patch adds code to turn off the SIGPIPE signal via | |
1940 | a setsockopt() call. The signal is already being ignored as part | |
1941 | of the ISC library. [ISC-Bugs #22269] | |
b342f2e7 | 1942 | |
01a44a77 SR |
1943 | - Restore printing of values in omshell to the style pre 21585. For |
1944 | 21585 we changed the print routines to always display time values | |
1945 | as a hex list. This had a side effect of printing all data strings | |
1946 | as a hex list. We shall investigate other ways of displaying time | |
1947 | values more usefully. [ISC-Bugs #22626] | |
797aab67 | 1948 | |
01a44a77 SR |
1949 | ! Fix the handling of connection requests on the failover port. |
1950 | Previously a connection request from a source that wasn't | |
1951 | listed as a failover peer would cause the server to become | |
1952 | non-responsive. Thanks to a report from Brad Bendily, brad@bendily.com. | |
1953 | [ISC-Bugs #22679] | |
9a111ee8 | 1954 | CERT: VU#159528 CVE: CVE-2010-3616 |
bc7f8b8e | 1955 | |
01a44a77 SR |
1956 | - Don't pass the ISC_R_INPROGRESS status to the omapi signal handlers. |
1957 | Passing it through to the handlers caused the omshell program to fail | |
1958 | to connect to the server. [ISC-Bugs #21839] | |
d289ee68 | 1959 | |
adb95d23 | 1960 | - Fix the parenthesis in the code to process configuration statements |
01a44a77 SR |
1961 | beginning with "auth". The previous arrangement caused |
1962 | "auto-partner-down" to be processed incorrectly. [ISC-Bugs #21854] | |
d19fa5a1 | 1963 | |
01a44a77 SR |
1964 | - Limit the timeout period allowed in the dispatch code to 2^^32-1 seconds. |
1965 | Thanks to a report from Jiri Popelka at Red Hat. | |
1966 | [ISC-Bugs #22033], [Red Hat Bug #628258] | |
bb9189c3 | 1967 | |
01a44a77 SR |
1968 | - When processing the format flags for a given option consume the |
1969 | flag indicating an optional value correctly. A symptom of this | |
1970 | bug was an infinite loop when trying to parse the slp-service-scope | |
1971 | option. Thanks to a patch from Marius Tomaschewski. | |
1972 | [ISC-Bugs #22055] | |
cbbd2714 | 1973 | |
01a44a77 SR |
1974 | - Disable the use of kqueue in the ISC library. This avoids a problem |
1975 | between the fork and socket code that caused the dhcpd process to | |
1976 | use all available cpu if the program daemonized itself. | |
1977 | [ISC-Bugs #21911] | |
d208bb04 | 1978 | |
01a44a77 SR |
1979 | ! When processing a request in the DHCPv6 server code that specifies |
1980 | an address that is tagged as abandoned (meaning we received a | |
1981 | decline request for it previously) don't attempt to move it from | |
1982 | the inactive to active pool as doing so can result in the server | |
1983 | crashing on an assert failure. Also retag the lease as active | |
1984 | and reset its timeout value. | |
1985 | [ISC-Bugs #21921] | |
9a111ee8 | 1986 | |
01a44a77 SR |
1987 | - Removed the restriction on using IPv6 addresses in IPv4 mode. This |
1988 | allows IPv4 options which contain IPv6 addresses to be specified. For | |
1989 | example the 6rd option can be specified and used like this: | |
1990 | [ISC-Bugs #23039] | |
d208bb04 | 1991 | |
01a44a77 SR |
1992 | option 6rd code 212 = { integer 8, integer 8, |
1993 | ip6-address, array of ip-address }; | |
1994 | option 6rd 16 10 2001:: 1.2.3.4, 5.6.7.8; | |
25f664a6 | 1995 | |
01a44a77 SR |
1996 | - Handle some DDNS corner cases better. Maintain the DDNS transaction |
1997 | information when updating a lease and cancel any existing transactions | |
9a111ee8 | 1998 | when removing the ddns information. |
01a44a77 | 1999 | [ISC-Bugs #23103] |
d424157d | 2000 | |
01a44a77 SR |
2001 | - Some fixes for LDAP |
2002 | [ISC-Bugs #21783] - Include lber library when building ldap | |
2003 | [ISC-Bugs #22888] - Enable the ldap code when buidling common | |
2004 | The above fixes are from Jiri Popelka at Red Hat. | |
3221151b | 2005 | |
01a44a77 SR |
2006 | - Modify the dlpi code to accept getmsg() returning a positive value. |
2007 | [ISC-Bugs #22824] | |
bea17697 SR |
2008 | |
2009 | ! In dhclient check the data for some string options for | |
2010 | reasonableness before passing it along to the script that | |
2011 | interfaces with the OS. | |
2012 | [ISC-Bugs #23722] | |
2013 | CVE: CVE-2011-0997 | |
c7aa4dd4 TM |
2014 | |
2015 | - DHCPv6 server now responds properly if client asks for a prefix that | |
2016 | is already assigned to a different client. [ISC-Bugs #23948] | |
4a5bfeac SR |
2017 | |
2018 | - Add the option "--no-pid" to the client, relay and server code, | |
2019 | to disable writing a pid file. Add the option "-pf pidfile" | |
2020 | to the relay to allow the user to supply the pidfile name at | |
2021 | runtime. Add the "with-relay6-pid-file" option to configure | |
2022 | to allow the user to supply the pidfile name for the relay | |
2023 | in v6 mode at configure time. | |
2024 | [ISC-Bugs #23351] [ISC-Bugs #17541] | |
5d082abd TM |
2025 | |
2026 | - 'dhclient' no longer waits a random interval after first starting up to | |
2027 | begin in the INIT state. This conforms to RFC 2131, but elects not to | |
9a111ee8 | 2028 | implement a 'SHOULD' direction in section 4.1. The goal of this change |
73c83820 | 2029 | is to start up faster. [ISC-Bugs #19660] |
9a111ee8 TM |
2030 | |
2031 | - Added 'initial-delay' parameter that specifies maximum amount of time | |
2032 | before client goes to the INIT state. The default value is 0. In previous | |
2033 | versions of the code client could wait up to 5 seconds. The old behavior | |
5d082abd | 2034 | may be restored by using 'initial-delay 5;' in the client config file. |
73c83820 | 2035 | [ISC-Bugs #19660] |
5d082abd TM |
2036 | |
2037 | - ICMP ping-check should now sit closer to precisely the number of seconds | |
2038 | configured (or default 1), due to making use of the new microsecond | |
2039 | scale timer internally to dhcpd. This corrects a bug where the server | |
2040 | may immediately timeout an ICMP ping-check if it was made late in the | |
73c83820 | 2041 | current second. [ISC-Bugs #19660] |
5d082abd TM |
2042 | |
2043 | - The DHCP client will schedule renewal and rebinding events in | |
2044 | microseconds if the DHCP server provided a lease-time that would result | |
2045 | in sub-1-second timers. This corrects a bug where a 2-second or lower | |
2046 | lease-time would cause the DHCP client to enter an infinite loop by | |
73c83820 | 2047 | scheduling renewal at zero seconds. [ISC-Bugs #19660] |
5d082abd TM |
2048 | |
2049 | - Client lease records are recorded at most once every 15 seconds. This | |
2050 | keeps the client from filling the lease database disk quickly on very small | |
73c83820 | 2051 | lease times. [ISC-Bugs #19660] |
5d082abd TM |
2052 | |
2053 | - To defend against RFC 2131 non-compliant DHCP servers which fail to | |
2054 | advertise a lease-time (either mangled, or zero in value) the DHCP | |
2055 | client now adds the server to the reject list ACL and returns to INIT | |
2056 | state to hopefully find an RFC 2131 compliant server (or retry in INIT | |
73c83820 | 2057 | forever). [ISC-Bugs #19660] |
023fbaa0 TM |
2058 | |
2059 | - Parameters configured to evaluate from user defined function calls can | |
2060 | now be correctly written to dhcpd.leases (as on 'on events' or dynamic | |
2061 | host records inserted via OMAPI). [ISC-Bugs #22266] | |
2062 | ||
2063 | - If a 'next-server' parameter is configured in a dynamic host record via | |
2064 | OMAPI as a domain name, the syntax written to disk is now correctly parsed | |
2065 | upon restart. [ISC-Bugs #22266] | |
656b1ece TM |
2066 | |
2067 | - The DHCP server now responds to DHCPLEASEQUERY messages from agents using | |
2068 | IP addresses not covered by a subnet in configuration. Whether or not to | |
2069 | respond to such an agent is still governed by the 'allow leasequery;' | |
2070 | configuration parameter, in the case of an agent not covered by a configured | |
2071 | subnet the root configuration area is examined. Server now also returns | |
2072 | vendor-class-id option, if client sent it. [ISC-Bugs #21094] | |
9a111ee8 | 2073 | |
fc06ee4f SR |
2074 | - Documentation fixes |
2075 | [ISC-Bugs #17959] add text to AIX section describing how to have it send | |
2076 | responses to the all-ones address. | |
2077 | [ISC-Bugs #19615] update the includes in dhcpctl/dhcpctl.3 to be more correct | |
2078 | [ISC-Bugs #20676] update dhcpd.conf.5 to include the RFC numbers for DDNS | |
2079 | ||
1185c766 TM |
2080 | - Relay no longer crashes, when DHCP packet is received over interface without |
2081 | any IPv4 address assigned. Also extended logging message about discarding | |
2082 | packets with invalid hlen with information about relevant interface name. | |
2083 | [ISC-Bugs #22409] | |
2084 | ||
c6455252 TM |
2085 | - Relay now properly logs that packet was received over interface without |
2086 | global IPv6 address [ISC-Bugs #24070] | |
2087 | ||
9a111ee8 TM |
2088 | - Linux Packet Filter interface improvement. sockaddr_pkt structure is used, |
2089 | rather than sockaddr. Packet ethertype is now forced to ETH_P_IP. | |
9369bdc1 TM |
2090 | [ISC-Bugs #18975] |
2091 | ||
fb30f3fc SR |
2092 | - Minor code cleanups - but note port change for #23196 |
2093 | [ISC-Bugs #23470] - Modify when an ignore return macro is defined to | |
2094 | handle unsed error return warnings for more versions of gcc. | |
2095 | [ISC-Bugs #23196] - Modify the reply handling in the server code to | |
2096 | send to a specified port rather than to the source port for the incoming | |
2097 | message. Sending to the source port was test code that should have | |
2098 | been removed. The previous functionality may be restored by defining | |
2099 | REPLY_TO_SOURCE_PORT in the includes/site.h file. We suggest you don't | |
2100 | enable this except for testing purposes. | |
2101 | [ISC-Bugs #22695] - Close a file descriptor in an error path. | |
2102 | [ISC-Bugs #19368] - Tidy up variable types in validate_port. | |
2103 | ||
c616de4f | 2104 | - Code cleanup: remove obsolete PROTO, KandR, INLINE and ANSI_DECL macros |
9a111ee8 | 2105 | [ISC-Bugs #13151] |
c616de4f TM |
2106 | |
2107 | - Compilation problem with gcc4.5 and omshell.c resolved. [ISC-Bugs #23831] | |
a34feb7d | 2108 | |
4f55e11b SR |
2109 | - Client Script fixes |
2110 | [ISC-Bugs #23045] Typos in client/scripts/openbsd | |
2111 | [ISC-Bugs #23565] In the client scripts add a zone id (interface id) if | |
2112 | the domain search address is link local. | |
2113 | [ISC-Bugs #1277] In some of the client scripts add code to handle the | |
2114 | case of the default router information being changed without the address | |
2115 | being changed. | |
2116 | ||
802fdea1 TM |
2117 | - Documentation cleanup |
2118 | [ISC-Bugs #23326] Updated References document, several man page updates | |
2119 | ||
9a111ee8 | 2120 | - Server no longer complains about NULL pointer when configured |
1b601efa TM |
2121 | server-identifier expression fails to evaluate. [ISC-Bugs #24547] |
2122 | ||
199f0b8a SR |
2123 | - Convert ISC_R_INPROGRESS status to ISC_R_SUCCESS when called from other |
2124 | than the dispatch handler. This fixes an issue where omshell, when | |
2125 | run from the same platform as the server, would appear to fail to | |
2126 | connect. This is a companion to #21839. [ISC-Bugs #23592] | |
2127 | ||
786f2e79 SR |
2128 | - Enlarge the buffer size used by the Omshell code and some of the |
2129 | print routines to allow for greater than 60 characters or, when | |
2130 | printing as hex strings, 20 characters. [ISC-Bugs #22743] | |
2131 | ||
7cfeb916 SR |
2132 | - In Solaris 11 switch to using sockets instead of DLPI, thanks |
2133 | to a patch form Oracle. [ISC-Bugs #24634]. | |
2134 | ||
9a111ee8 TM |
2135 | - Strict checks for content of domain-name DHCPv4 option can now be |
2136 | configured during compilation time. Even though RFC2132 does not allow | |
2137 | to store more than one domain in domain-name option, such behavior is | |
d15aa964 TM |
2138 | now enabled by default, but this may change some time in the future. |
2139 | See ACCEPT_LIST_IN_DOMAIN_NAME define in includes/site.h. | |
2140 | [ISC-Bugs #24167] | |
2141 | ||
beaed73f SR |
2142 | - DNS Update fix. A misconfigured server could crash during DNS update |
2143 | processing if the configuration included overlapping pools or | |
2144 | multiple fixed-address entries for a single address. This issue | |
2145 | affected both IPv4 and IPv6. The fix allows a server to detect such | |
2146 | conditions, provides the user with extra information and recommended | |
2147 | steps to fix the problem. If the user enables the appropriate option | |
2148 | in site.h then server will be terminated | |
2149 | [ISC-Bugs #23595] | |
2150 | ||
8bd96ccb SR |
2151 | ! Two packets were found that cause a server to halt. The code |
2152 | has been updated to properly process or reject the packets as | |
2153 | appropriate. Thanks to David Zych at University of Illinois | |
2154 | for reporting this issue. [ISC-Bugs #24960] | |
2155 | One CVE number for each class of packet. | |
2156 | CVE-2011-2748 | |
2157 | CVE-2011-2749 | |
2158 | ||
01a44a77 SR |
2159 | - Fix the code that checks for an existing DDNS transaction to cancel |
2160 | when removing DDNS information, so that we will continue with the | |
2161 | processing if we have a lease even if it doesn't have an outstanding | |
2162 | transaction. [ISC-Bugs #24682] | |
5a38e43f | 2163 | |
01a44a77 SR |
2164 | - Add AM_MAINTAINER_MODE to configure.ac to avoid rebuilding |
2165 | configuration files. [ISC-Bugs #24107] | |
5a38e43f | 2166 | |
01a44a77 SR |
2167 | - Add support for passing DDNS information to a DNS server over |
2168 | an IPv6 address. [ISC-Bugs #22647] | |
524705e5 | 2169 | |
01a44a77 SR |
2170 | - Enhanced patch for 23595 to handle IPv4 fixed addresses more |
2171 | cleanly. [ISC-Bugs #23595] | |
66be0ad1 | 2172 | |
01a44a77 SR |
2173 | ! Add a check for a null pointer before calling the regexec function. |
2174 | Without this check we could, under some circumstances, pass | |
2175 | a null pointer to the regexec function causing it to segfault. | |
2176 | Thanks to a report from BlueCat Networks. | |
2177 | [ISC-Bugs #26704]. | |
2178 | CVE: CVE-2011-4539 | |
57fbc772 | 2179 | |
01a44a77 SR |
2180 | ! Modify the DDNS handling code. In a previous patch we added logging |
2181 | code to the DDNS handling. This code included a bug that caused it | |
2182 | to attempt to dereference a NULL pointer and eventually segfault. | |
2183 | While reviewing the code as we addressed this problem, we determined | |
2184 | that some of the updates to the lease structures would not work as | |
2185 | planned since the structures being updated were in the process of | |
2186 | being freed: these updates were removed. In addition we removed an | |
2187 | incorrect call to the DDNS removal function that could cause a failure | |
2188 | during the removal of DDNS information from the DNS server. | |
2189 | Thanks to Jasper Jongmans for reporting this issue. | |
2190 | [ISC-Bugs #27078] | |
2191 | CVE: CVE-2011-4868 | |
57fbc772 | 2192 | |
01a44a77 SR |
2193 | - Fixed the code that checks if an address the server is planning |
2194 | to hand out is in a reserved range. This would appear as | |
2195 | the server being out of addresses in pools with particular ranges. | |
2196 | [ISC-Bugs #26498] | |
57fbc772 | 2197 | |
01a44a77 SR |
2198 | - In the DDNS code handle error conditions more gracefully and add more |
2199 | logging code. The major change is to handle unexpected cancel events | |
2200 | from the DNS client code. | |
2201 | [ISC-Bugs #26287] | |
57fbc772 | 2202 | |
01a44a77 SR |
2203 | - Tidy up the receive calls and eliminate the need for found_pkt. |
2204 | [ISC-Bugs #25066] | |
9a111ee8 | 2205 | |
01a44a77 SR |
2206 | - Add support for Infiniband over sockets to the server and |
2207 | relay code. We've tested this on Solaris and hope to expand | |
2208 | support for Infiniband in the future. This patch also corrects | |
2209 | some issues we found in the socket code. | |
2210 | [ISC-Bugs #24245] | |
197c917e | 2211 | |
01a44a77 SR |
2212 | - Add a compile time check for the presence of the noreturn attribute |
2213 | and use it for log_fatal if it's available. This will help code | |
2214 | checking programs to eliminate false positives. | |
2215 | [ISC-Bugs #27539] | |
8bd445a1 | 2216 | |
01a44a77 SR |
2217 | - Fixed many compilation problems ("set, but not used" warnings) for |
2218 | gcc 4.6 that may affect Ubuntu 11.10 users. [ISC-Bugs #27588] | |
83d409ae | 2219 | |
01a44a77 SR |
2220 | - Modify the code that determines if an outstanding DDNS request |
2221 | should be cancelled. This patch results in cancelling the | |
2222 | outstanding request less often. It fixes the problem caused | |
2223 | by a client doing a release where the TXT and PTR records | |
2224 | weren't removed from the DNS. | |
2225 | [ISC-BUGS #27858] | |
6aaaf6a4 | 2226 | |
01a44a77 SR |
2227 | - Use offsetof() instead of sizeof() to get the sizes for dhcpv6_relay_packet |
2228 | and dhcpv6_packet in several more places. Thanks to a report from | |
2229 | Bruno Verstuyft and Vincent Demaertelaere of Excentis. | |
2230 | [ISC-Bugs #27941] | |
4e0997c6 | 2231 | |
01a44a77 SR |
2232 | - Remove outdated note in the description of the bootp keyword about the |
2233 | option not satisfying the requirement of failover peers for denying | |
2234 | dynamic bootp clients. | |
2235 | [ISC-bugs #28574] | |
ad59838e | 2236 | |
01a44a77 SR |
2237 | - Multiple items to clean up IPv6 address processing. |
2238 | When processing an IA that we've seen check to see if the | |
2239 | addresses are usable (not in use by somebody else) before | |
2240 | handing it out. | |
2241 | When reading in leases from the file discard expired addresses. | |
2242 | When picking an address for a client include the IA ID in | |
2243 | addition to the client ID to generally pick different addresses | |
2244 | for different IAs. | |
2245 | [ISC-Bugs #23138] [ISC-Bugs #27945] [ISC-Bugs #25586] | |
2246 | [ISC-Bugs #27684] | |
f33dc722 | 2247 | |
01a44a77 SR |
2248 | - Remove unnecessary checks in the lease query code and clean up |
2249 | several compiler issues (some dereferences of NULL and treating | |
2250 | an int as a boolean). | |
2251 | [ISC-Bugs #26203] | |
4dc5a6b1 | 2252 | |
01a44a77 SR |
2253 | - Fix the NA and PD allocation code to handle the case where a client |
2254 | provides a preference and the server doesn't have any addresses or | |
2255 | prefixes available. Previously the server ignored the request with | |
2256 | this patch it replies with a NoAddrsAvail or NoPrefixAvail response. | |
2257 | By default the code performs according to the errata of August 2010 | |
2258 | for RFC 3315 section 17.2.2; to enable the previous style see the | |
2259 | section on RFC3315_PRE_ERRATA_2010_08 in includes/site.h. This option | |
2260 | may be removed in the future. | |
2261 | Thanks to Jiri Popelka at Red Hat for the patch. | |
2262 | [ISC-Bugs #22676] | |
3004baba | 2263 | |
01a44a77 SR |
2264 | - Fix up some issues found by static analysis. |
2265 | A potential memory leak and NULL dereference in omapi. | |
2266 | The use of a boolean test instead of a bitwise test in dst. | |
2267 | [ISC-Bugs #28941] | |
3004baba | 2268 | |
01a44a77 SR |
2269 | - Rotate the lease file when running in v6 mode. |
2270 | Thanks to Christoph Moench-Tegeder at Astaro for the | |
2271 | report and the first version of the patch. | |
2272 | [ISC-Bugs #24887] | |
9d97e644 | 2273 | |
01a44a77 SR |
2274 | - Correct code to calculate timing values in client to compare |
2275 | rebind value to infinity instead of renew value. | |
2276 | Thanks to Chenda Huang from H3C Technologies Co., Limited | |
2277 | for reporting this issue. | |
2278 | [ISC-Bugs #29062] | |
23d39ae2 | 2279 | |
01a44a77 SR |
2280 | - Fix some issues in the code for parsing and printing options. |
2281 | [ISC-Bugs #22625] - properly print options that have several fields | |
2282 | followed by an array of something for example "fIa" | |
2283 | [ISC-Bugs #27289] - properly parse options in declarations that have | |
2284 | several fields followed by an array of something for example "fIa" | |
2285 | [ISC-Bugs #27296] - properly determine if we parsed a 16 or 32 bit | |
2286 | value in evaluate_numeric_expression (extract-int). | |
2287 | [ISC-Bugs #27314] - properly parse a zero length option from | |
2288 | a lease file. Thanks to Marius Tomaschewski from SUSE for the report | |
2289 | and prototype patch for this ticket as well as ticket 27289. | |
23d39ae2 | 2290 | |
01a44a77 SR |
2291 | ! Previously the server code was relaxed to allow packets with zero |
2292 | length client ids to be processed. Under some situations use of | |
2293 | zero length client ids can cause the server to go into an infinite | |
2294 | loop. As such ids are not valid according to RFC 2132 section 9.14 | |
2295 | the server no longer accepts them. Client ids with a length of 1 | |
2296 | are also invalid but the server still accepts them in order to | |
2297 | minimize disruption. The restriction will likely be tightened in | |
2298 | the future to disallow ids with a length of 1. | |
2299 | Thanks to Markus Hietava of Codenomicon CROSS project for the | |
9a111ee8 | 2300 | finding this issue and CERT-FI for vulnerability coordination. |
01a44a77 SR |
2301 | [ISC-Bugs #29851] |
2302 | CVE: CVE-2012-3571 | |
0c9d3a81 | 2303 | |
01a44a77 SR |
2304 | ! When attempting to convert a DUID from a client id option |
2305 | into a hardware address handle unexpected client ids properly. | |
2306 | Thanks to Markus Hietava of Codenomicon CROSS project for the | |
9a111ee8 | 2307 | finding this issue and CERT-FI for vulnerability coordination. |
01a44a77 SR |
2308 | [ISC-Bugs #29852] |
2309 | CVE: CVE-2012-3570 | |
e1a40211 | 2310 | |
01a44a77 SR |
2311 | ! A pair of memory leaks were found and fixed. Thanks to |
2312 | Glen Eustace of Massey University, New Zealand for finding | |
2313 | this issue. | |
2314 | [ISC-Bugs #30024] | |
2315 | CVE: CVE-2012-3954 | |
e7e17397 | 2316 | |
01a44a77 SR |
2317 | - Existing legacy unit-tests have been migrated to Automated Test |
2318 | Framework (ATF). Several new tests have been developed. To enable | |
2319 | unit-tests, please use --with-atf in configure script. A Developer's | |
2320 | Guide has been added. To generate it, please use make devel in | |
2321 | the doc directory. It is currently in early stages of development, | |
2322 | but is expected to grow in the near future. [ISC-Bugs 25901] | |
ef86959b | 2323 | |
01a44a77 SR |
2324 | ! An issue with the use of lease times was found and fixed. Making |
2325 | certain changes to the end time of an IPv6 lease could cause the | |
2326 | server to abort. Thanks to Glen Eustace of Massey University, | |
2327 | New Zealand for finding this issue. | |
2328 | [ISC-Bugs #30281] | |
2329 | CVE: CVE-2012-3955 | |
ef86959b | 2330 | |
01a44a77 SR |
2331 | - Update the memory leakage debug code to work with v6. |
2332 | [ISC-Bugs #30297] | |
919f1407 | 2333 | |
01a44a77 SR |
2334 | - Relax the requirements for deleting an A or AAAA record. |
2335 | Previously the DDNS removal code required both the A or AAAA | |
2336 | record and the TXT record to exist. This requirement could | |
2337 | cause problems if something interrupted the removal leaving | |
2338 | the TXT record alone. This relaxation was codified in RFC 4703. | |
2339 | [ISC-Bugs #30734] | |
8a0d9ca4 | 2340 | |
01a44a77 SR |
2341 | - Modify the failover code to handle incorrect peer names |
2342 | better. Previously the structure holding the name might | |
2343 | have been freed inappropriately in some cases and not | |
2344 | freed in other cases. | |
2345 | [ISC-Bugs #30320] | |
17a8f0e2 | 2346 | |
01a44a77 SR |
2347 | - Add a configure option, enable-secs-byteorder, to deal with |
2348 | clients that do the byte ordering on the secs field incorrectly. | |
2349 | This field should be in network byte order but some clients | |
2350 | get it wrong. When this option is enabled the server will examine | |
2351 | the secs field and if it looks wrong (high byte non zero and low | |
2352 | byte zero) swap the bytes. The default is disabled. This option | |
2353 | is only useful when doing load balancing within failover. | |
2354 | [ISC-Bugs #26108] | |
badc999d | 2355 | |
01a44a77 SR |
2356 | - Fix a set of issues that were discovered via a code inspection |
2357 | tool. Thanks to Jiri Popelka and Tomas Hozza Red Hat for the logs | |
2358 | and patches. | |
2359 | [ISC-Bugs #23833] | |
0d8c3d6e | 2360 | |
9a111ee8 | 2361 | - Parsing unquoted base64 strings improved. Parser now properly handles |
01a44a77 | 2362 | strings that contain reserved names. [ISC-Bugs #23048] |
1e05d095 | 2363 | |
01a44a77 SR |
2364 | - Modify the nak_lease function to make some attempts to find a |
2365 | server-identifier option to use for the NAK. | |
2366 | [ISC-Bugs #25689] | |
1e05d095 | 2367 | |
01a44a77 SR |
2368 | - The client now passes information about the options it requested |
2369 | from the server to the script code via environment variables. | |
2370 | These variables are of the form requested_<option_name>=1 with | |
2371 | the option name being the same as used in the new_* and old_* | |
2372 | variables. | |
2373 | [ISC-Bugs #29068] | |
1943bbf8 | 2374 | |
01a44a77 SR |
2375 | - Add support for a simple check that the server id in a request message |
2376 | to a failover peer matches the server id of the server. This support | |
2377 | is enabled by editing the file includes/site.h and uncommenting the | |
2378 | definition for SERVER_ID_CHECK. The option has several restrictions | |
2379 | and issues - please read the comment in the site.h file before | |
2380 | enabling it. | |
2381 | [ISC-Bugs #31463] | |
8a513c43 | 2382 | |
01a44a77 SR |
2383 | - Tidy up some compiler issues in the debug code. |
2384 | [ISC-Bugs #26460] | |
d122accf | 2385 | |
adb95d23 | 2386 | - Move the dhcpd.conf example file to dhcpd.conf.example to avoid |
01a44a77 SR |
2387 | overwriting the dhcpd.conf file when installing a new version of |
2388 | ISC DHCP. The user will now need to manual copy and edit the | |
2389 | dhcpd.conf file as desired. | |
2390 | [ISC-Bugs #19337] | |
0d8c3d6e | 2391 | |
01a44a77 SR |
2392 | - Check the status value when trying to read from a connection to |
2393 | see if it may have been closed. If it appears closed don't try | |
2394 | to read from it again. This avoids a potential busy-wait like | |
2395 | loop when the peer names are mismatched. | |
2396 | [ISC-Bugs #31231] | |
590298e7 | 2397 | |
01a44a77 SR |
2398 | - Remove an unused variable to keep compilers happy. |
2399 | [ISC-Bugs #31983] | |
2b58b865 | 2400 | |
01a44a77 SR |
2401 | - Modify test makefiles to be more similar to standard makefiles |
2402 | and comment out a currently unused test. | |
2403 | [ISC-Bugs #32089] | |
600ee619 | 2404 | |
01a44a77 SR |
2405 | - Address static analysis warnings. |
2406 | [ISC-Bugs #33510] [ISC-Bugs #33511] | |
a5c7bf77 | 2407 | |
01a44a77 SR |
2408 | - Silence benign static analysis warnings. |
2409 | [ISC-Bugs #33428] | |
a5c7bf77 | 2410 | |
01a44a77 SR |
2411 | - Add check for 64-bit package for atf. |
2412 | [ISC-Bugs #32206] | |
a5c7bf77 | 2413 | |
01a44a77 SR |
2414 | - Use newer auto* tool packages and turn on RFC_3542 support on Mac OS. |
2415 | [ISC-Bugs #26303] | |
a5c7bf77 | 2416 | |
01a44a77 SR |
2417 | - Remove a variable when it isn't being used due to #ifdefs to avoid |
2418 | a compiler warning on Solaris using GCC. | |
2419 | [ISC-Bugs #33032] | |
0585235c | 2420 | |
01a44a77 SR |
2421 | - Add a check for too much whitespace in a config or lease file. |
2422 | Thanks to Paolo Pellegrino for finding the issue and a suggestion | |
2423 | for the patch. | |
2424 | [ISC-Bugs #33351] | |
0585235c | 2425 | |
01a44a77 SR |
2426 | - Fix several problems with using OMAPI to manipulate class and subclass |
2427 | objects. | |
2428 | [ISC-Bugs #27452] | |
f4bc8261 | 2429 | |
01a44a77 SR |
2430 | - Added a sleep call after killing the old client to allow time |
2431 | for the sockets to be cleaned. This should allow the -r option | |
2432 | to work more consistently. | |
2433 | [ISC-Bugs #18175] | |
33692791 | 2434 | |
01a44a77 SR |
2435 | - Missing files for ISC DHCP Developer's Guide are now included in |
2436 | the release tarballs. To generate this documentation, please use | |
2437 | make devel command in doc directory. [ISC-Bugs #32767] | |
928618dd | 2438 | |
01a44a77 SR |
2439 | - Update client script for use with openwrt. |
2440 | [ISC-Bugs #29843] | |
928618dd | 2441 | |
01a44a77 SR |
2442 | - Fix the socket handling for DHCPv6 clients to allow multiple instances |
2443 | of a client on a single machine to work properly. Previously only | |
2444 | one client would receive the packets. Thanks to Jiri Popelka at Red Hat | |
2445 | for the bug report and a potential patch. | |
2446 | [ISC-Bugs #34784] | |
3c941d42 | 2447 | |
01a44a77 SR |
2448 | - Added support for gentle shutdown after signal is received. |
2449 | [ISC-Bugs #32692] [ISC-Bugs 34945] | |
bdd8e747 | 2450 | |
01a44a77 SR |
2451 | - Enhance the DHCPv6 server logging to include the addresses that are assigned |
2452 | to the clients. | |
2453 | [ISC-Bugs #26377] | |
3da71461 | 2454 | |
01a44a77 SR |
2455 | - Fix an operation in the DDNS code to be a bitwise instead of logical or. |
2456 | [ISC-Bugs #35138] | |
fdfebedf | 2457 | |
7aa153b8 | 2458 | |
adbef119 DH |
2459 | Changes since 4.1.0 (new features) |
2460 | ||
d340bc24 DH |
2461 | - Failover port configuration can now be left to defaults (port 647) as |
2462 | described in the -12 revision of the Failover draft (and assigned by | |
4b97eaff | 2463 | IANA). Thanks in part to a patch from David Cantrell at Red Hat. |
adbef119 | 2464 | |
0829d595 DH |
2465 | - If configured, dhclient may now transmit to an anycast MAC address, |
2466 | rather than using a broadcast address. Thanks to a patch from David | |
2467 | Cantrell at Red Hat. | |
2468 | ||
8a3c1e33 PS |
2469 | - Added client support for setting interface MTU and metric, thanks to |
2470 | Roy "UberLord" Marples <roy@marples.name>. | |
2471 | ||
a41d7a25 PS |
2472 | - Added client -D option to specify DUID type to send. |
2473 | ||
9e3eb22a DH |
2474 | - A new failover configuration parameter has been introduced for those |
2475 | environments where DHCP servers can be reasonably guaranteed to be | |
2476 | "down" when the failover TCP socket is severed, "auto-partner-down". | |
2477 | This parameter is not generally safe, and by default is disabled, so | |
2478 | please carefully review the documentation of this parameter in the | |
2479 | dhcpd.conf(5) manpage before determining to use it yourself. | |
2480 | ||
33ea4622 DH |
2481 | - Added a configuration function, 'gethostname()', which calls the system |
2482 | function of the same name and presents the results as a data expression. | |
2483 | This function can be used to incorporate the system level hostname of | |
2484 | the system the DHCP software is operating on in responses or queries (such | |
2485 | as including a failover partner's hostname in a dhcp message or binding | |
2486 | scope, or having a DHCP client send any system hostname in the host-name or | |
2487 | FQDN options by default). | |
2488 | ||
5a671e87 DH |
2489 | - The dhcp-renewal-time and dhcp-rebinding-time options may now be configured |
2490 | for DHCPv4 operation and used independently of the dhcp-lease-time | |
2491 | calculations. Invalid renew and rebinding times (e.g., greater than the | |
2492 | determined lease time) are omitted. | |
2493 | ||
adb95d23 | 2494 | - Processing the DHCP to DNS server transactions in an asynchronous fashion, |
45adf35c | 2495 | the DHCP server or client can now continue with its processing while |
98bf1607 | 2496 | awaiting replies from the DNS server. |
c900c5b2 DH |
2497 | |
2498 | - The 'hardware [ethernet|etc] ...;' parameter in host records has been | |
2499 | extended to attempt to match DHCPv6 clients by the last octets of a | |
2500 | DUID-LL or DUID-LLT provided by the client. | |
2501 | ||
59112e84 SR |
2502 | Changes since 4.1.0 (bug fixes) |
2503 | ||
62f6843d MA |
2504 | - Remove infinite loop in token_print_indent_concat(). |
2505 | ||
59112e84 SR |
2506 | - Validate the argument to the -p option. |
2507 | ||
47e6eb82 DH |
2508 | - The notorious 'option <unknown> ... larger than buffer' log line, |
2509 | which is seen in some malformed DHCP client packets, was modified. | |
2510 | It now logs the universe name, and does not log the length values | |
2511 | (which are bogus corruption read from the packet anyway). It also | |
2512 | carries a hopefully more useful explanation. | |
2513 | ||
159c89d7 EH |
2514 | - Suppress spurious warnings from configure about --datarootdir |
2515 | ||
1aa0fe5e DH |
2516 | - A bug was fixed that caused the server not to answer some valid Solicit |
2517 | and Request packets, if the dynamic range covering any requested addresses | |
2518 | had been deleted from configuration. | |
2519 | ||
cd51403d SR |
2520 | - Update the code to deal with GCC 4.3. This included two sets of changes. |
2521 | The first is to the configuration files to include the use of | |
571c38b0 | 2522 | AC_USE_SYSTEM_EXTENSIONS. The second is to deal with return values that |
cd51403d SR |
2523 | were being ignored. |
2524 | ||
64e1823d DH |
2525 | - The db-time-format option was documented in manpages. |
2526 | ||
26e59ee9 DH |
2527 | - Using reserved leases no longer results in 'lease with binding state |
2528 | free not on its queue' error messages, thanks to a patch from Frode | |
2529 | Nordahl. | |
2530 | ||
70ea9345 PS |
2531 | - Fix a build error in dhcrelay, using older versions of gcc with |
2532 | dhcpv6 disabled. | |
2533 | ||
8d7dca58 | 2534 | - Two uninitialized stack structures are now memset to zero, thanks to a |
4b97eaff | 2535 | patch from David Cantrell at Red Hat. |
819186b7 | 2536 | |
f4534b17 DH |
2537 | - Fixed a cosmetic bug where pretty-printing valid domain-search options would |
2538 | result in an erroneous error log message ('garbage in format string'). | |
2539 | ||
f9453d21 DH |
2540 | - A bug in DLPI packet transmission (Solaris, HP/UX) that caused the server |
2541 | to stop receiving packets is fixed. The same fix also means that the MAC | |
2542 | address will no longer appear 'bogus' on DLPI-based systems. | |
2543 | ||
2544 | - A bug in select handling was discovered where the results of one select() | |
2545 | call were discarded, causing the server to process the next select() call | |
2546 | and use more system calls than required. This has been repaired - the | |
2547 | sockets will be handled after the first return from select(), resulting in | |
2548 | fewer system calls. | |
2549 | ||
a3dcc0b1 DH |
2550 | - The update-conflict-detection feature would leave an FQDN updated without |
2551 | a DHCID (still currently implemented as a TXT RR). This would cause later | |
2552 | expiration or release events to fail to remove the domain name. The feature | |
2553 | now also inserts the client's up to date DHCID record, so records may safely | |
2554 | be removed at expiration or release time. Thanks to a patch submitted by | |
2555 | Christof Chen. | |
2556 | ||
95fd7038 DH |
2557 | - Memory leak in the load_balance_mine() function is fixed. This would |
2558 | leak ~20-30 octets per DHCPDISCOVER packet while failover was in use | |
2559 | and in normal state. | |
2560 | ||
2561 | - Various compilation fixes have been included for the memory related | |
2562 | DEBUG #defines in includes/site.h. | |
2563 | ||
8a3c1e33 PS |
2564 | - Fixed Linux client script 'unary operator expected' errors with DHCPv6. |
2565 | ||
2566 | - Fixed setting hostname in Linux hosts that require hostname argument | |
2567 | to be double-quoted. Also allow server-provided hostname to | |
2568 | override hostnames 'localhost' and '(none)'. | |
2569 | ||
dedde1ba DH |
2570 | - Fixed failover reconnection retry code to continue to retry to reconnect |
2571 | rather than restarting the listener. | |
2572 | ||
a57df74a DH |
2573 | - Compilation on Solaris with USE_SOCKETS defined in includes/site.h has |
2574 | been repaired. Other USE_ overrides should work better. | |
2575 | ||
2576 | - A check for the local flavor of IFNAMSIZ had a broken 'else' condition, | |
2577 | that probably still resulted in the correct behaviour (but wouldn't use | |
2578 | a larger defined value provided by the host OS). | |
2579 | ||
350576c5 DH |
2580 | - Fixed a bug where an OMAPI socket disconnection message would not result |
2581 | in scheduling a failover reconnection, if the link had not negotiated a | |
2582 | failover connect yet (e.g.: connection refused, asynch socket connect() | |
2583 | timeouts). | |
2584 | ||
792156a9 DH |
2585 | - A bug was fixed that caused the 'conflict-done' state to fail to be parsed |
2586 | in failover state records. | |
2587 | ||
8a4e543b DH |
2588 | ! A stack overflow vulnerability was fixed in dhclient that could allow |
2589 | remote attackers to execute arbitrary commands as root on the system, | |
2590 | or simply terminate the client, by providing an over-long subnet-mask | |
1b12d999 | 2591 | option. CERT VU#410676 - CVE-2009-0692 |
8a4e543b | 2592 | |
a1308b64 DH |
2593 | - Fixed a bug where relay agent options would never be returned when |
2594 | processing a DHCPINFORM. | |
2595 | ||
1b12d999 DH |
2596 | - Versions 3.0.x syntax with multiple name->code option definitions is now |
2597 | supported. Note that, similarly to 3.0.x, for by-code lookups only the | |
2598 | last option definition is used. | |
2599 | ||
d453265f PS |
2600 | - Fixed a bug where a time difference of greater than 60 seconds between a |
2601 | failover pair could cause the primary to crash on contact with the | |
2602 | secondary. Thanks to a patch from Steinar Haug. | |
2603 | ||
3e29af1e PS |
2604 | - Don't look for IPv6 interfaces on Linux when running in DHCPv4 mode. |
2605 | Thanks to patches from Matthew Newton and David Cantrell. | |
2606 | ||
b8d45c67 DH |
2607 | - Secondary servers in a failover pair will now perform ddns removals if |
2608 | they had performed ddns updates on a lease that is expiring, or was | |
2609 | released through the primary. As part of the same fix, stale binding scopes | |
2610 | will now be removed if a change in identity of a lease's active client is | |
2611 | detected, rather than simply if a lease is noticed to have expired (which it | |
2612 | may have expired without a failover server noticing in some situations). | |
2613 | ||
583c1c16 DH |
2614 | - A patch supplied by David Cantrell at RedHat was applied that detects |
2615 | invalid calling parameters given to the ns_name_ntop() function. | |
2616 | Specifically, it detects if the caller passed a pointer and size pair | |
2617 | that causes the pointer to integer-wrap past zero. | |
2618 | ||
e4e3a2ab DH |
2619 | ! Fixed a fenceposting bug when a client had two host records configured, |
2620 | one using 'uid' and the other using 'hardware ethernet'. CVE-2009-1892 | |
95f5d38c | 2621 | |
875e99dc SR |
2622 | - Fixed the check in the dhcp_interface_signal_handler routine to verify |
2623 | the existence of the linked signal handler before calling it. | |
2624 | ||
2267da84 DH |
2625 | - Both host and subnet6 configuration groups are now included whether a |
2626 | fixed-address6 (DHCPv6) is in use or not. Host scoped configuration takes | |
2627 | precedence. This fixes two bugs, one where host scoped configuration | |
2628 | would not be included from a non-fixed-address6 host record, and the equal | |
2629 | and opposite bug where subnet6 scoped configuration would not be used when | |
571c38b0 | 2630 | over-riding values were not present in a matching fixed-address6 host |
2267da84 DH |
2631 | configuration. |
2632 | ||
cd3f0b9b DH |
2633 | - ./configure now checks to ensure the intX_t and u_intX_t types are defined, |
2634 | correcting a compilation failure when using Sun's compiler. | |
2635 | ||
0493fdca SR |
2636 | - Modified the handling of a connection to avoid releasing the omapi io |
2637 | object for the connection while it is still in use. One symptom from | |
2638 | this error was a segfault when a failover secondary attempted to connect | |
2639 | to the failover primary if their clocks were not synchronized. | |
2640 | ||
95bba8b6 SR |
2641 | - Clean up to allow compilation with gcc 2.95.4 on FreeBSD. Remove an |
2642 | extra semi-colon from common/dns.c and moved setting a variable to NULL | |
2643 | in server/dhcpv6.c to allow the compiler to decide that the variable | |
9a111ee8 | 2644 | was always properly set. |
95bba8b6 | 2645 | |
adbef119 | 2646 | Changes since 4.1.0b1 |
ebf076fe EH |
2647 | |
2648 | - A missing "else" in dhcrelay.c could have caused an interface not to | |
2649 | be recognized. | |
61d75ea2 | 2650 | |
a4ffedd1 DH |
2651 | Changes since 4.1.0a2 |
2652 | ||
2653 | - A cosmetic bug in DHCPDECLINE processing was fixed which caused all | |
2654 | successful DHCPDECLINEs to be logged as "not found" rather than | |
2655 | "abandoned". | |
2656 | ||
6ff3b26d FD |
2657 | - Added configuration file examples for DHCPv6. |
2658 | ||
1387545f DH |
2659 | - Some failover debugging #defines have been better defined and some |
2660 | high frequency messages moved to a deeper debugging symbol. | |
2661 | ||
2662 | - The CLTT parameter in failover is now only updated by client activity, | |
2663 | and not by failover binding updates (taking on the peer's CLTT). | |
2664 | ||
2665 | - Failover BNDUPD messages are now discarded if they conflict with an | |
d7ac7a27 | 2666 | update that has been transmitted, but not acknowledged. |
1387545f | 2667 | |
399d3dbe DH |
2668 | - A bug cleaning up unknown-xxx temporary option definitions was fixed. |
2669 | ||
fbcee149 DH |
2670 | - Delayed-ack is now a compile-time option, compiled out by default. |
2671 | This feature is simply too experimental for right now, and causes | |
2672 | some problems to some failover installations. We will revisit this | |
2673 | in future releases. | |
2674 | ||
f1672d89 DH |
2675 | - The !inet_pton() call in res_mkupdrec was adjusted to '<= 0' as |
2676 | inet_pton returns either 1, 0, or -1. | |
2677 | ||
236d3a99 DH |
2678 | - A dhclient-script for MacOS X has been included, which enables |
2679 | 'dhclient -6' support. | |
2680 | ||
efa5e6b9 DH |
2681 | - DDNS removal routines were updated so that the DHCID is not removed until |
2682 | the client has been deprived of all A and AAAA records (not only the last | |
2683 | one of either of those). This resolves a bug where dual stack clients | |
2684 | would not be able to regain their names after either expiration event. | |
2685 | ||
7d6180be | 2686 | Changes since 4.1.0a1 |
edcb5c46 EH |
2687 | |
2688 | - Corrected list of failover state values in dhcpd man page. | |
2689 | ||
51e7687f EH |
2690 | - Fixed a bug that caused some request types to be logged incorrectly. |
2691 | ||
20210a7b EH |
2692 | - Clients that sent a parameter request list containing the |
2693 | routers option before the subnet mask option were receiving | |
2694 | only the latter. Fixed. | |
2695 | ||
535485df EH |
2696 | - The server wasn't always sending the FQDN option when it should. |
2697 | ||
8fbb55ff DH |
2698 | - A partner-down failover server no longer emits 'peer holds all free leases' |
2699 | if it is able to newly-allocate one of the peer's leases. | |
2700 | ||
61220a00 EH |
2701 | - Fixed a coredump when adding a class via OMAPI. |
2702 | ||
c40e954c EH |
2703 | - Check whether files are zero length before trying to parse them. |
2704 | ||
63971a83 DH |
2705 | - Ari Edelkind's PARANOIA patch has been included and may be compiled in |
2706 | via two ./configure parameters, --enable-paranoia and | |
2707 | --enable-early-chroot. | |
2708 | ||
66cebfcb DH |
2709 | - ./configure was extended to cover many optional build features, such |
2710 | as failover, server tracing, debugging, and the execute() command. | |
2711 | ||
f8cbf390 DH |
2712 | - There is now a default 1/4 of a second scheduled delay between delayed |
2713 | fsync()'s, it can be configured by the max-ack-delay configuration | |
2714 | parameter. | |
2715 | ||
8269561d DH |
2716 | - A bug was fixed where the length of a hostname was miscalculated, so that |
2717 | hosts were given odd-looking domain names ("foo.bar.ba.example.com"). | |
2718 | ||
b445a411 DH |
2719 | - Shared network selection should be done from the innermost relay |
2720 | valid link-address field, rather than the outermost. | |
2721 | ||
bd72740e FD |
2722 | - Prefix pools are attached to shared network scopes. |
2723 | ||
9322442f FD |
2724 | - Merged IA_XX related structures. |
2725 | ||
8dea7ba7 FD |
2726 | - Add DHCPv6 files in configure. |
2727 | ||
4619c0a2 DH |
2728 | - A memory leak when using omapi has been fixed. |
2729 | ||
9ac4206a DH |
2730 | - DHCPv6 vendor-class options (VSIO) are now only sent when they appear |
2731 | on the DHCPv6 ORO. This resolves a bug where VSIO options were placed | |
2732 | in IA_NA encapsulated options fields. | |
2733 | ||
420d8b3f FD |
2734 | - Integrated client with stateless, temporary address and prefix delegation |
2735 | support. | |
2736 | ||
40ec5f38 DH |
2737 | - A double-dereference in dhclient transmission of DHCPDECLINEs was |
2738 | repaired. | |
2739 | ||
80097764 FD |
2740 | - Fix handling of format code 'Z'. |
2741 | ||
ffbaa880 FD |
2742 | - Support "-1" argument in DHCPv6. |
2743 | ||
7de20a95 EH |
2744 | - Merge DHCPv6-only "dhcrelay6" into general-purpose "dhcrelay" (use |
2745 | "-6" option to select DHCPv6 mode). | |
2746 | ||
d352732e EH |
2747 | - Fix handling of -A and -a flags in dhcrelay; it was failing to expand |
2748 | packet size as needed to add relay agent options. | |
2749 | ||
7d6180be DH |
2750 | - A bug in subnet6 parsing where options contained in subnet6 clauses would |
2751 | not be applied to clients addressed within that network was repaired. | |
2752 | ||
2753 | - When configuring a "subnet {}" or "subnet6 {}" without an explicit | |
2754 | shared-network enclosing it, the DHCP software would synthesize a | |
2755 | shared-network to contain the subnet. However, all configuration | |
2756 | parameters within the subnet more intuitively belong "to any client | |
2757 | on that interface", or rather the synthesized shared-network. So, | |
2758 | when a shared-network is synthesized, it is used to contain the | |
2759 | configuration present inside the subnet {} clause. This means that | |
2760 | the configuration will be valid for all clients on that network, not | |
2761 | just those addressed out of the stated subnet. If you intended the | |
2762 | opposite, the workaround is to explicitly configure an empty | |
2763 | shared-network. | |
2764 | ||
2765 | - A bug was fixed where Information-Request processing was not sourcing | |
2766 | configured option values. | |
2767 | ||
2768 | - A warning was added since the DHCPv6 processing software does not yet | |
2769 | support class statements. | |
2770 | ||
adb95d23 | 2771 | - Compilation warnings on GCC 4.3 relating to bootp source address |
dd484ced DH |
2772 | selection were repaired. |
2773 | ||
ecddae64 DH |
2774 | - The v6 BSD socket method was updated to use a single UDP BSD socket |
2775 | no matter how many interfaces are involved, differentiating the | |
2776 | interfaces the packets were received on by the interface index supplied | |
2777 | by the OS. | |
2778 | ||
2779 | - The relay agent no longer listens to the All DHCP Servers Multicast | |
2780 | address. | |
2781 | ||
2782 | - A bug was fixed in data_string_sprintfa() where va_start was only called | |
2783 | once for two invocations of vsprintf() variants. | |
2784 | ||
d104d45b DH |
2785 | - ERO (RFC 4994) server support. |
2786 | ||
2787 | - Basic and partial DHCPv6 leasequery support. | |
2788 | ||
2789 | - Reliable DHCPv6 release (previous behavior, send release and exit, is | |
2790 | still available with dhclient -6 -1 -r). | |
2791 | ||
01a54c17 | 2792 | Changes since 4.0.0 (new features) |
3c12f746 | 2793 | |
6d7f9584 FD |
2794 | - Added DHCPv6 rapid commit support. |
2795 | ||
4cafb815 | 2796 | - Added explicit parser support for zero-length DHCP options, such as |
6d7f9584 | 2797 | rapid-commit, via format code 'Z'. |
4cafb815 | 2798 | |
022fe95e EH |
2799 | - It's now possible to update the "ends" field of a lease with OMAPI. |
2800 | This is useful if you want not only to release a lease, but also make | |
2801 | it available for reuse right away. Hat tip to Christof Chen. | |
2802 | ||
9a111ee8 | 2803 | - Fixed definition of the iaaddr hash functions to use the correct |
1dcc3612 SK |
2804 | functions when referencing and dereferencing memory. |
2805 | ||
aabfa4de FD |
2806 | - Some definitions not in phase with the IANA registry were updated. |
2807 | ||
0674055a FD |
2808 | - Allocated interface IDs are better controlled ('u' bit set to zero, |
2809 | reserved IDs avoided). | |
2810 | ||
b51c785f FD |
2811 | - Unicast options are taken into account only for RENEWs. |
2812 | ||
900405e9 FD |
2813 | - NoAddrsAvail answers to SOLICITs are always ADVERTISEs even when a SOLICIT |
2814 | carries a rapid-commit option. | |
2815 | ||
96b620e5 FD |
2816 | - Return in place of raise an impossible condition when one tries to release |
2817 | an empty active lease. | |
2818 | ||
be62cf06 FD |
2819 | - Timer granularity is now 1/100s in the DHCPv6 client. |
2820 | ||
01a54c17 EH |
2821 | - The dhclient-script was updated to create a host route for the default |
2822 | gateway if the supplied subnet mask for an IPv4 address was a /32. This | |
2823 | allows the client to work in 'captive' network environments, where the | |
2824 | operator does not want clients to crosstalk directly. | |
2825 | ||
adb95d23 | 2826 | - MINUS tokens should be parsable again. |
01a54c17 EH |
2827 | |
2828 | - Multiple (up to "delayed-ack x;" maximum) DHCPv4 packets are now queued and | |
2829 | released in bursts after single fsync() events when the upper limit is | |
2830 | reached or if the receiving sockets go dry. The practical upshot is | |
2831 | that fsync-coupled server performance is now multiplicitively increased. | |
2832 | The default delayed ack limit is 28. Thanks entirely to a patch from | |
2833 | Christof Chen. | |
2834 | ||
2835 | Changes since 4.0.0 (bug fixes) | |
2836 | ||
2837 | - DHCP now builds on AIX. | |
2838 | ||
2839 | - Exit with warning when DHCPv6-specific statements are used in the | |
2840 | config file but -6 is not specified. | |
2841 | ||
2842 | - Fixed "--version" flag in dhcrelay | |
2843 | ||
2844 | - The 'min-secs' configuration parameter's log message has been updated to | |
2845 | be more helpful. | |
2846 | ||
2847 | - The warning logged when an address range doesn't fit in the subnets | |
2848 | they were declared has been updated to be more helpful and identify the | |
2849 | typo in configuration that created the spanning addresses. | |
2850 | ||
2851 | - A bug in failover pool rebalancing that caused POOLREQ message ping-pongs | |
2852 | was repaired. | |
2853 | ||
2854 | - A flaw in failover pool rebalancing that could cause POOLREQ messages to | |
2855 | be sent outside of the min-balance/max-balance scheduled intervals has | |
2856 | been repaired. | |
2857 | ||
2858 | - A cosmetic bug during potential-conflict recovery that caused the peer's | |
2859 | 'conflict-done' state message to be logged as 'unknown-state' has been | |
2860 | repaired. It is now logged correctly. | |
2861 | ||
49f61135 DH |
2862 | - A bug was fixed where the 'giaddr' may be used to find the client's subnet |
2863 | rather than its own 'ciaddr'. | |
2864 | ||
41d4652f DH |
2865 | - A log message was introduced to clarify the situation where a failover |
2866 | 'address' parameter (the server's local address) did not resolve to an | |
2867 | IPv4 address. | |
2868 | ||
2c9bf1f4 DH |
2869 | - The minimum site code value was set to 224 in 3.1.0 to track RFC3942. This |
2870 | broke a lot of legacy site local configurations. The new code in place will | |
2871 | track site local space minimum option codes and logs a warning to encourage | |
2872 | updates and exploration of site local code migration problems. Option | |
2873 | codes less than 128 in site local spaces remain inaccessible. | |
2874 | ||
2875 | - A possible relay agent option bug was repaired where random server | |
2876 | initialization state may have been used to signal the relay agent | |
2877 | information options sub-option code for the 'END' of the option space. | |
2878 | ||
cff9b78f SK |
2879 | - Fixes to allow code to compile and run on Solaris 9. |
2880 | ||
c4d29896 SK |
2881 | - Fixes to allow code to compile on Mac OS X Leopard (10.5). |
2882 | ||
57fcb8d9 SK |
2883 | - When server is configured with options that it overrides, a warning is |
2884 | issued when the configuration file is read, rather than at the time the | |
2885 | option is overridden. This was important, because the warning was given | |
9a111ee8 | 2886 | every time the option was overridden, which could create a lot of |
57fcb8d9 SK |
2887 | unnecessary logging. |
2888 | ||
219a65eb DH |
2889 | - Fixed a compilation problems on platforms that define a value for FDDI, |
2890 | which conflicts with a dhcp configuration syntax token by the same name. | |
2891 | ||
ffdf3c8c DH |
2892 | - When a failover server suspects it has encountered a peer running a |
2893 | version 3.0.x failover server, a warning that the failover wire protocol | |
2894 | is incompatible is printed. | |
2895 | ||
2896 | - The failover server no longer issues a floating point error if it encounters | |
2897 | a previously undefined option code. | |
2898 | ||
00a002fc MA |
2899 | - Fix startup error messages to report a missing "subnet6 declaration", rather |
2900 | than a missing "subnet declaration", when running as a DHCPv6 server. | |
2901 | ||
9a111ee8 | 2902 | - DHCPv6 client timestamp in DUID was based on the year 1970 rather |
7e9f7a1b FD |
2903 | than the year 2000. |
2904 | ||
e2cfde76 FD |
2905 | - Warn when attempting to use a hardware parameter in DHCPv6. |
2906 | ||
cabdb9b1 FD |
2907 | - DHCPv6 released resources are now marked as released by the client. |
2908 | ||
5d89d60f FD |
2909 | - 'Soft' bindings have no more side-effects. |
2910 | ||
61d75ea2 DH |
2911 | Changes since 4.0.0b3 |
2912 | ||
2913 | - The reverse dns name for PTR updates on IPv6 addresses has been fixed to | |
2914 | use ip6.arpa. rather than default to in-addr.arpa and require user | |
2915 | configuration. | |
76db44f9 | 2916 | |
e32529a5 EH |
2917 | - dhc6_lease_destroy() and dhc6_ia_destroy() now set lease and IA pointers |
2918 | to NULL after freeing, to prevent subsequent accesses to freed memory. | |
2919 | ||
9a111ee8 | 2920 | - The DHCPv6 server would not send the preference option unless the |
76db44f9 SK |
2921 | client requested it, via the ORO. This has been fixed, so the DHCPv6 |
2922 | server will always send the preference value if it is configured. | |
e4a6be15 | 2923 | |
9a111ee8 TM |
2924 | - When addresses were passed as hints to the server in an IA, they were |
2925 | incorrectly handled, sometimes being treated as an error. Now the | |
6f76de58 SK |
2926 | server will treat these as hints and ignore them if it cannot supply |
2927 | a requested address. | |
2928 | ||
703873ab DH |
2929 | - If the client had multiple addresses, and one expired (was not renewed |
2930 | by the server), the client would continue to attempt to renew the same | |
2931 | old address over and over. Now, the client will omit any expired | |
2932 | addresses from future Confirm, Renew, or Rebind messages. | |
2933 | ||
2934 | - dhclient -6 will now select renew/rebind timers based upon the longest | |
2935 | address expiration time rather than the shortest expiration time, in | |
2936 | order to avoid cascading renewals in the event a server elects not to | |
2937 | extend one of multiple IAADDR leases. | |
2938 | ||
b024480e DH |
2939 | - The server now limits clients that request multiple addresses to one |
2940 | address per IA by default, which can be adjusted through the | |
2941 | "limit-addrs-per-ia" configuration option. | |
2942 | ||
c0216cb7 DH |
2943 | - The DHCPv6 client now issues fresh transaction IDs on Renew and Rebind |
2944 | message exchanges, rather than using the most recent ID. | |
2945 | ||
1ac57173 FD |
2946 | - The DHCPv6 server now replies to Information-Request messages. |
2947 | ||
83835822 DH |
2948 | - A bug was fixed in the dhclient-script for BSDs to correctly carry error |
2949 | codes through some conditions. | |
2950 | ||
c54db708 FD |
2951 | - The parsing of some options in the dhclient lease file, in particular |
2952 | the success DHCPv6 status-code, was fixed. | |
2953 | ||
e5d83524 DH |
2954 | - A bug was fixed that caused the DHCPv6 ORO option to be corrupted with |
2955 | seemingly random values. | |
2956 | ||
821f2dda DH |
2957 | - A reference overleak in DHCPv6 shared network processing was repaired. |
2958 | ||
f8b3c6f4 DH |
2959 | - ./configure now autodetects local database locations rather than trying |
2960 | to put dhcpd.leases and dhclient.leases in /usr/local/var/db, which no | |
2961 | one ever has. | |
2962 | ||
9a111ee8 TM |
2963 | - Regression fix for bug where server advertised a IPv6 address in |
2964 | response to a SOLICIT but would not return the address in response | |
b9137d42 SK |
2965 | to a REQUEST. |
2966 | ||
9f1d5a2f DH |
2967 | - A bug was fixed where the DHCPv6 server puts the NoAddrsAvail status |
2968 | code in the IA_NA was fixed. The status code now appears in the root | |
2969 | level. | |
2970 | ||
e4a6be15 DH |
2971 | Changes since 4.0.0b2 |
2972 | ||
65cf86d7 EH |
2973 | - Clarified error message when lease limit exceeded |
2974 | ||
b1d3778c DH |
2975 | - Relative time may now be used as a qualifier for 'allow' and 'deny' access |
2976 | control lists. These directives may be used to assist in re-addressing | |
2977 | address pools without having to constantly reconfigure the server. Please | |
2978 | see 'man dhcpd.conf' for more information on allow/deny 'after time' syntax. | |
2979 | Thanks to a patch from Christof Chen. | |
2980 | ||
bead14ea DH |
2981 | - The server will now include multiple IA_NA's and multiple IAADDRs within |
2982 | them, if advertised by the client. It still only seeks to allocate one | |
2983 | new address. | |
2984 | ||
f765ec36 SK |
2985 | Changes since 4.0.0b1 |
2986 | ||
75135a3f | 2987 | - Use different paths for PID and lease files when running in DHCPv4 |
adb95d23 | 2988 | or DHCPv6 mode, so that servers for both protocols can be run |
75135a3f EH |
2989 | simultaneously on a single interface. |
2990 | ||
5c2d55c7 EH |
2991 | - Fixed a buffer overflow error which could have allowed a denial |
2992 | of service under unusual server configurations | |
2993 | ||
2994 | - Eliminated a spurious error message from the client | |
2995 | ||
9a111ee8 | 2996 | - A number of bugs with the internal handling of lease state on the |
f765ec36 | 2997 | server have been fixed. Some of these could cause server crashes. |
fa9b593d | 2998 | |
edb1283e DH |
2999 | - The peer_wants_leases() changes pulled up from 3.1.0 were corrected, |
3000 | 'never used' leases will no longer consistently shift between servers | |
3001 | on every pool rebalance run. | |
3002 | ||
c71c6399 DH |
3003 | - sendmsg()/recvmsg() control buffers are now declared in such a way to |
3004 | ensure they are correctly aligned on all (esp. 64-bit) architectures. | |
3005 | ||
5279b8f3 DH |
3006 | - The client leasing subsystem was streamlined and corrected to account |
3007 | more closely for changes in client link attachment selection. | |
3008 | ||
ab3a540f | 3009 | Changes since 4.0.0a3 |
763cba6b | 3010 | |
9a111ee8 | 3011 | - The DHCP server no longer requires a "ddns-update-style" statement, |
884a458f SK |
3012 | and now defaults to "none", which means DNS updates are disabled. |
3013 | ||
fa9b593d DH |
3014 | - Log messages when failover peer names mismatch have been improved to |
3015 | point out the problem. | |
3016 | ||
9a111ee8 | 3017 | - Bug where server advertised a IPv6 address in response to a SOLICIT |
1b5053b5 SK |
3018 | but would not return the address in response to a REQUEST. Thanks to |
3019 | Dennis Kou for finding the bug. | |
3020 | ||
c886c298 SK |
3021 | - Fixed an error causing the server to lock up on lease expiration, |
3022 | reported independently by Jothilingam Vasu and Dennis Kou. | |
3023 | ||
eaf7eb17 DH |
3024 | - Fixed a ./configure bug where compile tests were failing due to |
3025 | "-Werror" (unused variable) rather than the actual test failure. Lead | |
3026 | to inconsistent and unworkable auto-configurations. | |
3027 | ||
109e00db DH |
3028 | - Compilation with DLPI and -Werror has been repaired. |
3029 | ||
9a111ee8 | 3030 | - Error in decoding IA_NA option if multiple interfaces are present |
3ad9d48f SK |
3031 | fixed by Marcus Goller. |
3032 | ||
8eab95f2 DH |
3033 | - DHCPv6 server Confirm message processing has been enhanced - it no |
3034 | longer replies only to clients with host {} records, it now replies | |
3035 | as directed in RFC3315 section 18.2.2 - that is, to all clients | |
3036 | regardless of the existence of bindings. | |
3037 | ||
07b9a351 DH |
3038 | - A core dump during expired lease cleanup has been repaired. |
3039 | ||
7285af30 DH |
3040 | - DDNS updates state information are now stored in 'binding scopes' that |
3041 | follow the leases through their lifecycles. This enables DDNS teardowns | |
3042 | on leases that are assigned and expired inbetween a server restart (the | |
3043 | state is recovered from dhcpd.leases). Arbitrary user-specified binding | |
3044 | scopes ('set var = "value";') are not yet supported. | |
3045 | ||
2394b26b DH |
3046 | - Additional compilation problems on HP/UX have been repaired. |
3047 | ||
ab3a540f SK |
3048 | Changes since 4.0.0a2 |
3049 | ||
97050349 SK |
3050 | - Fix for startup where there are no IPv4 addresses on an interface. |
3051 | Thanks to Marcus Goller for reporting the bug. | |
3052 | ||
763cba6b | 3053 | - Fixed file descriptor leak on listen failure. Thanks to Tom Clark. |
e889ded1 | 3054 | |
237f8d3a | 3055 | - Bug in server configuration parser caused server to get stuck on |
9a111ee8 | 3056 | startup for certain bad pool declarations. Thanks to Guillaume |
237f8d3a SK |
3057 | Knispel for the bug report and fix. |
3058 | ||
28868515 SK |
3059 | - Code cleaned to remove warnings reported by "gcc -Wall". |
3060 | ||
d00d373a SK |
3061 | - DHCPv6 is now the default. You can disable DHCPv6 support using the |
3062 | "--disable-dhcpv6" flag when you run the configure script. | |
3063 | ||
8dfd5744 DH |
3064 | - An internal database inconsistency bug was repaired where the server |
3065 | would segfault if a client attempted to renew a lease that had been | |
3066 | loaded from persistent storage. | |
3067 | ||
45d545f0 | 3068 | - 'request' and 'also request' syntaxes have been added to accommodate |
0c20eab3 DH |
3069 | the DHCPv6 client configuration. 'send dhcp6.oro' is no longer |
3070 | necessary. | |
3071 | ||
9a111ee8 TM |
3072 | - Bug fixed where configuration file parsing did not work with |
3073 | zero-length options; this made it impossible to set the | |
f800f4f6 SK |
3074 | rapid-commit option. |
3075 | ||
845e9677 DH |
3076 | - Bogus messages about host records with IPv4 fixed-addresses being of |
3077 | non-128-bits in length were removed. | |
3078 | ||
76c944da SK |
3079 | Changes since 4.0.0a1 |
3080 | ||
71765b58 SK |
3081 | - Bug in octal parsing fixed. Thanks to Bernd Fuhrmann for the report |
3082 | and fix. | |
3083 | ||
847e7000 SK |
3084 | - Autoconf now supplies proper flags for Solaris DHCPv6 builds. |
3085 | ||
bda33169 SK |
3086 | - Fix for parsing error on some IPv6 addresses. |
3087 | ||
9b21e73e SK |
3088 | - Invalid CIDR representation for IPv6 subnets or ranges now checked |
3089 | for when loading configuration. | |
3090 | ||
8da06bb1 DH |
3091 | - Compilation on HP/UX has been repaired. The changes should generally |
3092 | apply to any architecture that supplies SIOCGLIFCONF but does not | |
3093 | use 'struct lifconf' structures to pass values. | |
3094 | ||
dd328225 DH |
3095 | - Two new operators, ~= and ~~, have been integrated to implement |
3096 | boolean matches by regular expression (such as may be used in | |
3097 | class matching statements). Thanks to a patch by Alexandr S. | |
3098 | Agranovsky, which underwent slight modification. | |
3099 | ||
76c944da SK |
3100 | - Fix for icmp packets on 64-bit systems (bug introduced in 4.0). |
3101 | ||
f796f70a DH |
3102 | - A bug was fixed in interface discovery wherein an error identifying |
3103 | a server-configured interface with no IPv4 addresses would SEGV. | |
76c944da | 3104 | |
c11f349d EH |
3105 | - Fixed a bug in which write_lease() might report a failure incorrectly |
3106 | ||
af5fa176 EH |
3107 | - Added support for DHCPv6 Release messages |
3108 | ||
3109 | - Added -x option to dhclient, which triggers dhclient processes | |
3110 | to exit gracefully without releasing leases first | |
3111 | ||
a546f2a7 EH |
3112 | - All binaries (client, server, relay) now change directories |
3113 | to / before going into daemon mode, so as not to hold $CWD open | |
3114 | ||
b55d0d5f EH |
3115 | - Fixed a bug parsing DHCPv6 client-id's in host-identifier statements |
3116 | ||
26be82af DH |
3117 | - Fixed a bug with the 'ddns-updates' boolean server configuration |
3118 | parameter, which caused the server to fail. | |
3119 | ||
98bd7ca0 DH |
3120 | Changes since 4.0.0-20070413 |
3121 | ||
d9b43370 SK |
3122 | - Old (expired) leases are now cleaned. |
3123 | ||
8c1752d2 DH |
3124 | - IPv6 subnets now have support for arbitrary allocation ranges via |
3125 | a new 'range6' configuration directive. | |
3126 | ||
98bd7ca0 DH |
3127 | - An obviated option code hash lookup to find D6O_CLIENTID was removed. |
3128 | ||
a512d11b DH |
3129 | - Corrected some situations where variables might be used without being |
3130 | initialized. | |
3131 | ||
3132 | - Silenced several other compiler warnings. | |
3133 | ||
3134 | - Include the more standard sys/uio.h rather than rely upon other | |
f66f02cc DH |
3135 | header files to include it (fixes a BSD 4.2 compile failure). |
3136 | ||
3137 | - Duplicate dhclient-script updates for DHCPv6 to all provided scripts. | |
a512d11b | 3138 | |
4ba58919 DH |
3139 | - DHCPv4 I/O methods that failed to sense hardware address were corrected. |
3140 | ||
3141 | - DHCPv4 is now the default (as documented) rather than DHCPv6. The default | |
3142 | was set to DHCPv6 to facilitate ease early development, and forgotten. | |
3143 | ||
3144 | - Corrected a segmentation violation in DHCPv4 socket processing. | |
3145 | ||
8ea19a71 | 3146 | - dhclient will now fork() into the background once it binds to an |
45d545f0 | 3147 | IPv6 address, or immediately if the -n flag is supplied. |
8ea19a71 DH |
3148 | |
3149 | - -q is now the default behaviour on dhclient, with -d or -v enabling | |
3150 | non-quiet (stderr logging) mode. | |
3151 | ||
2cf8d0bd DH |
3152 | - Fix documentation of the domain-search atom (quoted, with commas). |
3153 | ||
3154 | - Document DHCPv6 options presently in the default table. | |
3155 | ||
fe5b0fdd DH |
3156 | - Replaced ./configure shellscripting with GNU Autoconf. |
3157 | ||
98bd7ca0 DH |
3158 | Changes since 3.1.0 (NEW FEATURES) |
3159 | ||
3160 | - DHCPv6 Client and Server protocol support. Use '-6' to run the daemons | |
3161 | as v6-only. Use '-4' to run the daemons as v4-only (default. There is | |
3162 | no support currently for both. | |
3163 | ||
3164 | - Server support for multiple IA_NA options, containing at most one | |
3165 | IAADDR option. | |
3166 | ||
3167 | - Client support for one IA_NA option, containing any number of IAADDR | |
3168 | options. | |
3169 | ||
3170 | - Server support for the DHCPv6 Information-request message. | |
3171 | ||
3172 | - Inappropriate unicast DHCPv6 messages sent to the server are now | |
3173 | discarded, and this has rearchitected the IO system slightly. | |
3174 | ||
3175 | - The DHCPv6 server DUID defaults to type 1, is persistently stored in | |
3176 | the leases database, and can be over-ridden (either completely, or by | |
3177 | specifying type 1 or type 2). | |
3178 | ||
3179 | - The server only uses Rapid-Commit if it has been configured with the | |
3180 | Rapid-Commit option and the client requests it. | |
3181 | ||
3182 | - DDNS support. We now update AAAA records in the same place we would | |
3183 | update A records, if we have an IPv6 address. We also generate IP6.ARPA | |
3184 | style names for PTR records if we're dealing with an IPv6 address. Both | |
3185 | A and AAAA updates are done using the same 'fqdn.' virtual option space | |
3186 | (although the DHCPv4 FQDN and DHCPv6 FQDN options are formatted | |
3187 | differently, they both use the same code here). | |
3188 | ||
3189 | - The Linux dhclient-script attempts to set and remove assigned addresses, | |
3190 | and to configure /etc/resolv.conf from nameserver and domain name | |
3191 | configurations. It can be extended to configure other parameters. | |
3192 | ||
3193 | - Initial DHCPv6 lease support. | |
3194 | ||
3195 | - The IO system now tracks all local IP addresses, so that the DHCP | |
3196 | applications (particularly the dhcrelay) can discern between what frames | |
3197 | were transmitted to it, and what frames are being carried through it which | |
3198 | it should not intercept. | |
3199 | ||
1418fd11 DH |
3200 | Changes since 3.1.0 (Maintenance) |
3201 | ||
3202 | - A bug was repaired where MAC Address Affinity for virgin leases always | |
3203 | mapped to the primary. Virgin leases now have an interleaved preference | |
3204 | between primary and secondary. | |
3205 | ||
3206 | - A bug was repaired where MAC Address Affinity for clients with no client | |
3207 | identifier was sometimes mishashed to the peer. Load balancing during | |
3208 | runtime and pool rebalancing were opposing. | |
3209 | ||
aa3e348e DH |
3210 | - An assertion in lease counting relating to reserved leases was repaired. |
3211 | ||
e9c59645 DH |
3212 | - The subnet-mask option inclusion now conforms with RFC2132 section 3.3; |
3213 | it will only appear prior to the routers option if it is present on the | |
3214 | Parameter-Request-List. The subnet-mask option will also only be | |
3215 | included by default (if it is not on the PRL) in response to DISCOVER | |
3216 | or REQUEST messages. | |
3217 | ||
3218 | - The FQDN option is only supplied if the client supplied an FQDN option or | |
3219 | if the FQDN option was explicitly requested on the PRL. | |
3220 | ||
c104546d DH |
3221 | - Dynamic BOOTP leases are now load balanced in failover. |
3222 | ||
b9d0cc05 DH |
3223 | Changes since 3.1.0rc1 |
3224 | ||
adb95d23 | 3225 | - The parse warning that 'deny dynamic bootp;' must be configured for |
b9d0cc05 DH |
3226 | failover protected subnets was removed. |
3227 | ||
a512cc3a DH |
3228 | Changes since 3.1.0b2 |
3229 | ||
3230 | - Failover rebalance events no longer play ping pong with round errors | |
3231 | (moving leases between free and back to backup where there are an | |
3232 | odd number of leases). | |
3233 | ||
3234 | - The 'pool' log line has been split into two messages, one before the | |
3235 | rebalance run, and one after. | |
3236 | ||
3237 | - Any queued BNDACKs are transmitted before transmitting new BNDUPDs. | |
3238 | This enforces the correct sequence of events for the remote server | |
3239 | processing these messages. | |
3240 | ||
fe5b0fdd | 3241 | Changes since 3.1.0b1 |
27837f95 | 3242 | |
74dc3e0b EH |
3243 | - Fixed a bug that caused OMAPI clients to freeze when opening lease |
3244 | objects. | |
3245 | ||
1ba87b37 EH |
3246 | - A new server config option "fqdn-reply" specifies whether the server |
3247 | should send out option 81 (FQDN). Defaults to "on". If set to "off", | |
3248 | the FQDN option is not sent, even if the client requested it. This is | |
3249 | needed because some clients misbehave otherwise. Thanks to Christof Chen | |
3250 | at Allianz. | |
3251 | ||
a58da042 EH |
3252 | - Allow trace output files (-tf option) to be overwritten, rather than |
3253 | crashing dhcpd if the file already exists | |
3254 | ||
61252edf EH |
3255 | - A bug was fixed that caused dhcpd to segfault if a pool was declared |
3256 | outside the scope of a subnet in dhcpd.conf. | |
3257 | ||
27837f95 DH |
3258 | - Some uninitialized values were repaired in dhcpleasequery.c that |
3259 | caused the server to abort. | |
3260 | ||
4d2eaafb DH |
3261 | - A new server config option, 'do-reverse-updates', has been added |
3262 | which causes the server to abstain from performing updates on PTR | |
3263 | records. Thanks to a patch from Christof Chen at Allianz. | |
3264 | ||
06211b40 DH |
3265 | - A bug was repaired in subencapsulation support, where spaces separated |
3266 | by empty spaces would not get included. | |
3267 | ||
d6614ea2 DH |
3268 | - A bug in dhclient was repaired which caused it to send parameter request |
3269 | lists of 55 bytes in length no matter how long the declared PRL was. | |
3270 | ||
132d38f2 DH |
3271 | - 'dhcp.c(3953): non-null pointer' has been repaired. This fixes a flaw |
3272 | wherein the DHCPv4 server may ignore a configured server-identifier. | |
3273 | ||
fc3b9c90 DH |
3274 | - A flaw in failover startup sequences was repaired that sometimes left |
3275 | the primary DHCP server's pool rebalance schedules unscheduled. | |
3276 | ||
c9feb859 DH |
3277 | - Corrected a flaw that broke encapsulated spaces included due to presence |
3278 | on the parameter request list. | |
3279 | ||
c57db45c SK |
3280 | Changes since 3.1.0a3 |
3281 | ||
3282 | - Some spelling fixes. | |
98311e4b | 3283 | |
bd2bc2fa DH |
3284 | Changes since 3.1.0a2 |
3285 | ||
3286 | - A bug was fixed where attempting to permit leasequeries results in a | |
3287 | fatal internal error, "Unable to find server option 49". | |
3288 | ||
85edef5c DH |
3289 | - A bug was fixed in dhclient rendering the textual output form of the |
3290 | domain-search option syntax. | |
3291 | ||
bdddcb7d DH |
3292 | Changes since 3.1.0a1 |
3293 | ||
3294 | - A bug in the FQDN universe that added FQDN codes to the NWIP universe's | |
3295 | hash table was repaired. | |
3296 | ||
616d67cb DH |
3297 | - The servers now try harder to transmit pending binding updates when |
3298 | entering normal state. | |
3299 | ||
3300 | - UPDREQ/UPDREQALL handling was optimized - it no longer dequeues and | |
3301 | requeues all pending updates. This should reduce the number of spurious | |
66c8f734 DH |
3302 | 'xid mismatch' log messages. |
3303 | ||
3304 | - An option definition referencing leak was fixed, which resulted in early | |
3305 | termination of dhclient upon the renewal event. | |
616d67cb | 3306 | |
6708d944 DH |
3307 | - Some default hash table sizes were tweaked, some upwards, some downwards. |
3308 | 3.1.0a1's tables resulted in a reduction in default server memory use. | |
3309 | The new selected values provide more of a zero sum (increasing the size | |
3310 | of tables likely to be populated, decreasing the size of tables unlikely). | |
3311 | ||
45d545f0 | 3312 | - Lease structures appear in three separate hashes: by IP address, by UID, |
6708d944 DH |
3313 | and by hardware address. One type of table was used for all three, and |
3314 | improvements to IP address hashing were applied to all three (so UID and | |
3315 | hardware addresses were treated like 4-byte integers). There are now two | |
3316 | types of tables, and the uid/hw hashes use functions more appropriate | |
3317 | to their needs. | |
3318 | ||
3319 | - The max-lease-misbalance percentage no longer causes scheduled rebalance | |
3320 | runs to be skipped: it still governs the schedule, but every scheduled | |
3321 | run will attempt balance. | |
3322 | ||
a7ee93fe DH |
3323 | - A segfault bug in recursive encapsulation support has been corrected. |
3324 | ||
98311e4b DH |
3325 | Changes since 3.0 (New Features) |
3326 | ||
3327 | - A workaround for certain STSN servers that send a mangled domain-name | |
3328 | option was introduced for dhclient. The client will now accept corrupted | |
3329 | server responses, if they contain a valid DHCP_MESSAGE_TYPE (OFFER, ACK, | |
3330 | or NAK). The server will continue to not accept corrupt client packets. | |
3331 | ||
98bd7ca0 | 3332 | - Support for 'reserved' (pseudo-static) and BOOTP leases via failover |
a55ccdd0 | 3333 | was introduced. |
98311e4b DH |
3334 | |
3335 | - Support for adding, removing, and managing class and subclass statements | |
3336 | via OMAPI. | |
3337 | ||
a55ccdd0 DH |
3338 | - The failover implementation was updated to comply with revision 12 of |
3339 | the protocol draft. | |
3340 | ||
98311e4b DH |
3341 | - 'make install' now creates the initial zero-length dhcpd.leases file if |
3342 | one does not already exist on the system. | |
3343 | ||
b43c87ad | 3344 | - RFC3942 compliance, site-local option spaces start at 224 now, not 128. |
b43c87ad | 3345 | |
0b17f049 DH |
3346 | - The Load Balance Algorithm was misimplemented. The current implementation |
3347 | matches RFC 3074. | |
3348 | ||
2727c1cf DH |
3349 | - lcase() and ucase() configuration expressions have been added which adjust |
3350 | their arguments from upper to lower and lower to upper cases respectively. | |
2714a8ef | 3351 | Thanks to a patch from Albert Herranz. |
2727c1cf | 3352 | |
febbd402 DH |
3353 | - The dhclient 'reject ...;' statement, which rejects leases given by named |
3354 | server-identifiers, now permits address ranges to be specified in CIDR | |
7d7073e7 | 3355 | notation. Thanks to a patch from David Boyce. |
febbd402 | 3356 | |
ee912528 DH |
3357 | - The subnet-mask option is now supplied by default, but at lowest |
3358 | priority. This helps a small minority of clients that provide parameter | |
3359 | request lists, but do not list the subnet-mask option because they were | |
3360 | designed to interoperate with a server that behaves in this manner. | |
3361 | ||
3362 | - The FQDN option is similarly supplied even if it does not appear on the | |
3363 | parameter request list, but not to the exclusion of options that do | |
3364 | appear at the parameter request list. Up until now it had ultimate | |
3365 | priority over the client's parameter request list. | |
3366 | ||
f7fdb216 | 3367 | - Varying option space code and length bit widths (8/16/32) are now |
51202707 | 3368 | supported. This is a milestone in achieving RFC 3925 "VIVSO" and |
f7fdb216 DH |
3369 | DHCPv6 support. |
3370 | ||
5e864416 DH |
3371 | - A new common (server or client) option, 'db-time-format local;', has |
3372 | been added which prints the local time in /var/db/dhcpd.leases rather | |
3373 | than UTC. Thanks to a patch from Ken Lalonde. | |
3374 | ||
b500bd4c DH |
3375 | - Some patches to improve DHCP Server startup speed from Andrew Matheson |
3376 | have been incorporated. | |
3377 | ||
2426234f DH |
3378 | - Failover pairs now implement 'MAC Affinity' on leases moving from the |
3379 | active to free states. Leases that belonged to the failover secondary | |
3380 | are moved to BACKUP state rather than FREE upon exiting EXPIRED state. | |
3381 | If lease rebalancing must move leases, it tries first to move leases | |
3382 | that belong to the peer in need. | |
3383 | ||
3384 | - The server no longer sends POOLREQ messages unless the pool is severely | |
3385 | misbalanced in the peer's favor (see 'man dhcpd.conf' for more details). | |
3386 | ||
3387 | - Pool rebalance events no longer happen upon successfully allocating a | |
3388 | lease. Instead, they happen on a schedule. See 'man dhcpd.conf' for the | |
3389 | min-balance and max-balance statements for more information. | |
3390 | ||
334bf491 DH |
3391 | - The DHCP Relay Agent Information Option / Link Selection Sub-Option |
3392 | is now supported. (See RFC3527 for details). | |
3393 | ||
3004bebf DH |
3394 | - A new DDNS related server option, update-conflict-detection, has been |
3395 | added. If this option is enabled, dhcpd will perform normal DHCID | |
3396 | conflict resolution (the default). If this option is disabled, it will | |
3397 | instead trust the assigned name implicitly (removing any other bindings | |
3398 | on that name). This option has not been made available in dhclient. | |
3399 | ||
567e8561 DH |
3400 | - In those cases where the DHCP software manufactures an IP header (to |
3401 | transmit via bpf, lpf, etc), the IP TTL the software selects has been | |
3402 | increased from 16 to 128. This is intended to match Microsoft Windows | |
3403 | DHCP Client behaviour, to increase compatibility. | |
3404 | ||
a396d25f DH |
3405 | - 'ignore client-updates;' now has behaviour that is different from |
3406 | 'deny client-updates;'. The client's request is not truly ignored, | |
3407 | rather it is encouraged. Should this value be configured, the server | |
3408 | updates DNS as though client-updates were set to 'deny'. That is, it | |
3409 | enters into DNS whatever it is configured to do already, provided it is | |
3410 | configured to. Then it sends a response to the client that lets the | |
3411 | client believe it is performing client updates (which it will), probably | |
3412 | for a different name. In essence, this lets the client do as it will, | |
3413 | ignoring this aspect of their request. | |
3414 | ||
dba5803b DH |
3415 | - Support for compressed 'domain name list' style DHCP option contents, and |
3416 | in particular the domain search option (#119) was added. | |
3417 | ||
41e45067 | 3418 | - The DHCP LEASEQUERY protocol as defined in RFC4388 is now implemented. |
6d103865 SK |
3419 | LEASEQUERY lets you query the DHCP server for information about a lease, |
3420 | using either an IP address, MAC address, or client identifier. Thanks | |
3421 | to a patch from Justin Haddad. | |
3422 | ||
41e45067 DH |
3423 | - DHCPD is now RFC2131 section 4.1 compliant (broadcast to all-ones ip and |
3424 | ethernet mac address) on the SCO platform specifically without any strange | |
3425 | ifconfig hacks. Many thanks go to the Kroger Co. for donating the | |
3426 | hardware and funding the development. | |
6d103865 | 3427 | |
b543fea9 DH |
3428 | - A new common configuration executable statement, execute(), has been |
3429 | added. This permits dhcpd or dhclient to execute a named external | |
3430 | program with command line arguments specified from other configuration | |
3431 | language. Thanks to a patch written by Mattias Ronnblom, gotten to us | |
3432 | via Robin Breathe. | |
3433 | ||
b22de500 DH |
3434 | - A new dhcp server option 'adaptive-lease-time-threshold' has been added |
3435 | which causes the server to substantially reduce lease-times if there are | |
3436 | few (configured percentage) remaining leases. Thanks to a patch submitted | |
3437 | from Christof Chen. | |
3438 | ||
96bbe8c5 SK |
3439 | - Encapsulated option spaces within encapsulated option spaces is now |
3440 | formally supported. | |
3441 | ||
b8221d95 DH |
3442 | Changes since 3.0.6rc1 |
3443 | ||
3444 | - supersede_lease() now requeues leases in their respective hardware | |
3445 | address hash bucket. This mirrors client identifier behaviour. | |
3446 | ||
c1e6c832 DH |
3447 | Changes since 3.0.5 |
3448 | ||
f546c28b DH |
3449 | - Assorted fixes for broken network devices: Packet length is now |
3450 | determined from the IP header length field to finally calculate the | |
3451 | UDP payload length, because some NIC drivers return more data than | |
5a22eb63 | 3452 | they actually received. |
f546c28b DH |
3453 | |
3454 | - UDP packets are now stored in aligned data structures. | |
3455 | ||
c1e6c832 DH |
3456 | - A logic error in omapi interface code was repaired that might result in |
3457 | incorrectly indicating 'up' state when any flags were set, rather than | |
23e10d37 DH |
3458 | specifically the INTERFACE_REQUESTED flag. Thanks to a patch from |
3459 | Jochen Voss which got to us via Andrew Pollock at Debian. | |
c1e6c832 | 3460 | |
75ab3070 DH |
3461 | - A reference leak on binding scopes set by ddns updates was repaired. |
3462 | ||
d69fb6a8 | 3463 | - A memory leak in the minires_nsendsigned() function call was repaired. |
23e10d37 | 3464 | Effectively, this leaked ~176 bytes per DDNS update. |
d69fb6a8 | 3465 | |
02428754 DH |
3466 | - In the case where an "L2" DHCP Relay Agent (one that does not set giaddr) |
3467 | was directly attached to the same broadcast domain as the DHCP server, | |
3468 | the RFC3046 relay agent information option was not being returned to the | |
3469 | relay in the server's replies. This was fixed; the dhcp server no longer | |
3470 | requires the giaddr to reply with relay agent information. Note that | |
3471 | this also improves compatibility with L2 devices that "intercept" DHCP | |
3472 | packets and expect relay agent information even in unicast (renewal) | |
23e10d37 DH |
3473 | replies. Thanks to a patch from Pekka Silvonen. |
3474 | ||
3475 | - A bug was fixed where the BOOTP header 'sname' field had a value, the | |
3476 | copy written to persistent storage was actually the contents of the | |
3477 | 'file' field. | |
02428754 | 3478 | |
ecde99a3 DH |
3479 | - A bug was fixed where the nwip virtual option space was referencing |
3480 | the fqdn option's virtual option space's option cache. | |
3481 | ||
67674ffb DH |
3482 | - Timestamp parsing errors that indicated missing "minutes" fields rather |
3483 | than the actually missing "seconds" fields have been repaired thanks to | |
3484 | a patch from Kevin Steves. | |
3485 | ||
830ebc4c DH |
3486 | - A grammar error in the dhclient.8 manpage was repaired thanks to a patch |
3487 | from Chris Wagner. | |
3488 | ||
c759db75 DH |
3489 | - Several spelling typos were repaired, and some cross-references to other |
3490 | relevant documents were included in the manpages, thanks to a patch | |
3491 | by Andrew Pollock which got to us via Tomas Pospisek. | |
3492 | ||
9aa3f3a5 DH |
3493 | - Some bugs were fixed in the 'emergency relay agent options hologram' |
3494 | which is used to retain relay agent option contents from when the | |
3495 | client was in INIT or REBIND states. This should solve problems where | |
3496 | relay agent options were not echoed from the server, even when giaddr | |
3497 | was set. | |
3498 | ||
3d0c598a DH |
3499 | - dhclient now closes its descriptor to dhclient.leases prior to executing |
3500 | dhclient-script. Thanks to a patch from Tomas Pospisek. | |
3501 | ||
d5b6835f DH |
3502 | - The server's "by client-id" and "by hardware address" hash table lists |
3503 | are now sorted according to the preference to re-allocate that lease to | |
3504 | returning clients. This should eliminate pool starvation problems | |
3505 | arising when "INIT" clients were given new leases rather than presently | |
3506 | active ones. | |
3507 | ||
02428754 | 3508 | Changes since 3.0.5rc1 |
0a73b7b6 | 3509 | |
901306d5 | 3510 | - A bug was repaired in fixes to the dhclient, which sought to run the |
0a73b7b6 SK |
3511 | dhclient-script with the 'EXPIRE' state should it receive a NAK in |
3512 | response to a REQUEST. The client now iterates the PREINIT state | |
3513 | after the EXPIRE state, so that interfaces that might be configured | |
3514 | 'down' can be brought back 'up' and initialized. | |
3515 | ||
87a08ccc DH |
3516 | - DHCPINFORM handling for clients that properly set ciaddr and come to the |
3517 | server via a relay aget has been repaired. | |
3518 | ||
6da113fb DH |
3519 | Changes since 3.0.4 |
3520 | ||
3521 | - A warning that host statements declared within subnet or shared-network | |
3522 | scopes are actually global has been added. | |
3523 | ||
3524 | - The default minimum lease time (if min-lease-time was not specified) | |
3525 | was raised from 0 to 300. 0 is not thought to be sensible, and is | |
3526 | known to be damaging. | |
3527 | ||
3528 | - Added additional fatal error sanity checks surrounding lease binding | |
3529 | state count calculations (free/active counts used for failover pool | |
3530 | balancing). | |
3531 | ||
dcc557db DH |
3532 | - Some time value size fixes in 3.0.4 brought on from FreeBSD /usr/ports were |
3533 | misapplied to server values rather than client values. The server no longer | |
3534 | advertises 8-byte lease-time options when on 64-bit platforms. | |
3535 | ||
1b2ab55f DH |
3536 | - A bug where leases not in ACTIVE state would get billed to billed classes |
3537 | (classes with lease limitations) was fixed. Non-active leases OFFERed | |
3538 | to clients are no longer billed (but billing is checked before offering). | |
3539 | ||
e48891e8 DH |
3540 | - The dhcpd.conf.5 manpage was updated in regard to the ddns-domainname |
3541 | configuration option - the default configuration and results should be | |
3542 | more clear now. | |
3543 | ||
6cbc6629 DH |
3544 | - If the dhclient were to receive a DHCPNAK while it was in the RENEW |
3545 | state (and consequently, had an active, 'bound' address and related | |
3546 | configuration options), it would fail to 'tear down' this information | |
3547 | before proceeding into INIT state. dhclient now iterates the dhclient- | |
3548 | script with the 'EXPIRE' action to cause these teardowns prior to entering | |
1d3bfb17 | 3549 | INIT state. Thanks to a patch from Chris Zimmerman. |
6cbc6629 | 3550 | |
c5fec5fa DH |
3551 | - The omapi.1 manpage had some formatting errors repaired thanks to a patch |
3552 | from Yoshihiko Sarumaru. | |
3553 | ||
33e1cb2b DH |
3554 | - A few lines of code that were failover-specific were moved within |
3555 | #if defined() clauses so that compilation without failover could be | |
3556 | made possible. | |
3557 | ||
2bddf829 DH |
3558 | - The log message emitted when the 'leased-address' value was not available |
3559 | in dhcpd.conf "executable statements" has been updated to be more helpful. | |
3560 | Manpage information for this value has also been updated. | |
3561 | ||
87578987 DH |
3562 | - Abandoned or dissociated (err condition) leases now remove any related |
3563 | dynamic dns bindings. Thanks to a patch from Patrick Schoo. | |
3564 | ||
e77c575f DH |
3565 | - Attempting to write a new lease file to replace a corrupt (due to |
3566 | encountering non-retryable errors during writing) lease file should | |
3567 | no longer result in an infinite recursion. | |
3568 | ||
2178df03 DH |
3569 | - Host declaration hardware addresses and client identifiers may only be |
3570 | configured once. dhcpd will now fail to load config files that specify | |
3571 | multiple identifiers (previous versions would silently over-ride the | |
3572 | value with the later configured value). | |
3573 | ||
d5341d9b SK |
3574 | - Several option codes that have been allocated since our last release |
3575 | have been named and documented. | |
3576 | ||
3577 | - Option names of the form "unknown-123" have been removed from the in- | |
3578 | memory hash tables. In order to support options of these names that | |
3579 | may appear in dhclient.leases or similar in previous versions, the | |
3580 | parser will now find the new option code definition, or mock up a | |
3581 | generic option code definition. This should result in a smooth | |
3582 | transition from one name to the other, as the new name is used to | |
3583 | write new output. | |
3584 | ||
6da113fb DH |
3585 | Changes since 3.0.4rc1 |
3586 | ||
3587 | - The dhcp-options.5 manpage was updated to correct indentation errors | |
3588 | thanks to a patch from Jean Delvare. | |
3589 | ||
3590 | Changes since 3.0.4b3 | |
3591 | ||
3592 | - Some manual pages were clarified pursuant to discussion on the dhcp-server | |
3593 | mailing list. | |
3594 | ||
88cd8aca DH |
3595 | Changes since 3.0.4b2 |
3596 | ||
45d545f0 | 3597 | - Null-termination sensing for certain clients that unfortunately require |
88cd8aca DH |
3598 | it in DHCPINFORM processing was repaired. |
3599 | ||
3600 | - The host-name option and a few others were moved from "X" format to "t" | |
3601 | format to be compatible with new NULL handling functions. | |
3602 | ||
3603 | - DHCPINFORM processing is a little more careful about return addressing | |
3604 | its responses, or if responding via a relay. The INFORM related | |
3605 | messages also log the 'effective client ip address' rather than the | |
3606 | client's supplied ciaddr (since some clients produce null ciaddrs). | |
3607 | ||
3608 | - The server was inappropriately sending leases to the RESET state in the | |
3609 | event that multiple active leases were found to match a singly-identified | |
3610 | client. This was changed to RELEASED (by accepting a different, ACTIVE | |
3611 | binding, the client is implicitly releasing its lease). This repairs a | |
3612 | bug wherein secondary servers in failover pairs detecting this condition | |
3613 | move leases to RESET, and primaries refuse to accept that state | |
3614 | transition (properly). | |
3615 | ||
3616 | - The memset-after-dmalloc() changes made in 3.0.4b1 have been backed out. | |
3617 | ||
3618 | Changes since 3.0.4b1 | |
3619 | ||
3620 | - Command line parsing in omshell was repaired - it no longer closes | |
3621 | STDIN after reading one line. | |
3622 | ||
3623 | - The resolver library no longer closes the /etc/resolv.conf file | |
3624 | descriptor it opened twice. | |
3625 | ||
3626 | - Changes to trailing NULL removal in 't' option-atoms has been rethought, | |
3627 | it now includes 'd' (domain name) types, and tries hard not to rewind an | |
3628 | option beyond the start of the text field it is un-terminating. | |
3629 | ||
3630 | Changes since 3.0.3 | |
3631 | ||
3632 | - A DDNS update handling function was misusing the DNS error codes, rather | |
3633 | than the internal generic result enumeration. The result is a confusing | |
3634 | syslog line, logging the wrong condition. | |
3635 | ||
3636 | - The DHCP Server was not checking pool balance in the case where it brought | |
3637 | a non-ACTIVE lease out of storage for a client that was returning to use | |
3638 | a lease it once had long ago, and had since expired. | |
3639 | ||
3640 | - Failover peers no longer bother to look for free leases to allocate when | |
3641 | they already found the client's ACTIVE lease. DISCOVERs are load balanced | |
98bd7ca0 | 3642 | whether freely-allocated or not, unless the server doubts the peer has |
88cd8aca DH |
3643 | leases to allocate. |
3644 | ||
3645 | - Fixed a bug in dhcrelay agent addition code that suppressed trailing | |
45d545f0 | 3646 | PAD options - it was suppressing only one trailing PAD option, rather |
88cd8aca DH |
3647 | than the entire block of them. |
3648 | ||
3a16098f DH |
3649 | ! Fixed some unlikely overlapping-region memcpy() bugs in dhcrelay agent |
3650 | option addition and stripping code. Added a few sanity checks. Although | |
3651 | highly improbable, due to requiring the reception of a DHCP datagram well | |
3652 | in excess of all known to be used physical MTU limitations, it is possible | |
3653 | this may have been used in a stack overflow security vulnerability. Thanks | |
3654 | to a patch from infamous42md. | |
3655 | ||
3656 | ! Added some sanity checks to OMAPI connection/authentication code. | |
3657 | Although highly improbable, due to having to deliver in excess of 2^32 | |
3658 | bytes of data via the OMAPI channel, not to mention requiring dhcpd to | |
3659 | be able to malloc() a memory region 2^32 bytes in size, it was possible | |
3660 | this might have resulted in a heap overflow security vulnerability. | |
3661 | Thanks to a patch from infamous42md. | |
88cd8aca DH |
3662 | |
3663 | - dmalloc() memset()'s the non-debug (data) portion of the allocated | |
3664 | memory to zero. Code that memset()'s the result returned by dmalloc() to | |
3665 | zero is redundant. These redundancies were removed. | |
3666 | ||
3667 | - Some type declaration corrections to u_int16_t were made in common/tr.c | |
4b97eaff | 3668 | (Token Ring support) thanks to a patch from Jason Vas Dias at Red Hat. |
88cd8aca DH |
3669 | |
3670 | - A failover bug that was allowing leases that EXPIRED or were RELEASED | |
3671 | where tsfp and tstp are identical timestamps to languish in these | |
3672 | transitional states has been repaired. As a side effect, lease | |
3673 | databases should be kept more consistent overall, not just for these | |
3674 | transitional states. | |
3675 | ||
3676 | - If the lease db is deleted out from under the daemon, and it moves to rewrite | |
3677 | the db, it will go ahead with the operation and move the new db into place | |
3678 | once it detects the old db does not exist. | |
3679 | ||
3680 | - dhclient now ignores IRDA, SIT, and IEEE1394 network interfaces, as it | |
3681 | is either nonsensical or (in the case of IEEE1394) is not known to support | |
3682 | these interfaces. Thanks to Marius Gedminas and Andrew Pollock of Debian. | |
3683 | ||
3684 | - Some previously undocumented reasons for dhclient-script invoking has | |
45d545f0 | 3685 | been documented in the dhclient-script.8 manpage. |
88cd8aca DH |
3686 | |
3687 | - Failover potential expiry calculations (TSTP) have been corrected. Results | |
3688 | should be substantially more consistent, and proper given the constraints. | |
3689 | ||
3690 | - Adjusted lease state validation checks in potential-conflict, to | |
3691 | account for possible clock skew similarly to normal state, and several | |
3692 | previously illegal transitions were made legal (ex: active->released). | |
3693 | ||
3694 | - An impossible sanity check was removed from omapi/buffer.c, thanks to a | |
3695 | patch from 'infamous42md'. | |
3696 | ||
3697 | - An OMAPI host/network byte order problem in lease time values has been | |
3698 | repaired. | |
3699 | ||
3700 | - Several minor bugs, largely relating to treating 8-byte time values as | |
3701 | 4-byte entities, have been repaired after careful review of the FreeBSD | |
3702 | ports collection's patch set. Thanks to the nameless entities who have | |
3703 | contributed to the FreeBSD ports. | |
3704 | ||
3705 | - When writing a trace file, the file is now created with permissions 0600, | |
3706 | to help administrators avoid accidentally publicising sensitive config | |
3707 | data. | |
3708 | ||
3709 | - The calculation of the maximum size of DHCP packets no longer includes | |
3710 | Ethernet framing overhead. The result is that the 'Maximum Message | |
3711 | Size' option advertised by clients, or the default value 576, is no | |
3712 | longer reduced by 14 bytes, and instead directly reflects the IP level | |
3713 | MTU (and the default, minimum allowed IP MTU of 576). | |
3714 | ||
3715 | - The special status of RELEASED/EXPIRED/RESET leases when a server | |
3716 | is operating in partner-down was fixed. It no longer requires a | |
3717 | lease be twice the MCLT beyond STOS to 'reallocate', and the expiry | |
3718 | event to turn these into FREE leases without peer acknowledgement | |
3719 | (after STOS+MCLT) has been repaired. | |
3720 | ||
3721 | - Compilation on older Solaris systems (lacking /usr/include/sys/int_types.h) | |
3722 | has been repaired. | |
3723 | ||
3724 | - "append"ing a string onto the end of a "t" type option (such as the | |
3725 | domain-name field) that had been improperly NULL-terminated by the | |
3726 | DHCP server will no longer result in a truncated string containing | |
3727 | only the option from the server, and not the expected appended value. | |
4b97eaff | 3728 | Thanks to a patch from Jason Vas Dias at Red Hat. |
88cd8aca DH |
3729 | |
3730 | - File handlers on configuration state (config files and lease dbs) should | |
98bd7ca0 | 3731 | be treated consistently, regardless of whether TRACING is defined or not. |
88cd8aca | 3732 | |
45d545f0 | 3733 | - The Linux build environment has had some minor improvements - better |
88cd8aca DH |
3734 | sensing of 64-bit pointer sizes (only used for establishing an icmp_id), |
3735 | and corrections to #if operators regarding LINUX_MAJOR should it ever | |
3736 | move to 3.[01].x. | |
3737 | ||
3738 | - The server now tries harder to survive the condition where it is unable | |
3739 | to open a new lease file to rewrite the lease state database. | |
3740 | ||
c75473d8 DH |
3741 | Changes since 3.0.3b3 |
3742 | ||
3743 | - dhclient.conf documentation for interface {} was updated to reflect recent | |
3744 | discussion on the dhcp-hackers mailing list. | |
3745 | ||
3746 | - In response to reports that the software does not compile on GCC 4.0.0, | |
3747 | -Werror was removed from Makefile.conf for all platforms that used it. | |
3748 | We will address the true problem in a future release; this is a temporary | |
3749 | workaround. | |
3750 | ||
3751 | Changes since 3.0.3b2 | |
3752 | ||
3753 | - An error in code changes introduced in 3.0.3b2 was corrected, which caused | |
3754 | static BOOTP clients to receive random addresses. | |
3755 | ||
3756 | Changes since 3.0.3b1 | |
3757 | ||
3758 | - A bug was fixed in BOOTPREQUEST handling code wherein stale references to | |
3759 | host records would be left behind on leases that were not allocated to the | |
3760 | client currently booting (eg in the case where the host was denied booting). | |
3761 | ||
3762 | - The dhcpd.conf.5 manpage was updated to be more clear in regards to | |
3763 | multiple host declarations (thanks to Vincent McIntyre). 'Interim' style | |
3764 | dynamic updates were also retouched. | |
3765 | ||
98311e4b DH |
3766 | Changes since 3.0.2 |
3767 | ||
3768 | - A bug was fixed where a server might load balance a DHCP REQUEST to its | |
45d545f0 | 3769 | peer after already choosing not to load balance the preceding DISCOVER. |
98311e4b DH |
3770 | The peer cannot allocate the originating server's lease. |
3771 | ||
3772 | - In the case where a secondary server lost its stable storage while the | |
3773 | primary was still in communications-interrupted, and came back online, | |
3774 | the lease databases would not be fully transferred to the secondary. | |
3775 | This was due to the secondary errantly sending an extra UPDREQ message | |
3776 | when the primary made its state transition to PARTNER-DOWN known. | |
3777 | ||
3778 | - The package will now compile cleanly in gcc 3.3 and 3.4. As a side effect, | |
3779 | lease structures will be 9 bytes smaller on all platforms. Thanks to | |
4b97eaff | 3780 | Jason Vas Dias at Red Hat. |
98311e4b DH |
3781 | |
3782 | - Interface discovery code in DISCOVER_UNCONFIGURED mode is now | |
3783 | properly restricted to only detecting broadcast interfaces. Thanks | |
4b97eaff | 3784 | to a patch from Jason Vas Dias at Red Hat. |
98311e4b DH |
3785 | |
3786 | - decode_udp_ip_header was changed so that the IP address was copied out | |
3787 | to a variable, rather than referenced by a pointer. This enforces 4-byte | |
3788 | alignment of the 32-bit IP address value. Thanks to a patch from Dr. | |
3789 | Peter Poeml. | |
3790 | ||
3791 | - An incorrect log message was corrected thanks to a patch from | |
3792 | Dr. Peter Poeml. | |
3793 | ||
3794 | - A bug in DDNS was repaired, where if the server's first DDNS action was | |
3795 | a DDNS removal rather than a DDNS update, the resolver library's | |
3796 | retransmit timer and retry timer was set to the default, implying a | |
3797 | 15 second timeout interval. Which is a little excessive in a synchronous, | |
3798 | single-threaded system. In all cases, ISC DHCP should now hold fast to | |
3799 | a 1-second timeout, trying only once. | |
3800 | ||
3801 | - The siaddr field was being improperly set to the server-identifier when | |
3802 | responding to DHCP messages. RFC2131 clarified the siaddr field as | |
3803 | meaning the 'next server in the bootstrap process', eg a tftp server. | |
3804 | The siaddr field is now left zeroed unless next-server is configured. | |
3805 | ||
3806 | - mockup_lease() could have returned in an error condition (or in the | |
3807 | condition where no fixed-address was found matching the shared | |
3808 | network) with stale references to a host record. This is probably not | |
3809 | a memory leak since host records generally never die anyway. | |
3810 | ||
3811 | - A bug was repaired where failover servers would let stale client identifiers | |
3812 | persist on leases that were reallocated to new clients not sending an id. | |
3813 | ||
3814 | - Binding scopes ("set var = value;") are now removed from leases allocated | |
3815 | by failover peers if the lease had expired. This should help reduce the | |
3816 | number of stale binding scopes on leases. | |
3817 | ||
3818 | - A small memory leak was closed involving client identifiers larger than | |
3819 | 7 bytes, and failover. | |
3820 | ||
3821 | - Configuring a subnet in dhcpd.conf with a subnet mask of 32 bits might | |
3822 | cause an internal function to overflow heap. Thanks to Jason Vas Dias | |
4b97eaff | 3823 | at Red Hat. |
98311e4b DH |
3824 | |
3825 | - Some inconsistencies in treating numbers that the lexer parsed as 'NUMBER' | |
3826 | or 'NUMBER_OR_NAME' was repaired. Hexadecimal parsing is affected, and | |
3827 | should work better. | |
3828 | ||
3829 | - In several cases, parse warnings were being issued before the lexical | |
3830 | token had been advanced to the token whose value was causing an error... | |
3831 | causing parse warnings to claim the problem is on the wrong token. | |
3832 | ||
3833 | - Host declarations matching on client identifier for dynamic leases will | |
3834 | no longer match fixed-address host declarations (this is now identical | |
3835 | to behaviour for host records matching on hardware address). | |
3836 | ||
3837 | Changes since 3.0.2rc3 | |
3838 | ||
3839 | - A previously undocumented configuration directive, 'local-address', | |
3840 | was documented in the dhcpd.conf manpage. | |
3841 | ||
3842 | Changes since 3.0.2rc2 | |
3843 | ||
45d545f0 | 3844 | - Two variables introduced in 3.0.2b1 were used without being initialized |
98311e4b DH |
3845 | in the case where neither the FILE nor SNAME fields were available for |
3846 | overloading. This was repaired. | |
3847 | ||
3848 | - A heretofore believed to be impossible corner case of the option | |
3849 | overloading implementation turned out to be possible ("Unable to sort | |
3850 | overloaded options after 10 tries."). The implementation was reworked | |
3851 | to consider the case of an option so large it would require more than | |
3852 | three chunks to fit. | |
3853 | ||
3854 | - Many other instances of variables being used without being initialized | |
3855 | were repaired. | |
3856 | ||
3857 | - An uninitialized variable in omapi_io_destroy() led to the discovery | |
3858 | that this function may result in orphaned pointers (and hence, a memory | |
3859 | leak). | |
3860 | ||
3861 | Changes since 3.0.2rc1 | |
3862 | ||
3863 | - allocate_lease() was rewritten to repair a bug in which the server would | |
3864 | try to allocate an ABANDONED lease when FREE leases were available. | |
3865 | ||
3866 | Changes since 3.0.2b1 | |
3867 | ||
3868 | - Some dhcp-eval.5 manpage formatting was repaired. | |
3869 | ||
3870 | Changes since 3.0.1 | |
3871 | ||
3872 | - A bug was fixed in the server's 'option overloading' implementation, | |
3873 | where options loaded into the 'file' and 'sname' packet fields were | |
3874 | not aligned precisely as rfc2131 dictates. | |
3875 | ||
3876 | - The FreeBSD client script was changed to support the case where a domain | |
3877 | name was not provided by the server. | |
3878 | ||
3879 | - A memory leak in 'omshell' per each command line parsed was | |
3880 | repaired, thanks to a patch from Jarkko Torppa. | |
3881 | ||
3882 | - Log functions writing to stderr were adjusted to use the STDERR_FILENO | |
3883 | system definition rather than '2'. This is a no-op for 90% of platforms. | |
3884 | ||
3885 | - One call to trace_write_packet_iov() counted the number of io vectors | |
3886 | incorrectly, causing inconsistent tracefiles. This was fixed. | |
3887 | ||
3888 | - Some expression parse failure memory leaks were closed. | |
3889 | ||
3890 | - A host byte order problem in tracefiles was repaired. | |
3891 | ||
3892 | - Pools configured in DHCPD for failover possessing permission lists that | |
adb95d23 | 3893 | previously were assumed to not include dynamic bootp clients are now |
98311e4b DH |
3894 | a little more pessimistic. The result is, dhcpd will nag you about just |
3895 | about most pools that possess a 'allow' statement with no 'deny' that | |
3896 | would definitely match a dynamic bootp client. | |
3897 | ||
3898 | - The 'ddns-update-style' configuration warning bit now insists that | |
3899 | the configuration be globally scoped. | |
3900 | ||
3901 | - Two memory leaks in dhclient were closed thanks to a patch from Felix | |
3902 | Farkas. | |
3903 | ||
3904 | - Some minor but excellently pedantic documentation errors were fixed | |
3905 | thanks to a patch from Thomas Klausner. | |
3906 | ||
3907 | - Bugs in operator precedence in executable statements have been repaired | |
3908 | once again. More legal syntaxes should be parsed legally. | |
3909 | ||
3910 | - Failing to initialize a tracefile for any reason if a tracefile was | |
3911 | specified is now a fatal error. Thanks to a patch from Albert Herranz. | |
3912 | ||
3913 | - Corrected a bug in which the number of leases transferred as calculated | |
3914 | by the failover primary and sent to peers in POOLRESP responses may be | |
3915 | incorrect. This value is not believed to be used by other failover | |
3916 | implementations, excepting perhaps as logged information. | |
3917 | ||
3918 | - Corrected a bug in which 'dhcp_failover_send_poolresp()' was in fact | |
3919 | sending POOLREQ messages instead of POOLRESP mesasges. This message | |
3920 | was essentially ignored since failover secondaries effectively do not | |
3921 | respond to POOLREQ messages. | |
3922 | ||
3923 | - Type definitions for various bitwidths of integers in the sunos5-5 | |
3924 | build of ISC DHCP have been fixed. It should compile and run more | |
3925 | easily when built in 64-bit for this platform. | |
3926 | ||
3927 | - "allow known-clients;" is now a legal syntax, to avoid confusion. | |
3928 | ||
3929 | - If one dhcp server chooses to 'load balance' a request to its failover | |
3930 | peer, it first checks to see if it believes said peer has a free | |
3931 | lease to allocate before ignoring the DISCOVER. | |
3932 | ||
3933 | - log() was logging a work buffer, rather than the value returned by | |
3934 | executing the statements configured by the user. In some cases, | |
3935 | the work buffer and the intended results were the same. In some other | |
3936 | cases, they were not. This was fixed thanks to a patch from Gunnar | |
3937 | Fjone and directconnect.no. | |
3938 | ||
3939 | - Compiler warnings for some string type conversions was fixed, thanks | |
3940 | to Andreas Gustafsson. | |
3941 | ||
3942 | - The netbsd build environments were simplified to one, in which | |
3943 | -Wconversion is not used, thanks to Andreas Gustafsson. | |
3944 | ||
3945 | - How randomness in the backoff-cutoff dhclient configuration variable | |
3946 | is implemented was better documented in the manpage, and the behaviour | |
3947 | of dhclient in REQUEST timeout handling was changed to match that of | |
3948 | DISCOVER timeout handling. | |
3949 | ||
3950 | - Omapi was hardened against clients that pass in null values, thanks | |
3951 | to a patch from Mark Jason Dominus. | |
3952 | ||
3953 | - A bug was fixed in dhclient that kept it from doing client-side | |
3954 | ddns updates. Thanks to a patch from Andreas Gustafsson, which | |
3955 | underwent some modification after review by Jason Vas Dias. | |
3956 | ||
3957 | - Failover implementations disconnected due to the network between | |
3958 | them (rather than one of the two shutting down) will now try to | |
3959 | re-establish the failover connection every 5 seconds, rather than | |
3960 | to simply try once and give up until one of them is restarted. | |
3961 | Thanks to a patch from Ulf Ekberg from Infoblox, and field testing | |
3962 | by Greger V. Teigre which led to an enhancement to it. | |
3963 | ||
3964 | - A problem that kept DHCP Failover secondaries from tearing down | |
3965 | ddns records was repaired. Thanks to a patch from Ulf Ekberg from | |
3966 | Infoblox. | |
3967 | ||
3968 | - 64bit pointer sizes are detected properly on FreeBSD now. | |
3969 | ||
3970 | - A bug was repaired where the DHCP server would leave stale references | |
3971 | to host records on leases it once thought about offering to certain | |
3972 | clients. The result would be to apply host and 'known' scopes to the | |
3973 | wrong clients (possibly denying booting). NOTE: The 'mis-host' patch | |
3974 | that was being circulated as a workaround is not the way this bug was | |
3975 | fixed. If you were a victim of this bug in 3.0.1, you are cautioned | |
3976 | to proceed carefully and see if it fixes your problem. | |
3977 | ||
3978 | - A bug was repaired in the server's DHCPINFORM handling, where it | |
3979 | tried to divine the client's address from the source packet and | |
3980 | would get it wrong. Thanks to Anshuman Singh Rawat. | |
3981 | ||
3982 | - A log message was introduced to help illuminate the case where the | |
3983 | server was unable to find a lease to assign to any BOOTP client. | |
3984 | Thanks to Daniel Baker. | |
3985 | ||
3986 | - A minor dhcpd.conf.5 manpage error was fixed. | |
3987 | ||
3988 | Changes since 3.0.1rc14 | |
3989 | ||
3990 | - The global variable 'cur_time' was centralized and is now uniformly of a | |
3991 | type #defined in system-dependent headers. It had previously been defined | |
3992 | in one of many places as a 32-bit value, and this causes mayhem on 64-bit | |
3993 | big endian systems. It probably wasn't too healthy on little endian | |
3994 | systems either. | |
3995 | ||
3996 | - A printf format string error introduced in rc14 was repaired. | |
3997 | ||
3998 | - AIX system-dependent header file was altered to only define NO_SNPRINTF | |
3999 | if the condition used to #ifdef in vsnprintf in AIX' header files | |
4000 | is false. | |
4001 | ||
4002 | - The Alpha/OSF system-dependent header file was altered to define | |
4003 | NO_SNPRINTF on OS revisions older than 4.0G. | |
4004 | ||
4005 | - omapip/test.c had string.h added to its includes. | |
4006 | ||
4007 | Changes since 3.0.1rc13 | |
4008 | ||
4009 | ! CAN-2004-0460 - CERT VU#317350: Five stack overflow exploits were closed | |
4010 | in logging messages with excessively long hostnames provided by the | |
4011 | clients. It is highly probable that these could have been used by | |
4012 | attackers to gain arbitrary root access on systems using ISC DHCP 3.0.1 | |
4013 | release candidates 12 or 13. Special thanks to Gregory Duchemin for | |
4014 | both finding and solving the problem. | |
4015 | ||
4016 | ! CAN-2004-0461 - CERT VU#654390: Once the above was closed, an opening | |
45d545f0 | 4017 | in log_*() functions was evidenced, on some specific platforms where |
98311e4b DH |
4018 | vsnprintf() was not believed to be available and calls were wrapped to |
4019 | sprintf() instead. Again, credit goes to Gregory Duchemin for finding | |
4020 | the problem. Calls to snprintf() are now linked to a distribution-local | |
4021 | snprintf implementation, only in those cases where the architecture is | |
4022 | not known to provide one (see includes/cf/[arch].h). If you experience | |
4023 | linking problems with snprintf/vsnprintf or 'isc_print_' functions, this | |
4024 | is where to look. This vulnerability did not exist in any previously | |
4025 | published version of ISC DHCP. | |
4026 | ||
4027 | - Compilation on hpux 11.11 was repaired. | |
4028 | ||
4029 | - 'The cross-compile bug fix' was backed out. | |
4030 | ||
4031 | Changes since 3.0.1rc12 | |
4032 | ||
4033 | - Fixed a bug in omapi lease lookup function, to form the hardware | |
4034 | address for the hash lookup correctly, thanks to a patch from | |
4035 | Richard Hirst. | |
4036 | ||
4037 | - Fixed a bug where dhcrelay was sending relayed responses back to the | |
4038 | broadcast address, but with the source's unicast mac address. Should | |
4039 | now conform to rfc2131 section 4.1. | |
4040 | ||
4041 | - Cross-compile bug fix; use $(AR) instead of ar. Thanks to Morten Brorup. | |
4042 | ||
4043 | - Fixed a crash bug in dhclient where dhcpd servers that do not provide | |
4044 | renewal times results in an FPE. As a side effect, dhclient can now | |
4045 | properly handle 0xFFFFFFFF (-1) expiry times supplied by servers. Thanks | |
4046 | to a patch from Burt Silverman. | |
4047 | ||
4048 | - The 'ping timeout' debugs from rc12 were removed to -DDEBUG only, | |
45d545f0 | 4049 | and reformatted to correct a compilation error on Solaris platforms. |
98311e4b DH |
4050 | |
4051 | - A patch was applied which fixes a case where leases read from the | |
4052 | leases database do not properly over-ride previously read leases. | |
4053 | ||
4054 | - dhcpctl.3 manpage was tweaked. | |
4055 | ||
4056 | Changes since 3.0.1rc11 | |
4057 | ||
4058 | - A patch from Steve Campbell was applied with minor modifications to | |
4059 | permit reverse dns PTR record updates with values containing spaces. | |
4060 | ||
4061 | - A patch from Florian Lohoff was applied with some modifications to | |
4062 | dhcrelay. It now discards packets whose hop count exceeds 10 by default, | |
4063 | and a command-line option (-c) can be used to set this threshold. | |
4064 | ||
4065 | - A failover bug relating to identifying peers by name length instead of | |
4066 | by name was fixed. | |
4067 | ||
45d545f0 | 4068 | - Declaring failover configs within shared-network statements should no |
98311e4b DH |
4069 | longer result in error. |
4070 | ||
4071 | - The -nw command line option to dhclient now works. | |
4072 | ||
4073 | - Thanks to a patch from Michael Richardson: | |
4074 | - Some problems with long option processing have been fixed. | |
4075 | - Some fixes to minires so that updates of KEY records will work. | |
4076 | ||
4077 | - contrib/ms2isc was updated by Shu-Min Chang of the Intel Corporation. | |
4078 | see contrib/ms2isc/readme.txt for revision notes. | |
4079 | ||
4080 | - Dhclient no longer uses shell commands to kill another instance of | |
4081 | itself, it sends the signal directly. Thanks to a patch from Martin | |
4082 | Blapp. | |
4083 | ||
4084 | - The FreeBSD dhclient-script was changed so that a failure to write to | |
4085 | /etc/resolv.conf does not prematurely end the script. This keeps dhclient | |
4086 | from looping infinitely when this is the case. Thanks to a patch from | |
4087 | Martin Blapp. | |
4088 | ||
4089 | - A patch from Bill Stephens was applied which resolves a problem with lease | |
4090 | expiry times in failover configurations. | |
4091 | ||
4092 | - A memory leak in configuration parsing was closed thanks to a patch from | |
4093 | Steve G. | |
4094 | ||
4095 | - The function which discovers interfaces will now skip non-broadcast or | |
4096 | point-to-point interfaces, thanks to a patch from David Brownlee. | |
4097 | ||
4098 | - Options not yet known by the dhcpd or dhclient have had their names | |
4099 | changed such that they do not contain # symbols, in case they should ever | |
4100 | appear in a lease file. An option that might have been named "#144" is | |
4101 | now "unknown-144". | |
4102 | ||
4103 | - Another patch from Bill Stephens which allows the ping-check timeout to | |
4104 | be configured as 'ping-timeout'. Defaults to 1. | |
4105 | ||
4106 | Changes since 3.0.1rc10 | |
4107 | ||
4108 | - Potential buffer overflows in minires repaired. | |
4109 | ||
4110 | - A change to the linux client script to use /bin/bash, since /bin/sh may | |
4111 | not be bash. | |
4112 | ||
4113 | - Some missing va_end cleanups thanks to a patch from Thomas Klausner. | |
4114 | ||
4115 | - A correction of boolean parsing syntax validation - some illegal syntaxes | |
4116 | that worked before are now detected and produce errs, some legal syntaxes | |
4117 | that errored before will now work properly. | |
4118 | ||
4119 | - Some search-and-replace errors that caused some options to change their | |
4120 | names was repaired. | |
4121 | ||
4122 | - Shu-min Chang of the Intel corporation has contributed a perl script and | |
4123 | module that converts the MS NT4 DHCP configuration to a ISC DHCP3 | |
4124 | configuration file. | |
4125 | ||
4126 | - Applied the remainder of the dhcpctl memory leak patch provided by Bill | |
4127 | Squier at ReefEdge, Inc. (groo@reefedge.com). | |
4128 | ||
4129 | - Missing non-optional failover peer configurations will now result in a soft | |
4130 | error rather than a null dereference. | |
4131 | ||
4132 | Changes since 3.0.1rc9 | |
4133 | ||
4134 | - A format string was corrected to fix compiler warnings. | |
4135 | ||
4136 | - A number of spelling corrections were made in the man pages. | |
4137 | ||
4138 | - The dhclient.conf.5 man page was changed to refer to do-forward-updates | |
4139 | rather than a configuration option that doesn't exist. | |
4140 | ||
4141 | - A FreeBSD-specific bug in the interface removal handling was fixed. | |
4142 | ||
4143 | - A Linux-specific Token Ring detection problem was fixed. | |
4144 | ||
4145 | - Hashes removed from as-yet-unknown agent options, having those options | |
4146 | appear in reality before we know about them will no longer produce | |
4147 | self-corrupting lease databases. | |
4148 | ||
4149 | - dhclient will use the proper port numbers now when using the -g option. | |
4150 | ||
4151 | - A order-of-operations bug with 2 match clauses in 1 class statement is | |
4152 | fixed thanks to a patch from Andrew Matheson. | |
4153 | ||
4154 | - Compilation problems on Solaris were fixed. | |
4155 | ||
4156 | - Compilation problems when built with DEBUG or DEBUG_PACKET were repaired. | |
4157 | ||
4158 | - A fix to the dhcp ack process which makes certain group options will be | |
4159 | included in the first DHCPOFFER message was made thanks to a patch from | |
4160 | Ling Gou. | |
4161 | ||
4162 | - A few memory leaks were repaired thanks to patches from Bill Squier at | |
4163 | ReefEdge, Inc. (groo@reefedge.com). | |
4164 | ||
4165 | - A fix for shared-networks that sometimes give clients options for the | |
4166 | wrong subnets (in particular, 'option routers') was applied, thanks to | |
4167 | Ted Lemon for the patch. | |
4168 | ||
4169 | - Omshell's handling of dotted octets as values was changed such that dots | |
4170 | one after the other produce zero values in the integer string. | |
4171 | ||
4172 | Changes since 3.0.1rc8 | |
4173 | ||
4174 | - Fix a format string vulnerability in the server that could lead to a | |
4175 | remote root compromise (discovered by NGSEC Research Team, www.ngsec.com). | |
4176 | ||
4177 | - Add additional support for NetBSD/sparc64. | |
4178 | ||
4179 | - Fix a bug in the command-line parsing of the client. Also, resolve | |
4180 | a memory leak. | |
4181 | ||
4182 | - Add better support for shells other than bash in the Linux client | |
4183 | script. | |
4184 | ||
4185 | - Various build fixes for modern versions of FreeBSD and Linux. | |
4186 | ||
4187 | - Fix a bad bounds check when printing binding state names. | |
4188 | ||
4189 | - Clarify documentation about fixed-address and multiple addresses. | |
4190 | ||
4191 | - Fix a typo in the authoritative error message. | |
4192 | ||
4193 | - Make a log entry when we can't write a billing class. | |
4194 | ||
4195 | - Use conversion targets that are the right size on all architectures. | |
4196 | ||
4197 | - Increment the hop count when relaying. | |
4198 | ||
4199 | - Log a message when lease state is changed through OMAPI. | |
4200 | ||
4201 | - Don't rerun the shared_network when evaluating the pool. | |
4202 | ||
4203 | - Fix a reversed test in the parser. | |
4204 | ||
4205 | - Change the type of rbuf_max. | |
4206 | ||
4207 | - Make FTS_LAST a manifest constant to quiet warnings. | |
4208 | ||
4209 | Changes since 3.0.1rc7 | |
4210 | ||
4211 | - Fix two compiler warnings that are generated when compiling on Solaris | |
4212 | with gcc. These stop the build, even though they weren't actually | |
4213 | errors, because we prefer that our builds generate no warnings. | |
4214 | ||
4215 | Changes since 3.0.1rc6 | |
4216 | ||
4217 | - Don't allow a lease that's in the EXPIRED, RELEASED or RESET state | |
4218 | to be renewed. | |
4219 | ||
4220 | - Implement lease stealing for cases where the primary has fewer leases | |
4221 | than the secondary, as called for by the standard. | |
4222 | ||
4223 | - Add a fudge factor to the lease expiry acceptance code, (suggested | |
4224 | by Kevin Miller of CMU). | |
4225 | ||
4226 | - Fix a bug in permit_list_match that made it much too willing to say | |
4227 | that two permit lists matched. | |
4228 | ||
4229 | - Unless DEBUG_DNS_UPDATES is defined, print more user-friendly (and | |
4230 | also more compact) messages about DNS updates. | |
4231 | ||
4232 | - Fix a bug in generating wire-format domain names for the FQDN option. | |
4233 | ||
4234 | - Fix a bug where the FQDN option would not be returned if the client | |
4235 | requested it, contrary to the standard. | |
4236 | ||
4237 | - On Darwin, use the FreeBSD DHCP client script. | |
4238 | ||
4239 | - On NetBSD/sparc, don't check for casting warnings. | |
4240 | ||
4241 | - Add a flag in the DHCP client to disable updating the client's A | |
4242 | record when sending an FQDN option indicating that the client is | |
4243 | going to update its A record. | |
4244 | ||
4245 | - In the client, don't attempt a DNS update until one second after | |
4246 | configuring the new IP address, and if the update times out, keep | |
4247 | trying until a response, positive or negative, is received from the | |
4248 | DNS server. | |
4249 | ||
4250 | - Fix an uninitialized memory bug in the DHCP client. | |
4251 | ||
4252 | - Apply some FreeBSD-specific bug fixes suggested by Murray Stokely. | |
4253 | ||
4254 | - Fix a bug in ns_parserr(), where it was returning the wrong sort | |
4255 | of result code in some cases (suggested by Ben Harris of the | |
4256 | NetBSD project). | |
4257 | ||
4258 | - Fix a bug in is_identifier(), where it was checking against EOF | |
4259 | instead of the END_OF_FILE token (also suggested by Ben Harris). | |
4260 | ||
4261 | - Fix a bug where if an option universe contained no options, the | |
4262 | DHCP server could dump core (Walter Steiner). | |
4263 | ||
4264 | - Fix a bug in the handling of encapsulated options. | |
4265 | ||
4266 | - Fix a bug that prevented NWIP suboptions from being processed. | |
4267 | ||
4268 | - Delete the FTS_BOOTP and FTS_RESERVED states and implement them | |
4269 | as modifier flags to the FTS_ACTIVE state, as called for in the | |
4270 | failover protocol standard. | |
4271 | ||
4272 | - Fix bugs in the pool merging code that resulted in references and | |
4273 | dereferences of null pointers. This bug had no impact unless the | |
4274 | POINTER_DEBUG flag was defined. | |
4275 | ||
4276 | - In the server, added a do-forward-updates flag that can be used to | |
4277 | disable forward updates in all cases, so that sites that want the | |
4278 | clients to take sole responsibility for updating their A record can | |
4279 | do so. | |
4280 | ||
4281 | - Make it possible to disable optimization of PTR record updates. | |
4282 | ||
4283 | Changes since 3.0.1rc5 | |
4284 | ||
4285 | - Include some new documentation and changes provided by Karl Auer. | |
4286 | ||
4287 | - Add a workaround for some Lexmark printers that send a double-NUL- | |
4288 | terminated host-name option, which would break DNS updates. | |
4289 | ||
4290 | - Fix an off-by-one error in the MAC-address checking code for | |
4291 | DHCPRELEASE that was added in 3.0.1rc5. | |
4292 | ||
4293 | - Fix a bug where client-specific information was not being discarded | |
4294 | from the lease when it expired or was released, resulting in | |
4295 | problems if the lease was reallocated to a different client. | |
4296 | ||
4297 | - If more than one allocation pool is specified that has the same set | |
4298 | of constraints as another allocation pool on the same shared | |
4299 | network, merge the two pools. | |
4300 | ||
4301 | - Don't print an error in fallback_discard, since this just causes | |
4302 | confusion and does not appear to be helping to encourage anyone to | |
4303 | fix this bug. | |
4304 | ||
4305 | Changes since 3.0.1rc4 | |
4306 | ||
4307 | - Fix a bug that would cause the DHCP server to spin if asked to parse | |
4308 | a certain kind of incorrect statement. | |
4309 | ||
4310 | - Fix a related bug that would prevent an error from being reported in | |
4311 | the same case. | |
4312 | ||
4313 | - Additional documentation. | |
4314 | ||
4315 | - Make sure that the hardware address matches the lease when | |
4316 | processing a DHCPRELEASE message. | |
4317 | ||
4318 | Changes since 3.0.1rc3 | |
4319 | ||
4320 | - A minor bug fix in the arguments to a logging function call. | |
4321 | - Documentation update for dhcpd.conf. | |
4322 | ||
adbef119 | 4323 | Changes since 3.0.1rc2 |
98311e4b DH |
4324 | |
4325 | - Allow the primary to send a POOLREQ message. This isn't what the current | |
4326 | failover draft says to do, so we may have to back it out if I can't get the | |
4327 | authors to relent, but the scheme for balancing that's specified in the | |
4328 | current draft seems needlessly hairy, so I'm floating a trial balloon. | |
4329 | The rc1 code did not implement the method described in the draft either. | |
4330 | ||
adbef119 | 4331 | Changes since 3.0.1rc1 |
98311e4b DH |
4332 | |
4333 | - Treat NXDOMAIN and NXRRSET as success when we are trying to delete a | |
4334 | domain or RRSET. This allows the DHCP server to forget about a name | |
4335 | it added to the DNS once it's been removed, even if the DHCP server | |
4336 | wasn't the one that removed it. | |
4337 | ||
4338 | - Install defaults for failover maximum outstanding updates and maximum | |
4339 | silent time. This prevents problems that might occur if these values | |
4340 | were not configured. | |
4341 | ||
4342 | - Don't do DDNS deletes if ddns-update-style is none. | |
4343 | ||
4344 | - Return relay agent information options in DHCPNAK. This prevents DHCPNAK | |
4345 | messages from being dropped when the relay agent information option contains | |
4346 | routing information. | |
4347 | ||
4348 | - Fix a problem where coming up in recover wouldn't result in an update | |
4349 | request being sent. | |
4350 | ||
4351 | - Add some more chatty messages when we start a recovery update and when it's | |
4352 | done. | |
4353 | ||
4354 | - Fix a possible problem where some state might have been left around | |
4355 | after the peer lost contact and regained contact about how many updates | |
4356 | were pending. | |
4357 | ||
4358 | - Don't nix a lease update because of a lease conflict. This test has | |
4359 | never (as far as I know) prevented a mistake, and it appears to cause | |
4360 | problems with failover. | |
4361 | ||
4362 | - Add support in rc history code for keeping a selective history, rather | |
4363 | than a history of all references and dereferences. This code is only used | |
4364 | when extensive additional debugging is enabled. | |
4365 | ||
adbef119 | 4366 | Changes since 3.0 |
98311e4b DH |
4367 | |
4368 | - Make allocators for hash tables. As a side effect, this fixes a memory | |
4369 | smash in the subclass allocation code. | |
4370 | ||
4371 | - Fix a small bug in omshell where if you try to close an object when | |
4372 | no object is open, it dumps core. | |
4373 | ||
4374 | - Fix an obscure coredump that could occur on shutdown. | |
4375 | ||
4376 | - Fix a bug in the recording of host declaration rubouts in the lease file. | |
4377 | ||
4378 | - Fix two potential spins in the host deletion code. | |
4379 | ||
4380 | - Fix a core dump that would happen if an application tried to update | |
4381 | a host object attribute with a null value. | |
4382 | ||
4383 | Changes since 3.0 Release Candidate 12 | |
4384 | ||
4385 | - Fix a memory leak in the evaluation code. | |
4386 | ||
4387 | - Fix an obscure core dump. | |
4388 | ||
4389 | - Print a couple of new warnings when parsing the configuration file | |
4390 | when crucial information is left out. | |
4391 | ||
4392 | - Log "no free leases" as an error. | |
4393 | ||
4394 | - Documentation updates. | |
4395 | ||
4396 | Changes since 3.0 Release Candidate 11 | |
4397 | ||
4398 | - Always return a subnet selection option if one is sent. | |
4399 | ||
4400 | - Fix a warning that was being printed because an automatic data | |
4401 | structure wasn't zeroed. | |
4402 | ||
4403 | - Fix some failover state transitions that were being handled | |
4404 | incorrectly. | |
4405 | ||
4406 | - When supersede_lease is called on a lease whose end time has already | |
4407 | expired, but for which a state transition has not yet been done, do | |
4408 | a state transition. This fixes the case where if the secondary | |
4409 | allocated a lease to a client and the lease "expired" while the | |
4410 | secondary was in partner-down, no expiry event would actually | |
4411 | happen, so the lease would remain active until the primary was | |
4412 | restarted. | |
4413 | ||
4414 | Changes since 3.0 Release Candidate 10 | |
4415 | ||
4416 | - Fix a bug that was preventing released leases from changing state | |
4417 | in failover-enabled pools. | |
4418 | ||
4419 | - Fix a core dump in the client identifier finder code (for host | |
4420 | declarations). | |
4421 | ||
4422 | - Finish fixing a bug where bogus data would sometimes get logged to | |
4423 | the dhclient.leases file because it was opened as descriptor 2. | |
4424 | ||
4425 | - Fix the Linux dhclient-script according to suggestions made by | |
4426 | several people on the dhcp-client mailing list. | |
4427 | ||
4428 | - Log successful DNS updates at LOG_INFO, not LOG_ERROR. | |
4429 | ||
4430 | - Print an error message and refuse to run if a failover peer is | |
4431 | defined but not referenced by any pools. | |
4432 | ||
4433 | - Correct a confusing error message in failover. | |
4434 | ||
eaf0b302 TL |
4435 | Changes since 3.0 Release Candidate 9 |
4436 | ||
4437 | - Fix a bug in lease allocation for Dynamic BOOTP clients. | |
4438 | ||
0db87765 TL |
4439 | Changes since 3.0 Release Candidate 8 Patchlevel 2 |
4440 | ||
4441 | - Fix a bug that prevented update-static-leases from working. | |
4442 | ||
4443 | - Document failover-state OMAPI object. | |
4444 | ||
4445 | - Fix a compilation error on SunOS 4. | |
4446 | ||
d758ad8c TL |
4447 | Changes since 3.0 Release Candidate 8 Patchlevel 1 |
4448 | ||
4449 | - Fix a parsing bug that broke dns updates (both interim and ad-hoc). | |
4450 | This was introduced in rc8pl1 as an unintended result of the memory | |
4451 | leakage fixes that were in pl1. | |
4452 | ||
4453 | - Fix a long-standing bug where the server would record that an update | |
4454 | had been done for a client with no name, even though no update had | |
4455 | been done, and then when the client's lease expired the deletion of | |
4456 | that nonexistant record would time out because the name was the null | |
9a111ee8 | 4457 | string. |
d758ad8c TL |
4458 | |
4459 | - Clean up the omshell, dhcpctl and omapi man pages a bit. | |
4460 | ||
d758ad8c TL |
4461 | Changes since 3.0 Release Candidate 8 |
4462 | ||
4463 | - Fix a bug that could cause the DHCP server to spin if | |
4464 | one-lease-per-client was enabled. | |
4465 | ||
4466 | - Fix a bug that was causing core dumps on BSD/os in the presence of | |
4467 | malformed packets. | |
4468 | ||
4469 | - In partner-down state, don't restrict lease lengths to MCLT. | |
4470 | ||
4471 | - On the failover secondary, record the MCLT received from the primary | |
4472 | so that if we come up without a connection to the primary we don't | |
4473 | wind up giving out zero-length leases. | |
4474 | ||
4475 | - Fix some compilation problems on BSD/os. | |
4476 | ||
4477 | - Fix a bunch of memory leaks. | |
4478 | ||
4479 | - Fix a couple of bugs in the option printer. | |
4480 | ||
4481 | - Fix an obscure error reporting bug in the dns update code, and also | |
4482 | make the message clearer when a key algorithm isn't supported. | |
4483 | ||
4484 | - Fix a bug in the tracing code that prevented trace runs that used | |
4485 | tcp connections from being played back. | |
4486 | ||
4487 | - Add some additional debugging capability for catching memory leaks | |
4488 | on exit. | |
4489 | ||
4490 | - Make the client release the lease correctly on shutdown. | |
4491 | ||
4492 | - Add some configurability to the build system. | |
4493 | ||
4494 | - Install omshell manual page in man1, not man8. | |
4495 | ||
4496 | - Craig Gwydir sent in a patch that fixes a long-standing bug in the | |
4497 | DHCP client that could cause core dumps, but that for some reason | |
4498 | hadn't been noticed until now. | |
4499 | ||
4500 | Changes since 3.0 Release Candidate 7 | |
4501 | ||
4502 | - Fix a bug in failover where we weren't sending updates after a | |
4503 | transition from communications-interrupted to normal. | |
4504 | ||
4505 | - Handle expired/released/reset -> free transition according to the | |
4506 | protocol specification (this works - the other way not only wasn't | |
4507 | conformant, but also didn't work). | |
4508 | ||
4509 | - Add a control object in both client and server that allows either | |
4510 | daemon to be shut down cleanly. | |
4511 | ||
4512 | - When writing a lease, if we run out of disk space, shut down the | |
4513 | output file and insist on writing a new one before proceeding. | |
4514 | ||
4515 | - In the server, if the OMAPI listener port is occupied, keep trying | |
4516 | to get it, rather than simply giving up and exiting. | |
4517 | ||
4518 | - Support fetching variables from leases and also updating and adding | |
4519 | variables to leases via OMAPI. | |
4520 | ||
4521 | - If two failover peers have wildly different clocks, refuse to start | |
4522 | doing failover. | |
4523 | ||
4524 | - Fix a bug in the DNS update code that could cause core dumps when | |
4525 | running on alpha processors. | |
4526 | ||
4527 | - Fixed a bug in ddns updates for static lease entries, thanks to a | |
4528 | patch from Andrey M Linkevitch. | |
4529 | ||
4530 | - Add support for Darwin/MacOS X | |
4531 | ||
4532 | - Install omshell (including new documentation). | |
4533 | ||
4534 | - Support DNS updates in the client (this is a very obscure feature | |
4535 | that most DHCP client users probably will not be able to use). | |
4536 | ||
4537 | - Somewhat cleaner status logging in the client. | |
4538 | ||
4539 | - Make OMAPI key naming syntax compatible with the way keys are | |
4540 | actually named (key names are domain names). | |
4541 | ||
4542 | - Fix a bug in the lease file writer. | |
4543 | ||
4544 | - Install DHCP ISC headers in a different place than BIND 9 ISC | |
4545 | headers, to avoid causing trouble in BIND 9 builds. | |
4546 | ||
4547 | - Don't send updates for attributes on an object when the attributes | |
4548 | haven't changed. Support deleting attributes on remote objects. | |
4549 | ||
4550 | - Fix a number of bugs in omshell, and add the unset and refresh | |
4551 | statements. | |
4552 | ||
4553 | - Handle disconnects in OMAPI a little bit more intelligently (so that | |
4554 | the caller gets ECONNRESET instead of EINVAL). | |
4555 | ||
4556 | - Fix a bunch of bugs in the handling of clients that have existing | |
4557 | leases when the try to renew their leases while failover is | |
4558 | operating. | |
4559 | ||
eaf0b302 TL |
4560 | Changes since 3.0 Release Candidate 6 |
4561 | ||
4562 | - Fix a core dump that could happen when processing a DHCPREQUEST from | |
4563 | a client that had a host declaration that contained both a | |
4564 | fixed-address declaration and a dhcp-client-identifier option | |
4565 | declaration, if the client identifier was longer than nine bytes. | |
4566 | ||
4567 | - Fix a memory leak that could happen in certain obscure cases when | |
4568 | using omapi to manipulate leases. | |
4569 | ||
4570 | - Fix some bugs and omissions in omshell. | |
4571 | ||
eaf0b302 TL |
4572 | Changes since 3.0 Release Candidate 5 |
4573 | ||
4574 | - Fix a bug in omapi_object_dereference that prevented objects in | |
4575 | chains from having their reference counts decreased on dereference. | |
4576 | ||
4577 | - Fix a bug in omapi_object_dereference that would prevent object | |
4578 | chains from being freed upon removal of the last reference external | |
4579 | to the chain. | |
4580 | ||
4581 | - Fix a number of other memory leaks in the OMAPI protocol subsystem. | |
4582 | ||
4583 | - Add code in the OMAPI protocol handler to trace memory leakage. | |
4584 | ||
4585 | - Clean up the memory allocation/reference history printer. | |
4586 | ||
98311e4b | 4587 | - Support input of dotted quads and colon-separated hex lists as |
eaf0b302 TL |
4588 | attribute values in omshell. |
4589 | ||
98311e4b | 4590 | - Fix a typo in the Linux interface discovery code. |
eaf0b302 TL |
4591 | |
4592 | - Conditionalize a piece of trace code that wasn't conditional. | |
4593 | ||
4594 | Changes since 3.0 Release Candidate 4 | |
4595 | ||
4596 | - Fix a bug that would prevent leases from being abandoned properly on | |
4597 | DHCPDECLINE. | |
4598 | ||
4599 | - Fix failover peer OMAPI support. | |
4600 | ||
4601 | - In failover, correctly handle expiration of leases. Previously, | |
4602 | leases would never be reclaimed because they couldn't make the | |
4603 | transition from EXPIRED to FREE. | |
4604 | ||
4605 | - Fix some broken failover state transitions. | |
4606 | ||
4607 | - Documentation fixes. | |
4608 | ||
4609 | - Take out an unnecessary check in DHCP relay agent information option | |
4610 | stashing code that was preventing REBINDING clients from rebinding. | |
4611 | ||
4612 | - Prevent failover peers from allocating leases in DHCPREQUEST | |
4613 | processing if the lease belongs to the other server. | |
4614 | ||
4615 | - Record server version in lease file introductory comment. | |
4616 | ||
4617 | - Correctly report connection errors in OMAPI and failover. | |
4618 | ||
4619 | - Make authentication signature algorithm name comparisons in OMAPI | |
4620 | case-insensitive. | |
4621 | ||
4622 | - Fix compile problem on SunOS 4.x | |
4623 | ||
98311e4b | 4624 | - If a signature algorithm is not terminated with '.', terminate it so |
eaf0b302 TL |
4625 | that comparisons between fully-qualified names will work |
4626 | consistently. | |
4627 | ||
4628 | - Different SIOCGIFCONF probe code, may "fix" problem on some Linux | |
4629 | systems with the probe not working correctly. | |
4630 | ||
4631 | - Don't allow user to type omapi key on command line of omshell. | |
4632 | ||
0596b051 TL |
4633 | Changes since 3.0 Release Candidate 3 |
4634 | ||
4635 | - Do lease billing on startup in a way that I *think* will finally do | |
4636 | the billing correctly - the previous method could overbill as a | |
4637 | result of duplicate leases. | |
4638 | ||
4639 | - Document OMAPI server objects. | |
4640 | ||
892fe689 TL |
4641 | Changes since 3.0 Release Candidate 2 Patchlevel 1 |
4642 | ||
4643 | - Fix some problems in the DDNS update code. Thanks to Albert | |
4644 | Herranz for figuring out the main problem. | |
4645 | ||
4646 | - Fix some reference counting errors on host entries that were causing | |
4647 | core dumps. | |
4648 | ||
4649 | - Fix a byte-swap bug in the token ring code, thanks to Jochen | |
4650 | Friedrich. | |
4651 | ||
4652 | - Fix a bug in lease billing, thanks to Jonas Bulow. | |
4653 | ||
4654 | Changes since 3.0 Release Candidate 2 | |
4655 | ||
4656 | - Change the conditions under which a DHCPRELEASE is actually | |
4657 | committed to be consistent with lease binding states rather than | |
98311e4b | 4658 | using the lease end time. This may fix some problems with the |
892fe689 TL |
4659 | billing class code. |
4660 | ||
4661 | - Fix a bug where lease updates would fail on Digital Unix (and maybe | |
4662 | others) because malloc was called with a size of zero. | |
4663 | ||
4664 | - Fix a core dump that happens when the DHCP server can't create its | |
4665 | trace file. | |
4666 | ||
79ea3de8 | 4667 | Changes since 3.0 Release Candidate 1 Patchlevel 1 |
87784777 | 4668 | |
79ea3de8 TL |
4669 | - Fix the dhcp_failover_put_message to not attempt to allocate a |
4670 | zero-length buffer. Some versions of malloc() fail if you try to | |
4671 | allocate a zero-length buffer, and this was causing problems on, | |
4672 | e.g., Digital Unix. | |
4673 | ||
4674 | - Fix a case where the failover code was printing an error message | |
4675 | when no error had occurred. | |
4676 | ||
4677 | - Fix a problem where when a server went down and back up again, the | |
4678 | peer would not see a state transition and so would stay in the | |
4679 | non-communicating state. | |
4680 | ||
4681 | - Be smart about going into recover_wait. | |
4682 | ||
4683 | - Fix a problem in the failover implementation where peers would fail | |
4684 | to come into sync if interrupted in the RECOVER state. This could | |
4685 | have been the cause of some problems people have reported recently. | |
4686 | ||
4687 | - Fix a problem with billing classes where they would not be unbilled | |
4688 | when the client lease expired. | |
4689 | ||
4690 | - If select fails, figure out which descriptor is bad, and cut it out | |
4691 | of the I/O loop. This prevents a potentially nasty spin. I | |
4692 | haven't heard any report it in a while, but it came up consistently | |
4693 | in testing. | |
4694 | ||
4695 | - Fix a bug in the relay agent where if you specified interfaces on | |
4696 | the command line, it would fail. | |
4697 | ||
4698 | - Fix a couple of small bugs in the omapi connection object (no known | |
4699 | user impact). | |
4700 | ||
4701 | - Add the missing 3.0 Beta 1 lease conversion script. | |
4702 | ||
4703 | - Read dhcp client script hooks if they exist, rather than only if | |
4704 | they're executable. | |
4705 | ||
4706 | Changes since 3.0 Release Candidate 1 | |
87784777 TL |
4707 | |
4708 | - Fix a memory smash that happens when fixed-address leases are used. | |
4709 | ANY SITE AT WHICH FIXED-ADDRESS STATEMENTS ARE BEING USED SHOULD | |
4710 | UPGRADE IMMEDIATELY. This has been a long-standing bug - thanks to | |
4711 | Alvise Nobile for discovering it and helping me to find it! | |
4712 | ||
79ea3de8 TL |
4713 | - Fix a small bug in binary-to-ascii, thanks to H. Peter Anvin of |
4714 | Transmeta. | |
4715 | ||
87784777 TL |
4716 | - There is a known problem with the DHCP server doing failover on |
4717 | Compaq Alpha systems. This patchlevel is not a release candidate | |
4718 | because of this bug. The bug should be straightforward to fix, so | |
4719 | a new release candidate is expected shortly. | |
4720 | ||
4721 | - There is a known problem in the DDNS update code that is probably a | |
4722 | bug, and is not, as far as we know, fixed in this patchlevel. | |
4723 | ||
6d779c72 TL |
4724 | Changes since 3.0 Beta 2 Patchlevel 24 |
4725 | ||
4726 | - Went over problematic failover state transitions and made them all | |
4727 | work, so that failover should now much less fragile. | |
4728 | ||
4729 | - Add some dhcpctl and omapi documentation | |
4730 | ||
4731 | - Fix compile errors when compiling with unusual predefines. | |
4732 | ||
4733 | - Make Token Ring work on Linux 2.4 | |
4734 | ||
4735 | - Fix the Digital Unix BPF_WORDALIGN bug. | |
4736 | ||
4737 | - Fix some dhcp client documentation errors. | |
4738 | ||
4739 | - Update some parts of the README file. | |
4740 | ||
4741 | - Support GCC on SCO. | |
4742 | ||
adbef119 | 4743 | Changes since 3.0 Beta 2 Patchlevel 23 |
de57e64b TL |
4744 | |
4745 | - Fix a bug in the DNS update code where a status code was not being | |
4746 | checked. This may have been causing core dumps. | |
4747 | ||
4748 | - When parsing the lease file, if a lease declaration includes a | |
4749 | billing class statement, and the lease already has a billing class, | |
4750 | unbill the old class. | |
4751 | ||
4752 | - When processing failover transactions, where acks will be deferred, | |
4753 | process the state transition immediately. | |
4754 | ||
4755 | - Don't try to use the new SIOCGIFCONF buffer size detection code on | |
4756 | Linux 2.0, which doesn't provide this functionality. | |
4757 | ||
4758 | - Apply a patch suggested by Tuan Uong for a problem in dlpi.c. | |
4759 | ||
4760 | - Fix a problem in using the which command in the configure script. | |
4761 | ||
4762 | - Fix a parse error in the client when setting up an omapi listener. | |
4763 | ||
4764 | - Document the -n and -g flags to the client. | |
4765 | ||
4766 | - Make sure there is always a stdin and stdout on startup. This | |
4767 | prevents shell scripts from accidentally writing error messages into | |
4768 | configuration files that happen to be opened as stderr. | |
4769 | ||
4770 | - If an interface is removed, the client will now notice that it is | |
4771 | gone rather than spinning. This has only been tested on NetBSD. | |
4772 | ||
4773 | - The client will attempt to get an address even if it can't create a | |
4774 | lease file. | |
4775 | ||
4776 | - Don't overwrite tracefiles. | |
4777 | ||
4778 | - Fix some memory allocation bugs in failover. | |
2aa36519 | 4779 | |
adbef119 | 4780 | Changes since 3.0 Beta 2 Patchlevel 22 |
140158d3 TL |
4781 | |
4782 | - Apply some patches suggested by Cyrille Lefevre, who is maintaining | |
4783 | the FreeBSD ISC DHCP Distribution port. | |
4784 | ||
4785 | - Fix a core dump in DHCPRELEASE. | |
4786 | ||
adbef119 | 4787 | Changes since 3.0 Beta 2 Patchlevel 21 |
3a395e60 TL |
4788 | |
4789 | - This time for sure: fix the spin described in the changes for pl20. | |
4790 | ||
adbef119 | 4791 | Changes since 3.0 Beta 2 Patchlevel 20 |
fc74dd0c TL |
4792 | |
4793 | - Fix a problem with Linux detecting large numbers of interfaces (Ben) | |
4794 | ||
4795 | - Fix a memory smash in the quotify code, which was introduced in | |
4796 | pl19. | |
4797 | ||
4798 | - Actually fix the spin described in the changes for pl20. The | |
4799 | previous fix only partially fixed the problem - enough to get it | |
4800 | past the regression test. | |
4801 | ||
adbef119 | 4802 | Changes since 3.0 Beta 2 Patchlevel 19 |
ed5ee591 TL |
4803 | |
4804 | - Fix a bug that could cause the server to abort if compiled with | |
4805 | POINTER_DEBUG enabled. | |
4806 | ||
4807 | - Fix a bug that could cause the server to spin when responding to a | |
4808 | DHCPREQUEST. | |
4809 | ||
4810 | - Apply Joost Mulders' suggested patches for DLPI on x86. | |
4811 | ||
4812 | - Support NUL characters in quoted strings. | |
4813 | ||
4814 | - Install unformatted man pages on SunOS. | |
4815 | ||
adbef119 | 4816 | Changes since 3.0 Beta 2 Patchlevel 18 |
b3fad8ac | 4817 | |
3350f5b7 TL |
4818 | - Allow the server to be placed in partner-down state using OMAPI. |
4819 | (Damien Neil) | |
4820 | ||
4821 | - Implement omshell, which can be used to do arbitrary things to the | |
4822 | server (in theory). (Damien Neil) | |
4823 | ||
4824 | - Fix a case where if a client had two different leases the server could | |
4825 | actually dereference the second one when it hadn't been referenced, | |
4826 | leading to memory corruption and a core dump. (James Brister) | |
4827 | ||
4828 | - Fix a case where a client could request the address of another client's | |
4829 | lease, but find_lease wouldn't detect that the other client had it, and | |
4830 | would attempt to allocate it to the client, resulting in a lease conflict | |
4831 | message. | |
4832 | ||
4833 | - Fix a case where a client with more than one client identifier could be | |
4834 | given a lease where the hardware address was correct but the client | |
4835 | identifier was not, resulting in a lease conflict message. | |
4836 | ||
98311e4b | 4837 | - Fix a problem where the server could write out a colon-separated |
3350f5b7 TL |
4838 | hex list as a value for a variable, which would then not parse. |
4839 | The fix is to always write strings as quoted strings, with any | |
4840 | non-printable characters quoted as octal escape sequences. So | |
4841 | a file written the old way still won't work, but new files written | |
4842 | this way will work. | |
4843 | ||
b3fad8ac TL |
4844 | - Fix documentation for sending non-standard options. |
4845 | ||
4846 | - Use unparsable names for unknown options. WARNING: this will | |
4847 | break any configuration files that use the option-nnn convention. | |
4848 | If you want to continue to use this convention for some options, | |
4849 | please be sure to write a definition, like this: | |
4850 | ||
4851 | option option-nnn code nnn = string; | |
4852 | ||
4853 | You can use a descriptive name instead of option-nnn if you like. | |
4854 | ||
4855 | - Fix a problem where we would see a DHCPDISCOVER/DHCPOFFER/ | |
4856 | DHCPREQUEST/DHCPACK/DHCPREQUEST/DHCPNAK sequence. This was the | |
4857 | result of a deceptively silly bug in supersede_lease. | |
4858 | ||
4859 | - Fix client script exit status check, according to a fix supplied by | |
4860 | Hermann Lauer. | |
4861 | ||
4862 | - Fix an endianness bug in the tracefile support, regarding ICMP | |
4863 | messages. | |
4864 | ||
3350f5b7 TL |
4865 | - Fix a bug in the client where the medium would not work correctly if |
4866 | it contained quoted strings. | |
4867 | ||
b3fad8ac TL |
4868 | ** there was no pl17 ** |
4869 | ||
adbef119 | 4870 | Changes since 3.0 Beta 2 Patchlevel 16 |
e6d30fd6 | 4871 | |
6da9db9d TL |
4872 | - Add support for transaction tracing. This allows the state of the |
4873 | DHCP server on startup, and all the subsequent transactions, to be | |
4874 | recorded in a file which can then be played back to reproduce the | |
4875 | behaviour of the DHCP server. This can be used to quickly | |
4876 | reproduce bugs that cause core dumps or corruption, and also for | |
4877 | tracking down memory leaks. | |
4878 | ||
4879 | - Incorporate some bug fixes provided by Joost Mulders for the DLPI | |
4880 | package which should clear up problems people have been seeing on | |
4881 | Solaris. | |
4882 | ||
4883 | - Fix bugs in the handling of options stored as linked lists (agent | |
4884 | options, fqdn options and nwip options) that could cause memory | |
4885 | corruption and core dumps. | |
4886 | ||
4887 | - Fix a bug in DHCPREQUEST handling that resulted in DHCPNAK messages | |
4888 | not being send in some cases when they were needed. | |
4889 | ||
4890 | - Make the lease structure somewhat more compact. | |
4891 | ||
4892 | - Make initial failover startup *much* faster. This was researched | |
4893 | and implemented by Damien Neil. | |
4894 | ||
4895 | - Add a --version flag to all executables, which prints the program | |
4896 | name and version to standard output. | |
4897 | ||
4898 | - Don't rewrite the lease file every thousand leases. | |
4899 | ||
e6d30fd6 TL |
4900 | - A bug in nit.c for older SunOS machines was fixed by a patch sent in |
4901 | by Takeshi Hagiwara. | |
4902 | ||
6da9db9d TL |
4903 | - Fix a memory corruption bug in the DHCP client. |
4904 | ||
4905 | - Lots of documentation updates. | |
4906 | ||
4907 | - Add a feature allowing environment variables to be passed to the | |
4908 | DHCP client script on the DHCP client command line. | |
4909 | ||
4910 | - Fix client medium support, which had been broken for some time. | |
4911 | ||
4912 | - Fix a bug in the DHCP client initial startup backoff interval, which | |
4913 | would cause two DHCPDISCOVERS to be sent back-to-back on startup. | |
4914 | ||
adbef119 | 4915 | Changes since 3.0 Beta 2 Patchlevel 15 |
af49fdff TL |
4916 | |
4917 | - Some documentation tweaks. | |
4918 | ||
4919 | - Maybe fix a problem in the DLPI code. | |
4920 | ||
4921 | - Fix some error code space inconsistencies in ddns update code. | |
4922 | ||
4923 | - Support relay agents that intercept unicast DHCP messages to stuff | |
4924 | agent options into them. | |
4925 | ||
4926 | - Fix a small memory leak in the relay agent option support code. | |
4927 | ||
c5b569f8 TL |
4928 | - Fix a core dump that would occur if a packet was sent with no |
4929 | options. | |
4930 | ||
adbef119 | 4931 | Changes since 3.0 Beta 2 Patchlevel 14 |
754ae3e9 TL |
4932 | |
4933 | - Finish fixing a long-standing bug in the agent options code. This | |
4934 | was causing core dumps and failing to operate correctly - in | |
4935 | particular, agent option stashing wasn't working. Agent option | |
4936 | stashing should now be working, meaning that agent options can be | |
4937 | used in class statements to control address allocation. | |
4938 | ||
4939 | - Fix up documentation. | |
4940 | ||
4941 | - Fix a couple of small memory leaks that would have added up | |
4942 | significantly in a high-demand situation. | |
4943 | ||
4944 | - Add a log-facility configuration parameter. | |
4945 | ||
4946 | - Fix a compile error on some older operating systems. | |
4947 | ||
4948 | - Add the ability in the client to execute certain statements before | |
4949 | transmitting packets to the server. Handy for debugging; not much | |
4950 | practical use otherwise. | |
4951 | ||
4952 | - Don't send faked-out giaddr when renewing or bound - again, useful | |
4953 | for debugging. | |
4954 | ||
adbef119 | 4955 | Changes since 3.0 Beta 2 Patchlevel 13 |
2f2e7960 TL |
4956 | |
4957 | - Fixed a problem where the fqdn decoder would sometimes try to store | |
4958 | an option with an (unsigned) negative length, resulting in a core | |
4959 | dump on some systems. | |
4960 | ||
4961 | - Work around the Win98 DHCP client, which NUL-terminates the FQDN | |
4962 | option. | |
4963 | ||
4964 | - Work around Win98 and Win2k clients that will claim they want to do | |
4965 | the update even when they don't have any way to do it. | |
4966 | ||
4967 | - Fix some log messages that can be printed when failover is operating | |
4968 | that were not printing enough information. | |
4969 | ||
4970 | - It was possible for a DHCPDISCOVER to get an allocation even when | |
4971 | the state machine said the server shouldn't be responding. | |
4972 | ||
4973 | - Don't load balance DHCPREQUESTs from clients in RENEWING and | |
4974 | REBINDING, since in RENEWING, if we heard it, it's for us, and in | |
4975 | REBINDING, the client wouldn't have got to REBINDING if its primary | |
4976 | were answering. | |
4977 | ||
4978 | - When we get a bogus state lease binding state transition, don't do | |
4979 | the transition. | |
9a111ee8 | 4980 | |
2f2e7960 | 4981 | |
adbef119 | 4982 | Changes since 3.0 Beta 2 Patchlevel 12 |
66e98927 TL |
4983 | |
4984 | - Fixed a couple of silly compile errors. | |
4985 | ||
a1e2e3d6 TL |
4986 | Changes since 3.0 Beta 2 Patchlevel 11 |
4987 | ||
4988 | - Albert Herranz tracked down and fixed a subtle bug in the base64 | |
4989 | decoder that would prevent any key with an 'x' in its base64 | |
4990 | representation from working correctly. | |
4991 | ||
4992 | - Thanks to Chris Cheney and Michael Sanders, we have a fix for the | |
4993 | hang that they both spotted in the DHCP server - when | |
4994 | one-lease-per-client was set, the code to release the "other" lease | |
4995 | could spin. | |
4996 | ||
4997 | - Fix a problem with alignment of the input buffer in bpf in cases | |
4998 | where two packets arrive in the same bpf read. | |
4999 | ||
5000 | - Fix a problem where the relay agent would crash if you specified an | |
5001 | interface name on the command line. | |
5002 | ||
5003 | - Add the ability to conditionalize client behaviour based on the | |
5004 | client state. | |
5005 | ||
5006 | - Add support for the FQDN option, and added support for a new way of | |
5007 | doing ddns updates (ddns update style interim) that allows more than | |
5008 | one DHCP server to update the DNS for the same network(s). This | |
5009 | was implemented by Damien Neil with some additional functionality | |
5010 | added by Ted Lemon. | |
5011 | ||
5012 | - Damien added a "log" statement, so that the configuration file can | |
5013 | be made to log debugging information and other information. | |
5014 | ||
5015 | - Fixed a bug that caused option buffers not to be terminated with an | |
5016 | end option. | |
5017 | ||
5018 | - Fixed a long-standing bug in the support for option spaces where the | |
5019 | options are stored as an ordered list rather than in a hash table, | |
5020 | which could theoretically result in memory pool corruption. | |
5021 | ||
5022 | - Prevent hardware declarations with no actual hardware address from | |
5023 | being written as something unparsable, and behave correctly in the | |
5024 | face of a null hardware address on input. | |
5025 | ||
5026 | - Allow key names to be FQDNs, and qualify the algorithm name if it is | |
5027 | specified unqualified. | |
5028 | ||
5029 | - Modify the DDNS update code so that it never prints the "resolver | |
5030 | failed" message, but instead says *why* the resolver failed. | |
5031 | ||
5032 | - Officially support the subnet selection option, which now has an | |
5033 | RFC. | |
5034 | ||
5035 | - Fix a build bug on MacOS X. | |
5036 | ||
5037 | - Allow administrator to disable ping checking. | |
5038 | ||
5039 | - Clean up dhcpd.conf documentation and add more information about how | |
5040 | it works. | |
5041 | ||
6c68ec36 TL |
5042 | Changes since 3.0 Beta 2 Patchlevel 10 |
5043 | ||
5044 | - Fix a bug introduced during debugging (!) and accidentally committed | |
5045 | to CVS. | |
5046 | ||
9fd337e7 TL |
5047 | Changes since 3.0 Beta 2 Patchlevel 9 |
5048 | ||
5049 | - Fix DHCP client handling of vendor encapsulated options. | |
5050 | ||
5051 | - Fix a bug in the handling of relay agent information options introduced | |
5052 | in patchlevel 9. | |
5053 | ||
5054 | - Stash agent options on client leases by default, and use the stashed | |
5055 | options at renewal time. | |
5056 | ||
5057 | - Add the ability to test the client's binding state in the client | |
5058 | configuration language. | |
5059 | ||
5060 | - Fix a core dump in the DNS update code. | |
5061 | ||
5062 | - Fix some expression evaluation bugs that were causing updates to be | |
5063 | done when no client hostname was received. | |
5064 | ||
5065 | - Fix expression evaluation debugging printfs. | |
5066 | ||
5067 | - Teach pretty_print_option to print options in option spaces other than | |
5068 | the DHCP option space. | |
5069 | ||
5070 | - Add a warning message if the RHS of a not is not boolean. | |
5071 | ||
5072 | - Never select for more than a day, because some implementations of | |
5073 | select will just fail if the timeout is too long (!). | |
5074 | ||
5075 | - Fix a case where a DHCPDISCOVER from an unknown network would be | |
5076 | silently dropped. | |
5077 | ||
5078 | - Fix a bug where if a client requested an IP address for which a different | |
5079 | client had the lease, the DHCP server would reallocate it anyway. | |
5080 | ||
5081 | - Fix the DNS update code so that if the client changes its name, the DNS | |
5082 | will be correctly updated. | |
5083 | ||
3922772a TL |
5084 | Changes since 3.0 Beta 2 Patchlevel 8 |
5085 | ||
5086 | - Oops, there was another subtle math error in the header-length | |
5087 | bounds-checking. | |
5088 | ||
5089 | Changes since 3.0 Beta 2 Patchlevel 7 | |
848c2547 TL |
5090 | |
5091 | - Oops, forgot to byte-swap udp header length before bounds-checking it. | |
5092 | ||
3922772a | 5093 | Changes since 3.0 Beta 2 Patchlevel 6 |
0f6045f8 | 5094 | |
f8572308 TL |
5095 | - Fix a possible DoS attack where a client could cause the checksummer |
5096 | to dump core. This was a read, not a write, so it shouldn't be | |
5097 | possible to exploit it any further than that. | |
5098 | ||
5099 | - Implement client- and server-side support for using the Client FQDN | |
5100 | option. | |
5101 | ||
5102 | - Support for other option spaces in the client has been added. This | |
5103 | means that it is now possible to define a vendor option space on the | |
5104 | client, request options in that space from the server (which must | |
5105 | define the same option space), and then use those options in the | |
5106 | client. This also allows NWIP and Client FQDN options to be used | |
5107 | meaningfully. | |
5108 | ||
5109 | - Add object initializer support. This means that objects can now be | |
5110 | initialized to something other than all-zeros when allocated, which | |
5111 | makes, e.g., the interface object support code a little more robust. | |
5112 | ||
5113 | - Fix an off-by-one bug in the host stuffer. This was causing host | |
5114 | deletes not the work, and may also have been causing OMAPI | |
5115 | connections to get dropped. Thanks to James Brister for tracking | |
5116 | this one down! | |
5117 | ||
5118 | - Fixed a core dump in the interface discovery code that is triggered | |
5119 | when there is no subnet declaration for an interface, but the server | |
5120 | decides to continue running. Thanks to Shane Kerr for tracking | |
5121 | down and fixing this problem. | |
5122 | ||
5123 | Changes since 3.0 Beta 2 Patchlevel 5 | |
5124 | ||
0f6045f8 TL |
5125 | - Fix a bug in the recent enhancement to the interface discovery code |
5126 | to support arbitrary-length interface lists. | |
5127 | ||
5128 | - Support NUL-terminated DHCP options when initializing client-script | |
5129 | environment. | |
5130 | ||
5131 | - Fix suffix operator. | |
5132 | ||
5133 | - Fix NetWare/IP option parsing. | |
5134 | ||
5135 | - Better error/status checking in dhcpctl initialization and omapi | |
5136 | connection code. | |
5137 | ||
5138 | - Fix a potential memory smash in dhcpctl code. | |
5139 | ||
5140 | - Fix SunOS4 and (maybe) Ultrix builds. | |
5141 | ||
5142 | - Fix a bug where a certain sort of incoming packet could cause a core | |
5143 | dump on Solaris (and probably elsewhere). | |
5144 | ||
5145 | - Add some more safety checks in error logging code. | |
5146 | ||
5147 | - Add support for ISC_R_INCOMPLETE in OMAPI protocol connection code. | |
5148 | ||
5149 | - Fix relay agent so that if an interface is specified on the command | |
5150 | line, the relay agent does not dump core. | |
5151 | ||
5152 | - Fix class matching so that match if can be combined with match or | |
5153 | spawn with. | |
5154 | ||
5155 | - Do not allow spurious leases in the lease database to introduce | |
5156 | potentially bogus leases into the in-memory database. | |
5157 | ||
5158 | - Fix a byte-order problem in the client hardware address type code | |
5159 | for OMAPI. | |
5160 | ||
5161 | - Be slightly less picky about what sort of hardware addresses OMAPI | |
5162 | can install in host declarations. | |
5163 | ||
801de092 TL |
5164 | Changes since 3.0 Beta 2 Patchlevel 4 |
5165 | ||
5166 | - Incorporated Peter Marschall's proposed change to array/record | |
5167 | parsing, which allows things like the slp-agent option to be encoded | |
5168 | correctly. Thanks very much to Peter for taking the initiative to | |
5169 | do this, and for doing such a careful job of it (e.g., updating the | |
5170 | comments)! | |
5171 | ||
5172 | - Added an encoding for the slp-agent option. :') | |
5173 | ||
6ed7a93d TL |
5174 | - Fixed SunOS 4 build. Thanks to Robert Elz for responding to my |
5175 | request for help on this with patches! | |
5176 | ||
5177 | - Incorporated a change that should fix a problem reported by Philippe | |
5178 | Jumelle where when the network connection between two servers is | |
5179 | lost, they never reconnect. | |
5180 | ||
5181 | - Fix client script files other than that for NetBSD to actually use | |
5182 | make_resolv_conf as documented in the manual page. | |
5183 | ||
5184 | - Fix a bug in the packet handling code that could result in a core | |
5185 | dump. | |
5186 | ||
5187 | - Fix a bug in the bootp code where responses on the local net would | |
5188 | be sent to the wrong MAC address. Thanks to Jerry Schave for | |
5189 | catching this one. | |
5190 | ||
490eb5e7 TL |
5191 | Changes since 3.0 Beta 2 Patchlevel 3 |
5192 | ||
5193 | - In the DHCP client, execute client statements prior to using the values | |
45d545f0 | 5194 | of options, so that the client configuration can overridden, e.g., the |
490eb5e7 TL |
5195 | lease renewal time. |
5196 | ||
5197 | - Fix a reference counting error that would result in very reproducible | |
5198 | failures in updates, as well as occasional core dumps, if a zone was | |
5199 | declared without a key. | |
5200 | ||
5201 | - Fix some Linux 2.0 compilation problems. | |
5202 | ||
5203 | - Fix a bug in scope evaluation during execution of "on" statements that | |
5204 | caused values not to be recorded on leases. | |
5205 | ||
5206 | - If the dhcp-max-message-size option is specified in scope, and the | |
5207 | client didn't send this option, use the one specified in scope to | |
5208 | determine the maximum size of the response. | |
5209 | ||
592d8153 TL |
5210 | Changes since 3.0 Beta 2 Patchlevel 2 |
5211 | ||
359b023e TL |
5212 | - Fix a case where spawning subclasses were being allocated |
5213 | incorrectly, resulting in a core dump. | |
5214 | ||
592d8153 TL |
5215 | - Fix a case where the DHCP server might inappropriately NAK a |
5216 | RENEWING client. | |
5217 | ||
5218 | - Fix a place dhcprequest() where static leases could leak. | |
5219 | ||
5220 | - Include memory.h in omapip_p.h so that we don't get warnings about | |
5221 | using memcmp(). | |
5222 | ||
2aa36519 TL |
5223 | Changes since 3.0 Beta 2 Patchlevel 1 |
5224 | ||
5225 | - Notice when SIOCFIGCONF returns more data than fit in the buffer - | |
5226 | allocate a larger buffer, and retry. Thanks to Greg Fausak for | |
5227 | pointing this out. | |
5228 | ||
5229 | - In the server, if no interfaces were configured, report an error and | |
5230 | exit. | |
5231 | ||
5232 | - Don't ever record a state of 'startup'. | |
5233 | ||
5234 | - Don't try to evaluate the local failover binding address if none was | |
5235 | specified. Thanks to Joseph Breu for finding this. |