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5ddbe8e4 | 1 | Internet Systems Consortium DHCP Distribution |
33dca28a TM |
2 | Version 4.3.4 |
3 | 29 March 2016 | |
72c7bd79 | 4 | |
5ddbe8e4 | 5 | Release Notes |
72c7bd79 | 6 | |
5ddbe8e4 | 7 | NEW FEATURES |
16449d9c | 8 | |
5ade3c84 | 9 | The major "theme" for ISC DHCP 4.3.x was to update the support for |
324257e3 SR |
10 | DHCPv6 to include several of the features that have been available |
11 | for DHCPv4. These include: | |
37ec5845 | 12 | |
324257e3 SR |
13 | - Support the use of classes |
14 | ||
15 | - Support for on_commit, on_expiry and on_release statements | |
16 | ||
4809ef5c | 17 | - Better logging of address assignments |
324257e3 SR |
18 | |
19 | - Support for using DHCPv6 relay options in expressions | |
20 | ||
cb0d7e7c | 21 | This release also adds support for the standard DDNS as described in the |
324257e3 SR |
22 | current RFCs as well as enhancing support for dynamically adding and removing |
23 | subclasses via OMAPI. | |
98bf1607 | 24 | |
01a54c17 EH |
25 | There are a number of DHCPv6 limitations and features missing in this |
26 | release, which will be addressed in the future: | |
98bd7ca0 | 27 | |
01a54c17 | 28 | - Only Solaris, Linux, FreeBSD, NetBSD, and OpenBSD are supported. |
3a16098f | 29 | |
adbef119 DH |
30 | - DHCPv6 includes human-readable text in status code messages, in |
31 | English. A method to reconfigure or support other languages would | |
80778e94 | 32 | be preferable. |
98bd7ca0 DH |
33 | |
34 | - The "host-identifier" option is limited to a simple token. | |
35 | ||
98bd7ca0 | 36 | - The client and server can only operate DHCPv4 or DHCPv6 at a time, |
45d545f0 | 37 | not both. To use both protocols simultaneously, two instances of the |
6de1f33e | 38 | relevant daemon are required, one with the '-6' command line option. |
4ff4053b | 39 | |
01a54c17 EH |
40 | For information on how to install, configure and run this software, as |
41 | well as how to find documentation and report bugs, please consult the | |
42 | README file. | |
ca4606b5 | 43 | |
01a54c17 EH |
44 | ISC DHCP uses standard GNU configure for installation. Please review the |
45 | output of "./configure --help" to see what options are available. | |
fe5b0fdd | 46 | |
01a54c17 EH |
47 | The system has only been tested on Linux, FreeBSD, and Solaris, and may not |
48 | work on other platforms. Please report any problems and suggested fixes to | |
49 | <dhcp-users@isc.org>. | |
98bd7ca0 | 50 | |
fef8c6f0 SR |
51 | ISC DHCP is open source software maintained by Internet Systems |
52 | Consortium. This product includes cryptographic software written | |
53 | by Eric Young (eay@cryptsoft.com). | |
54 | ||
1e08558f SR |
55 | Changes since 4.3.4 |
56 | ||
914c567d FD |
57 | - Fixed util/bindvar.sh error handling. |
58 | [ISC-Bugs #41973] | |
1e08558f | 59 | |
0b0a1399 SR |
60 | - Correct error message in relay to use remote id length instead |
61 | of circuit id length. | |
62 | [ISC-Bugs #42556] | |
63 | ||
e105afa1 SR |
64 | - Add support for including an encapsulated option in a response |
65 | from the DHCPv6 server. This allows the v6 FQDN option to be | |
66 | returned in responses. | |
67 | [ISC-Bugs #29246] | |
68 | ||
4f553fea TM |
69 | - Add logic to test directory Makefiles to avoid copying Attfile(s) |
70 | when building within the source tree. This eliminates a noisy but | |
71 | otherwise harmless error message when running "make check". | |
72 | [ISC-Bugs #41883] | |
73 | ||
33dca28a TM |
74 | Changes since 4.3.4b1 |
75 | ||
76 | - None | |
77 | ||
7da1ac2b TM |
78 | Changes since 4.3.3 |
79 | ||
555093da TM |
80 | - Corrected a static analyzer warning in common/execute.c |
81 | [ISC-Bugs #40374] | |
e82906fc | 82 | |
555093da TM |
83 | - ISC DHCP now follows the common convention to use the base name a |
84 | program is invoked with (aka argv[0], vs. a builtin name) for | |
cb0d7e7c | 85 | logs. This should help differentiate syslog entries for DHCPv4 and |
555093da TM |
86 | DHCPv6 servers. You can define OLD_LOG_NAME in includes/site.h to |
87 | keep the previous behavior. | |
88 | [ISC-Bugs #38692] | |
20931f53 | 89 | |
26de50fb | 90 | - The Linux packet filter code now correctly treats only the least significant |
c808603e | 91 | 12 bits in an inbound packet's TCI value as the VLAN id (per IEEE 802.1Q). |
555093da TM |
92 | Prior to this it was using the entire 16 bit value as the VLAN id and |
93 | incorrectly discarding packets. Thanks to Jiri Popelka at Red Hat for | |
94 | reporting this issue and supplying its patch. | |
95 | [ISC-Bugs #40591] | |
5cc6f201 | 96 | |
c808603e | 97 | - Fixed several static analysis issues such as potential null |
e8e6768a TM |
98 | references, unchecked strdup returns. Thanks to Bill Parker (wp02855 at |
99 | gmail dot com) who identified these issues and supplied patches to | |
100 | address them. | |
88c3ff5d | 101 | [ISC-Bugs #40754] |
e8e6768a | 102 | [ISC-Bugs #40823] |
88c3ff5d | 103 | |
555093da TM |
104 | - Corrected compilation errors that prohibited building the server |
105 | and its ATF unit tests when failover is disabled. | |
106 | [ISC-Bugs #40372] | |
f10cbbfa | 107 | |
555093da TM |
108 | - Added the lease address to the end of the debug level log message |
109 | emitted when an existing lease is renewed within the dhcp-cache-threshold. | |
110 | Thanks to Nathan Neulinger at Missouri S&T for suggesting the change. | |
111 | [ISC-Bugs #40598] | |
5fc79cfd | 112 | |
555093da TM |
113 | - Added dhcpv6 and delayed-ack to settings listed in the "Features:" |
114 | section of the configure script output. Additionally, all of the | |
115 | features reported on will now always show either a "yes" or "no" | |
116 | value. Prior to this features left to their default setting would | |
117 | not show a value. | |
118 | [ISC-Bugs #40381] | |
119 | ||
120 | - Added a parameter, authoring-byte-order, to the lease file. This value | |
121 | is automatically added to the top of new lease files by the server and | |
122 | indicates the internal byte order (big endian or little endian) of the | |
123 | server. This permits lease files generated on a server with one form of | |
124 | byte order to be used on a server with the opposite form. Our thanks to | |
125 | Timothe Litt for calling this to our attention and for the suggestions | |
126 | he provided. | |
127 | [ISC-Bugs #38396] | |
646acb59 | 128 | |
d1d1da8f | 129 | - Fixed a small memory leak in the DHCPv6 version of the client code. |
18ba0ff3 SR |
130 | This is unlikely to cause significant issues in actual use. |
131 | [ISC-Bugs #40990] | |
132 | ||
ce29e695 TM |
133 | - Corrected a few minor memory leaks in omapi's dereferencing of |
134 | host objects. Thanks to Jiri Popelka at Red Hat for reporting | |
135 | the issue and supplying the patches. | |
136 | [ISC-Bugs #33990] | |
75ab52e1 | 137 | [ISC-Bugs #41325] |
ce29e695 | 138 | |
d1d1da8f FD |
139 | - Cleaned up some of the Make infrastructure to make --with-libbind |
140 | work better. Though it still only works with an absolute path. | |
141 | [ISC-Bugs #39210] | |
142 | ||
143 | - Made the embedded bind libraries able to be cross compiled | |
144 | (please refer to the bind9 documentation to learn how to cross | |
145 | compile DHCP and its bind library dependency). | |
146 | [ISC-Bugs #38836] | |
147 | ||
c88dfebd SR |
148 | - Update the client code to better support getting IA_NAs and IA_PDs |
149 | in the same packet, see RFC7550 for some discussion. | |
150 | [ISC-Bugs #40190] | |
151 | ||
08ad1e3c | 152 | ! Update the bounds checking when receiving a packet. |
4ce21cb6 SR |
153 | Thanks to Sebastian Poehn from Sophos for the bug report and a suggested |
154 | patch. | |
155 | [ISC-Bugs #41267] | |
825c459c | 156 | CVE: CVE-2015-8605 |
4ce21cb6 | 157 | |
b2cb745b SR |
158 | - When handling an incorrect command line for dhcpd, dhclient or dhcrelay |
159 | print out a specific error message about the first error in addition | |
160 | to the usage string. This may be disabled by editing includes/site.h. | |
161 | [ISC-Bugs #40321] | |
eda1d0aa | 162 | [ISC-Bugs #41454] |
b2cb745b | 163 | |
cacce092 TM |
164 | - The configure script will now exit with an error message if it cannot find |
165 | a GNU-style make tool (needed when building BIND libraries) or pkg-config | |
166 | (needed to locate ATF used for building unit tests). Prior to this the | |
167 | script would exit indicating success causing subsequent attempts to build | |
168 | the software to fail. | |
169 | [ISC-Bugs #40371] | |
170 | ||
4ced250f | 171 | - Properly terminate strings before passing them to regex and fix |
c808603e | 172 | a boundary error when creating certain new data strings. |
4ced250f SR |
173 | Thanks to Andrey Jr. Melnikov for the bug report. |
174 | [ISC-Bugs #41217] | |
175 | ||
a3471269 TM |
176 | - Option expressions, such as prepend and append, are now supported when |
177 | running dhclient for IPv6. Prior to this such statements in the | |
178 | client configuration file would be parsed but have no affect. Thanks | |
179 | to Jiri Popelka at Red Hat for reporting the issue. | |
180 | [ISC-Bugs #39952] | |
181 | ||
3e3b5257 TM |
182 | - A failover primary server will now accept a binding status update from the |
183 | secondary which transitions a lease from ACTIVE to ABANDONED. This accounts | |
184 | for instances in which a client declines a lease and only the secondary | |
185 | server receives it. Prior to this the primary server would reject such an | |
186 | update as an "invalid state transition". | |
fd1ba363 | 187 | [ISC_BUGS #25189] |
3e3b5257 | 188 | |
ba4c704d SR |
189 | - Properly allocate memory for a bpf filter. |
190 | Thanks to Bill Parker (wp02855 at gmail dot com) who identified this issue. | |
191 | [ISC-Bugs #41485] | |
192 | ||
b1eea858 SR |
193 | - Updated contrib/dhcp-lease-list.pl to handle garbage in the oui file better |
194 | and to print out the hostnames a bit better. | |
0958dea4 | 195 | Thanks to Antoine Beaupré from Debian for the suggested patch. |
b1eea858 SR |
196 | [ISC-Bugs #41288] |
197 | ||
36c4a037 SR |
198 | - The DHCPv6 server now handles long valid and preferred lease times better. |
199 | Values that would cause the internal end time of the lease to wrap are | |
200 | modified to work as infinite. | |
201 | [ISC-Bugs #40773] | |
202 | ||
41b5a1a6 FD |
203 | - Updated support for cross compiling by allowing the library archiver |
204 | to be set at configure time via the environment variable 'AR'. | |
205 | [ISC-Bugs #41536] | |
206 | ||
62a9eb91 TM |
207 | - The server will now match DHCPv6 relayed clients to host declarations |
208 | which include the "hardware" statement, if the relay connected to the | |
209 | client supplies the client's hardware address via client-linklayer-address | |
210 | option as per RFC 6939. | |
211 | [ISC-Bugs #40334] | |
212 | ||
b7311aae FD |
213 | - Allow a filename to be specified instead of /dev/random during |
214 | configuration. This is passed to the BIND configuration to allow | |
215 | for cross compilation. | |
216 | [ISC-Bugs #33835] | |
217 | ||
1bfdeaae SR |
218 | - Add more option definitions. |
219 | [ISC-Bugs #40562] | |
220 | ||
1d3fc4d0 SR |
221 | - Correct outputting of long lines in the lease file when writing |
222 | a lease that includes long strings in an execute statement. | |
223 | [ISC-Bugs #40994] | |
224 | ||
68b5d395 TM |
225 | - The server will now correctly treat a lease as reserved when the client |
226 | requests an infinite lease time (i.e. OxFFFFFFFF) and "infinite-is-reserved" | |
227 | is enabled. Prior to this the server would halt. In addition, corrections | |
228 | were made to the server to allow a lease's flags field to be set via omapi. | |
229 | Prior to this, the server, depending on the host architecture, would | |
230 | incorrectly parse the new flags value from the omapi message. | |
231 | [ISC-Bugs #31179] | |
232 | ||
f704712e FD |
233 | - ISC DHCP can now be configured and built from a directory other than |
234 | the top level source directory. Note that "make distcheck" uses this | |
235 | feature. | |
236 | [ISC-Bugs #39262] | |
237 | ||
6e7e6637 | 238 | - Add support for RFC 3527 to dhcrelay. A new, dhcrelay command line argument, |
b12e0ca9 | 239 | "-U <interface>" enables the addition of a RFC 3527 compliant link selection |
6e7e6637 TM |
240 | suboption to the agent option added for clients directly connected to the |
241 | relay. | |
242 | [ISC-Bugs #34875] | |
cbef159e | 243 | [ISC-Bugs #41708] |
6e7e6637 | 244 | |
dce576b8 TM |
245 | - Add a new global DHCPv6 option, dhcpv6-set-tee-times, which when enabled |
246 | instructs the server to calculate T1 and T2 as recommended in RFC 3315, | |
247 | Section 22.4. | |
248 | [ISC-Bugs #25687] | |
249 | ||
45086eef TM |
250 | - Corrected minor Coverity issues. |
251 | [ISC-Bugs #35144] | |
252 | ||
785c1a51 FD |
253 | - Add support for RFC 7341 DHCPv4 over DHCPv6 with a new configuration |
254 | option "--enable-dhcpv4o6". Note this feature requires DHCPv6 support | |
255 | and is not compatible with delayed-ack. Both client and server use 2 | |
256 | processes which communicate over UDP on a pair of sockets. The new | |
cb0d7e7c | 257 | "-4o6 <port>" command line argument enables DHCPv4 over DHCPv6 support |
785c1a51 FD |
258 | and specifies the consecutive ports to use for inter-process communication. |
259 | Please look at doc/DHCPv4-over-DHCPv6 for more details. | |
260 | [ISC-Bugs #35711] | |
261 | ||
cc1bd34e | 262 | - Correct interface name formation when using DLPI under Solaris 11. As of |
0f1a34e9 TM |
263 | Solaris 11, ethernet device files are located in "/dev/net". The configure |
264 | script has been modified to detect this situation and adjust the directory | |
9b2e9347 TM |
265 | used accordingly. Thanks to Jarkko Torppa for reporting this issue and |
266 | submitting a patch | |
0f1a34e9 | 267 | [ISC-Bugs #37954] |
fca944db | 268 | [ISC-Bugs #40752] |
0f1a34e9 | 269 | |
84ee63a0 SR |
270 | - Add a dereference call when handling an error condition while |
271 | decoding a packet. | |
272 | [ISC-Bugs #41774] | |
273 | ||
cc1bd34e TM |
274 | - Add a new parameter, lease-id-format, to both dhcpd and dhclient. The |
275 | parameter controls the format in which certain values are written to lease | |
276 | files. Formats supported are octal - quoted string containing octal | |
34a09be0 TM |
277 | escapes, and hex - unquoted, colon separated hex digits. Thanks to |
278 | Jay Ford, University of Iowa for bringing the issue to our attention. | |
29d1b58f | 279 | [ISC-Bugs #26378] |
cc1bd34e | 280 | |
0b209ea5 SR |
281 | ! Add an option in site.h to limit the number of failover and control |
282 | connections the server will accept. By default this is 200. | |
283 | [ISC-Bugs #41845] | |
670599ac | 284 | CVE: CVE-2016-2774 |
0b209ea5 | 285 | |
7da1ac2b | 286 | Changes since 4.3.3b1 |
ba4c704d | 287 | |
5fc79cfd TM |
288 | - None |
289 | ||
b31fe1d5 TM |
290 | Changes since 4.3.2 |
291 | ||
bc549dd9 SR |
292 | - The server now does a better check to see if it can allocate the memory |
293 | for large blocks of v4 leases and should provide a slightly better error | |
294 | message. Note well: the server pre-allocates v4 addresses, if you use | |
295 | a large range, such as a /8, the server will attempt to use a large | |
296 | amount of memory and may not start if there either isn't enough memory | |
297 | or the size exceeds what the code supports. | |
298 | [ISC-Bugs #38637] | |
299 | ||
b31fe1d5 TM |
300 | - The server will now reject unicast Request, Renew, Decline, and Release |
301 | messages from a client unless the server would have sent that client the | |
302 | dhcp6.unicast option. This behavior is in compliance with paragraph 1 in | |
303 | each of the sections 18.2,1, 18.2.3, 18.2.6, and 18.2.7 of RFC 3315. Prior | |
304 | to this, the server would simply accept the messages. Now, in order for | |
305 | the server to accept such a message, the server configuration must include | |
306 | the dhcp6.unicast option either globally or within the shared network to | |
307 | which the requested lease belongs. In other words, the server will map | |
308 | the first IA_XX address found within the client message to a shared-network | |
309 | and look for the presence of the unicast option there and then globally. | |
ba21bb1b TM |
310 | Thanks to Jiri Popelka at Red Hat for this issue and his patch which |
311 | inspired the fix. | |
b31fe1d5 | 312 | [ISC-Bugs #21235] |
c2419dca | 313 | |
20c0fdc7 SR |
314 | - The ATF (Automated Testing Framework) tools used for optional unit tests |
315 | can now be built from its embedded sources in bind, solving the | |
316 | atf-run / atf-report issue with recent (>= 0.20) versions of ATF. | |
317 | The new configuration option is "./configure --with-atf=bind". | |
1b245c91 | 318 | [ISC-Bugs #38754, #39300] |
20c0fdc7 | 319 | |
1c0b7d66 SR |
320 | - Corrected a compilation error introduced by the fix for ISC-Bugs #22806. |
321 | On older linuxes that do not include the tpacket_auxdata structure don't | |
322 | bother allocating the cmsgbuf as it isn't necessary and we don't have | |
323 | a proper length for it. | |
324 | [ISC-Bugs #39209] | |
325 | ||
da88d34b SR |
326 | - Remove the dst directory. This was replaced in 4.2.0 with the dst |
327 | code from the Bind libraries but we continued to include it for | |
328 | backwards compatibility. As we have now released 4.3.x it seems | |
329 | reasonable to remove it. | |
330 | [ISC-Buts #39019] | |
331 | ||
90a062fb | 332 | - Write out the DUID server id on startup in all cases, previously if it |
cacce092 | 333 | was read in from server-duid option in the config or lease files for |
90a062fb SR |
334 | DHCPv4 it would not be written to the new lease file. |
335 | [ISC-Bugs #37791] | |
336 | ||
90fdd337 SR |
337 | - When parsing dates for leases convert dates past 2038 to "never". |
338 | This avoids problems with integer overflows in the date and time | |
339 | handling code for people that decide to use very large lease times | |
340 | or add a lease entry with a date far in the future. | |
341 | [ISC-Bugs #33056] | |
342 | ||
70689a73 SR |
343 | - Leave the siaddr field clear when sending a NACK as per RFC 2131 |
344 | table 3. | |
345 | [ISC-Bugs #38769] | |
346 | ||
30dcfbf6 SR |
347 | - In the client don't send expired addresses to the script as part of |
348 | the binding process. Thanks to Sven Trenkel at Google for reporting | |
349 | the issue and suggesting the patch. | |
350 | [ISC-Bugs #38631] | |
351 | ||
4136513e SR |
352 | - While parsing IPv6 addresses treat "add" as part of the address instead |
353 | of as a token. | |
354 | [ISC-Bugs #39529] | |
355 | ||
3933e2aa SR |
356 | - Add support for accessing the v4 lease queues (active, free etc) in a |
357 | binary fashion instead of needing to walk through a linear list to | |
358 | insert, find or remove an entry from the queues. In addition add a | |
359 | compile time option "--enable-binary-leases" to enable the new code | |
360 | or to continue using the old code. The old code is the default. | |
361 | Thanks to Fernando Soto from BlueCat Networks for the patch. | |
362 | [ISC-Bugs #39078] | |
363 | ||
cca6a648 | 364 | - Delayed-ack now works properly with Failover. Prior to this, bind updates |
365 | post startup were being queued but never delivered. Among other things, this | |
366 | was causing leases to not transition from expired or released to free. | |
367 | [ISC-Bugs #31474] | |
368 | ||
46d31b51 SR |
369 | - Clean up parsing of v6 lease files a bit to avoid infinite loops if the |
370 | lease file is corrupt in certain ways. | |
371 | [ISC-Bugs #39760] | |
372 | ||
cca6a648 | 373 | - Corrected a crash in dhclient that occurs during lease renewal if the |
68b3e7f2 TM |
374 | client is performing its own DNS updates. Thanks to Jiri Popelka at Red Hat |
375 | for the bug report. | |
cca6a648 | 376 | [ISC-Bugs #38639] |
377 | ||
ff1b3d04 TM |
378 | - Corrected an issue in v6 lease file parsing. Prior to this, when encountering |
379 | a lease with an address for which no configured pool exists, the server was | |
380 | declaring the lease file corrupt and incorrectly skipping over the subsequent | |
381 | entry in the file. The server will now emit a log message indicating that | |
382 | no pool was found for the address (or prefix) and correctly resume parsing | |
cacce092 | 383 | with the next entry in the lease file. Our thanks to Michal Žejdl for |
673137b1 | 384 | reporting the issue. |
ff1b3d04 TM |
385 | [ISC-Bugs #39314] |
386 | ||
34711bb7 SR |
387 | - Be more liberal in finding a subnet group associated with a static |
388 | prefix. When we added the class matching code for v6 we also added | |
389 | a requirement that the static prefix must be within a subnet the | |
390 | client was in, in order to find the proper statements. We now | |
391 | look for a subnet based on the prefix, failing that on the static | |
392 | address for the client and failing that on the shared network | |
393 | itself. | |
394 | [ISC-Bugs #38329] | |
395 | ||
45c332f0 SR |
396 | - Add a new action expression "parse_vendor_options", which can be used |
397 | to parse a vendor-encapsualted-option received by the server based on | |
398 | the encoding specified by the vendor-option-space statement. | |
399 | [ISC-Bugs #36449] | |
400 | ||
7a6c9368 SR |
401 | - Enhance the PARANOIA patch to include fchown() the lease file to |
402 | allow it to be manipulated after the server does a chown(). | |
403 | Thanks to Jiri Popelka at Red Hat for the patch. | |
404 | [ISC-Bugs #36978] | |
405 | ||
7ef55702 SR |
406 | - Relax the requirement that prefix pools must be within the subnet. |
407 | This was added in as part of #32453 in order to avoid configuration | |
408 | mistakes but is being removed as prefixes aren't required to be | |
409 | within the same subnet and many people configure them in that fashion. | |
410 | [ISC-Bugs #40077] | |
411 | ||
6a39bcf0 TM |
412 | - Fixed a server crash that could occur when the server attempts to remove |
413 | the billing class from the last lease billed to a dynamic class after said | |
6c8eb544 TM |
414 | class has been deleted. Our thanks to Lasse Pesonen for reporting the |
415 | issue. | |
6a39bcf0 TM |
416 | [ISC-Bugs #39978] |
417 | ||
743d6937 TM |
418 | - LDAP Patches - Numerous small patches submitted by contributors have |
419 | been applied to the contributed code which supplies LDAP support. | |
af25ded3 SR |
420 | In addition, two larger submissions have also been included. The |
421 | first adds support for IPv6 configuration and the second provides | |
35b6560b TM |
422 | GSSAPI authentication. We would like to thank the following for their |
423 | contributions (alphabetically): | |
424 | Alex Novak at SUSE | |
db48f927 | 425 | Bill Parker (wp02855 at gmail dot com) |
35b6560b TM |
426 | Jiri Popelka at Red Hat |
427 | Marius Tomaschewski at SUSE | |
405fccfc | 428 | (william at adelaide.edu.au), The University of Adelaide |
743d6937 TM |
429 | [ISC-Bugs #39056] |
430 | [ISC-Bugs #22742] | |
431 | [ISC-Bugs #24449] | |
432 | [ISC-Bugs #28545] | |
433 | [ISC-Bugs #29873] | |
434 | [ISC-Bugs #30183] | |
435 | [ISC-Bugs #30402] | |
436 | [ISC-Bugs #32217] | |
437 | [ISC-Bugs #32240] | |
438 | [ISC-Bugs #33176] | |
439 | [ISC-Bugs #33178] | |
440 | [ISC-Bugs #36409] | |
441 | [ISC-Bugs #36774] | |
442 | [ISC-Bugs #37876] | |
443 | ||
af25ded3 | 444 | - Handle an out of memory condition in the client a bit better. |
5bc0a4e1 SR |
445 | Thanks to Frédéric Perrin from Brocade for finding the issue |
446 | and suggesting a patch. | |
2932b357 | 447 | [ISC-Bugs #39279] |
af25ded3 | 448 | |
b31fe1d5 | 449 | Changes since 4.3.2rc2 |
c2419dca SR |
450 | - None |
451 | ||
452 | Changes since 4.3.2rc1 | |
75d02fcf TM |
453 | |
454 | - Corrected a compilation error introduced by the fix for ISC-Bugs #37415. | |
455 | The error occurs on Linux variants that do not support VLAN tag information | |
456 | in packet auxiliary data. The configure script now only enables inclusion | |
457 | of the VLAN tag-based logic if it is supported by the underlying OS. | |
458 | [ISC-Bugs #38677] | |
459 | ||
45adf35c | 460 | Changes since 4.3.2b1 |
4d9b81fc | 461 | |
45adf35c | 462 | - Specifying the option, --disable-debug, on the configure script command line |
4e1bf548 | 463 | now disables debug features. Prior to this, specifying --disable-debug |
112d76f6 TM |
464 | incorrectly enabled debug features. Thanks to Gustavo Zacarias for reporting |
465 | the issue. | |
4e1bf548 | 466 | [ISC-Bugs #37780] |
4d9b81fc | 467 | |
9a111ee8 TM |
468 | - Unit test execution now uses a path augmented during configuration |
469 | processing of the --with-atf option to locate ATF runtime tools, atf-run | |
470 | and atf-report. For most installations of ATF, this should alleviate the | |
471 | need to manually include them in the PATH, as was formerly required. | |
472 | If the configure script cannot locate the tools it will emit a warning, | |
473 | informing the user that the tools must be in the PATH when running unit | |
474 | tests. | |
475 | Secondly, please note that "make check" will now exit with a failure status | |
476 | code (non-zero) if one or more unit tests fail. This means that invoking | |
477 | "make check" from an upper level directory will cause the make process to | |
478 | STOP after the first test subdirectory with failed test(s). To force all | |
479 | tests in all subdirectories to run, regardless of individual test outcome, | |
480 | use the command "make -k check". | |
481 | [ISC-Bugs #38619] | |
482 | ||
36e2c224 | 483 | Changes since 4.3.1 |
906ec9a7 | 484 | |
71d7e9aa TM |
485 | - Corrected parser's right brace matching when a statement contains an error. |
486 | [ISC-Bugs #36021] | |
487 | ||
3ffc07de | 488 | - TSIG-authenticated dynamic DNS updates now support the use of these |
267a248d TM |
489 | additional algorithms: hmac-sha1, hmac-sha224, hmac-sha256, hmac-sha384, |
490 | and hmac-sha512 | |
3ffc07de TM |
491 | [ISC-Bugs #36947] |
492 | ||
fa54ba10 | 493 | - Added check for invalid failover message type. Thanks to Tobias Stoeckmann |
45adf35c | 494 | working with the OpenBSD project who spotted the issue and provided the |
fa54ba10 | 495 | patch. |
e1b18c69 TM |
496 | [ISC-Bugs #36653] |
497 | ||
fa54ba10 | 498 | - Corrected rate limiting checks for bad packet logging. Thanks to Tobias |
45adf35c | 499 | Stoeckmann working with the OpenBSD project who spotted the issue and |
fa54ba10 | 500 | provided the patch. |
0ce1aa94 TM |
501 | [ISC-Bugs #36897] |
502 | ||
3956569b TM |
503 | - Log statements depicting what files will be used by the server now occur |
504 | after the configuration file has been processed. | |
505 | [ISC-Bugs #36671] | |
506 | ||
36e2c224 | 507 | - Addressed Coverity issues reported as of 07-31-2014: |
6444928c | 508 | [ISC-Bugs #36712] Corrects Coverity reported "high" impact issues. |
c7c11ea1 | 509 | [ISC-Bugs #36933] Corrects Coverity reported "medium" impact issues |
6444928c TM |
510 | [ISC-Bugs #37708] Fixes compilation error in dst_api.c seen in older |
511 | compilers that was introduced by #36712 | |
906ec9a7 | 512 | |
2a537542 TM |
513 | - Server now supports a failover split value of 256. |
514 | [ISC-Bugs] #36664] | |
515 | ||
1dceab6c SR |
516 | - Remove unneeded error #defines. These defines were included in case |
517 | external programs required the older versions of the macro. They | |
518 | have been #ifdeffed for now and will be removed at a future date. | |
519 | See site.h for the #define to include them again, but you should | |
520 | switch to using the DHCP_R_* versions instead of the ISC_R_* versions. | |
adb95d23 | 521 | Also ISC_R_MULTIPLE has been removed as it is also defined in bind. |
1dceab6c SR |
522 | [ISC-Bugs #37128] |
523 | ||
bd49432f | 524 | - Added checks in range6 and prefix6 statement parsing to ensure addresses |
b3b69c1c TM |
525 | are within the declared subnet. Thanks to Jiri Popelka at Red Hat for the |
526 | bug report and patch. | |
bd49432f | 527 | [ISC-Bugs #32453] |
7ff6ae5a TM |
528 | [ISC-Bugs #17766] |
529 | [ISC-Bugs #18510] | |
530 | [ISC-Bugs #23698] | |
531 | [ISC-Bugs #28883] | |
532 | ||
533 | - Addressed checksum issues: | |
534 | Added checksum readiness check to Linux packet filtering which eliminates | |
535 | invalid packet drops due to checksum errors when checksum offloading is | |
536 | in use. Based on dhcp-4.2.2-xen-checksum.patch made to the Fedora project. | |
537 | [ISC-Bugs #22806] | |
538 | [ISC-Bugs #15902] | |
539 | [ISC-Bugs #17739] | |
540 | [ISC-Bugs #18010] | |
541 | [ISC-Bugs #22556] | |
542 | [ISC-Bugs #29769] | |
45adf35c | 543 | Inbound packets with UDP checksums of 0xffff now validate correctly rather |
7ff6ae5a | 544 | than being dropped. |
e046c826 TM |
545 | [ISC-Bugs #24216] |
546 | [ISC-Bugs #25587] | |
547 | ||
548 | - Added the echo-client-id configuration parameter to the server configuration. | |
549 | The server now supports RFC 6842 compliant behavior by setting a new | |
550 | configuration parameter, echo-client-id. When enabled, the server will | |
551 | include the client identifier option (Option code 61) if received, in its | |
552 | responses. The server identifier returned in NAKs (if enabled) will now | |
553 | be the globally defined value (if one) if the server cannot attribute the | |
554 | inbound request to a known subnet. | |
f542e92b SR |
555 | [ISC-Bugs #35958] |
556 | [ISC-Bugs #32545] | |
bd49432f | 557 | |
0a7e1a8a TM |
558 | - Added support of the configuration parameter, use-host-decl-names, to |
559 | BOOTP request handling. | |
560 | [ISC-Bugs #36233] | |
561 | ||
6067cd48 TM |
562 | - Added logic to ignore the signal, SIGPIPE, which ensures write failures |
563 | will be delivered as errors rather than as SIGPIPE signals on all OSs. | |
564 | Thanks to Marius Tomaschewski from SUSE who reported the issue and provided | |
565 | the patch upon which the fix is based. | |
566 | [ISC-Bugs #32222] | |
567 | ||
21d30347 SR |
568 | - In the failover code, handle the case of communications being interrupted |
569 | when the servers are dealing with POTENTIAL-CONFLICT. This patch allows | |
570 | the primary to accept the secondary moving from POTENTIAL-CONFLICT to | |
571 | RESOLUTION-INTERRUPTED as well as handling the bind update process better. | |
572 | In addition the code to resend update or update all requests has been | |
573 | modified to send requests more often. | |
574 | [ISC-Bugs #36810] | |
575 | [ISC-Bugs #20352] | |
576 | ||
d9b2a590 TM |
577 | - By default, the server will now choose the value to use in the forward DNS |
578 | name from the following in order of preference: | |
579 | ||
580 | 1. FQDN option if provided by the client | |
581 | 2. Host name option if provided by the client | |
582 | 3. Configured option host-name if defined | |
583 | ||
584 | As before, this may be overridden by defining ddns-hostname to the desired | |
585 | value (or expression). In addition, the server logic has been extended to | |
586 | use the value of the host name declaration if use-host-decl-names is enabled | |
587 | and no other value is available. | |
588 | [ISC-Bugs #21323] | |
589 | ||
f3a44c10 TM |
590 | - DNS updates were being attempted when dhcp-cache-threshold enabled the use of |
591 | the existing lease and the forward DNS name had not changed. This has been | |
592 | corrected. | |
593 | [ISC-Bugs #37368] | |
59990751 | 594 | [ISC-Bugs #38686] |
f3a44c10 | 595 | |
04daf4fe | 596 | - Corrected an issue which caused dhclient to incorrectly form the result when |
45adf35c | 597 | prepending or appending to the IPv4 domain-search option, received from the |
04daf4fe TM |
598 | server, when either of the values being combined contain compressed |
599 | components. | |
600 | [ISC-Bugs #20558] | |
601 | ||
7116a34f TM |
602 | - Added the server-id-check parameter to the server configuration. |
603 | This parameter allows run-time control over whether or not a server, | |
604 | participating in failover, verifies the dhcp-server-identifier option in | |
ebb1d91e | 605 | DHCP REQUESTs against the server's id before processing the request. |
7116a34f TM |
606 | Formerly, enabling this behavior was done at compilation time through |
607 | the use of the #define, SERVER_ID_CHECK, which has been removed from site.h | |
adb95d23 | 608 | The functionality is now only available through the new runtime parameter. |
7116a34f TM |
609 | [ISC-Bugs #37551] |
610 | ||
2775bd62 TM |
611 | - During startup, when the server encounters a lease whose binding state is |
612 | FTS_BACKUP but whose pool has no configured failover peer, it will reset the | |
613 | lease's binding state to FTS_FREE. This allows the leases to be reclaimed | |
614 | by the server after a pool's configuration has changed from failover to | |
615 | standalone. Prior to this such leases would remain stuck in the backup state | |
616 | making them unavailable for assignment. Note this conversion will occur | |
617 | whether or not the server is compiled for failover. | |
618 | [ISC-Bugs #36960] | |
619 | ||
dd9738aa SR |
620 | - Fixed a small issue in the treatment of hosts in the inform processing |
621 | that could cause the response to an inform to include information from | |
622 | the wrong scope. The two examples we've heard of are getting subnet | |
623 | instead of group information associated with a host entry, or getting | |
624 | global information instead of subnet if the host entry was built via | |
433927d3 SR |
625 | omapi. Thanks to Julien Soula at University of Lille for finding the |
626 | bug and supplying a patch. | |
dd9738aa SR |
627 | [ISC-Bugs #35712] |
628 | ||
491bf4a2 SR |
629 | - Avoid calling pool_timer() recursively from supersede_lease(). This could |
630 | result in leases changing state incorrectly or delaying the running of the | |
631 | leae expiration code. | |
632 | [ISC-Bugs #38002] | |
633 | ||
992dc765 SR |
634 | - Move the check for a PID file and process to be before we rewrite the |
635 | lease file. This avoids the possibility of starting a second instance | |
636 | of a server which changes the current lease file confusing the first | |
637 | instance. This check is only included if the admin hasn't disabled PID | |
638 | files. | |
639 | [ISC-Bugs #38078] | |
001b9d53 | 640 | [ISC-Bugs #38143] |
992dc765 | 641 | |
cb8c997e SR |
642 | - In the client code change the way preferred_life and max_life are printed |
643 | for environment variables to be unsigned rather than signed. | |
644 | Thanks to Jiri Popelka at Red Hat for the bug report and patch. | |
645 | [ISC-Bugs #37084] | |
646 | ||
cb0d7e7c | 647 | - Modified Linux packet handling such that packets received via VLAN are now |
acbecb2e TM |
648 | seen only by the VLAN interface. Prior to this, such packets were seen by |
649 | both the VLAN interface and its parent (physical) interface, causing the | |
650 | server to respond to both. Note this remains an issue for non-Linux OSs. | |
651 | Thanks to Jiri Popelka at Red Hat for the patch. | |
652 | [ISC-Bugs #37415] | |
653 | [ISC-Bugs #37133] | |
654 | [ISC-Bugs #36668] | |
655 | [ISC-Bugs #36652] | |
656 | ||
fb98e02e TM |
657 | - Log content has been changed to more directly suggest that admins should |
658 | check for multiple IPv6 clients attempting to use the same DUID when only | |
659 | abandoned addresses are available. Debug level logging will now emit counts | |
660 | of the total number of, in-use, and abandoned addresses in a shared subnet | |
661 | when the server finds no addresses available for a given DUID. Lastly, | |
662 | threshold logging is now automatically disabled for shared subnets whose | |
663 | total number of possible addresses exceeds (2^64)-1. | |
664 | [ISC-Bugs #26376] | |
665 | [ISC-Bugs #38131] | |
666 | ||
1a006ff6 TM |
667 | - Added a global parameter, prefix-length-mode, which may be used to determine |
668 | how the server uses a non-zero value for prefix-length supplied by clients | |
669 | when soliciting DHCPv6 prefixes. The server supports selection modes of: | |
670 | ignore, prefer, exact, minimum and maximum which are described in detail in | |
671 | the server man pages. The prior behavior of the server was to only offer a | |
672 | prefix whose length exactly matched the prefix-length value requested. If | |
673 | no such prefixes were available, the server returned a status of none | |
674 | available. Note the default mode, "exact", provides this same behavior. | |
675 | [ISC-Bugs #36780] | |
f48dfdf1 | 676 | [ISC-Bugs #32228] |
1a006ff6 | 677 | |
45adf35c TM |
678 | - Corrected inconsistencies in dhcrelay's setting the upper interface hop count |
679 | limit such that it now sets it to 32 when the upstream address is a multicast | |
680 | address per RFC 3315 Section 20. Prior to this if the -u argument preceded | |
681 | the -l argument on the command line or if the same interface was specified | |
682 | for both; the logic to set the hop limit count for the upper interface was | |
683 | skipped. This caused the hop count limit to be set to the default value | |
684 | (typically 1) in the outbound upstream packets. | |
685 | [ISC-Bugs #37426] | |
686 | ||
7d9dd306 TM |
687 | Changes since 4.3.1b1 |
688 | ||
689 | - Modify the linux and openwrt dhclient scripts to process information | |
690 | from a stateless request. Thanks to Jiri Popelka at Red Hat for the | |
691 | bug report and patch. | |
f542e92b | 692 | [ISC-Bugs #36102] |
7d9dd306 | 693 | |
29c6b4f1 SR |
694 | - Remove more unused RCSID tags. These weren't noticed in 4.3 as |
695 | the code isn't used anymore but we remove them here to keep the | |
696 | code consistent across versions. | |
697 | [ISC-Bugs #36451] | |
698 | ||
57187138 | 699 | Changes since 4.3.0 |
01a44a77 | 700 | |
5ade3c84 | 701 | - Tidy up several small tickets. |
38c4774a SR |
702 | Correct parsing of DUID from config file, previously the LL type |
703 | was put in the wrong place in the DUID string. | |
9a111ee8 | 704 | [ISC-Bugs #20962] |
38c4774a SR |
705 | Add code to parse "do-forward-updates" as well as "do-forward-update" |
706 | Thanks to Jiri Popelka at Red Hat. | |
707 | [ISC-Bugs #31328] | |
708 | Remove log_priority as it isn't currently used. | |
709 | [ISC-Bugs #33397] | |
710 | Increase the size of the buffer used for reading interface information. | |
711 | [ISC-Bugs #34858] | |
01a44a77 | 712 | |
fc48033a SR |
713 | - Remove an extra set of the msg_controllen variable. |
714 | [ISC-Bugs #21035] | |
715 | ||
db3f7799 SR |
716 | - Add a more understandable error message if a configuration attempts |
717 | to add multiple keys for a single zone. Thanks to a patch from Jiri | |
718 | Popelka at Red Hat. | |
719 | [ISC-Bugs #31892] | |
720 | ||
0da37b4c SR |
721 | - Fix some minor issues in the dst code. |
722 | [ISC-Bugs #34172] | |
723 | ||
5ade3c84 | 724 | - Properly #ifdef functions so that the code can compile without NSUPDATE. |
158a34fb SR |
725 | [ISC-Bugs #35058] |
726 | ||
dceef873 SR |
727 | - Update the partner's stos (start time of state, basically when we last |
728 | heard from this partner) field when updating the state in failover. | |
729 | [ISC-Bugs #35549] | |
730 | ||
5ade3c84 | 731 | - Modify the overload processing to allow space for the remote agent ID. |
1be2ba15 SR |
732 | [ISC-Bugs #35569] |
733 | Handle the ordering of the SUBNET_MASK option even if it is the last | |
734 | option in the list. | |
735 | [ISC-Bugs #24580] | |
736 | ||
388cba45 SR |
737 | - Remove the code that allows a server to follow RFC3315 instead of |
738 | the subsequent errata from August 2010 when determining which IAs | |
739 | to include if no addresses will be assigned. | |
2c4be1d7 | 740 | [ISC-Bugs #28938] |
388cba45 | 741 | |
2c4be1d7 SR |
742 | - Remove unused RCSID tags. |
743 | [ISC-Bugs #35846] | |
388cba45 | 744 | |
b6ab3f6c SR |
745 | - Correct the v6 client timing code. When doing the timing backoff |
746 | for MRT limit it to MRD. | |
5ade3c84 | 747 | Thanks to Jiri Popelka at Red Hat for the bug report and fix. |
b6ab3f6c SR |
748 | [ISC-Bugs #21238 |
749 | ||
f950de77 SR |
750 | - Add a log entry when killing a client and remove the PID files |
751 | when a server, relay or client are killed. | |
752 | [ISC-Bugs #16970] | |
753 | [ISC-Bugs #17258] | |
754 | ||
5ade3c84 SR |
755 | - Some minor cleanups in the client code. |
756 | In addition to checking for dhcpc check for bootpc in the services list. | |
02b0bdc3 SR |
757 | [ISC-Bugs #18933] |
758 | Correct the client code to only try to get a lease once when the | |
759 | given the "-1" argument. | |
5ade3c84 | 760 | Thanks to Jiri Popelka at Red Hat for the bug report and fix. |
02b0bdc3 SR |
761 | [ISC-Bugs #26735] |
762 | When asked for the version don't send the output to syslog. | |
763 | [ISC-Bugs #29772] | |
764 | Add the next server information to the environment variables for | |
765 | use by the client script. In order to avoid changing the client | |
766 | lease file the next server information isn't written to it. | |
767 | Thanks to Tomas Hozza at Red Hat for the suggestion and a prototype fix. | |
768 | [ISC-Bugs #33098] | |
769 | ||
5ade3c84 | 770 | - Several updates to the dhcp server code. |
d8c7c34e SR |
771 | When not in quiet mode print out the files being used. |
772 | [ISC-Bugs #17551] | |
773 | As accessing some pid files may require privileges move the dropping | |
774 | of permission bits due to the paranoia patch to be after the pid code. | |
5ade3c84 | 775 | Thanks to Jiri Popelka at Red Hat for the bug report and fix. |
d8c7c34e SR |
776 | [ISC-Bugs #25806] |
777 | When processing a "--version" request don't output the version information | |
778 | to syslog. | |
779 | ||
5ade3c84 | 780 | - Add the "enable-log-pid" build option to the configure script. When enabled |
00e9af8e SR |
781 | this causes the client, server and relay programs to include the PID |
782 | number in syslog messages. | |
783 | Thanks to Marius Tomaschewski for the suggestion and proto-patch. | |
784 | [ISC-Bugs #29713] | |
785 | ||
9279a3d7 SR |
786 | - Add a #define to specify the prefix length used when a client attempts |
787 | to configure an address. This can be modified by editing includes/site.h. | |
788 | By default it is set to 64. While 128 might be a better choice it would | |
789 | also be a change for currently running systems, so we have left it at 64. | |
63c8800c | 790 | [ISC-Bugs #DHCP-2] |
9279a3d7 | 791 | |
79818c93 SR |
792 | - Add a run time option to the client "-df" to allow the administrator to |
793 | point to a second lease file the client can search for a DUID. This can | |
794 | be used to allow a v4 and a v6 instance of the client to share a DUID. | |
795 | The second file will only be searched if there isn't a DUID in the main | |
796 | lease file and the DUID will be written out to the main lease file. | |
797 | [ISC-Bugs #34886] | |
798 | ||
8a2e40cf SR |
799 | - Have the client fsync the lease file to avoid lease corruption if the |
800 | client hibernates or otherwise shuts down. | |
801 | [ISC-Bugs #35894] | |
802 | ||
59a351d6 SR |
803 | - Add a check for L2VLAN in bpf.c to help support VLAN interfaces |
804 | Thanks to Steinar Haug for the suggestion. | |
805 | [ISC-Bugs #36033] | |
806 | ||
0ab4a716 SR |
807 | - Modify the handling of the resolv.conf file to allow the DHCP |
808 | process to start up even if the resolv.conf file has problems. | |
809 | [ISC-Bugs #35989] | |
810 | ||
a89fd0cd | 811 | - Add threshold logging functionality. Two new options, |
250f7134 SR |
812 | log-threshold-low and log-threshold-high, indicate to the |
813 | server if and when it should log an error message as addresses | |
814 | in a pool are used. | |
815 | [ISC-Bugs #34487] | |
816 | ||
b05e05b7 SR |
817 | - Add code to properly dereference a pointer in the dhclient code |
818 | on an error condition. | |
e9326fd0 | 819 | [ISC-Bugs #36194] |
b05e05b7 | 820 | |
ad80055f SR |
821 | - Add code to help clean up soft leases. |
822 | [ISC-Bugs #36304] | |
823 | ||
e9326fd0 SR |
824 | - Disable the gentle shutdown functionality until we can determine |
825 | the best way to present it to remove or reduce the side effects. | |
826 | [ISC-Bugs #36066] | |
827 | ||
01a44a77 SR |
828 | Changes since 4.3.0rc1 |
829 | ||
830 | - None | |
831 | Changes since 4.3.0b1 | |
832 | ||
833 | - Tidy up receive packet processing. | |
834 | Thanks to Brad Plank of GTA for reporting the issue and suggesting | |
835 | a possible patch. | |
836 | [ISC-Bugs #34447] | |
837 | ||
838 | Changes since 4.3.0a1 | |
839 | ||
840 | - Modify the message displayed when a process hits a fatal error. | |
841 | The new message is much shorter and simply points to the README | |
842 | and our website for directions on bug submissions. | |
843 | [ISC-Bugs #24789] | |
844 | ||
845 | - Handle an absent resolv.conf file better. | |
846 | [ISC-Bugs #35194] | |
847 | ||
6980ae03 | 848 | Changes since 4.2.0 (new features) |
51b8a8a0 SR |
849 | |
850 | - If a client renews before 'dhcp-cache-threshold' percent of its lease | |
851 | has elapsed (default 25%), the server will reuse the allocated lease | |
852 | (provide a lease within the currently allocated lease-time) rather | |
853 | than extend or renew the lease. This absolves the server of needing | |
854 | to perform an fsync() operation on the lease database before reply, | |
855 | which improves performance. [ISC-Bugs #22228] | |
80778e94 | 856 | Updated this patch to support asynchronous DDNS. If the server is |
adb95d23 | 857 | attempting to do DDNS on a lease it should be updated and written to |
4809ef5c | 858 | disk even if that wouldn't be necessary due to the thresholding. |
8cd88e20 | 859 | [ISC-Bugs #26311] |
51b8a8a0 | 860 | |
6980ae03 SR |
861 | - The 'no available billing' log line now also logs the name of the last |
862 | matching billing class tried before failing to provide a billing. | |
863 | [ISC-Bugs #21759] | |
864 | ||
32e651c4 SR |
865 | - A problem with missing get_hw_addr function when --enable-use-sockets |
866 | was used is now solved on GNU/Linux, BSD and GNU/Hurd systems. Note | |
867 | that use-sockets feature was not tested on those systems. Client and | |
868 | server code no longer use MAX_PATH constant that is not defined on | |
3cb6f9bb | 869 | GNU/Hurd systems. [ISC-Bugs #25979] |
32e651c4 | 870 | |
67418698 SR |
871 | - Add a perl script in the contrib directory, dhcp-lease-list.pl, which |
872 | can parse v4 lease files and output the lease information in a more | |
873 | human friendly manner. This was written by Christian Hammers with | |
874 | some updates by vom and ISC. This is contributed code and is not | |
875 | supported by ISC; however it may be useful to some users. | |
876 | [ISC-Bugs #20680] | |
877 | ||
a7341359 | 878 | - Add support in v6 for on-commit, on-expire and on-release. |
4809ef5c | 879 | [ISC-Bugs #27912] |
a7341359 | 880 | |
01fa619f SR |
881 | - Add support for using classes with v6. |
882 | [ISC-Bugs #26510] | |
883 | ||
d7d9c0c7 SR |
884 | - Update the DDNS code to current standards and allow for sharing |
885 | of DDNS entries between v4 and v6 clients. The new code is used | |
886 | if the ddns-update-style is set to "standard", the older code is | |
887 | still available if ddns-update-style is set to "interim". The | |
888 | oldest DDNS code "ad-hoc" has been removed. Thanks to Thomas Pegeot | |
889 | who submitted a patch for this issue. This patch is based on | |
890 | that work with some modifications. | |
64fb661c | 891 | [ISC-Bugs #21139] |
1534fff7 | 892 | |
cde11a4c SR |
893 | - Add a configuration option to the server to suppress using fsync(). |
894 | Enabling this option will mean that fsync() is never called. This | |
895 | may provide better performance but there is also a risk that a lease | |
896 | will not be properly written to the disk after it has been issued | |
897 | to a client and before the server stops. Using this option is | |
898 | not recommended. | |
64fb661c | 899 | [ISC-Bugs #34810] |
cde11a4c | 900 | |
f88446f1 SR |
901 | - Add some logging statements to indicate when the server is ready |
902 | to serve. One statement is emitted after the server has finished | |
903 | reading its files and is about to enter the dispatch loop. | |
904 | This is "Server starting service.". | |
905 | The second is emitted when a server determines that both it and | |
906 | its failover peer are in the normal state. | |
907 | This is "failover peer <name>: Both servers normal." | |
64fb661c | 908 | [ISC-Bugs #33208] |
f88446f1 | 909 | |
619304cd SR |
910 | - Add support for accessing options from v6 relays. The v6relay |
911 | statement allows the administrator to choose which relay to | |
912 | use when searching for an option, see the dhcp-options man page | |
6b9c9f87 SR |
913 | for a description. The host-identifier option has also been |
914 | updated to support the use of relay options, see the dhcpd.conf | |
619304cd SR |
915 | man page for a description. |
916 | [ISC-Bugs #19598] | |
917 | ||
e54ff84f | 918 | - When doing DDNS if there isn't an appropriate zone statement attempt |
80778e94 | 919 | to find a reasonable nameserver via a DNS resolver. This restores |
e54ff84f SR |
920 | some functionality that was lost in the transition to asynchronous |
921 | DDNS. Due to the lack of security and increase in fragility of the | |
922 | system when using this feature we strongly recommend the use of | |
923 | appropriate zone statements rather than using this functionality. | |
924 | [ISC-Bugs #30461] | |
925 | ||
61ef216b SR |
926 | - Add support for specifying the address from which to send |
927 | DDNS updates on the DHCP server. There are two new options | |
928 | "ddns-local-address4" and "ddns-local-address6" that each take | |
929 | one instance of their respective address types. | |
930 | [ISC-Bugs #34779] | |
4d079f0e | 931 | |
38ee81bd SR |
932 | - Add ignore-client-uids option in the server. This option causes |
933 | the server to not record a client's uid in its lease. This | |
934 | violates the specification but may also be useful when a client | |
935 | can dual boot using different client ids but the same mac address. | |
6b9c9f87 | 936 | Thank you to Brian De Wolf at Cal Poly Pomona for the patch. |
38ee81bd SR |
937 | [ISC-Bugs #32427] |
938 | [ISC-Bugs #35066] | |
4d079f0e SR |
939 | |
940 | - Extend the DHCPINFORM processing to honor the subnet selection option | |
941 | and take host declarations into account. | |
942 | Thanks to Christof Chen for testing and submitting the patch. | |
943 | [ISC-Bugs #35015] | |
944 | ||
fe2ac9e3 SR |
945 | - Extend the hardware expression to look into the lease structure |
946 | for a hardware address if there is no packet. This allows the | |
947 | server to find the hardware address during on-expiry processing. | |
948 | [ISC-Bugs #24584] | |
61ef216b | 949 | |
bc30c84e SR |
950 | - Add definitions for some options that have been specified by the IETF. |
951 | [ISC-Bugs #29268] | |
ccc2a367 | 952 | [ISC-Bugs #35198] |
bc30c84e | 953 | |
01a44a77 | 954 | Changes since 4.2.0 (bug fixes) |
8ee352ee | 955 | |
01a44a77 SR |
956 | - When using 'ignore client-updates;', the FQDN returned to the client |
957 | is no longer truncated to one octet. | |
8ee352ee | 958 | |
01a44a77 | 959 | - Cleaned up an unused hardware address variable in nak_lease(). |
4889a646 | 960 | |
01a44a77 SR |
961 | - Manpage entries for the ia-pd and ia-prefix options were updated to |
962 | reflect support for prefix delegation. | |
4889a646 | 963 | |
01a44a77 | 964 | - Cleaned up some compiler warnings |
7dc4e69c | 965 | |
01a44a77 SR |
966 | - An optimization described in the failover protocol draft is now included, |
967 | which permits a DHCP server operating in communications-interrupted state | |
968 | to 'rewind' a lease to the state most recently transmitted to its peer, | |
969 | greatly increasing a server's endurance in communications-interrupted. | |
970 | This is supported using a new 'rewind state' record on the dhcpd.leases | |
971 | entry for each lease. | |
c5bc8b1a | 972 | |
01a44a77 | 973 | - Fix the trace code which was broken by the changes to the DDNS code. |
d0a10f6a | 974 | |
01a44a77 SR |
975 | - Update the fsync code to work with the changes to the DDNS code. It now |
976 | uses a timer instead of noticing if there are no more packets to process. | |
dc9d7b08 | 977 | |
01a44a77 SR |
978 | - When constructing the DNS name structure from a text string append |
979 | the root to relative names. This satisfies a requirement in the DNS | |
980 | library that names be absolute instead of relative and prevents DHCP | |
981 | from crashing. [ISC-Bugs #21054] | |
a24b9f23 | 982 | |
01a44a77 SR |
983 | - "The LDAP Patch" that has been circulating for some time, written by |
984 | Brian Masney and S.Kalyanasundraram and maintained for application to | |
985 | the DHCP-4 sources by David Cantrell has been included. Please be | |
986 | advised that these sources were contributed, and do not yet meet the | |
987 | high standards we place on production sources we include by default. | |
988 | As a result, the LDAP features are only included by using a compile-time | |
989 | option which defaults off, and if you enable it you do so under your | |
990 | own recognizance. We will be improving this software over time. | |
991 | [ISC-Bugs #17741] | |
c5bc8b1a | 992 | |
01a44a77 SR |
993 | - Prohibit including lease time information in a response to a DHCP INFORM. |
994 | [ISC-Bugs #21092] | |
cc17cbc3 | 995 | |
01a44a77 SR |
996 | ! Accept a client id of length 0 while hashing. Previously the server would |
997 | exit if it attempted to hash a zero length client id, providing attackers | |
998 | with a simple denial of service attack. [ISC-Bugs #21253] | |
999 | CERT: VU#541921 - CVE: CVE-2010-2156 | |
08b2d347 | 1000 | |
01a44a77 | 1001 | - A memory leak in ddns processing was closed. [ISC-Bugs #21377] |
08b2d347 | 1002 | |
01a44a77 SR |
1003 | - Modify the exception handling for initial context creation. Previously |
1004 | we would try and clean up before exiting. This could present problems | |
1005 | when the cleanup required part of the context that wasn't available. It | |
1006 | also didn't do much as we exited afterwards anyway. Now we simply log | |
1007 | the error and exit. [ISC-Bugs #21093] | |
ad4001ce | 1008 | |
01a44a77 SR |
1009 | - A bug was fixed that could cause the DHCPv6 server to advertise/assign a |
1010 | previously allocated (active) lease to a client that has changed subnets, | |
1011 | despite being on different shared networks. Dynamic prefixes specifically | |
1012 | allocated in shared networks also now are not offered if the client has | |
1013 | moved. [ISC-Bugs #21152] | |
3cb6f9bb | 1014 | |
01a44a77 | 1015 | - Add some debugging output for use with the DDNS code. [ISC-Bugs #20916] |
f6dc164f | 1016 | |
01a44a77 SR |
1017 | - Fix the trace code to handle timing events better and to truncate a file |
1018 | before using instead of overwriting it. [ISC-Bugs #20969] | |
4b8251a0 | 1019 | |
01a44a77 SR |
1020 | - Modify the determination of the default TTL to use for DDNS updates. |
1021 | The user may still configure the ttl via ddns-ttl. The default for | |
1022 | both v4 and v6 is now 1/2 the (preferred) lease time with a limit. The | |
1023 | previous defaults (1/2 lease time without a limit for v4 and a default | |
1024 | value for v6) may be used by defining USE_OLD_DDNS_TTL in site.h | |
1025 | [ISC-Bugs #21126] | |
47e8308d | 1026 | |
01a44a77 SR |
1027 | - libisc/libdns is now brought up to version 9.7.1rc1. This corrects |
1028 | three reported flaws in ISC DHCP; | |
d9b5c150 | 1029 | |
01a44a77 SR |
1030 | o DHCP processes (dhcpd, dhclient) fail to start if one of either the |
1031 | IPv4 or IPv6 address families is not present. [ISC-Bugs #21122] | |
08e6dad9 | 1032 | |
01a44a77 SR |
1033 | o Assertion failure when attempting to cancel a previously running DDNS |
1034 | update. [ISC-Bugs #21133] | |
9f9265b6 | 1035 | |
01a44a77 SR |
1036 | o Compilation failure of libisc/libdns due to the use of a flexible |
1037 | array member. [ISC-Bugs #21316] | |
9f9265b6 | 1038 | |
01a44a77 | 1039 | - Add declaration for variable in debug code in alloc.c. [ISC-Bugs #21472] |
35de6c8c | 1040 | |
01a44a77 SR |
1041 | - Documentation cleanup covering multiple tickets |
1042 | [ISC-Bugs #20265] [ISC-Bugs #20259] minor cleanup | |
1043 | [ISC-Bugs #20263] add text describing some default values | |
1044 | [ISC-Bugs #20193] single quotes at the start of a line indicate a control | |
1045 | line to nroff, escape them if we actually want a quote. | |
1046 | [ISC-Bugs #18916] sync the pointer to web pages amongst the different docs | |
de87ffe3 | 1047 | |
01a44a77 SR |
1048 | - 'get-host-names true;' now also works even if 'use-host-decl-names true;' |
1049 | was also configured. The nature of this repair also fixes another | |
1050 | error; the host-name supplied by a client is no longer overridden by a | |
1051 | reverse lookup of the lease address. Thanks to a patch from Wilco Baan | |
1052 | Hofman supplied to us by the Debian package maintenance team. | |
1053 | [ISC-Bugs #21691] {Debian Bug#509445} | |
e563ec2e | 1054 | |
01a44a77 SR |
1055 | - The .TH tag for the dhcp-options manpage was typo repaired |
1056 | thanks to a report from jidanni and the Debian package maintenance | |
1057 | team. [ISC-Bugs #21676] {Debian Bug#563613} | |
3bedb117 | 1058 | |
01a44a77 SR |
1059 | - More documentation changes - primarily to put the options in the dhclient |
1060 | and dhcpd man pages into the standard form. Thanks in part to a patch | |
1061 | from David Cantrell at Red Hat. | |
1062 | [ISC-Bugs #20264] and parts of [ISC-Bugs #17744] dhclient.8 changes | |
18a28679 | 1063 | |
01a44a77 SR |
1064 | - Add code to clear the pointer to an object in an OMAPI handle when the |
1065 | object is freed due to a dereference. [ISC-Bugs #21306] | |
0b2ec8c9 | 1066 | |
01a44a77 SR |
1067 | - Fixed a bug that leaks host record references onto lease structures, |
1068 | causing the server to apply configuration intended for one host to any | |
1069 | other innocent clients that come along later. [ISC-Bugs #22018] | |
67b2cb45 | 1070 | |
01a44a77 SR |
1071 | - Minor code fixes |
1072 | [ISC-Bugs #19566] When trying to find the zone for a name for ddns allow | |
1073 | the name to be at the apex of the zone. | |
1074 | [ISC-Bugs #19617] Restrict length of interface name read from command line | |
1075 | in dhcpd - based on a patch from David Cantrell at Red Hat. | |
1076 | [ISC-Bugs #20039] Correct some error messages in dhcpd.c | |
1077 | [ISC-Bugs #20070] Better range check on values when creating a DHCID. | |
9a111ee8 | 1078 | [ISC-Bugs #20198] Avoid writing past the end of the field when adding |
01a44a77 SR |
1079 | overly long file or server names to a packet and add a log message |
1080 | if the configuration supplied overly long names for these fields. | |
1081 | Thanks to Martin Pala. | |
1082 | [ISC-Bugs #21497] Add a little more randomness to rng seed in client | |
1083 | thanks to a patch from Jeremiah Jinno. | |
74977c94 | 1084 | |
01a44a77 | 1085 | - Correct error handling in DLPI [ISC-Bugs #20378] |
30e42327 | 1086 | |
01a44a77 SR |
1087 | - Remove __sun__ and __hpux__ typedefs in osdep.h as they are now being |
1088 | checked in configure. [ISC-Bugs #20443] | |
dbd65517 | 1089 | |
01a44a77 SR |
1090 | - Modify how the cmsg header is allocated the v6 send and received routines |
1091 | to compile on more compilers. [ISC-Bugs #20524] | |
0f750c4f | 1092 | |
01a44a77 SR |
1093 | - When parsing a domain name free the memory for the name after we are |
1094 | done with it. [ISC-Bugs #20824] | |
b95f1ee0 | 1095 | |
01a44a77 SR |
1096 | - Add an elapsed time option to the release message and refactor the |
1097 | code to move most of the common code to a single routine. | |
1098 | [ISC-Bugs #21171]. | |
b95f1ee0 | 1099 | |
01a44a77 SR |
1100 | - Two identical log messages for commit_leases() have been disambiguated. |
1101 | [ISC-Bugs #18915] | |
0ef9a46e | 1102 | |
01a44a77 SR |
1103 | - Parse date strings more properly - the code now handles semi-colons in |
1104 | date strings correctly. Thanks to a patch from Jiri Popelka at Red Hat. | |
1105 | [ISC-Bugs #21501, #20598] | |
de6c9af6 | 1106 | |
01a44a77 SR |
1107 | - Fixes to lease input and output. |
1108 | [ISC-Bugs #20418] - Some systems don't support the "%s" argument to | |
1109 | strftime, paste together the same string using mktime instead. | |
1110 | [ISC-Bugs #19596] - When parsing iaid values accept printable | |
1111 | characters. | |
1112 | [ISC-Bugs #21585] - Always print time values in omshell as hex | |
1113 | instead of ascii if the values happen to be printable characters. | |
87132514 | 1114 | |
01a44a77 SR |
1115 | - Minor changes for scripts, configure.ac and Makefiles |
1116 | [ISC-Bugs #19147] Use domain-search instead of domain-name in manual and | |
1117 | example conf file. Thanks to a patch from David Cantrell | |
1118 | at Red Hat. | |
1119 | [ISC-Bugs #19761] Restore address when doing a rebind in DHCPv6 | |
1120 | [ISC-Bugs #19945] Properly close the quote on some arguments. | |
1121 | [ISC-Bugs #20952] Add 64 bit types to configure.ac | |
adb95d23 | 1122 | [ISC-Bugs #21308] Add "PATH=" to CLIENT_PATH environment variable |
b047bd38 | 1123 | |
01a44a77 SR |
1124 | - Update the code to parse dhcpv6 lease files to accept a semi-colon at |
1125 | the end of the max-life and preferred-life clauses. In order to be | |
1126 | backwards compatible with older lease files not finding a semi-colon | |
1127 | is also accepted. [ISC-Bugs #22303]. | |
e3c94800 | 1128 | |
01a44a77 SR |
1129 | ! Handle a relay forward message with an unspecified address in the |
1130 | link address field. Previously such a message would cause the | |
1131 | server to crash. Thanks to a report from John Gibbons. [ISC-Bugs #21992] | |
1132 | CERT: VU#102047 CVE: CVE-2010-3611 | |
dd9237c3 | 1133 | |
01a44a77 SR |
1134 | - ./configure on longer searches for -lcrypto to explicitly link against. |
1135 | This fixes a bug where 'dhclient' would have shared library dependencies | |
1136 | on '/usr/lib'. [ISC-Bugs #21967] | |
d13db163 | 1137 | |
01a44a77 SR |
1138 | - Handle pipe failures more gracefully. Some OSes pass a SIGPIPE |
1139 | signal to a process and will kill the process if the signal isn't | |
1140 | caught. This patch adds code to turn off the SIGPIPE signal via | |
1141 | a setsockopt() call. The signal is already being ignored as part | |
1142 | of the ISC library. [ISC-Bugs #22269] | |
b342f2e7 | 1143 | |
01a44a77 SR |
1144 | - Restore printing of values in omshell to the style pre 21585. For |
1145 | 21585 we changed the print routines to always display time values | |
1146 | as a hex list. This had a side effect of printing all data strings | |
1147 | as a hex list. We shall investigate other ways of displaying time | |
1148 | values more usefully. [ISC-Bugs #22626] | |
797aab67 | 1149 | |
01a44a77 SR |
1150 | ! Fix the handling of connection requests on the failover port. |
1151 | Previously a connection request from a source that wasn't | |
1152 | listed as a failover peer would cause the server to become | |
1153 | non-responsive. Thanks to a report from Brad Bendily, brad@bendily.com. | |
1154 | [ISC-Bugs #22679] | |
9a111ee8 | 1155 | CERT: VU#159528 CVE: CVE-2010-3616 |
bc7f8b8e | 1156 | |
01a44a77 SR |
1157 | - Don't pass the ISC_R_INPROGRESS status to the omapi signal handlers. |
1158 | Passing it through to the handlers caused the omshell program to fail | |
1159 | to connect to the server. [ISC-Bugs #21839] | |
d289ee68 | 1160 | |
adb95d23 | 1161 | - Fix the parenthesis in the code to process configuration statements |
01a44a77 SR |
1162 | beginning with "auth". The previous arrangement caused |
1163 | "auto-partner-down" to be processed incorrectly. [ISC-Bugs #21854] | |
d19fa5a1 | 1164 | |
01a44a77 SR |
1165 | - Limit the timeout period allowed in the dispatch code to 2^^32-1 seconds. |
1166 | Thanks to a report from Jiri Popelka at Red Hat. | |
1167 | [ISC-Bugs #22033], [Red Hat Bug #628258] | |
bb9189c3 | 1168 | |
01a44a77 SR |
1169 | - When processing the format flags for a given option consume the |
1170 | flag indicating an optional value correctly. A symptom of this | |
1171 | bug was an infinite loop when trying to parse the slp-service-scope | |
1172 | option. Thanks to a patch from Marius Tomaschewski. | |
1173 | [ISC-Bugs #22055] | |
cbbd2714 | 1174 | |
01a44a77 SR |
1175 | - Disable the use of kqueue in the ISC library. This avoids a problem |
1176 | between the fork and socket code that caused the dhcpd process to | |
1177 | use all available cpu if the program daemonized itself. | |
1178 | [ISC-Bugs #21911] | |
d208bb04 | 1179 | |
01a44a77 SR |
1180 | ! When processing a request in the DHCPv6 server code that specifies |
1181 | an address that is tagged as abandoned (meaning we received a | |
1182 | decline request for it previously) don't attempt to move it from | |
1183 | the inactive to active pool as doing so can result in the server | |
1184 | crashing on an assert failure. Also retag the lease as active | |
1185 | and reset its timeout value. | |
1186 | [ISC-Bugs #21921] | |
9a111ee8 | 1187 | |
01a44a77 SR |
1188 | - Removed the restriction on using IPv6 addresses in IPv4 mode. This |
1189 | allows IPv4 options which contain IPv6 addresses to be specified. For | |
1190 | example the 6rd option can be specified and used like this: | |
1191 | [ISC-Bugs #23039] | |
d208bb04 | 1192 | |
01a44a77 SR |
1193 | option 6rd code 212 = { integer 8, integer 8, |
1194 | ip6-address, array of ip-address }; | |
1195 | option 6rd 16 10 2001:: 1.2.3.4, 5.6.7.8; | |
25f664a6 | 1196 | |
01a44a77 SR |
1197 | - Handle some DDNS corner cases better. Maintain the DDNS transaction |
1198 | information when updating a lease and cancel any existing transactions | |
9a111ee8 | 1199 | when removing the ddns information. |
01a44a77 | 1200 | [ISC-Bugs #23103] |
d424157d | 1201 | |
01a44a77 SR |
1202 | - Some fixes for LDAP |
1203 | [ISC-Bugs #21783] - Include lber library when building ldap | |
1204 | [ISC-Bugs #22888] - Enable the ldap code when buidling common | |
1205 | The above fixes are from Jiri Popelka at Red Hat. | |
3221151b | 1206 | |
01a44a77 SR |
1207 | - Modify the dlpi code to accept getmsg() returning a positive value. |
1208 | [ISC-Bugs #22824] | |
bea17697 SR |
1209 | |
1210 | ! In dhclient check the data for some string options for | |
1211 | reasonableness before passing it along to the script that | |
1212 | interfaces with the OS. | |
1213 | [ISC-Bugs #23722] | |
1214 | CVE: CVE-2011-0997 | |
c7aa4dd4 TM |
1215 | |
1216 | - DHCPv6 server now responds properly if client asks for a prefix that | |
1217 | is already assigned to a different client. [ISC-Bugs #23948] | |
4a5bfeac SR |
1218 | |
1219 | - Add the option "--no-pid" to the client, relay and server code, | |
1220 | to disable writing a pid file. Add the option "-pf pidfile" | |
1221 | to the relay to allow the user to supply the pidfile name at | |
1222 | runtime. Add the "with-relay6-pid-file" option to configure | |
1223 | to allow the user to supply the pidfile name for the relay | |
1224 | in v6 mode at configure time. | |
1225 | [ISC-Bugs #23351] [ISC-Bugs #17541] | |
5d082abd TM |
1226 | |
1227 | - 'dhclient' no longer waits a random interval after first starting up to | |
1228 | begin in the INIT state. This conforms to RFC 2131, but elects not to | |
9a111ee8 | 1229 | implement a 'SHOULD' direction in section 4.1. The goal of this change |
73c83820 | 1230 | is to start up faster. [ISC-Bugs #19660] |
9a111ee8 TM |
1231 | |
1232 | - Added 'initial-delay' parameter that specifies maximum amount of time | |
1233 | before client goes to the INIT state. The default value is 0. In previous | |
1234 | versions of the code client could wait up to 5 seconds. The old behavior | |
5d082abd | 1235 | may be restored by using 'initial-delay 5;' in the client config file. |
73c83820 | 1236 | [ISC-Bugs #19660] |
5d082abd TM |
1237 | |
1238 | - ICMP ping-check should now sit closer to precisely the number of seconds | |
1239 | configured (or default 1), due to making use of the new microsecond | |
1240 | scale timer internally to dhcpd. This corrects a bug where the server | |
1241 | may immediately timeout an ICMP ping-check if it was made late in the | |
73c83820 | 1242 | current second. [ISC-Bugs #19660] |
5d082abd TM |
1243 | |
1244 | - The DHCP client will schedule renewal and rebinding events in | |
1245 | microseconds if the DHCP server provided a lease-time that would result | |
1246 | in sub-1-second timers. This corrects a bug where a 2-second or lower | |
1247 | lease-time would cause the DHCP client to enter an infinite loop by | |
73c83820 | 1248 | scheduling renewal at zero seconds. [ISC-Bugs #19660] |
5d082abd TM |
1249 | |
1250 | - Client lease records are recorded at most once every 15 seconds. This | |
1251 | keeps the client from filling the lease database disk quickly on very small | |
73c83820 | 1252 | lease times. [ISC-Bugs #19660] |
5d082abd TM |
1253 | |
1254 | - To defend against RFC 2131 non-compliant DHCP servers which fail to | |
1255 | advertise a lease-time (either mangled, or zero in value) the DHCP | |
1256 | client now adds the server to the reject list ACL and returns to INIT | |
1257 | state to hopefully find an RFC 2131 compliant server (or retry in INIT | |
73c83820 | 1258 | forever). [ISC-Bugs #19660] |
023fbaa0 TM |
1259 | |
1260 | - Parameters configured to evaluate from user defined function calls can | |
1261 | now be correctly written to dhcpd.leases (as on 'on events' or dynamic | |
1262 | host records inserted via OMAPI). [ISC-Bugs #22266] | |
1263 | ||
1264 | - If a 'next-server' parameter is configured in a dynamic host record via | |
1265 | OMAPI as a domain name, the syntax written to disk is now correctly parsed | |
1266 | upon restart. [ISC-Bugs #22266] | |
656b1ece TM |
1267 | |
1268 | - The DHCP server now responds to DHCPLEASEQUERY messages from agents using | |
1269 | IP addresses not covered by a subnet in configuration. Whether or not to | |
1270 | respond to such an agent is still governed by the 'allow leasequery;' | |
1271 | configuration parameter, in the case of an agent not covered by a configured | |
1272 | subnet the root configuration area is examined. Server now also returns | |
1273 | vendor-class-id option, if client sent it. [ISC-Bugs #21094] | |
9a111ee8 | 1274 | |
fc06ee4f SR |
1275 | - Documentation fixes |
1276 | [ISC-Bugs #17959] add text to AIX section describing how to have it send | |
1277 | responses to the all-ones address. | |
1278 | [ISC-Bugs #19615] update the includes in dhcpctl/dhcpctl.3 to be more correct | |
1279 | [ISC-Bugs #20676] update dhcpd.conf.5 to include the RFC numbers for DDNS | |
1280 | ||
1185c766 TM |
1281 | - Relay no longer crashes, when DHCP packet is received over interface without |
1282 | any IPv4 address assigned. Also extended logging message about discarding | |
1283 | packets with invalid hlen with information about relevant interface name. | |
1284 | [ISC-Bugs #22409] | |
1285 | ||
c6455252 TM |
1286 | - Relay now properly logs that packet was received over interface without |
1287 | global IPv6 address [ISC-Bugs #24070] | |
1288 | ||
9a111ee8 TM |
1289 | - Linux Packet Filter interface improvement. sockaddr_pkt structure is used, |
1290 | rather than sockaddr. Packet ethertype is now forced to ETH_P_IP. | |
9369bdc1 TM |
1291 | [ISC-Bugs #18975] |
1292 | ||
fb30f3fc SR |
1293 | - Minor code cleanups - but note port change for #23196 |
1294 | [ISC-Bugs #23470] - Modify when an ignore return macro is defined to | |
1295 | handle unsed error return warnings for more versions of gcc. | |
1296 | [ISC-Bugs #23196] - Modify the reply handling in the server code to | |
1297 | send to a specified port rather than to the source port for the incoming | |
1298 | message. Sending to the source port was test code that should have | |
1299 | been removed. The previous functionality may be restored by defining | |
1300 | REPLY_TO_SOURCE_PORT in the includes/site.h file. We suggest you don't | |
1301 | enable this except for testing purposes. | |
1302 | [ISC-Bugs #22695] - Close a file descriptor in an error path. | |
1303 | [ISC-Bugs #19368] - Tidy up variable types in validate_port. | |
1304 | ||
c616de4f | 1305 | - Code cleanup: remove obsolete PROTO, KandR, INLINE and ANSI_DECL macros |
9a111ee8 | 1306 | [ISC-Bugs #13151] |
c616de4f TM |
1307 | |
1308 | - Compilation problem with gcc4.5 and omshell.c resolved. [ISC-Bugs #23831] | |
a34feb7d | 1309 | |
4f55e11b SR |
1310 | - Client Script fixes |
1311 | [ISC-Bugs #23045] Typos in client/scripts/openbsd | |
1312 | [ISC-Bugs #23565] In the client scripts add a zone id (interface id) if | |
1313 | the domain search address is link local. | |
1314 | [ISC-Bugs #1277] In some of the client scripts add code to handle the | |
1315 | case of the default router information being changed without the address | |
1316 | being changed. | |
1317 | ||
802fdea1 TM |
1318 | - Documentation cleanup |
1319 | [ISC-Bugs #23326] Updated References document, several man page updates | |
1320 | ||
9a111ee8 | 1321 | - Server no longer complains about NULL pointer when configured |
1b601efa TM |
1322 | server-identifier expression fails to evaluate. [ISC-Bugs #24547] |
1323 | ||
199f0b8a SR |
1324 | - Convert ISC_R_INPROGRESS status to ISC_R_SUCCESS when called from other |
1325 | than the dispatch handler. This fixes an issue where omshell, when | |
1326 | run from the same platform as the server, would appear to fail to | |
1327 | connect. This is a companion to #21839. [ISC-Bugs #23592] | |
1328 | ||
786f2e79 SR |
1329 | - Enlarge the buffer size used by the Omshell code and some of the |
1330 | print routines to allow for greater than 60 characters or, when | |
1331 | printing as hex strings, 20 characters. [ISC-Bugs #22743] | |
1332 | ||
7cfeb916 SR |
1333 | - In Solaris 11 switch to using sockets instead of DLPI, thanks |
1334 | to a patch form Oracle. [ISC-Bugs #24634]. | |
1335 | ||
9a111ee8 TM |
1336 | - Strict checks for content of domain-name DHCPv4 option can now be |
1337 | configured during compilation time. Even though RFC2132 does not allow | |
1338 | to store more than one domain in domain-name option, such behavior is | |
d15aa964 TM |
1339 | now enabled by default, but this may change some time in the future. |
1340 | See ACCEPT_LIST_IN_DOMAIN_NAME define in includes/site.h. | |
1341 | [ISC-Bugs #24167] | |
1342 | ||
beaed73f SR |
1343 | - DNS Update fix. A misconfigured server could crash during DNS update |
1344 | processing if the configuration included overlapping pools or | |
1345 | multiple fixed-address entries for a single address. This issue | |
1346 | affected both IPv4 and IPv6. The fix allows a server to detect such | |
1347 | conditions, provides the user with extra information and recommended | |
1348 | steps to fix the problem. If the user enables the appropriate option | |
1349 | in site.h then server will be terminated | |
1350 | [ISC-Bugs #23595] | |
1351 | ||
8bd96ccb SR |
1352 | ! Two packets were found that cause a server to halt. The code |
1353 | has been updated to properly process or reject the packets as | |
1354 | appropriate. Thanks to David Zych at University of Illinois | |
1355 | for reporting this issue. [ISC-Bugs #24960] | |
1356 | One CVE number for each class of packet. | |
1357 | CVE-2011-2748 | |
1358 | CVE-2011-2749 | |
1359 | ||
01a44a77 SR |
1360 | - Fix the code that checks for an existing DDNS transaction to cancel |
1361 | when removing DDNS information, so that we will continue with the | |
1362 | processing if we have a lease even if it doesn't have an outstanding | |
1363 | transaction. [ISC-Bugs #24682] | |
5a38e43f | 1364 | |
01a44a77 SR |
1365 | - Add AM_MAINTAINER_MODE to configure.ac to avoid rebuilding |
1366 | configuration files. [ISC-Bugs #24107] | |
5a38e43f | 1367 | |
01a44a77 SR |
1368 | - Add support for passing DDNS information to a DNS server over |
1369 | an IPv6 address. [ISC-Bugs #22647] | |
524705e5 | 1370 | |
01a44a77 SR |
1371 | - Enhanced patch for 23595 to handle IPv4 fixed addresses more |
1372 | cleanly. [ISC-Bugs #23595] | |
66be0ad1 | 1373 | |
01a44a77 SR |
1374 | ! Add a check for a null pointer before calling the regexec function. |
1375 | Without this check we could, under some circumstances, pass | |
1376 | a null pointer to the regexec function causing it to segfault. | |
1377 | Thanks to a report from BlueCat Networks. | |
1378 | [ISC-Bugs #26704]. | |
1379 | CVE: CVE-2011-4539 | |
57fbc772 | 1380 | |
01a44a77 SR |
1381 | ! Modify the DDNS handling code. In a previous patch we added logging |
1382 | code to the DDNS handling. This code included a bug that caused it | |
1383 | to attempt to dereference a NULL pointer and eventually segfault. | |
1384 | While reviewing the code as we addressed this problem, we determined | |
1385 | that some of the updates to the lease structures would not work as | |
1386 | planned since the structures being updated were in the process of | |
1387 | being freed: these updates were removed. In addition we removed an | |
1388 | incorrect call to the DDNS removal function that could cause a failure | |
1389 | during the removal of DDNS information from the DNS server. | |
1390 | Thanks to Jasper Jongmans for reporting this issue. | |
1391 | [ISC-Bugs #27078] | |
1392 | CVE: CVE-2011-4868 | |
57fbc772 | 1393 | |
01a44a77 SR |
1394 | - Fixed the code that checks if an address the server is planning |
1395 | to hand out is in a reserved range. This would appear as | |
1396 | the server being out of addresses in pools with particular ranges. | |
1397 | [ISC-Bugs #26498] | |
57fbc772 | 1398 | |
01a44a77 SR |
1399 | - In the DDNS code handle error conditions more gracefully and add more |
1400 | logging code. The major change is to handle unexpected cancel events | |
1401 | from the DNS client code. | |
1402 | [ISC-Bugs #26287] | |
57fbc772 | 1403 | |
01a44a77 SR |
1404 | - Tidy up the receive calls and eliminate the need for found_pkt. |
1405 | [ISC-Bugs #25066] | |
9a111ee8 | 1406 | |
01a44a77 SR |
1407 | - Add support for Infiniband over sockets to the server and |
1408 | relay code. We've tested this on Solaris and hope to expand | |
1409 | support for Infiniband in the future. This patch also corrects | |
1410 | some issues we found in the socket code. | |
1411 | [ISC-Bugs #24245] | |
197c917e | 1412 | |
01a44a77 SR |
1413 | - Add a compile time check for the presence of the noreturn attribute |
1414 | and use it for log_fatal if it's available. This will help code | |
1415 | checking programs to eliminate false positives. | |
1416 | [ISC-Bugs #27539] | |
8bd445a1 | 1417 | |
01a44a77 SR |
1418 | - Fixed many compilation problems ("set, but not used" warnings) for |
1419 | gcc 4.6 that may affect Ubuntu 11.10 users. [ISC-Bugs #27588] | |
83d409ae | 1420 | |
01a44a77 SR |
1421 | - Modify the code that determines if an outstanding DDNS request |
1422 | should be cancelled. This patch results in cancelling the | |
1423 | outstanding request less often. It fixes the problem caused | |
1424 | by a client doing a release where the TXT and PTR records | |
1425 | weren't removed from the DNS. | |
1426 | [ISC-BUGS #27858] | |
6aaaf6a4 | 1427 | |
01a44a77 SR |
1428 | - Use offsetof() instead of sizeof() to get the sizes for dhcpv6_relay_packet |
1429 | and dhcpv6_packet in several more places. Thanks to a report from | |
1430 | Bruno Verstuyft and Vincent Demaertelaere of Excentis. | |
1431 | [ISC-Bugs #27941] | |
4e0997c6 | 1432 | |
01a44a77 SR |
1433 | - Remove outdated note in the description of the bootp keyword about the |
1434 | option not satisfying the requirement of failover peers for denying | |
1435 | dynamic bootp clients. | |
1436 | [ISC-bugs #28574] | |
ad59838e | 1437 | |
01a44a77 SR |
1438 | - Multiple items to clean up IPv6 address processing. |
1439 | When processing an IA that we've seen check to see if the | |
1440 | addresses are usable (not in use by somebody else) before | |
1441 | handing it out. | |
1442 | When reading in leases from the file discard expired addresses. | |
1443 | When picking an address for a client include the IA ID in | |
1444 | addition to the client ID to generally pick different addresses | |
1445 | for different IAs. | |
1446 | [ISC-Bugs #23138] [ISC-Bugs #27945] [ISC-Bugs #25586] | |
1447 | [ISC-Bugs #27684] | |
f33dc722 | 1448 | |
01a44a77 SR |
1449 | - Remove unnecessary checks in the lease query code and clean up |
1450 | several compiler issues (some dereferences of NULL and treating | |
1451 | an int as a boolean). | |
1452 | [ISC-Bugs #26203] | |
4dc5a6b1 | 1453 | |
01a44a77 SR |
1454 | - Fix the NA and PD allocation code to handle the case where a client |
1455 | provides a preference and the server doesn't have any addresses or | |
1456 | prefixes available. Previously the server ignored the request with | |
1457 | this patch it replies with a NoAddrsAvail or NoPrefixAvail response. | |
1458 | By default the code performs according to the errata of August 2010 | |
1459 | for RFC 3315 section 17.2.2; to enable the previous style see the | |
1460 | section on RFC3315_PRE_ERRATA_2010_08 in includes/site.h. This option | |
1461 | may be removed in the future. | |
1462 | Thanks to Jiri Popelka at Red Hat for the patch. | |
1463 | [ISC-Bugs #22676] | |
3004baba | 1464 | |
01a44a77 SR |
1465 | - Fix up some issues found by static analysis. |
1466 | A potential memory leak and NULL dereference in omapi. | |
1467 | The use of a boolean test instead of a bitwise test in dst. | |
1468 | [ISC-Bugs #28941] | |
3004baba | 1469 | |
01a44a77 SR |
1470 | - Rotate the lease file when running in v6 mode. |
1471 | Thanks to Christoph Moench-Tegeder at Astaro for the | |
1472 | report and the first version of the patch. | |
1473 | [ISC-Bugs #24887] | |
9d97e644 | 1474 | |
01a44a77 SR |
1475 | - Correct code to calculate timing values in client to compare |
1476 | rebind value to infinity instead of renew value. | |
1477 | Thanks to Chenda Huang from H3C Technologies Co., Limited | |
1478 | for reporting this issue. | |
1479 | [ISC-Bugs #29062] | |
23d39ae2 | 1480 | |
01a44a77 SR |
1481 | - Fix some issues in the code for parsing and printing options. |
1482 | [ISC-Bugs #22625] - properly print options that have several fields | |
1483 | followed by an array of something for example "fIa" | |
1484 | [ISC-Bugs #27289] - properly parse options in declarations that have | |
1485 | several fields followed by an array of something for example "fIa" | |
1486 | [ISC-Bugs #27296] - properly determine if we parsed a 16 or 32 bit | |
1487 | value in evaluate_numeric_expression (extract-int). | |
1488 | [ISC-Bugs #27314] - properly parse a zero length option from | |
1489 | a lease file. Thanks to Marius Tomaschewski from SUSE for the report | |
1490 | and prototype patch for this ticket as well as ticket 27289. | |
23d39ae2 | 1491 | |
01a44a77 SR |
1492 | ! Previously the server code was relaxed to allow packets with zero |
1493 | length client ids to be processed. Under some situations use of | |
1494 | zero length client ids can cause the server to go into an infinite | |
1495 | loop. As such ids are not valid according to RFC 2132 section 9.14 | |
1496 | the server no longer accepts them. Client ids with a length of 1 | |
1497 | are also invalid but the server still accepts them in order to | |
1498 | minimize disruption. The restriction will likely be tightened in | |
1499 | the future to disallow ids with a length of 1. | |
1500 | Thanks to Markus Hietava of Codenomicon CROSS project for the | |
9a111ee8 | 1501 | finding this issue and CERT-FI for vulnerability coordination. |
01a44a77 SR |
1502 | [ISC-Bugs #29851] |
1503 | CVE: CVE-2012-3571 | |
0c9d3a81 | 1504 | |
01a44a77 SR |
1505 | ! When attempting to convert a DUID from a client id option |
1506 | into a hardware address handle unexpected client ids properly. | |
1507 | Thanks to Markus Hietava of Codenomicon CROSS project for the | |
9a111ee8 | 1508 | finding this issue and CERT-FI for vulnerability coordination. |
01a44a77 SR |
1509 | [ISC-Bugs #29852] |
1510 | CVE: CVE-2012-3570 | |
e1a40211 | 1511 | |
01a44a77 SR |
1512 | ! A pair of memory leaks were found and fixed. Thanks to |
1513 | Glen Eustace of Massey University, New Zealand for finding | |
1514 | this issue. | |
1515 | [ISC-Bugs #30024] | |
1516 | CVE: CVE-2012-3954 | |
e7e17397 | 1517 | |
01a44a77 SR |
1518 | - Existing legacy unit-tests have been migrated to Automated Test |
1519 | Framework (ATF). Several new tests have been developed. To enable | |
1520 | unit-tests, please use --with-atf in configure script. A Developer's | |
1521 | Guide has been added. To generate it, please use make devel in | |
1522 | the doc directory. It is currently in early stages of development, | |
1523 | but is expected to grow in the near future. [ISC-Bugs 25901] | |
ef86959b | 1524 | |
01a44a77 SR |
1525 | ! An issue with the use of lease times was found and fixed. Making |
1526 | certain changes to the end time of an IPv6 lease could cause the | |
1527 | server to abort. Thanks to Glen Eustace of Massey University, | |
1528 | New Zealand for finding this issue. | |
1529 | [ISC-Bugs #30281] | |
1530 | CVE: CVE-2012-3955 | |
ef86959b | 1531 | |
01a44a77 SR |
1532 | - Update the memory leakage debug code to work with v6. |
1533 | [ISC-Bugs #30297] | |
919f1407 | 1534 | |
01a44a77 SR |
1535 | - Relax the requirements for deleting an A or AAAA record. |
1536 | Previously the DDNS removal code required both the A or AAAA | |
1537 | record and the TXT record to exist. This requirement could | |
1538 | cause problems if something interrupted the removal leaving | |
1539 | the TXT record alone. This relaxation was codified in RFC 4703. | |
1540 | [ISC-Bugs #30734] | |
8a0d9ca4 | 1541 | |
01a44a77 SR |
1542 | - Modify the failover code to handle incorrect peer names |
1543 | better. Previously the structure holding the name might | |
1544 | have been freed inappropriately in some cases and not | |
1545 | freed in other cases. | |
1546 | [ISC-Bugs #30320] | |
17a8f0e2 | 1547 | |
01a44a77 SR |
1548 | - Add a configure option, enable-secs-byteorder, to deal with |
1549 | clients that do the byte ordering on the secs field incorrectly. | |
1550 | This field should be in network byte order but some clients | |
1551 | get it wrong. When this option is enabled the server will examine | |
1552 | the secs field and if it looks wrong (high byte non zero and low | |
1553 | byte zero) swap the bytes. The default is disabled. This option | |
1554 | is only useful when doing load balancing within failover. | |
1555 | [ISC-Bugs #26108] | |
badc999d | 1556 | |
01a44a77 SR |
1557 | - Fix a set of issues that were discovered via a code inspection |
1558 | tool. Thanks to Jiri Popelka and Tomas Hozza Red Hat for the logs | |
1559 | and patches. | |
1560 | [ISC-Bugs #23833] | |
0d8c3d6e | 1561 | |
9a111ee8 | 1562 | - Parsing unquoted base64 strings improved. Parser now properly handles |
01a44a77 | 1563 | strings that contain reserved names. [ISC-Bugs #23048] |
1e05d095 | 1564 | |
01a44a77 SR |
1565 | - Modify the nak_lease function to make some attempts to find a |
1566 | server-identifier option to use for the NAK. | |
1567 | [ISC-Bugs #25689] | |
1e05d095 | 1568 | |
01a44a77 SR |
1569 | - The client now passes information about the options it requested |
1570 | from the server to the script code via environment variables. | |
1571 | These variables are of the form requested_<option_name>=1 with | |
1572 | the option name being the same as used in the new_* and old_* | |
1573 | variables. | |
1574 | [ISC-Bugs #29068] | |
1943bbf8 | 1575 | |
01a44a77 SR |
1576 | - Add support for a simple check that the server id in a request message |
1577 | to a failover peer matches the server id of the server. This support | |
1578 | is enabled by editing the file includes/site.h and uncommenting the | |
1579 | definition for SERVER_ID_CHECK. The option has several restrictions | |
1580 | and issues - please read the comment in the site.h file before | |
1581 | enabling it. | |
1582 | [ISC-Bugs #31463] | |
8a513c43 | 1583 | |
01a44a77 SR |
1584 | - Tidy up some compiler issues in the debug code. |
1585 | [ISC-Bugs #26460] | |
d122accf | 1586 | |
adb95d23 | 1587 | - Move the dhcpd.conf example file to dhcpd.conf.example to avoid |
01a44a77 SR |
1588 | overwriting the dhcpd.conf file when installing a new version of |
1589 | ISC DHCP. The user will now need to manual copy and edit the | |
1590 | dhcpd.conf file as desired. | |
1591 | [ISC-Bugs #19337] | |
0d8c3d6e | 1592 | |
01a44a77 SR |
1593 | - Check the status value when trying to read from a connection to |
1594 | see if it may have been closed. If it appears closed don't try | |
1595 | to read from it again. This avoids a potential busy-wait like | |
1596 | loop when the peer names are mismatched. | |
1597 | [ISC-Bugs #31231] | |
590298e7 | 1598 | |
01a44a77 SR |
1599 | - Remove an unused variable to keep compilers happy. |
1600 | [ISC-Bugs #31983] | |
2b58b865 | 1601 | |
01a44a77 SR |
1602 | - Modify test makefiles to be more similar to standard makefiles |
1603 | and comment out a currently unused test. | |
1604 | [ISC-Bugs #32089] | |
600ee619 | 1605 | |
01a44a77 SR |
1606 | - Address static analysis warnings. |
1607 | [ISC-Bugs #33510] [ISC-Bugs #33511] | |
a5c7bf77 | 1608 | |
01a44a77 SR |
1609 | - Silence benign static analysis warnings. |
1610 | [ISC-Bugs #33428] | |
a5c7bf77 | 1611 | |
01a44a77 SR |
1612 | - Add check for 64-bit package for atf. |
1613 | [ISC-Bugs #32206] | |
a5c7bf77 | 1614 | |
01a44a77 SR |
1615 | - Use newer auto* tool packages and turn on RFC_3542 support on Mac OS. |
1616 | [ISC-Bugs #26303] | |
a5c7bf77 | 1617 | |
01a44a77 SR |
1618 | - Remove a variable when it isn't being used due to #ifdefs to avoid |
1619 | a compiler warning on Solaris using GCC. | |
1620 | [ISC-Bugs #33032] | |
0585235c | 1621 | |
01a44a77 SR |
1622 | - Add a check for too much whitespace in a config or lease file. |
1623 | Thanks to Paolo Pellegrino for finding the issue and a suggestion | |
1624 | for the patch. | |
1625 | [ISC-Bugs #33351] | |
0585235c | 1626 | |
01a44a77 SR |
1627 | - Fix several problems with using OMAPI to manipulate class and subclass |
1628 | objects. | |
1629 | [ISC-Bugs #27452] | |
f4bc8261 | 1630 | |
01a44a77 SR |
1631 | - Added a sleep call after killing the old client to allow time |
1632 | for the sockets to be cleaned. This should allow the -r option | |
1633 | to work more consistently. | |
1634 | [ISC-Bugs #18175] | |
33692791 | 1635 | |
01a44a77 SR |
1636 | - Missing files for ISC DHCP Developer's Guide are now included in |
1637 | the release tarballs. To generate this documentation, please use | |
1638 | make devel command in doc directory. [ISC-Bugs #32767] | |
928618dd | 1639 | |
01a44a77 SR |
1640 | - Update client script for use with openwrt. |
1641 | [ISC-Bugs #29843] | |
928618dd | 1642 | |
01a44a77 SR |
1643 | - Fix the socket handling for DHCPv6 clients to allow multiple instances |
1644 | of a client on a single machine to work properly. Previously only | |
1645 | one client would receive the packets. Thanks to Jiri Popelka at Red Hat | |
1646 | for the bug report and a potential patch. | |
1647 | [ISC-Bugs #34784] | |
3c941d42 | 1648 | |
01a44a77 SR |
1649 | - Added support for gentle shutdown after signal is received. |
1650 | [ISC-Bugs #32692] [ISC-Bugs 34945] | |
bdd8e747 | 1651 | |
01a44a77 SR |
1652 | - Enhance the DHCPv6 server logging to include the addresses that are assigned |
1653 | to the clients. | |
1654 | [ISC-Bugs #26377] | |
3da71461 | 1655 | |
01a44a77 SR |
1656 | - Fix an operation in the DDNS code to be a bitwise instead of logical or. |
1657 | [ISC-Bugs #35138] | |
fdfebedf | 1658 | |
7aa153b8 | 1659 | |
adbef119 DH |
1660 | Changes since 4.1.0 (new features) |
1661 | ||
d340bc24 DH |
1662 | - Failover port configuration can now be left to defaults (port 647) as |
1663 | described in the -12 revision of the Failover draft (and assigned by | |
4b97eaff | 1664 | IANA). Thanks in part to a patch from David Cantrell at Red Hat. |
adbef119 | 1665 | |
0829d595 DH |
1666 | - If configured, dhclient may now transmit to an anycast MAC address, |
1667 | rather than using a broadcast address. Thanks to a patch from David | |
1668 | Cantrell at Red Hat. | |
1669 | ||
8a3c1e33 PS |
1670 | - Added client support for setting interface MTU and metric, thanks to |
1671 | Roy "UberLord" Marples <roy@marples.name>. | |
1672 | ||
a41d7a25 PS |
1673 | - Added client -D option to specify DUID type to send. |
1674 | ||
9e3eb22a DH |
1675 | - A new failover configuration parameter has been introduced for those |
1676 | environments where DHCP servers can be reasonably guaranteed to be | |
1677 | "down" when the failover TCP socket is severed, "auto-partner-down". | |
1678 | This parameter is not generally safe, and by default is disabled, so | |
1679 | please carefully review the documentation of this parameter in the | |
1680 | dhcpd.conf(5) manpage before determining to use it yourself. | |
1681 | ||
33ea4622 DH |
1682 | - Added a configuration function, 'gethostname()', which calls the system |
1683 | function of the same name and presents the results as a data expression. | |
1684 | This function can be used to incorporate the system level hostname of | |
1685 | the system the DHCP software is operating on in responses or queries (such | |
1686 | as including a failover partner's hostname in a dhcp message or binding | |
1687 | scope, or having a DHCP client send any system hostname in the host-name or | |
1688 | FQDN options by default). | |
1689 | ||
5a671e87 DH |
1690 | - The dhcp-renewal-time and dhcp-rebinding-time options may now be configured |
1691 | for DHCPv4 operation and used independently of the dhcp-lease-time | |
1692 | calculations. Invalid renew and rebinding times (e.g., greater than the | |
1693 | determined lease time) are omitted. | |
1694 | ||
adb95d23 | 1695 | - Processing the DHCP to DNS server transactions in an asynchronous fashion, |
45adf35c | 1696 | the DHCP server or client can now continue with its processing while |
98bf1607 | 1697 | awaiting replies from the DNS server. |
c900c5b2 DH |
1698 | |
1699 | - The 'hardware [ethernet|etc] ...;' parameter in host records has been | |
1700 | extended to attempt to match DHCPv6 clients by the last octets of a | |
1701 | DUID-LL or DUID-LLT provided by the client. | |
1702 | ||
59112e84 SR |
1703 | Changes since 4.1.0 (bug fixes) |
1704 | ||
62f6843d MA |
1705 | - Remove infinite loop in token_print_indent_concat(). |
1706 | ||
59112e84 SR |
1707 | - Validate the argument to the -p option. |
1708 | ||
47e6eb82 DH |
1709 | - The notorious 'option <unknown> ... larger than buffer' log line, |
1710 | which is seen in some malformed DHCP client packets, was modified. | |
1711 | It now logs the universe name, and does not log the length values | |
1712 | (which are bogus corruption read from the packet anyway). It also | |
1713 | carries a hopefully more useful explanation. | |
1714 | ||
159c89d7 EH |
1715 | - Suppress spurious warnings from configure about --datarootdir |
1716 | ||
1aa0fe5e DH |
1717 | - A bug was fixed that caused the server not to answer some valid Solicit |
1718 | and Request packets, if the dynamic range covering any requested addresses | |
1719 | had been deleted from configuration. | |
1720 | ||
cd51403d SR |
1721 | - Update the code to deal with GCC 4.3. This included two sets of changes. |
1722 | The first is to the configuration files to include the use of | |
571c38b0 | 1723 | AC_USE_SYSTEM_EXTENSIONS. The second is to deal with return values that |
cd51403d SR |
1724 | were being ignored. |
1725 | ||
64e1823d DH |
1726 | - The db-time-format option was documented in manpages. |
1727 | ||
26e59ee9 DH |
1728 | - Using reserved leases no longer results in 'lease with binding state |
1729 | free not on its queue' error messages, thanks to a patch from Frode | |
1730 | Nordahl. | |
1731 | ||
70ea9345 PS |
1732 | - Fix a build error in dhcrelay, using older versions of gcc with |
1733 | dhcpv6 disabled. | |
1734 | ||
8d7dca58 | 1735 | - Two uninitialized stack structures are now memset to zero, thanks to a |
4b97eaff | 1736 | patch from David Cantrell at Red Hat. |
819186b7 | 1737 | |
f4534b17 DH |
1738 | - Fixed a cosmetic bug where pretty-printing valid domain-search options would |
1739 | result in an erroneous error log message ('garbage in format string'). | |
1740 | ||
f9453d21 DH |
1741 | - A bug in DLPI packet transmission (Solaris, HP/UX) that caused the server |
1742 | to stop receiving packets is fixed. The same fix also means that the MAC | |
1743 | address will no longer appear 'bogus' on DLPI-based systems. | |
1744 | ||
1745 | - A bug in select handling was discovered where the results of one select() | |
1746 | call were discarded, causing the server to process the next select() call | |
1747 | and use more system calls than required. This has been repaired - the | |
1748 | sockets will be handled after the first return from select(), resulting in | |
1749 | fewer system calls. | |
1750 | ||
a3dcc0b1 DH |
1751 | - The update-conflict-detection feature would leave an FQDN updated without |
1752 | a DHCID (still currently implemented as a TXT RR). This would cause later | |
1753 | expiration or release events to fail to remove the domain name. The feature | |
1754 | now also inserts the client's up to date DHCID record, so records may safely | |
1755 | be removed at expiration or release time. Thanks to a patch submitted by | |
1756 | Christof Chen. | |
1757 | ||
95fd7038 DH |
1758 | - Memory leak in the load_balance_mine() function is fixed. This would |
1759 | leak ~20-30 octets per DHCPDISCOVER packet while failover was in use | |
1760 | and in normal state. | |
1761 | ||
1762 | - Various compilation fixes have been included for the memory related | |
1763 | DEBUG #defines in includes/site.h. | |
1764 | ||
8a3c1e33 PS |
1765 | - Fixed Linux client script 'unary operator expected' errors with DHCPv6. |
1766 | ||
1767 | - Fixed setting hostname in Linux hosts that require hostname argument | |
1768 | to be double-quoted. Also allow server-provided hostname to | |
1769 | override hostnames 'localhost' and '(none)'. | |
1770 | ||
dedde1ba DH |
1771 | - Fixed failover reconnection retry code to continue to retry to reconnect |
1772 | rather than restarting the listener. | |
1773 | ||
a57df74a DH |
1774 | - Compilation on Solaris with USE_SOCKETS defined in includes/site.h has |
1775 | been repaired. Other USE_ overrides should work better. | |
1776 | ||
1777 | - A check for the local flavor of IFNAMSIZ had a broken 'else' condition, | |
1778 | that probably still resulted in the correct behaviour (but wouldn't use | |
1779 | a larger defined value provided by the host OS). | |
1780 | ||
350576c5 DH |
1781 | - Fixed a bug where an OMAPI socket disconnection message would not result |
1782 | in scheduling a failover reconnection, if the link had not negotiated a | |
1783 | failover connect yet (e.g.: connection refused, asynch socket connect() | |
1784 | timeouts). | |
1785 | ||
792156a9 DH |
1786 | - A bug was fixed that caused the 'conflict-done' state to fail to be parsed |
1787 | in failover state records. | |
1788 | ||
8a4e543b DH |
1789 | ! A stack overflow vulnerability was fixed in dhclient that could allow |
1790 | remote attackers to execute arbitrary commands as root on the system, | |
1791 | or simply terminate the client, by providing an over-long subnet-mask | |
1b12d999 | 1792 | option. CERT VU#410676 - CVE-2009-0692 |
8a4e543b | 1793 | |
a1308b64 DH |
1794 | - Fixed a bug where relay agent options would never be returned when |
1795 | processing a DHCPINFORM. | |
1796 | ||
1b12d999 DH |
1797 | - Versions 3.0.x syntax with multiple name->code option definitions is now |
1798 | supported. Note that, similarly to 3.0.x, for by-code lookups only the | |
1799 | last option definition is used. | |
1800 | ||
d453265f PS |
1801 | - Fixed a bug where a time difference of greater than 60 seconds between a |
1802 | failover pair could cause the primary to crash on contact with the | |
1803 | secondary. Thanks to a patch from Steinar Haug. | |
1804 | ||
3e29af1e PS |
1805 | - Don't look for IPv6 interfaces on Linux when running in DHCPv4 mode. |
1806 | Thanks to patches from Matthew Newton and David Cantrell. | |
1807 | ||
b8d45c67 DH |
1808 | - Secondary servers in a failover pair will now perform ddns removals if |
1809 | they had performed ddns updates on a lease that is expiring, or was | |
1810 | released through the primary. As part of the same fix, stale binding scopes | |
1811 | will now be removed if a change in identity of a lease's active client is | |
1812 | detected, rather than simply if a lease is noticed to have expired (which it | |
1813 | may have expired without a failover server noticing in some situations). | |
1814 | ||
583c1c16 DH |
1815 | - A patch supplied by David Cantrell at RedHat was applied that detects |
1816 | invalid calling parameters given to the ns_name_ntop() function. | |
1817 | Specifically, it detects if the caller passed a pointer and size pair | |
1818 | that causes the pointer to integer-wrap past zero. | |
1819 | ||
e4e3a2ab DH |
1820 | ! Fixed a fenceposting bug when a client had two host records configured, |
1821 | one using 'uid' and the other using 'hardware ethernet'. CVE-2009-1892 | |
95f5d38c | 1822 | |
875e99dc SR |
1823 | - Fixed the check in the dhcp_interface_signal_handler routine to verify |
1824 | the existence of the linked signal handler before calling it. | |
1825 | ||
2267da84 DH |
1826 | - Both host and subnet6 configuration groups are now included whether a |
1827 | fixed-address6 (DHCPv6) is in use or not. Host scoped configuration takes | |
1828 | precedence. This fixes two bugs, one where host scoped configuration | |
1829 | would not be included from a non-fixed-address6 host record, and the equal | |
1830 | and opposite bug where subnet6 scoped configuration would not be used when | |
571c38b0 | 1831 | over-riding values were not present in a matching fixed-address6 host |
2267da84 DH |
1832 | configuration. |
1833 | ||
cd3f0b9b DH |
1834 | - ./configure now checks to ensure the intX_t and u_intX_t types are defined, |
1835 | correcting a compilation failure when using Sun's compiler. | |
1836 | ||
0493fdca SR |
1837 | - Modified the handling of a connection to avoid releasing the omapi io |
1838 | object for the connection while it is still in use. One symptom from | |
1839 | this error was a segfault when a failover secondary attempted to connect | |
1840 | to the failover primary if their clocks were not synchronized. | |
1841 | ||
95bba8b6 SR |
1842 | - Clean up to allow compilation with gcc 2.95.4 on FreeBSD. Remove an |
1843 | extra semi-colon from common/dns.c and moved setting a variable to NULL | |
1844 | in server/dhcpv6.c to allow the compiler to decide that the variable | |
9a111ee8 | 1845 | was always properly set. |
95bba8b6 | 1846 | |
adbef119 | 1847 | Changes since 4.1.0b1 |
ebf076fe EH |
1848 | |
1849 | - A missing "else" in dhcrelay.c could have caused an interface not to | |
1850 | be recognized. | |
61d75ea2 | 1851 | |
a4ffedd1 DH |
1852 | Changes since 4.1.0a2 |
1853 | ||
1854 | - A cosmetic bug in DHCPDECLINE processing was fixed which caused all | |
1855 | successful DHCPDECLINEs to be logged as "not found" rather than | |
1856 | "abandoned". | |
1857 | ||
6ff3b26d FD |
1858 | - Added configuration file examples for DHCPv6. |
1859 | ||
1387545f DH |
1860 | - Some failover debugging #defines have been better defined and some |
1861 | high frequency messages moved to a deeper debugging symbol. | |
1862 | ||
1863 | - The CLTT parameter in failover is now only updated by client activity, | |
1864 | and not by failover binding updates (taking on the peer's CLTT). | |
1865 | ||
1866 | - Failover BNDUPD messages are now discarded if they conflict with an | |
d7ac7a27 | 1867 | update that has been transmitted, but not acknowledged. |
1387545f | 1868 | |
399d3dbe DH |
1869 | - A bug cleaning up unknown-xxx temporary option definitions was fixed. |
1870 | ||
fbcee149 DH |
1871 | - Delayed-ack is now a compile-time option, compiled out by default. |
1872 | This feature is simply too experimental for right now, and causes | |
1873 | some problems to some failover installations. We will revisit this | |
1874 | in future releases. | |
1875 | ||
f1672d89 DH |
1876 | - The !inet_pton() call in res_mkupdrec was adjusted to '<= 0' as |
1877 | inet_pton returns either 1, 0, or -1. | |
1878 | ||
236d3a99 DH |
1879 | - A dhclient-script for MacOS X has been included, which enables |
1880 | 'dhclient -6' support. | |
1881 | ||
efa5e6b9 DH |
1882 | - DDNS removal routines were updated so that the DHCID is not removed until |
1883 | the client has been deprived of all A and AAAA records (not only the last | |
1884 | one of either of those). This resolves a bug where dual stack clients | |
1885 | would not be able to regain their names after either expiration event. | |
1886 | ||
7d6180be | 1887 | Changes since 4.1.0a1 |
edcb5c46 EH |
1888 | |
1889 | - Corrected list of failover state values in dhcpd man page. | |
1890 | ||
51e7687f EH |
1891 | - Fixed a bug that caused some request types to be logged incorrectly. |
1892 | ||
20210a7b EH |
1893 | - Clients that sent a parameter request list containing the |
1894 | routers option before the subnet mask option were receiving | |
1895 | only the latter. Fixed. | |
1896 | ||
535485df EH |
1897 | - The server wasn't always sending the FQDN option when it should. |
1898 | ||
8fbb55ff DH |
1899 | - A partner-down failover server no longer emits 'peer holds all free leases' |
1900 | if it is able to newly-allocate one of the peer's leases. | |
1901 | ||
61220a00 EH |
1902 | - Fixed a coredump when adding a class via OMAPI. |
1903 | ||
c40e954c EH |
1904 | - Check whether files are zero length before trying to parse them. |
1905 | ||
63971a83 DH |
1906 | - Ari Edelkind's PARANOIA patch has been included and may be compiled in |
1907 | via two ./configure parameters, --enable-paranoia and | |
1908 | --enable-early-chroot. | |
1909 | ||
66cebfcb DH |
1910 | - ./configure was extended to cover many optional build features, such |
1911 | as failover, server tracing, debugging, and the execute() command. | |
1912 | ||
f8cbf390 DH |
1913 | - There is now a default 1/4 of a second scheduled delay between delayed |
1914 | fsync()'s, it can be configured by the max-ack-delay configuration | |
1915 | parameter. | |
1916 | ||
8269561d DH |
1917 | - A bug was fixed where the length of a hostname was miscalculated, so that |
1918 | hosts were given odd-looking domain names ("foo.bar.ba.example.com"). | |
1919 | ||
b445a411 DH |
1920 | - Shared network selection should be done from the innermost relay |
1921 | valid link-address field, rather than the outermost. | |
1922 | ||
bd72740e FD |
1923 | - Prefix pools are attached to shared network scopes. |
1924 | ||
9322442f FD |
1925 | - Merged IA_XX related structures. |
1926 | ||
8dea7ba7 FD |
1927 | - Add DHCPv6 files in configure. |
1928 | ||
4619c0a2 DH |
1929 | - A memory leak when using omapi has been fixed. |
1930 | ||
9ac4206a DH |
1931 | - DHCPv6 vendor-class options (VSIO) are now only sent when they appear |
1932 | on the DHCPv6 ORO. This resolves a bug where VSIO options were placed | |
1933 | in IA_NA encapsulated options fields. | |
1934 | ||
420d8b3f FD |
1935 | - Integrated client with stateless, temporary address and prefix delegation |
1936 | support. | |
1937 | ||
40ec5f38 DH |
1938 | - A double-dereference in dhclient transmission of DHCPDECLINEs was |
1939 | repaired. | |
1940 | ||
80097764 FD |
1941 | - Fix handling of format code 'Z'. |
1942 | ||
ffbaa880 FD |
1943 | - Support "-1" argument in DHCPv6. |
1944 | ||
7de20a95 EH |
1945 | - Merge DHCPv6-only "dhcrelay6" into general-purpose "dhcrelay" (use |
1946 | "-6" option to select DHCPv6 mode). | |
1947 | ||
d352732e EH |
1948 | - Fix handling of -A and -a flags in dhcrelay; it was failing to expand |
1949 | packet size as needed to add relay agent options. | |
1950 | ||
7d6180be DH |
1951 | - A bug in subnet6 parsing where options contained in subnet6 clauses would |
1952 | not be applied to clients addressed within that network was repaired. | |
1953 | ||
1954 | - When configuring a "subnet {}" or "subnet6 {}" without an explicit | |
1955 | shared-network enclosing it, the DHCP software would synthesize a | |
1956 | shared-network to contain the subnet. However, all configuration | |
1957 | parameters within the subnet more intuitively belong "to any client | |
1958 | on that interface", or rather the synthesized shared-network. So, | |
1959 | when a shared-network is synthesized, it is used to contain the | |
1960 | configuration present inside the subnet {} clause. This means that | |
1961 | the configuration will be valid for all clients on that network, not | |
1962 | just those addressed out of the stated subnet. If you intended the | |
1963 | opposite, the workaround is to explicitly configure an empty | |
1964 | shared-network. | |
1965 | ||
1966 | - A bug was fixed where Information-Request processing was not sourcing | |
1967 | configured option values. | |
1968 | ||
1969 | - A warning was added since the DHCPv6 processing software does not yet | |
1970 | support class statements. | |
1971 | ||
adb95d23 | 1972 | - Compilation warnings on GCC 4.3 relating to bootp source address |
dd484ced DH |
1973 | selection were repaired. |
1974 | ||
ecddae64 DH |
1975 | - The v6 BSD socket method was updated to use a single UDP BSD socket |
1976 | no matter how many interfaces are involved, differentiating the | |
1977 | interfaces the packets were received on by the interface index supplied | |
1978 | by the OS. | |
1979 | ||
1980 | - The relay agent no longer listens to the All DHCP Servers Multicast | |
1981 | address. | |
1982 | ||
1983 | - A bug was fixed in data_string_sprintfa() where va_start was only called | |
1984 | once for two invocations of vsprintf() variants. | |
1985 | ||
d104d45b DH |
1986 | - ERO (RFC 4994) server support. |
1987 | ||
1988 | - Basic and partial DHCPv6 leasequery support. | |
1989 | ||
1990 | - Reliable DHCPv6 release (previous behavior, send release and exit, is | |
1991 | still available with dhclient -6 -1 -r). | |
1992 | ||
01a54c17 | 1993 | Changes since 4.0.0 (new features) |
3c12f746 | 1994 | |
6d7f9584 FD |
1995 | - Added DHCPv6 rapid commit support. |
1996 | ||
4cafb815 | 1997 | - Added explicit parser support for zero-length DHCP options, such as |
6d7f9584 | 1998 | rapid-commit, via format code 'Z'. |
4cafb815 | 1999 | |
022fe95e EH |
2000 | - It's now possible to update the "ends" field of a lease with OMAPI. |
2001 | This is useful if you want not only to release a lease, but also make | |
2002 | it available for reuse right away. Hat tip to Christof Chen. | |
2003 | ||
9a111ee8 | 2004 | - Fixed definition of the iaaddr hash functions to use the correct |
1dcc3612 SK |
2005 | functions when referencing and dereferencing memory. |
2006 | ||
aabfa4de FD |
2007 | - Some definitions not in phase with the IANA registry were updated. |
2008 | ||
0674055a FD |
2009 | - Allocated interface IDs are better controlled ('u' bit set to zero, |
2010 | reserved IDs avoided). | |
2011 | ||
b51c785f FD |
2012 | - Unicast options are taken into account only for RENEWs. |
2013 | ||
900405e9 FD |
2014 | - NoAddrsAvail answers to SOLICITs are always ADVERTISEs even when a SOLICIT |
2015 | carries a rapid-commit option. | |
2016 | ||
96b620e5 FD |
2017 | - Return in place of raise an impossible condition when one tries to release |
2018 | an empty active lease. | |
2019 | ||
be62cf06 FD |
2020 | - Timer granularity is now 1/100s in the DHCPv6 client. |
2021 | ||
01a54c17 EH |
2022 | - The dhclient-script was updated to create a host route for the default |
2023 | gateway if the supplied subnet mask for an IPv4 address was a /32. This | |
2024 | allows the client to work in 'captive' network environments, where the | |
2025 | operator does not want clients to crosstalk directly. | |
2026 | ||
adb95d23 | 2027 | - MINUS tokens should be parsable again. |
01a54c17 EH |
2028 | |
2029 | - Multiple (up to "delayed-ack x;" maximum) DHCPv4 packets are now queued and | |
2030 | released in bursts after single fsync() events when the upper limit is | |
2031 | reached or if the receiving sockets go dry. The practical upshot is | |
2032 | that fsync-coupled server performance is now multiplicitively increased. | |
2033 | The default delayed ack limit is 28. Thanks entirely to a patch from | |
2034 | Christof Chen. | |
2035 | ||
2036 | Changes since 4.0.0 (bug fixes) | |
2037 | ||
2038 | - DHCP now builds on AIX. | |
2039 | ||
2040 | - Exit with warning when DHCPv6-specific statements are used in the | |
2041 | config file but -6 is not specified. | |
2042 | ||
2043 | - Fixed "--version" flag in dhcrelay | |
2044 | ||
2045 | - The 'min-secs' configuration parameter's log message has been updated to | |
2046 | be more helpful. | |
2047 | ||
2048 | - The warning logged when an address range doesn't fit in the subnets | |
2049 | they were declared has been updated to be more helpful and identify the | |
2050 | typo in configuration that created the spanning addresses. | |
2051 | ||
2052 | - A bug in failover pool rebalancing that caused POOLREQ message ping-pongs | |
2053 | was repaired. | |
2054 | ||
2055 | - A flaw in failover pool rebalancing that could cause POOLREQ messages to | |
2056 | be sent outside of the min-balance/max-balance scheduled intervals has | |
2057 | been repaired. | |
2058 | ||
2059 | - A cosmetic bug during potential-conflict recovery that caused the peer's | |
2060 | 'conflict-done' state message to be logged as 'unknown-state' has been | |
2061 | repaired. It is now logged correctly. | |
2062 | ||
49f61135 DH |
2063 | - A bug was fixed where the 'giaddr' may be used to find the client's subnet |
2064 | rather than its own 'ciaddr'. | |
2065 | ||
41d4652f DH |
2066 | - A log message was introduced to clarify the situation where a failover |
2067 | 'address' parameter (the server's local address) did not resolve to an | |
2068 | IPv4 address. | |
2069 | ||
2c9bf1f4 DH |
2070 | - The minimum site code value was set to 224 in 3.1.0 to track RFC3942. This |
2071 | broke a lot of legacy site local configurations. The new code in place will | |
2072 | track site local space minimum option codes and logs a warning to encourage | |
2073 | updates and exploration of site local code migration problems. Option | |
2074 | codes less than 128 in site local spaces remain inaccessible. | |
2075 | ||
2076 | - A possible relay agent option bug was repaired where random server | |
2077 | initialization state may have been used to signal the relay agent | |
2078 | information options sub-option code for the 'END' of the option space. | |
2079 | ||
cff9b78f SK |
2080 | - Fixes to allow code to compile and run on Solaris 9. |
2081 | ||
c4d29896 SK |
2082 | - Fixes to allow code to compile on Mac OS X Leopard (10.5). |
2083 | ||
57fcb8d9 SK |
2084 | - When server is configured with options that it overrides, a warning is |
2085 | issued when the configuration file is read, rather than at the time the | |
2086 | option is overridden. This was important, because the warning was given | |
9a111ee8 | 2087 | every time the option was overridden, which could create a lot of |
57fcb8d9 SK |
2088 | unnecessary logging. |
2089 | ||
219a65eb DH |
2090 | - Fixed a compilation problems on platforms that define a value for FDDI, |
2091 | which conflicts with a dhcp configuration syntax token by the same name. | |
2092 | ||
ffdf3c8c DH |
2093 | - When a failover server suspects it has encountered a peer running a |
2094 | version 3.0.x failover server, a warning that the failover wire protocol | |
2095 | is incompatible is printed. | |
2096 | ||
2097 | - The failover server no longer issues a floating point error if it encounters | |
2098 | a previously undefined option code. | |
2099 | ||
00a002fc MA |
2100 | - Fix startup error messages to report a missing "subnet6 declaration", rather |
2101 | than a missing "subnet declaration", when running as a DHCPv6 server. | |
2102 | ||
9a111ee8 | 2103 | - DHCPv6 client timestamp in DUID was based on the year 1970 rather |
7e9f7a1b FD |
2104 | than the year 2000. |
2105 | ||
e2cfde76 FD |
2106 | - Warn when attempting to use a hardware parameter in DHCPv6. |
2107 | ||
cabdb9b1 FD |
2108 | - DHCPv6 released resources are now marked as released by the client. |
2109 | ||
5d89d60f FD |
2110 | - 'Soft' bindings have no more side-effects. |
2111 | ||
61d75ea2 DH |
2112 | Changes since 4.0.0b3 |
2113 | ||
2114 | - The reverse dns name for PTR updates on IPv6 addresses has been fixed to | |
2115 | use ip6.arpa. rather than default to in-addr.arpa and require user | |
2116 | configuration. | |
76db44f9 | 2117 | |
e32529a5 EH |
2118 | - dhc6_lease_destroy() and dhc6_ia_destroy() now set lease and IA pointers |
2119 | to NULL after freeing, to prevent subsequent accesses to freed memory. | |
2120 | ||
9a111ee8 | 2121 | - The DHCPv6 server would not send the preference option unless the |
76db44f9 SK |
2122 | client requested it, via the ORO. This has been fixed, so the DHCPv6 |
2123 | server will always send the preference value if it is configured. | |
e4a6be15 | 2124 | |
9a111ee8 TM |
2125 | - When addresses were passed as hints to the server in an IA, they were |
2126 | incorrectly handled, sometimes being treated as an error. Now the | |
6f76de58 SK |
2127 | server will treat these as hints and ignore them if it cannot supply |
2128 | a requested address. | |
2129 | ||
703873ab DH |
2130 | - If the client had multiple addresses, and one expired (was not renewed |
2131 | by the server), the client would continue to attempt to renew the same | |
2132 | old address over and over. Now, the client will omit any expired | |
2133 | addresses from future Confirm, Renew, or Rebind messages. | |
2134 | ||
2135 | - dhclient -6 will now select renew/rebind timers based upon the longest | |
2136 | address expiration time rather than the shortest expiration time, in | |
2137 | order to avoid cascading renewals in the event a server elects not to | |
2138 | extend one of multiple IAADDR leases. | |
2139 | ||
b024480e DH |
2140 | - The server now limits clients that request multiple addresses to one |
2141 | address per IA by default, which can be adjusted through the | |
2142 | "limit-addrs-per-ia" configuration option. | |
2143 | ||
c0216cb7 DH |
2144 | - The DHCPv6 client now issues fresh transaction IDs on Renew and Rebind |
2145 | message exchanges, rather than using the most recent ID. | |
2146 | ||
1ac57173 FD |
2147 | - The DHCPv6 server now replies to Information-Request messages. |
2148 | ||
83835822 DH |
2149 | - A bug was fixed in the dhclient-script for BSDs to correctly carry error |
2150 | codes through some conditions. | |
2151 | ||
c54db708 FD |
2152 | - The parsing of some options in the dhclient lease file, in particular |
2153 | the success DHCPv6 status-code, was fixed. | |
2154 | ||
e5d83524 DH |
2155 | - A bug was fixed that caused the DHCPv6 ORO option to be corrupted with |
2156 | seemingly random values. | |
2157 | ||
821f2dda DH |
2158 | - A reference overleak in DHCPv6 shared network processing was repaired. |
2159 | ||
f8b3c6f4 DH |
2160 | - ./configure now autodetects local database locations rather than trying |
2161 | to put dhcpd.leases and dhclient.leases in /usr/local/var/db, which no | |
2162 | one ever has. | |
2163 | ||
9a111ee8 TM |
2164 | - Regression fix for bug where server advertised a IPv6 address in |
2165 | response to a SOLICIT but would not return the address in response | |
b9137d42 SK |
2166 | to a REQUEST. |
2167 | ||
9f1d5a2f DH |
2168 | - A bug was fixed where the DHCPv6 server puts the NoAddrsAvail status |
2169 | code in the IA_NA was fixed. The status code now appears in the root | |
2170 | level. | |
2171 | ||
e4a6be15 DH |
2172 | Changes since 4.0.0b2 |
2173 | ||
65cf86d7 EH |
2174 | - Clarified error message when lease limit exceeded |
2175 | ||
b1d3778c DH |
2176 | - Relative time may now be used as a qualifier for 'allow' and 'deny' access |
2177 | control lists. These directives may be used to assist in re-addressing | |
2178 | address pools without having to constantly reconfigure the server. Please | |
2179 | see 'man dhcpd.conf' for more information on allow/deny 'after time' syntax. | |
2180 | Thanks to a patch from Christof Chen. | |
2181 | ||
bead14ea DH |
2182 | - The server will now include multiple IA_NA's and multiple IAADDRs within |
2183 | them, if advertised by the client. It still only seeks to allocate one | |
2184 | new address. | |
2185 | ||
f765ec36 SK |
2186 | Changes since 4.0.0b1 |
2187 | ||
75135a3f | 2188 | - Use different paths for PID and lease files when running in DHCPv4 |
adb95d23 | 2189 | or DHCPv6 mode, so that servers for both protocols can be run |
75135a3f EH |
2190 | simultaneously on a single interface. |
2191 | ||
5c2d55c7 EH |
2192 | - Fixed a buffer overflow error which could have allowed a denial |
2193 | of service under unusual server configurations | |
2194 | ||
2195 | - Eliminated a spurious error message from the client | |
2196 | ||
9a111ee8 | 2197 | - A number of bugs with the internal handling of lease state on the |
f765ec36 | 2198 | server have been fixed. Some of these could cause server crashes. |
fa9b593d | 2199 | |
edb1283e DH |
2200 | - The peer_wants_leases() changes pulled up from 3.1.0 were corrected, |
2201 | 'never used' leases will no longer consistently shift between servers | |
2202 | on every pool rebalance run. | |
2203 | ||
c71c6399 DH |
2204 | - sendmsg()/recvmsg() control buffers are now declared in such a way to |
2205 | ensure they are correctly aligned on all (esp. 64-bit) architectures. | |
2206 | ||
5279b8f3 DH |
2207 | - The client leasing subsystem was streamlined and corrected to account |
2208 | more closely for changes in client link attachment selection. | |
2209 | ||
ab3a540f | 2210 | Changes since 4.0.0a3 |
763cba6b | 2211 | |
9a111ee8 | 2212 | - The DHCP server no longer requires a "ddns-update-style" statement, |
884a458f SK |
2213 | and now defaults to "none", which means DNS updates are disabled. |
2214 | ||
fa9b593d DH |
2215 | - Log messages when failover peer names mismatch have been improved to |
2216 | point out the problem. | |
2217 | ||
9a111ee8 | 2218 | - Bug where server advertised a IPv6 address in response to a SOLICIT |
1b5053b5 SK |
2219 | but would not return the address in response to a REQUEST. Thanks to |
2220 | Dennis Kou for finding the bug. | |
2221 | ||
c886c298 SK |
2222 | - Fixed an error causing the server to lock up on lease expiration, |
2223 | reported independently by Jothilingam Vasu and Dennis Kou. | |
2224 | ||
eaf7eb17 DH |
2225 | - Fixed a ./configure bug where compile tests were failing due to |
2226 | "-Werror" (unused variable) rather than the actual test failure. Lead | |
2227 | to inconsistent and unworkable auto-configurations. | |
2228 | ||
109e00db DH |
2229 | - Compilation with DLPI and -Werror has been repaired. |
2230 | ||
9a111ee8 | 2231 | - Error in decoding IA_NA option if multiple interfaces are present |
3ad9d48f SK |
2232 | fixed by Marcus Goller. |
2233 | ||
8eab95f2 DH |
2234 | - DHCPv6 server Confirm message processing has been enhanced - it no |
2235 | longer replies only to clients with host {} records, it now replies | |
2236 | as directed in RFC3315 section 18.2.2 - that is, to all clients | |
2237 | regardless of the existence of bindings. | |
2238 | ||
07b9a351 DH |
2239 | - A core dump during expired lease cleanup has been repaired. |
2240 | ||
7285af30 DH |
2241 | - DDNS updates state information are now stored in 'binding scopes' that |
2242 | follow the leases through their lifecycles. This enables DDNS teardowns | |
2243 | on leases that are assigned and expired inbetween a server restart (the | |
2244 | state is recovered from dhcpd.leases). Arbitrary user-specified binding | |
2245 | scopes ('set var = "value";') are not yet supported. | |
2246 | ||
2394b26b DH |
2247 | - Additional compilation problems on HP/UX have been repaired. |
2248 | ||
ab3a540f SK |
2249 | Changes since 4.0.0a2 |
2250 | ||
97050349 SK |
2251 | - Fix for startup where there are no IPv4 addresses on an interface. |
2252 | Thanks to Marcus Goller for reporting the bug. | |
2253 | ||
763cba6b | 2254 | - Fixed file descriptor leak on listen failure. Thanks to Tom Clark. |
e889ded1 | 2255 | |
237f8d3a | 2256 | - Bug in server configuration parser caused server to get stuck on |
9a111ee8 | 2257 | startup for certain bad pool declarations. Thanks to Guillaume |
237f8d3a SK |
2258 | Knispel for the bug report and fix. |
2259 | ||
28868515 SK |
2260 | - Code cleaned to remove warnings reported by "gcc -Wall". |
2261 | ||
d00d373a SK |
2262 | - DHCPv6 is now the default. You can disable DHCPv6 support using the |
2263 | "--disable-dhcpv6" flag when you run the configure script. | |
2264 | ||
8dfd5744 DH |
2265 | - An internal database inconsistency bug was repaired where the server |
2266 | would segfault if a client attempted to renew a lease that had been | |
2267 | loaded from persistent storage. | |
2268 | ||
45d545f0 | 2269 | - 'request' and 'also request' syntaxes have been added to accommodate |
0c20eab3 DH |
2270 | the DHCPv6 client configuration. 'send dhcp6.oro' is no longer |
2271 | necessary. | |
2272 | ||
9a111ee8 TM |
2273 | - Bug fixed where configuration file parsing did not work with |
2274 | zero-length options; this made it impossible to set the | |
f800f4f6 SK |
2275 | rapid-commit option. |
2276 | ||
845e9677 DH |
2277 | - Bogus messages about host records with IPv4 fixed-addresses being of |
2278 | non-128-bits in length were removed. | |
2279 | ||
76c944da SK |
2280 | Changes since 4.0.0a1 |
2281 | ||
71765b58 SK |
2282 | - Bug in octal parsing fixed. Thanks to Bernd Fuhrmann for the report |
2283 | and fix. | |
2284 | ||
847e7000 SK |
2285 | - Autoconf now supplies proper flags for Solaris DHCPv6 builds. |
2286 | ||
bda33169 SK |
2287 | - Fix for parsing error on some IPv6 addresses. |
2288 | ||
9b21e73e SK |
2289 | - Invalid CIDR representation for IPv6 subnets or ranges now checked |
2290 | for when loading configuration. | |
2291 | ||
8da06bb1 DH |
2292 | - Compilation on HP/UX has been repaired. The changes should generally |
2293 | apply to any architecture that supplies SIOCGLIFCONF but does not | |
2294 | use 'struct lifconf' structures to pass values. | |
2295 | ||
dd328225 DH |
2296 | - Two new operators, ~= and ~~, have been integrated to implement |
2297 | boolean matches by regular expression (such as may be used in | |
2298 | class matching statements). Thanks to a patch by Alexandr S. | |
2299 | Agranovsky, which underwent slight modification. | |
2300 | ||
76c944da SK |
2301 | - Fix for icmp packets on 64-bit systems (bug introduced in 4.0). |
2302 | ||
f796f70a DH |
2303 | - A bug was fixed in interface discovery wherein an error identifying |
2304 | a server-configured interface with no IPv4 addresses would SEGV. | |
76c944da | 2305 | |
c11f349d EH |
2306 | - Fixed a bug in which write_lease() might report a failure incorrectly |
2307 | ||
af5fa176 EH |
2308 | - Added support for DHCPv6 Release messages |
2309 | ||
2310 | - Added -x option to dhclient, which triggers dhclient processes | |
2311 | to exit gracefully without releasing leases first | |
2312 | ||
a546f2a7 EH |
2313 | - All binaries (client, server, relay) now change directories |
2314 | to / before going into daemon mode, so as not to hold $CWD open | |
2315 | ||
b55d0d5f EH |
2316 | - Fixed a bug parsing DHCPv6 client-id's in host-identifier statements |
2317 | ||
26be82af DH |
2318 | - Fixed a bug with the 'ddns-updates' boolean server configuration |
2319 | parameter, which caused the server to fail. | |
2320 | ||
98bd7ca0 DH |
2321 | Changes since 4.0.0-20070413 |
2322 | ||
d9b43370 SK |
2323 | - Old (expired) leases are now cleaned. |
2324 | ||
8c1752d2 DH |
2325 | - IPv6 subnets now have support for arbitrary allocation ranges via |
2326 | a new 'range6' configuration directive. | |
2327 | ||
98bd7ca0 DH |
2328 | - An obviated option code hash lookup to find D6O_CLIENTID was removed. |
2329 | ||
a512d11b DH |
2330 | - Corrected some situations where variables might be used without being |
2331 | initialized. | |
2332 | ||
2333 | - Silenced several other compiler warnings. | |
2334 | ||
2335 | - Include the more standard sys/uio.h rather than rely upon other | |
f66f02cc DH |
2336 | header files to include it (fixes a BSD 4.2 compile failure). |
2337 | ||
2338 | - Duplicate dhclient-script updates for DHCPv6 to all provided scripts. | |
a512d11b | 2339 | |
4ba58919 DH |
2340 | - DHCPv4 I/O methods that failed to sense hardware address were corrected. |
2341 | ||
2342 | - DHCPv4 is now the default (as documented) rather than DHCPv6. The default | |
2343 | was set to DHCPv6 to facilitate ease early development, and forgotten. | |
2344 | ||
2345 | - Corrected a segmentation violation in DHCPv4 socket processing. | |
2346 | ||
8ea19a71 | 2347 | - dhclient will now fork() into the background once it binds to an |
45d545f0 | 2348 | IPv6 address, or immediately if the -n flag is supplied. |
8ea19a71 DH |
2349 | |
2350 | - -q is now the default behaviour on dhclient, with -d or -v enabling | |
2351 | non-quiet (stderr logging) mode. | |
2352 | ||
2cf8d0bd DH |
2353 | - Fix documentation of the domain-search atom (quoted, with commas). |
2354 | ||
2355 | - Document DHCPv6 options presently in the default table. | |
2356 | ||
fe5b0fdd DH |
2357 | - Replaced ./configure shellscripting with GNU Autoconf. |
2358 | ||
98bd7ca0 DH |
2359 | Changes since 3.1.0 (NEW FEATURES) |
2360 | ||
2361 | - DHCPv6 Client and Server protocol support. Use '-6' to run the daemons | |
2362 | as v6-only. Use '-4' to run the daemons as v4-only (default. There is | |
2363 | no support currently for both. | |
2364 | ||
2365 | - Server support for multiple IA_NA options, containing at most one | |
2366 | IAADDR option. | |
2367 | ||
2368 | - Client support for one IA_NA option, containing any number of IAADDR | |
2369 | options. | |
2370 | ||
2371 | - Server support for the DHCPv6 Information-request message. | |
2372 | ||
2373 | - Inappropriate unicast DHCPv6 messages sent to the server are now | |
2374 | discarded, and this has rearchitected the IO system slightly. | |
2375 | ||
2376 | - The DHCPv6 server DUID defaults to type 1, is persistently stored in | |
2377 | the leases database, and can be over-ridden (either completely, or by | |
2378 | specifying type 1 or type 2). | |
2379 | ||
2380 | - The server only uses Rapid-Commit if it has been configured with the | |
2381 | Rapid-Commit option and the client requests it. | |
2382 | ||
2383 | - DDNS support. We now update AAAA records in the same place we would | |
2384 | update A records, if we have an IPv6 address. We also generate IP6.ARPA | |
2385 | style names for PTR records if we're dealing with an IPv6 address. Both | |
2386 | A and AAAA updates are done using the same 'fqdn.' virtual option space | |
2387 | (although the DHCPv4 FQDN and DHCPv6 FQDN options are formatted | |
2388 | differently, they both use the same code here). | |
2389 | ||
2390 | - The Linux dhclient-script attempts to set and remove assigned addresses, | |
2391 | and to configure /etc/resolv.conf from nameserver and domain name | |
2392 | configurations. It can be extended to configure other parameters. | |
2393 | ||
2394 | - Initial DHCPv6 lease support. | |
2395 | ||
2396 | - The IO system now tracks all local IP addresses, so that the DHCP | |
2397 | applications (particularly the dhcrelay) can discern between what frames | |
2398 | were transmitted to it, and what frames are being carried through it which | |
2399 | it should not intercept. | |
2400 | ||
1418fd11 DH |
2401 | Changes since 3.1.0 (Maintenance) |
2402 | ||
2403 | - A bug was repaired where MAC Address Affinity for virgin leases always | |
2404 | mapped to the primary. Virgin leases now have an interleaved preference | |
2405 | between primary and secondary. | |
2406 | ||
2407 | - A bug was repaired where MAC Address Affinity for clients with no client | |
2408 | identifier was sometimes mishashed to the peer. Load balancing during | |
2409 | runtime and pool rebalancing were opposing. | |
2410 | ||
aa3e348e DH |
2411 | - An assertion in lease counting relating to reserved leases was repaired. |
2412 | ||
e9c59645 DH |
2413 | - The subnet-mask option inclusion now conforms with RFC2132 section 3.3; |
2414 | it will only appear prior to the routers option if it is present on the | |
2415 | Parameter-Request-List. The subnet-mask option will also only be | |
2416 | included by default (if it is not on the PRL) in response to DISCOVER | |
2417 | or REQUEST messages. | |
2418 | ||
2419 | - The FQDN option is only supplied if the client supplied an FQDN option or | |
2420 | if the FQDN option was explicitly requested on the PRL. | |
2421 | ||
c104546d DH |
2422 | - Dynamic BOOTP leases are now load balanced in failover. |
2423 | ||
b9d0cc05 DH |
2424 | Changes since 3.1.0rc1 |
2425 | ||
adb95d23 | 2426 | - The parse warning that 'deny dynamic bootp;' must be configured for |
b9d0cc05 DH |
2427 | failover protected subnets was removed. |
2428 | ||
a512cc3a DH |
2429 | Changes since 3.1.0b2 |
2430 | ||
2431 | - Failover rebalance events no longer play ping pong with round errors | |
2432 | (moving leases between free and back to backup where there are an | |
2433 | odd number of leases). | |
2434 | ||
2435 | - The 'pool' log line has been split into two messages, one before the | |
2436 | rebalance run, and one after. | |
2437 | ||
2438 | - Any queued BNDACKs are transmitted before transmitting new BNDUPDs. | |
2439 | This enforces the correct sequence of events for the remote server | |
2440 | processing these messages. | |
2441 | ||
fe5b0fdd | 2442 | Changes since 3.1.0b1 |
27837f95 | 2443 | |
74dc3e0b EH |
2444 | - Fixed a bug that caused OMAPI clients to freeze when opening lease |
2445 | objects. | |
2446 | ||
1ba87b37 EH |
2447 | - A new server config option "fqdn-reply" specifies whether the server |
2448 | should send out option 81 (FQDN). Defaults to "on". If set to "off", | |
2449 | the FQDN option is not sent, even if the client requested it. This is | |
2450 | needed because some clients misbehave otherwise. Thanks to Christof Chen | |
2451 | at Allianz. | |
2452 | ||
a58da042 EH |
2453 | - Allow trace output files (-tf option) to be overwritten, rather than |
2454 | crashing dhcpd if the file already exists | |
2455 | ||
61252edf EH |
2456 | - A bug was fixed that caused dhcpd to segfault if a pool was declared |
2457 | outside the scope of a subnet in dhcpd.conf. | |
2458 | ||
27837f95 DH |
2459 | - Some uninitialized values were repaired in dhcpleasequery.c that |
2460 | caused the server to abort. | |
2461 | ||
4d2eaafb DH |
2462 | - A new server config option, 'do-reverse-updates', has been added |
2463 | which causes the server to abstain from performing updates on PTR | |
2464 | records. Thanks to a patch from Christof Chen at Allianz. | |
2465 | ||
06211b40 DH |
2466 | - A bug was repaired in subencapsulation support, where spaces separated |
2467 | by empty spaces would not get included. | |
2468 | ||
d6614ea2 DH |
2469 | - A bug in dhclient was repaired which caused it to send parameter request |
2470 | lists of 55 bytes in length no matter how long the declared PRL was. | |
2471 | ||
132d38f2 DH |
2472 | - 'dhcp.c(3953): non-null pointer' has been repaired. This fixes a flaw |
2473 | wherein the DHCPv4 server may ignore a configured server-identifier. | |
2474 | ||
fc3b9c90 DH |
2475 | - A flaw in failover startup sequences was repaired that sometimes left |
2476 | the primary DHCP server's pool rebalance schedules unscheduled. | |
2477 | ||
c9feb859 DH |
2478 | - Corrected a flaw that broke encapsulated spaces included due to presence |
2479 | on the parameter request list. | |
2480 | ||
c57db45c SK |
2481 | Changes since 3.1.0a3 |
2482 | ||
2483 | - Some spelling fixes. | |
98311e4b | 2484 | |
bd2bc2fa DH |
2485 | Changes since 3.1.0a2 |
2486 | ||
2487 | - A bug was fixed where attempting to permit leasequeries results in a | |
2488 | fatal internal error, "Unable to find server option 49". | |
2489 | ||
85edef5c DH |
2490 | - A bug was fixed in dhclient rendering the textual output form of the |
2491 | domain-search option syntax. | |
2492 | ||
bdddcb7d DH |
2493 | Changes since 3.1.0a1 |
2494 | ||
2495 | - A bug in the FQDN universe that added FQDN codes to the NWIP universe's | |
2496 | hash table was repaired. | |
2497 | ||
616d67cb DH |
2498 | - The servers now try harder to transmit pending binding updates when |
2499 | entering normal state. | |
2500 | ||
2501 | - UPDREQ/UPDREQALL handling was optimized - it no longer dequeues and | |
2502 | requeues all pending updates. This should reduce the number of spurious | |
66c8f734 DH |
2503 | 'xid mismatch' log messages. |
2504 | ||
2505 | - An option definition referencing leak was fixed, which resulted in early | |
2506 | termination of dhclient upon the renewal event. | |
616d67cb | 2507 | |
6708d944 DH |
2508 | - Some default hash table sizes were tweaked, some upwards, some downwards. |
2509 | 3.1.0a1's tables resulted in a reduction in default server memory use. | |
2510 | The new selected values provide more of a zero sum (increasing the size | |
2511 | of tables likely to be populated, decreasing the size of tables unlikely). | |
2512 | ||
45d545f0 | 2513 | - Lease structures appear in three separate hashes: by IP address, by UID, |
6708d944 DH |
2514 | and by hardware address. One type of table was used for all three, and |
2515 | improvements to IP address hashing were applied to all three (so UID and | |
2516 | hardware addresses were treated like 4-byte integers). There are now two | |
2517 | types of tables, and the uid/hw hashes use functions more appropriate | |
2518 | to their needs. | |
2519 | ||
2520 | - The max-lease-misbalance percentage no longer causes scheduled rebalance | |
2521 | runs to be skipped: it still governs the schedule, but every scheduled | |
2522 | run will attempt balance. | |
2523 | ||
a7ee93fe DH |
2524 | - A segfault bug in recursive encapsulation support has been corrected. |
2525 | ||
98311e4b DH |
2526 | Changes since 3.0 (New Features) |
2527 | ||
2528 | - A workaround for certain STSN servers that send a mangled domain-name | |
2529 | option was introduced for dhclient. The client will now accept corrupted | |
2530 | server responses, if they contain a valid DHCP_MESSAGE_TYPE (OFFER, ACK, | |
2531 | or NAK). The server will continue to not accept corrupt client packets. | |
2532 | ||
98bd7ca0 | 2533 | - Support for 'reserved' (pseudo-static) and BOOTP leases via failover |
a55ccdd0 | 2534 | was introduced. |
98311e4b DH |
2535 | |
2536 | - Support for adding, removing, and managing class and subclass statements | |
2537 | via OMAPI. | |
2538 | ||
a55ccdd0 DH |
2539 | - The failover implementation was updated to comply with revision 12 of |
2540 | the protocol draft. | |
2541 | ||
98311e4b DH |
2542 | - 'make install' now creates the initial zero-length dhcpd.leases file if |
2543 | one does not already exist on the system. | |
2544 | ||
b43c87ad | 2545 | - RFC3942 compliance, site-local option spaces start at 224 now, not 128. |
b43c87ad | 2546 | |
0b17f049 DH |
2547 | - The Load Balance Algorithm was misimplemented. The current implementation |
2548 | matches RFC 3074. | |
2549 | ||
2727c1cf DH |
2550 | - lcase() and ucase() configuration expressions have been added which adjust |
2551 | their arguments from upper to lower and lower to upper cases respectively. | |
2714a8ef | 2552 | Thanks to a patch from Albert Herranz. |
2727c1cf | 2553 | |
febbd402 DH |
2554 | - The dhclient 'reject ...;' statement, which rejects leases given by named |
2555 | server-identifiers, now permits address ranges to be specified in CIDR | |
7d7073e7 | 2556 | notation. Thanks to a patch from David Boyce. |
febbd402 | 2557 | |
ee912528 DH |
2558 | - The subnet-mask option is now supplied by default, but at lowest |
2559 | priority. This helps a small minority of clients that provide parameter | |
2560 | request lists, but do not list the subnet-mask option because they were | |
2561 | designed to interoperate with a server that behaves in this manner. | |
2562 | ||
2563 | - The FQDN option is similarly supplied even if it does not appear on the | |
2564 | parameter request list, but not to the exclusion of options that do | |
2565 | appear at the parameter request list. Up until now it had ultimate | |
2566 | priority over the client's parameter request list. | |
2567 | ||
f7fdb216 | 2568 | - Varying option space code and length bit widths (8/16/32) are now |
51202707 | 2569 | supported. This is a milestone in achieving RFC 3925 "VIVSO" and |
f7fdb216 DH |
2570 | DHCPv6 support. |
2571 | ||
5e864416 DH |
2572 | - A new common (server or client) option, 'db-time-format local;', has |
2573 | been added which prints the local time in /var/db/dhcpd.leases rather | |
2574 | than UTC. Thanks to a patch from Ken Lalonde. | |
2575 | ||
b500bd4c DH |
2576 | - Some patches to improve DHCP Server startup speed from Andrew Matheson |
2577 | have been incorporated. | |
2578 | ||
2426234f DH |
2579 | - Failover pairs now implement 'MAC Affinity' on leases moving from the |
2580 | active to free states. Leases that belonged to the failover secondary | |
2581 | are moved to BACKUP state rather than FREE upon exiting EXPIRED state. | |
2582 | If lease rebalancing must move leases, it tries first to move leases | |
2583 | that belong to the peer in need. | |
2584 | ||
2585 | - The server no longer sends POOLREQ messages unless the pool is severely | |
2586 | misbalanced in the peer's favor (see 'man dhcpd.conf' for more details). | |
2587 | ||
2588 | - Pool rebalance events no longer happen upon successfully allocating a | |
2589 | lease. Instead, they happen on a schedule. See 'man dhcpd.conf' for the | |
2590 | min-balance and max-balance statements for more information. | |
2591 | ||
334bf491 DH |
2592 | - The DHCP Relay Agent Information Option / Link Selection Sub-Option |
2593 | is now supported. (See RFC3527 for details). | |
2594 | ||
3004bebf DH |
2595 | - A new DDNS related server option, update-conflict-detection, has been |
2596 | added. If this option is enabled, dhcpd will perform normal DHCID | |
2597 | conflict resolution (the default). If this option is disabled, it will | |
2598 | instead trust the assigned name implicitly (removing any other bindings | |
2599 | on that name). This option has not been made available in dhclient. | |
2600 | ||
567e8561 DH |
2601 | - In those cases where the DHCP software manufactures an IP header (to |
2602 | transmit via bpf, lpf, etc), the IP TTL the software selects has been | |
2603 | increased from 16 to 128. This is intended to match Microsoft Windows | |
2604 | DHCP Client behaviour, to increase compatibility. | |
2605 | ||
a396d25f DH |
2606 | - 'ignore client-updates;' now has behaviour that is different from |
2607 | 'deny client-updates;'. The client's request is not truly ignored, | |
2608 | rather it is encouraged. Should this value be configured, the server | |
2609 | updates DNS as though client-updates were set to 'deny'. That is, it | |
2610 | enters into DNS whatever it is configured to do already, provided it is | |
2611 | configured to. Then it sends a response to the client that lets the | |
2612 | client believe it is performing client updates (which it will), probably | |
2613 | for a different name. In essence, this lets the client do as it will, | |
2614 | ignoring this aspect of their request. | |
2615 | ||
dba5803b DH |
2616 | - Support for compressed 'domain name list' style DHCP option contents, and |
2617 | in particular the domain search option (#119) was added. | |
2618 | ||
41e45067 | 2619 | - The DHCP LEASEQUERY protocol as defined in RFC4388 is now implemented. |
6d103865 SK |
2620 | LEASEQUERY lets you query the DHCP server for information about a lease, |
2621 | using either an IP address, MAC address, or client identifier. Thanks | |
2622 | to a patch from Justin Haddad. | |
2623 | ||
41e45067 DH |
2624 | - DHCPD is now RFC2131 section 4.1 compliant (broadcast to all-ones ip and |
2625 | ethernet mac address) on the SCO platform specifically without any strange | |
2626 | ifconfig hacks. Many thanks go to the Kroger Co. for donating the | |
2627 | hardware and funding the development. | |
6d103865 | 2628 | |
b543fea9 DH |
2629 | - A new common configuration executable statement, execute(), has been |
2630 | added. This permits dhcpd or dhclient to execute a named external | |
2631 | program with command line arguments specified from other configuration | |
2632 | language. Thanks to a patch written by Mattias Ronnblom, gotten to us | |
2633 | via Robin Breathe. | |
2634 | ||
b22de500 DH |
2635 | - A new dhcp server option 'adaptive-lease-time-threshold' has been added |
2636 | which causes the server to substantially reduce lease-times if there are | |
2637 | few (configured percentage) remaining leases. Thanks to a patch submitted | |
2638 | from Christof Chen. | |
2639 | ||
96bbe8c5 SK |
2640 | - Encapsulated option spaces within encapsulated option spaces is now |
2641 | formally supported. | |
2642 | ||
b8221d95 DH |
2643 | Changes since 3.0.6rc1 |
2644 | ||
2645 | - supersede_lease() now requeues leases in their respective hardware | |
2646 | address hash bucket. This mirrors client identifier behaviour. | |
2647 | ||
c1e6c832 DH |
2648 | Changes since 3.0.5 |
2649 | ||
f546c28b DH |
2650 | - Assorted fixes for broken network devices: Packet length is now |
2651 | determined from the IP header length field to finally calculate the | |
2652 | UDP payload length, because some NIC drivers return more data than | |
5a22eb63 | 2653 | they actually received. |
f546c28b DH |
2654 | |
2655 | - UDP packets are now stored in aligned data structures. | |
2656 | ||
c1e6c832 DH |
2657 | - A logic error in omapi interface code was repaired that might result in |
2658 | incorrectly indicating 'up' state when any flags were set, rather than | |
23e10d37 DH |
2659 | specifically the INTERFACE_REQUESTED flag. Thanks to a patch from |
2660 | Jochen Voss which got to us via Andrew Pollock at Debian. | |
c1e6c832 | 2661 | |
75ab3070 DH |
2662 | - A reference leak on binding scopes set by ddns updates was repaired. |
2663 | ||
d69fb6a8 | 2664 | - A memory leak in the minires_nsendsigned() function call was repaired. |
23e10d37 | 2665 | Effectively, this leaked ~176 bytes per DDNS update. |
d69fb6a8 | 2666 | |
02428754 DH |
2667 | - In the case where an "L2" DHCP Relay Agent (one that does not set giaddr) |
2668 | was directly attached to the same broadcast domain as the DHCP server, | |
2669 | the RFC3046 relay agent information option was not being returned to the | |
2670 | relay in the server's replies. This was fixed; the dhcp server no longer | |
2671 | requires the giaddr to reply with relay agent information. Note that | |
2672 | this also improves compatibility with L2 devices that "intercept" DHCP | |
2673 | packets and expect relay agent information even in unicast (renewal) | |
23e10d37 DH |
2674 | replies. Thanks to a patch from Pekka Silvonen. |
2675 | ||
2676 | - A bug was fixed where the BOOTP header 'sname' field had a value, the | |
2677 | copy written to persistent storage was actually the contents of the | |
2678 | 'file' field. | |
02428754 | 2679 | |
ecde99a3 DH |
2680 | - A bug was fixed where the nwip virtual option space was referencing |
2681 | the fqdn option's virtual option space's option cache. | |
2682 | ||
67674ffb DH |
2683 | - Timestamp parsing errors that indicated missing "minutes" fields rather |
2684 | than the actually missing "seconds" fields have been repaired thanks to | |
2685 | a patch from Kevin Steves. | |
2686 | ||
830ebc4c DH |
2687 | - A grammar error in the dhclient.8 manpage was repaired thanks to a patch |
2688 | from Chris Wagner. | |
2689 | ||
c759db75 DH |
2690 | - Several spelling typos were repaired, and some cross-references to other |
2691 | relevant documents were included in the manpages, thanks to a patch | |
2692 | by Andrew Pollock which got to us via Tomas Pospisek. | |
2693 | ||
9aa3f3a5 DH |
2694 | - Some bugs were fixed in the 'emergency relay agent options hologram' |
2695 | which is used to retain relay agent option contents from when the | |
2696 | client was in INIT or REBIND states. This should solve problems where | |
2697 | relay agent options were not echoed from the server, even when giaddr | |
2698 | was set. | |
2699 | ||
3d0c598a DH |
2700 | - dhclient now closes its descriptor to dhclient.leases prior to executing |
2701 | dhclient-script. Thanks to a patch from Tomas Pospisek. | |
2702 | ||
d5b6835f DH |
2703 | - The server's "by client-id" and "by hardware address" hash table lists |
2704 | are now sorted according to the preference to re-allocate that lease to | |
2705 | returning clients. This should eliminate pool starvation problems | |
2706 | arising when "INIT" clients were given new leases rather than presently | |
2707 | active ones. | |
2708 | ||
02428754 | 2709 | Changes since 3.0.5rc1 |
0a73b7b6 | 2710 | |
901306d5 | 2711 | - A bug was repaired in fixes to the dhclient, which sought to run the |
0a73b7b6 SK |
2712 | dhclient-script with the 'EXPIRE' state should it receive a NAK in |
2713 | response to a REQUEST. The client now iterates the PREINIT state | |
2714 | after the EXPIRE state, so that interfaces that might be configured | |
2715 | 'down' can be brought back 'up' and initialized. | |
2716 | ||
87a08ccc DH |
2717 | - DHCPINFORM handling for clients that properly set ciaddr and come to the |
2718 | server via a relay aget has been repaired. | |
2719 | ||
6da113fb DH |
2720 | Changes since 3.0.4 |
2721 | ||
2722 | - A warning that host statements declared within subnet or shared-network | |
2723 | scopes are actually global has been added. | |
2724 | ||
2725 | - The default minimum lease time (if min-lease-time was not specified) | |
2726 | was raised from 0 to 300. 0 is not thought to be sensible, and is | |
2727 | known to be damaging. | |
2728 | ||
2729 | - Added additional fatal error sanity checks surrounding lease binding | |
2730 | state count calculations (free/active counts used for failover pool | |
2731 | balancing). | |
2732 | ||
dcc557db DH |
2733 | - Some time value size fixes in 3.0.4 brought on from FreeBSD /usr/ports were |
2734 | misapplied to server values rather than client values. The server no longer | |
2735 | advertises 8-byte lease-time options when on 64-bit platforms. | |
2736 | ||
1b2ab55f DH |
2737 | - A bug where leases not in ACTIVE state would get billed to billed classes |
2738 | (classes with lease limitations) was fixed. Non-active leases OFFERed | |
2739 | to clients are no longer billed (but billing is checked before offering). | |
2740 | ||
e48891e8 DH |
2741 | - The dhcpd.conf.5 manpage was updated in regard to the ddns-domainname |
2742 | configuration option - the default configuration and results should be | |
2743 | more clear now. | |
2744 | ||
6cbc6629 DH |
2745 | - If the dhclient were to receive a DHCPNAK while it was in the RENEW |
2746 | state (and consequently, had an active, 'bound' address and related | |
2747 | configuration options), it would fail to 'tear down' this information | |
2748 | before proceeding into INIT state. dhclient now iterates the dhclient- | |
2749 | script with the 'EXPIRE' action to cause these teardowns prior to entering | |
1d3bfb17 | 2750 | INIT state. Thanks to a patch from Chris Zimmerman. |
6cbc6629 | 2751 | |
c5fec5fa DH |
2752 | - The omapi.1 manpage had some formatting errors repaired thanks to a patch |
2753 | from Yoshihiko Sarumaru. | |
2754 | ||
33e1cb2b DH |
2755 | - A few lines of code that were failover-specific were moved within |
2756 | #if defined() clauses so that compilation without failover could be | |
2757 | made possible. | |
2758 | ||
2bddf829 DH |
2759 | - The log message emitted when the 'leased-address' value was not available |
2760 | in dhcpd.conf "executable statements" has been updated to be more helpful. | |
2761 | Manpage information for this value has also been updated. | |
2762 | ||
87578987 DH |
2763 | - Abandoned or dissociated (err condition) leases now remove any related |
2764 | dynamic dns bindings. Thanks to a patch from Patrick Schoo. | |
2765 | ||
e77c575f DH |
2766 | - Attempting to write a new lease file to replace a corrupt (due to |
2767 | encountering non-retryable errors during writing) lease file should | |
2768 | no longer result in an infinite recursion. | |
2769 | ||
2178df03 DH |
2770 | - Host declaration hardware addresses and client identifiers may only be |
2771 | configured once. dhcpd will now fail to load config files that specify | |
2772 | multiple identifiers (previous versions would silently over-ride the | |
2773 | value with the later configured value). | |
2774 | ||
d5341d9b SK |
2775 | - Several option codes that have been allocated since our last release |
2776 | have been named and documented. | |
2777 | ||
2778 | - Option names of the form "unknown-123" have been removed from the in- | |
2779 | memory hash tables. In order to support options of these names that | |
2780 | may appear in dhclient.leases or similar in previous versions, the | |
2781 | parser will now find the new option code definition, or mock up a | |
2782 | generic option code definition. This should result in a smooth | |
2783 | transition from one name to the other, as the new name is used to | |
2784 | write new output. | |
2785 | ||
6da113fb DH |
2786 | Changes since 3.0.4rc1 |
2787 | ||
2788 | - The dhcp-options.5 manpage was updated to correct indentation errors | |
2789 | thanks to a patch from Jean Delvare. | |
2790 | ||
2791 | Changes since 3.0.4b3 | |
2792 | ||
2793 | - Some manual pages were clarified pursuant to discussion on the dhcp-server | |
2794 | mailing list. | |
2795 | ||
88cd8aca DH |
2796 | Changes since 3.0.4b2 |
2797 | ||
45d545f0 | 2798 | - Null-termination sensing for certain clients that unfortunately require |
88cd8aca DH |
2799 | it in DHCPINFORM processing was repaired. |
2800 | ||
2801 | - The host-name option and a few others were moved from "X" format to "t" | |
2802 | format to be compatible with new NULL handling functions. | |
2803 | ||
2804 | - DHCPINFORM processing is a little more careful about return addressing | |
2805 | its responses, or if responding via a relay. The INFORM related | |
2806 | messages also log the 'effective client ip address' rather than the | |
2807 | client's supplied ciaddr (since some clients produce null ciaddrs). | |
2808 | ||
2809 | - The server was inappropriately sending leases to the RESET state in the | |
2810 | event that multiple active leases were found to match a singly-identified | |
2811 | client. This was changed to RELEASED (by accepting a different, ACTIVE | |
2812 | binding, the client is implicitly releasing its lease). This repairs a | |
2813 | bug wherein secondary servers in failover pairs detecting this condition | |
2814 | move leases to RESET, and primaries refuse to accept that state | |
2815 | transition (properly). | |
2816 | ||
2817 | - The memset-after-dmalloc() changes made in 3.0.4b1 have been backed out. | |
2818 | ||
2819 | Changes since 3.0.4b1 | |
2820 | ||
2821 | - Command line parsing in omshell was repaired - it no longer closes | |
2822 | STDIN after reading one line. | |
2823 | ||
2824 | - The resolver library no longer closes the /etc/resolv.conf file | |
2825 | descriptor it opened twice. | |
2826 | ||
2827 | - Changes to trailing NULL removal in 't' option-atoms has been rethought, | |
2828 | it now includes 'd' (domain name) types, and tries hard not to rewind an | |
2829 | option beyond the start of the text field it is un-terminating. | |
2830 | ||
2831 | Changes since 3.0.3 | |
2832 | ||
2833 | - A DDNS update handling function was misusing the DNS error codes, rather | |
2834 | than the internal generic result enumeration. The result is a confusing | |
2835 | syslog line, logging the wrong condition. | |
2836 | ||
2837 | - The DHCP Server was not checking pool balance in the case where it brought | |
2838 | a non-ACTIVE lease out of storage for a client that was returning to use | |
2839 | a lease it once had long ago, and had since expired. | |
2840 | ||
2841 | - Failover peers no longer bother to look for free leases to allocate when | |
2842 | they already found the client's ACTIVE lease. DISCOVERs are load balanced | |
98bd7ca0 | 2843 | whether freely-allocated or not, unless the server doubts the peer has |
88cd8aca DH |
2844 | leases to allocate. |
2845 | ||
2846 | - Fixed a bug in dhcrelay agent addition code that suppressed trailing | |
45d545f0 | 2847 | PAD options - it was suppressing only one trailing PAD option, rather |
88cd8aca DH |
2848 | than the entire block of them. |
2849 | ||
3a16098f DH |
2850 | ! Fixed some unlikely overlapping-region memcpy() bugs in dhcrelay agent |
2851 | option addition and stripping code. Added a few sanity checks. Although | |
2852 | highly improbable, due to requiring the reception of a DHCP datagram well | |
2853 | in excess of all known to be used physical MTU limitations, it is possible | |
2854 | this may have been used in a stack overflow security vulnerability. Thanks | |
2855 | to a patch from infamous42md. | |
2856 | ||
2857 | ! Added some sanity checks to OMAPI connection/authentication code. | |
2858 | Although highly improbable, due to having to deliver in excess of 2^32 | |
2859 | bytes of data via the OMAPI channel, not to mention requiring dhcpd to | |
2860 | be able to malloc() a memory region 2^32 bytes in size, it was possible | |
2861 | this might have resulted in a heap overflow security vulnerability. | |
2862 | Thanks to a patch from infamous42md. | |
88cd8aca DH |
2863 | |
2864 | - dmalloc() memset()'s the non-debug (data) portion of the allocated | |
2865 | memory to zero. Code that memset()'s the result returned by dmalloc() to | |
2866 | zero is redundant. These redundancies were removed. | |
2867 | ||
2868 | - Some type declaration corrections to u_int16_t were made in common/tr.c | |
4b97eaff | 2869 | (Token Ring support) thanks to a patch from Jason Vas Dias at Red Hat. |
88cd8aca DH |
2870 | |
2871 | - A failover bug that was allowing leases that EXPIRED or were RELEASED | |
2872 | where tsfp and tstp are identical timestamps to languish in these | |
2873 | transitional states has been repaired. As a side effect, lease | |
2874 | databases should be kept more consistent overall, not just for these | |
2875 | transitional states. | |
2876 | ||
2877 | - If the lease db is deleted out from under the daemon, and it moves to rewrite | |
2878 | the db, it will go ahead with the operation and move the new db into place | |
2879 | once it detects the old db does not exist. | |
2880 | ||
2881 | - dhclient now ignores IRDA, SIT, and IEEE1394 network interfaces, as it | |
2882 | is either nonsensical or (in the case of IEEE1394) is not known to support | |
2883 | these interfaces. Thanks to Marius Gedminas and Andrew Pollock of Debian. | |
2884 | ||
2885 | - Some previously undocumented reasons for dhclient-script invoking has | |
45d545f0 | 2886 | been documented in the dhclient-script.8 manpage. |
88cd8aca DH |
2887 | |
2888 | - Failover potential expiry calculations (TSTP) have been corrected. Results | |
2889 | should be substantially more consistent, and proper given the constraints. | |
2890 | ||
2891 | - Adjusted lease state validation checks in potential-conflict, to | |
2892 | account for possible clock skew similarly to normal state, and several | |
2893 | previously illegal transitions were made legal (ex: active->released). | |
2894 | ||
2895 | - An impossible sanity check was removed from omapi/buffer.c, thanks to a | |
2896 | patch from 'infamous42md'. | |
2897 | ||
2898 | - An OMAPI host/network byte order problem in lease time values has been | |
2899 | repaired. | |
2900 | ||
2901 | - Several minor bugs, largely relating to treating 8-byte time values as | |
2902 | 4-byte entities, have been repaired after careful review of the FreeBSD | |
2903 | ports collection's patch set. Thanks to the nameless entities who have | |
2904 | contributed to the FreeBSD ports. | |
2905 | ||
2906 | - When writing a trace file, the file is now created with permissions 0600, | |
2907 | to help administrators avoid accidentally publicising sensitive config | |
2908 | data. | |
2909 | ||
2910 | - The calculation of the maximum size of DHCP packets no longer includes | |
2911 | Ethernet framing overhead. The result is that the 'Maximum Message | |
2912 | Size' option advertised by clients, or the default value 576, is no | |
2913 | longer reduced by 14 bytes, and instead directly reflects the IP level | |
2914 | MTU (and the default, minimum allowed IP MTU of 576). | |
2915 | ||
2916 | - The special status of RELEASED/EXPIRED/RESET leases when a server | |
2917 | is operating in partner-down was fixed. It no longer requires a | |
2918 | lease be twice the MCLT beyond STOS to 'reallocate', and the expiry | |
2919 | event to turn these into FREE leases without peer acknowledgement | |
2920 | (after STOS+MCLT) has been repaired. | |
2921 | ||
2922 | - Compilation on older Solaris systems (lacking /usr/include/sys/int_types.h) | |
2923 | has been repaired. | |
2924 | ||
2925 | - "append"ing a string onto the end of a "t" type option (such as the | |
2926 | domain-name field) that had been improperly NULL-terminated by the | |
2927 | DHCP server will no longer result in a truncated string containing | |
2928 | only the option from the server, and not the expected appended value. | |
4b97eaff | 2929 | Thanks to a patch from Jason Vas Dias at Red Hat. |
88cd8aca DH |
2930 | |
2931 | - File handlers on configuration state (config files and lease dbs) should | |
98bd7ca0 | 2932 | be treated consistently, regardless of whether TRACING is defined or not. |
88cd8aca | 2933 | |
45d545f0 | 2934 | - The Linux build environment has had some minor improvements - better |
88cd8aca DH |
2935 | sensing of 64-bit pointer sizes (only used for establishing an icmp_id), |
2936 | and corrections to #if operators regarding LINUX_MAJOR should it ever | |
2937 | move to 3.[01].x. | |
2938 | ||
2939 | - The server now tries harder to survive the condition where it is unable | |
2940 | to open a new lease file to rewrite the lease state database. | |
2941 | ||
c75473d8 DH |
2942 | Changes since 3.0.3b3 |
2943 | ||
2944 | - dhclient.conf documentation for interface {} was updated to reflect recent | |
2945 | discussion on the dhcp-hackers mailing list. | |
2946 | ||
2947 | - In response to reports that the software does not compile on GCC 4.0.0, | |
2948 | -Werror was removed from Makefile.conf for all platforms that used it. | |
2949 | We will address the true problem in a future release; this is a temporary | |
2950 | workaround. | |
2951 | ||
2952 | Changes since 3.0.3b2 | |
2953 | ||
2954 | - An error in code changes introduced in 3.0.3b2 was corrected, which caused | |
2955 | static BOOTP clients to receive random addresses. | |
2956 | ||
2957 | Changes since 3.0.3b1 | |
2958 | ||
2959 | - A bug was fixed in BOOTPREQUEST handling code wherein stale references to | |
2960 | host records would be left behind on leases that were not allocated to the | |
2961 | client currently booting (eg in the case where the host was denied booting). | |
2962 | ||
2963 | - The dhcpd.conf.5 manpage was updated to be more clear in regards to | |
2964 | multiple host declarations (thanks to Vincent McIntyre). 'Interim' style | |
2965 | dynamic updates were also retouched. | |
2966 | ||
98311e4b DH |
2967 | Changes since 3.0.2 |
2968 | ||
2969 | - A bug was fixed where a server might load balance a DHCP REQUEST to its | |
45d545f0 | 2970 | peer after already choosing not to load balance the preceding DISCOVER. |
98311e4b DH |
2971 | The peer cannot allocate the originating server's lease. |
2972 | ||
2973 | - In the case where a secondary server lost its stable storage while the | |
2974 | primary was still in communications-interrupted, and came back online, | |
2975 | the lease databases would not be fully transferred to the secondary. | |
2976 | This was due to the secondary errantly sending an extra UPDREQ message | |
2977 | when the primary made its state transition to PARTNER-DOWN known. | |
2978 | ||
2979 | - The package will now compile cleanly in gcc 3.3 and 3.4. As a side effect, | |
2980 | lease structures will be 9 bytes smaller on all platforms. Thanks to | |
4b97eaff | 2981 | Jason Vas Dias at Red Hat. |
98311e4b DH |
2982 | |
2983 | - Interface discovery code in DISCOVER_UNCONFIGURED mode is now | |
2984 | properly restricted to only detecting broadcast interfaces. Thanks | |
4b97eaff | 2985 | to a patch from Jason Vas Dias at Red Hat. |
98311e4b DH |
2986 | |
2987 | - decode_udp_ip_header was changed so that the IP address was copied out | |
2988 | to a variable, rather than referenced by a pointer. This enforces 4-byte | |
2989 | alignment of the 32-bit IP address value. Thanks to a patch from Dr. | |
2990 | Peter Poeml. | |
2991 | ||
2992 | - An incorrect log message was corrected thanks to a patch from | |
2993 | Dr. Peter Poeml. | |
2994 | ||
2995 | - A bug in DDNS was repaired, where if the server's first DDNS action was | |
2996 | a DDNS removal rather than a DDNS update, the resolver library's | |
2997 | retransmit timer and retry timer was set to the default, implying a | |
2998 | 15 second timeout interval. Which is a little excessive in a synchronous, | |
2999 | single-threaded system. In all cases, ISC DHCP should now hold fast to | |
3000 | a 1-second timeout, trying only once. | |
3001 | ||
3002 | - The siaddr field was being improperly set to the server-identifier when | |
3003 | responding to DHCP messages. RFC2131 clarified the siaddr field as | |
3004 | meaning the 'next server in the bootstrap process', eg a tftp server. | |
3005 | The siaddr field is now left zeroed unless next-server is configured. | |
3006 | ||
3007 | - mockup_lease() could have returned in an error condition (or in the | |
3008 | condition where no fixed-address was found matching the shared | |
3009 | network) with stale references to a host record. This is probably not | |
3010 | a memory leak since host records generally never die anyway. | |
3011 | ||
3012 | - A bug was repaired where failover servers would let stale client identifiers | |
3013 | persist on leases that were reallocated to new clients not sending an id. | |
3014 | ||
3015 | - Binding scopes ("set var = value;") are now removed from leases allocated | |
3016 | by failover peers if the lease had expired. This should help reduce the | |
3017 | number of stale binding scopes on leases. | |
3018 | ||
3019 | - A small memory leak was closed involving client identifiers larger than | |
3020 | 7 bytes, and failover. | |
3021 | ||
3022 | - Configuring a subnet in dhcpd.conf with a subnet mask of 32 bits might | |
3023 | cause an internal function to overflow heap. Thanks to Jason Vas Dias | |
4b97eaff | 3024 | at Red Hat. |
98311e4b DH |
3025 | |
3026 | - Some inconsistencies in treating numbers that the lexer parsed as 'NUMBER' | |
3027 | or 'NUMBER_OR_NAME' was repaired. Hexadecimal parsing is affected, and | |
3028 | should work better. | |
3029 | ||
3030 | - In several cases, parse warnings were being issued before the lexical | |
3031 | token had been advanced to the token whose value was causing an error... | |
3032 | causing parse warnings to claim the problem is on the wrong token. | |
3033 | ||
3034 | - Host declarations matching on client identifier for dynamic leases will | |
3035 | no longer match fixed-address host declarations (this is now identical | |
3036 | to behaviour for host records matching on hardware address). | |
3037 | ||
3038 | Changes since 3.0.2rc3 | |
3039 | ||
3040 | - A previously undocumented configuration directive, 'local-address', | |
3041 | was documented in the dhcpd.conf manpage. | |
3042 | ||
3043 | Changes since 3.0.2rc2 | |
3044 | ||
45d545f0 | 3045 | - Two variables introduced in 3.0.2b1 were used without being initialized |
98311e4b DH |
3046 | in the case where neither the FILE nor SNAME fields were available for |
3047 | overloading. This was repaired. | |
3048 | ||
3049 | - A heretofore believed to be impossible corner case of the option | |
3050 | overloading implementation turned out to be possible ("Unable to sort | |
3051 | overloaded options after 10 tries."). The implementation was reworked | |
3052 | to consider the case of an option so large it would require more than | |
3053 | three chunks to fit. | |
3054 | ||
3055 | - Many other instances of variables being used without being initialized | |
3056 | were repaired. | |
3057 | ||
3058 | - An uninitialized variable in omapi_io_destroy() led to the discovery | |
3059 | that this function may result in orphaned pointers (and hence, a memory | |
3060 | leak). | |
3061 | ||
3062 | Changes since 3.0.2rc1 | |
3063 | ||
3064 | - allocate_lease() was rewritten to repair a bug in which the server would | |
3065 | try to allocate an ABANDONED lease when FREE leases were available. | |
3066 | ||
3067 | Changes since 3.0.2b1 | |
3068 | ||
3069 | - Some dhcp-eval.5 manpage formatting was repaired. | |
3070 | ||
3071 | Changes since 3.0.1 | |
3072 | ||
3073 | - A bug was fixed in the server's 'option overloading' implementation, | |
3074 | where options loaded into the 'file' and 'sname' packet fields were | |
3075 | not aligned precisely as rfc2131 dictates. | |
3076 | ||
3077 | - The FreeBSD client script was changed to support the case where a domain | |
3078 | name was not provided by the server. | |
3079 | ||
3080 | - A memory leak in 'omshell' per each command line parsed was | |
3081 | repaired, thanks to a patch from Jarkko Torppa. | |
3082 | ||
3083 | - Log functions writing to stderr were adjusted to use the STDERR_FILENO | |
3084 | system definition rather than '2'. This is a no-op for 90% of platforms. | |
3085 | ||
3086 | - One call to trace_write_packet_iov() counted the number of io vectors | |
3087 | incorrectly, causing inconsistent tracefiles. This was fixed. | |
3088 | ||
3089 | - Some expression parse failure memory leaks were closed. | |
3090 | ||
3091 | - A host byte order problem in tracefiles was repaired. | |
3092 | ||
3093 | - Pools configured in DHCPD for failover possessing permission lists that | |
adb95d23 | 3094 | previously were assumed to not include dynamic bootp clients are now |
98311e4b DH |
3095 | a little more pessimistic. The result is, dhcpd will nag you about just |
3096 | about most pools that possess a 'allow' statement with no 'deny' that | |
3097 | would definitely match a dynamic bootp client. | |
3098 | ||
3099 | - The 'ddns-update-style' configuration warning bit now insists that | |
3100 | the configuration be globally scoped. | |
3101 | ||
3102 | - Two memory leaks in dhclient were closed thanks to a patch from Felix | |
3103 | Farkas. | |
3104 | ||
3105 | - Some minor but excellently pedantic documentation errors were fixed | |
3106 | thanks to a patch from Thomas Klausner. | |
3107 | ||
3108 | - Bugs in operator precedence in executable statements have been repaired | |
3109 | once again. More legal syntaxes should be parsed legally. | |
3110 | ||
3111 | - Failing to initialize a tracefile for any reason if a tracefile was | |
3112 | specified is now a fatal error. Thanks to a patch from Albert Herranz. | |
3113 | ||
3114 | - Corrected a bug in which the number of leases transferred as calculated | |
3115 | by the failover primary and sent to peers in POOLRESP responses may be | |
3116 | incorrect. This value is not believed to be used by other failover | |
3117 | implementations, excepting perhaps as logged information. | |
3118 | ||
3119 | - Corrected a bug in which 'dhcp_failover_send_poolresp()' was in fact | |
3120 | sending POOLREQ messages instead of POOLRESP mesasges. This message | |
3121 | was essentially ignored since failover secondaries effectively do not | |
3122 | respond to POOLREQ messages. | |
3123 | ||
3124 | - Type definitions for various bitwidths of integers in the sunos5-5 | |
3125 | build of ISC DHCP have been fixed. It should compile and run more | |
3126 | easily when built in 64-bit for this platform. | |
3127 | ||
3128 | - "allow known-clients;" is now a legal syntax, to avoid confusion. | |
3129 | ||
3130 | - If one dhcp server chooses to 'load balance' a request to its failover | |
3131 | peer, it first checks to see if it believes said peer has a free | |
3132 | lease to allocate before ignoring the DISCOVER. | |
3133 | ||
3134 | - log() was logging a work buffer, rather than the value returned by | |
3135 | executing the statements configured by the user. In some cases, | |
3136 | the work buffer and the intended results were the same. In some other | |
3137 | cases, they were not. This was fixed thanks to a patch from Gunnar | |
3138 | Fjone and directconnect.no. | |
3139 | ||
3140 | - Compiler warnings for some string type conversions was fixed, thanks | |
3141 | to Andreas Gustafsson. | |
3142 | ||
3143 | - The netbsd build environments were simplified to one, in which | |
3144 | -Wconversion is not used, thanks to Andreas Gustafsson. | |
3145 | ||
3146 | - How randomness in the backoff-cutoff dhclient configuration variable | |
3147 | is implemented was better documented in the manpage, and the behaviour | |
3148 | of dhclient in REQUEST timeout handling was changed to match that of | |
3149 | DISCOVER timeout handling. | |
3150 | ||
3151 | - Omapi was hardened against clients that pass in null values, thanks | |
3152 | to a patch from Mark Jason Dominus. | |
3153 | ||
3154 | - A bug was fixed in dhclient that kept it from doing client-side | |
3155 | ddns updates. Thanks to a patch from Andreas Gustafsson, which | |
3156 | underwent some modification after review by Jason Vas Dias. | |
3157 | ||
3158 | - Failover implementations disconnected due to the network between | |
3159 | them (rather than one of the two shutting down) will now try to | |
3160 | re-establish the failover connection every 5 seconds, rather than | |
3161 | to simply try once and give up until one of them is restarted. | |
3162 | Thanks to a patch from Ulf Ekberg from Infoblox, and field testing | |
3163 | by Greger V. Teigre which led to an enhancement to it. | |
3164 | ||
3165 | - A problem that kept DHCP Failover secondaries from tearing down | |
3166 | ddns records was repaired. Thanks to a patch from Ulf Ekberg from | |
3167 | Infoblox. | |
3168 | ||
3169 | - 64bit pointer sizes are detected properly on FreeBSD now. | |
3170 | ||
3171 | - A bug was repaired where the DHCP server would leave stale references | |
3172 | to host records on leases it once thought about offering to certain | |
3173 | clients. The result would be to apply host and 'known' scopes to the | |
3174 | wrong clients (possibly denying booting). NOTE: The 'mis-host' patch | |
3175 | that was being circulated as a workaround is not the way this bug was | |
3176 | fixed. If you were a victim of this bug in 3.0.1, you are cautioned | |
3177 | to proceed carefully and see if it fixes your problem. | |
3178 | ||
3179 | - A bug was repaired in the server's DHCPINFORM handling, where it | |
3180 | tried to divine the client's address from the source packet and | |
3181 | would get it wrong. Thanks to Anshuman Singh Rawat. | |
3182 | ||
3183 | - A log message was introduced to help illuminate the case where the | |
3184 | server was unable to find a lease to assign to any BOOTP client. | |
3185 | Thanks to Daniel Baker. | |
3186 | ||
3187 | - A minor dhcpd.conf.5 manpage error was fixed. | |
3188 | ||
3189 | Changes since 3.0.1rc14 | |
3190 | ||
3191 | - The global variable 'cur_time' was centralized and is now uniformly of a | |
3192 | type #defined in system-dependent headers. It had previously been defined | |
3193 | in one of many places as a 32-bit value, and this causes mayhem on 64-bit | |
3194 | big endian systems. It probably wasn't too healthy on little endian | |
3195 | systems either. | |
3196 | ||
3197 | - A printf format string error introduced in rc14 was repaired. | |
3198 | ||
3199 | - AIX system-dependent header file was altered to only define NO_SNPRINTF | |
3200 | if the condition used to #ifdef in vsnprintf in AIX' header files | |
3201 | is false. | |
3202 | ||
3203 | - The Alpha/OSF system-dependent header file was altered to define | |
3204 | NO_SNPRINTF on OS revisions older than 4.0G. | |
3205 | ||
3206 | - omapip/test.c had string.h added to its includes. | |
3207 | ||
3208 | Changes since 3.0.1rc13 | |
3209 | ||
3210 | ! CAN-2004-0460 - CERT VU#317350: Five stack overflow exploits were closed | |
3211 | in logging messages with excessively long hostnames provided by the | |
3212 | clients. It is highly probable that these could have been used by | |
3213 | attackers to gain arbitrary root access on systems using ISC DHCP 3.0.1 | |
3214 | release candidates 12 or 13. Special thanks to Gregory Duchemin for | |
3215 | both finding and solving the problem. | |
3216 | ||
3217 | ! CAN-2004-0461 - CERT VU#654390: Once the above was closed, an opening | |
45d545f0 | 3218 | in log_*() functions was evidenced, on some specific platforms where |
98311e4b DH |
3219 | vsnprintf() was not believed to be available and calls were wrapped to |
3220 | sprintf() instead. Again, credit goes to Gregory Duchemin for finding | |
3221 | the problem. Calls to snprintf() are now linked to a distribution-local | |
3222 | snprintf implementation, only in those cases where the architecture is | |
3223 | not known to provide one (see includes/cf/[arch].h). If you experience | |
3224 | linking problems with snprintf/vsnprintf or 'isc_print_' functions, this | |
3225 | is where to look. This vulnerability did not exist in any previously | |
3226 | published version of ISC DHCP. | |
3227 | ||
3228 | - Compilation on hpux 11.11 was repaired. | |
3229 | ||
3230 | - 'The cross-compile bug fix' was backed out. | |
3231 | ||
3232 | Changes since 3.0.1rc12 | |
3233 | ||
3234 | - Fixed a bug in omapi lease lookup function, to form the hardware | |
3235 | address for the hash lookup correctly, thanks to a patch from | |
3236 | Richard Hirst. | |
3237 | ||
3238 | - Fixed a bug where dhcrelay was sending relayed responses back to the | |
3239 | broadcast address, but with the source's unicast mac address. Should | |
3240 | now conform to rfc2131 section 4.1. | |
3241 | ||
3242 | - Cross-compile bug fix; use $(AR) instead of ar. Thanks to Morten Brorup. | |
3243 | ||
3244 | - Fixed a crash bug in dhclient where dhcpd servers that do not provide | |
3245 | renewal times results in an FPE. As a side effect, dhclient can now | |
3246 | properly handle 0xFFFFFFFF (-1) expiry times supplied by servers. Thanks | |
3247 | to a patch from Burt Silverman. | |
3248 | ||
3249 | - The 'ping timeout' debugs from rc12 were removed to -DDEBUG only, | |
45d545f0 | 3250 | and reformatted to correct a compilation error on Solaris platforms. |
98311e4b DH |
3251 | |
3252 | - A patch was applied which fixes a case where leases read from the | |
3253 | leases database do not properly over-ride previously read leases. | |
3254 | ||
3255 | - dhcpctl.3 manpage was tweaked. | |
3256 | ||
3257 | Changes since 3.0.1rc11 | |
3258 | ||
3259 | - A patch from Steve Campbell was applied with minor modifications to | |
3260 | permit reverse dns PTR record updates with values containing spaces. | |
3261 | ||
3262 | - A patch from Florian Lohoff was applied with some modifications to | |
3263 | dhcrelay. It now discards packets whose hop count exceeds 10 by default, | |
3264 | and a command-line option (-c) can be used to set this threshold. | |
3265 | ||
3266 | - A failover bug relating to identifying peers by name length instead of | |
3267 | by name was fixed. | |
3268 | ||
45d545f0 | 3269 | - Declaring failover configs within shared-network statements should no |
98311e4b DH |
3270 | longer result in error. |
3271 | ||
3272 | - The -nw command line option to dhclient now works. | |
3273 | ||
3274 | - Thanks to a patch from Michael Richardson: | |
3275 | - Some problems with long option processing have been fixed. | |
3276 | - Some fixes to minires so that updates of KEY records will work. | |
3277 | ||
3278 | - contrib/ms2isc was updated by Shu-Min Chang of the Intel Corporation. | |
3279 | see contrib/ms2isc/readme.txt for revision notes. | |
3280 | ||
3281 | - Dhclient no longer uses shell commands to kill another instance of | |
3282 | itself, it sends the signal directly. Thanks to a patch from Martin | |
3283 | Blapp. | |
3284 | ||
3285 | - The FreeBSD dhclient-script was changed so that a failure to write to | |
3286 | /etc/resolv.conf does not prematurely end the script. This keeps dhclient | |
3287 | from looping infinitely when this is the case. Thanks to a patch from | |
3288 | Martin Blapp. | |
3289 | ||
3290 | - A patch from Bill Stephens was applied which resolves a problem with lease | |
3291 | expiry times in failover configurations. | |
3292 | ||
3293 | - A memory leak in configuration parsing was closed thanks to a patch from | |
3294 | Steve G. | |
3295 | ||
3296 | - The function which discovers interfaces will now skip non-broadcast or | |
3297 | point-to-point interfaces, thanks to a patch from David Brownlee. | |
3298 | ||
3299 | - Options not yet known by the dhcpd or dhclient have had their names | |
3300 | changed such that they do not contain # symbols, in case they should ever | |
3301 | appear in a lease file. An option that might have been named "#144" is | |
3302 | now "unknown-144". | |
3303 | ||
3304 | - Another patch from Bill Stephens which allows the ping-check timeout to | |
3305 | be configured as 'ping-timeout'. Defaults to 1. | |
3306 | ||
3307 | Changes since 3.0.1rc10 | |
3308 | ||
3309 | - Potential buffer overflows in minires repaired. | |
3310 | ||
3311 | - A change to the linux client script to use /bin/bash, since /bin/sh may | |
3312 | not be bash. | |
3313 | ||
3314 | - Some missing va_end cleanups thanks to a patch from Thomas Klausner. | |
3315 | ||
3316 | - A correction of boolean parsing syntax validation - some illegal syntaxes | |
3317 | that worked before are now detected and produce errs, some legal syntaxes | |
3318 | that errored before will now work properly. | |
3319 | ||
3320 | - Some search-and-replace errors that caused some options to change their | |
3321 | names was repaired. | |
3322 | ||
3323 | - Shu-min Chang of the Intel corporation has contributed a perl script and | |
3324 | module that converts the MS NT4 DHCP configuration to a ISC DHCP3 | |
3325 | configuration file. | |
3326 | ||
3327 | - Applied the remainder of the dhcpctl memory leak patch provided by Bill | |
3328 | Squier at ReefEdge, Inc. (groo@reefedge.com). | |
3329 | ||
3330 | - Missing non-optional failover peer configurations will now result in a soft | |
3331 | error rather than a null dereference. | |
3332 | ||
3333 | Changes since 3.0.1rc9 | |
3334 | ||
3335 | - A format string was corrected to fix compiler warnings. | |
3336 | ||
3337 | - A number of spelling corrections were made in the man pages. | |
3338 | ||
3339 | - The dhclient.conf.5 man page was changed to refer to do-forward-updates | |
3340 | rather than a configuration option that doesn't exist. | |
3341 | ||
3342 | - A FreeBSD-specific bug in the interface removal handling was fixed. | |
3343 | ||
3344 | - A Linux-specific Token Ring detection problem was fixed. | |
3345 | ||
3346 | - Hashes removed from as-yet-unknown agent options, having those options | |
3347 | appear in reality before we know about them will no longer produce | |
3348 | self-corrupting lease databases. | |
3349 | ||
3350 | - dhclient will use the proper port numbers now when using the -g option. | |
3351 | ||
3352 | - A order-of-operations bug with 2 match clauses in 1 class statement is | |
3353 | fixed thanks to a patch from Andrew Matheson. | |
3354 | ||
3355 | - Compilation problems on Solaris were fixed. | |
3356 | ||
3357 | - Compilation problems when built with DEBUG or DEBUG_PACKET were repaired. | |
3358 | ||
3359 | - A fix to the dhcp ack process which makes certain group options will be | |
3360 | included in the first DHCPOFFER message was made thanks to a patch from | |
3361 | Ling Gou. | |
3362 | ||
3363 | - A few memory leaks were repaired thanks to patches from Bill Squier at | |
3364 | ReefEdge, Inc. (groo@reefedge.com). | |
3365 | ||
3366 | - A fix for shared-networks that sometimes give clients options for the | |
3367 | wrong subnets (in particular, 'option routers') was applied, thanks to | |
3368 | Ted Lemon for the patch. | |
3369 | ||
3370 | - Omshell's handling of dotted octets as values was changed such that dots | |
3371 | one after the other produce zero values in the integer string. | |
3372 | ||
3373 | Changes since 3.0.1rc8 | |
3374 | ||
3375 | - Fix a format string vulnerability in the server that could lead to a | |
3376 | remote root compromise (discovered by NGSEC Research Team, www.ngsec.com). | |
3377 | ||
3378 | - Add additional support for NetBSD/sparc64. | |
3379 | ||
3380 | - Fix a bug in the command-line parsing of the client. Also, resolve | |
3381 | a memory leak. | |
3382 | ||
3383 | - Add better support for shells other than bash in the Linux client | |
3384 | script. | |
3385 | ||
3386 | - Various build fixes for modern versions of FreeBSD and Linux. | |
3387 | ||
3388 | - Fix a bad bounds check when printing binding state names. | |
3389 | ||
3390 | - Clarify documentation about fixed-address and multiple addresses. | |
3391 | ||
3392 | - Fix a typo in the authoritative error message. | |
3393 | ||
3394 | - Make a log entry when we can't write a billing class. | |
3395 | ||
3396 | - Use conversion targets that are the right size on all architectures. | |
3397 | ||
3398 | - Increment the hop count when relaying. | |
3399 | ||
3400 | - Log a message when lease state is changed through OMAPI. | |
3401 | ||
3402 | - Don't rerun the shared_network when evaluating the pool. | |
3403 | ||
3404 | - Fix a reversed test in the parser. | |
3405 | ||
3406 | - Change the type of rbuf_max. | |
3407 | ||
3408 | - Make FTS_LAST a manifest constant to quiet warnings. | |
3409 | ||
3410 | Changes since 3.0.1rc7 | |
3411 | ||
3412 | - Fix two compiler warnings that are generated when compiling on Solaris | |
3413 | with gcc. These stop the build, even though they weren't actually | |
3414 | errors, because we prefer that our builds generate no warnings. | |
3415 | ||
3416 | Changes since 3.0.1rc6 | |
3417 | ||
3418 | - Don't allow a lease that's in the EXPIRED, RELEASED or RESET state | |
3419 | to be renewed. | |
3420 | ||
3421 | - Implement lease stealing for cases where the primary has fewer leases | |
3422 | than the secondary, as called for by the standard. | |
3423 | ||
3424 | - Add a fudge factor to the lease expiry acceptance code, (suggested | |
3425 | by Kevin Miller of CMU). | |
3426 | ||
3427 | - Fix a bug in permit_list_match that made it much too willing to say | |
3428 | that two permit lists matched. | |
3429 | ||
3430 | - Unless DEBUG_DNS_UPDATES is defined, print more user-friendly (and | |
3431 | also more compact) messages about DNS updates. | |
3432 | ||
3433 | - Fix a bug in generating wire-format domain names for the FQDN option. | |
3434 | ||
3435 | - Fix a bug where the FQDN option would not be returned if the client | |
3436 | requested it, contrary to the standard. | |
3437 | ||
3438 | - On Darwin, use the FreeBSD DHCP client script. | |
3439 | ||
3440 | - On NetBSD/sparc, don't check for casting warnings. | |
3441 | ||
3442 | - Add a flag in the DHCP client to disable updating the client's A | |
3443 | record when sending an FQDN option indicating that the client is | |
3444 | going to update its A record. | |
3445 | ||
3446 | - In the client, don't attempt a DNS update until one second after | |
3447 | configuring the new IP address, and if the update times out, keep | |
3448 | trying until a response, positive or negative, is received from the | |
3449 | DNS server. | |
3450 | ||
3451 | - Fix an uninitialized memory bug in the DHCP client. | |
3452 | ||
3453 | - Apply some FreeBSD-specific bug fixes suggested by Murray Stokely. | |
3454 | ||
3455 | - Fix a bug in ns_parserr(), where it was returning the wrong sort | |
3456 | of result code in some cases (suggested by Ben Harris of the | |
3457 | NetBSD project). | |
3458 | ||
3459 | - Fix a bug in is_identifier(), where it was checking against EOF | |
3460 | instead of the END_OF_FILE token (also suggested by Ben Harris). | |
3461 | ||
3462 | - Fix a bug where if an option universe contained no options, the | |
3463 | DHCP server could dump core (Walter Steiner). | |
3464 | ||
3465 | - Fix a bug in the handling of encapsulated options. | |
3466 | ||
3467 | - Fix a bug that prevented NWIP suboptions from being processed. | |
3468 | ||
3469 | - Delete the FTS_BOOTP and FTS_RESERVED states and implement them | |
3470 | as modifier flags to the FTS_ACTIVE state, as called for in the | |
3471 | failover protocol standard. | |
3472 | ||
3473 | - Fix bugs in the pool merging code that resulted in references and | |
3474 | dereferences of null pointers. This bug had no impact unless the | |
3475 | POINTER_DEBUG flag was defined. | |
3476 | ||
3477 | - In the server, added a do-forward-updates flag that can be used to | |
3478 | disable forward updates in all cases, so that sites that want the | |
3479 | clients to take sole responsibility for updating their A record can | |
3480 | do so. | |
3481 | ||
3482 | - Make it possible to disable optimization of PTR record updates. | |
3483 | ||
3484 | Changes since 3.0.1rc5 | |
3485 | ||
3486 | - Include some new documentation and changes provided by Karl Auer. | |
3487 | ||
3488 | - Add a workaround for some Lexmark printers that send a double-NUL- | |
3489 | terminated host-name option, which would break DNS updates. | |
3490 | ||
3491 | - Fix an off-by-one error in the MAC-address checking code for | |
3492 | DHCPRELEASE that was added in 3.0.1rc5. | |
3493 | ||
3494 | - Fix a bug where client-specific information was not being discarded | |
3495 | from the lease when it expired or was released, resulting in | |
3496 | problems if the lease was reallocated to a different client. | |
3497 | ||
3498 | - If more than one allocation pool is specified that has the same set | |
3499 | of constraints as another allocation pool on the same shared | |
3500 | network, merge the two pools. | |
3501 | ||
3502 | - Don't print an error in fallback_discard, since this just causes | |
3503 | confusion and does not appear to be helping to encourage anyone to | |
3504 | fix this bug. | |
3505 | ||
3506 | Changes since 3.0.1rc4 | |
3507 | ||
3508 | - Fix a bug that would cause the DHCP server to spin if asked to parse | |
3509 | a certain kind of incorrect statement. | |
3510 | ||
3511 | - Fix a related bug that would prevent an error from being reported in | |
3512 | the same case. | |
3513 | ||
3514 | - Additional documentation. | |
3515 | ||
3516 | - Make sure that the hardware address matches the lease when | |
3517 | processing a DHCPRELEASE message. | |
3518 | ||
3519 | Changes since 3.0.1rc3 | |
3520 | ||
3521 | - A minor bug fix in the arguments to a logging function call. | |
3522 | - Documentation update for dhcpd.conf. | |
3523 | ||
adbef119 | 3524 | Changes since 3.0.1rc2 |
98311e4b DH |
3525 | |
3526 | - Allow the primary to send a POOLREQ message. This isn't what the current | |
3527 | failover draft says to do, so we may have to back it out if I can't get the | |
3528 | authors to relent, but the scheme for balancing that's specified in the | |
3529 | current draft seems needlessly hairy, so I'm floating a trial balloon. | |
3530 | The rc1 code did not implement the method described in the draft either. | |
3531 | ||
adbef119 | 3532 | Changes since 3.0.1rc1 |
98311e4b DH |
3533 | |
3534 | - Treat NXDOMAIN and NXRRSET as success when we are trying to delete a | |
3535 | domain or RRSET. This allows the DHCP server to forget about a name | |
3536 | it added to the DNS once it's been removed, even if the DHCP server | |
3537 | wasn't the one that removed it. | |
3538 | ||
3539 | - Install defaults for failover maximum outstanding updates and maximum | |
3540 | silent time. This prevents problems that might occur if these values | |
3541 | were not configured. | |
3542 | ||
3543 | - Don't do DDNS deletes if ddns-update-style is none. | |
3544 | ||
3545 | - Return relay agent information options in DHCPNAK. This prevents DHCPNAK | |
3546 | messages from being dropped when the relay agent information option contains | |
3547 | routing information. | |
3548 | ||
3549 | - Fix a problem where coming up in recover wouldn't result in an update | |
3550 | request being sent. | |
3551 | ||
3552 | - Add some more chatty messages when we start a recovery update and when it's | |
3553 | done. | |
3554 | ||
3555 | - Fix a possible problem where some state might have been left around | |
3556 | after the peer lost contact and regained contact about how many updates | |
3557 | were pending. | |
3558 | ||
3559 | - Don't nix a lease update because of a lease conflict. This test has | |
3560 | never (as far as I know) prevented a mistake, and it appears to cause | |
3561 | problems with failover. | |
3562 | ||
3563 | - Add support in rc history code for keeping a selective history, rather | |
3564 | than a history of all references and dereferences. This code is only used | |
3565 | when extensive additional debugging is enabled. | |
3566 | ||
adbef119 | 3567 | Changes since 3.0 |
98311e4b DH |
3568 | |
3569 | - Make allocators for hash tables. As a side effect, this fixes a memory | |
3570 | smash in the subclass allocation code. | |
3571 | ||
3572 | - Fix a small bug in omshell where if you try to close an object when | |
3573 | no object is open, it dumps core. | |
3574 | ||
3575 | - Fix an obscure coredump that could occur on shutdown. | |
3576 | ||
3577 | - Fix a bug in the recording of host declaration rubouts in the lease file. | |
3578 | ||
3579 | - Fix two potential spins in the host deletion code. | |
3580 | ||
3581 | - Fix a core dump that would happen if an application tried to update | |
3582 | a host object attribute with a null value. | |
3583 | ||
3584 | Changes since 3.0 Release Candidate 12 | |
3585 | ||
3586 | - Fix a memory leak in the evaluation code. | |
3587 | ||
3588 | - Fix an obscure core dump. | |
3589 | ||
3590 | - Print a couple of new warnings when parsing the configuration file | |
3591 | when crucial information is left out. | |
3592 | ||
3593 | - Log "no free leases" as an error. | |
3594 | ||
3595 | - Documentation updates. | |
3596 | ||
3597 | Changes since 3.0 Release Candidate 11 | |
3598 | ||
3599 | - Always return a subnet selection option if one is sent. | |
3600 | ||
3601 | - Fix a warning that was being printed because an automatic data | |
3602 | structure wasn't zeroed. | |
3603 | ||
3604 | - Fix some failover state transitions that were being handled | |
3605 | incorrectly. | |
3606 | ||
3607 | - When supersede_lease is called on a lease whose end time has already | |
3608 | expired, but for which a state transition has not yet been done, do | |
3609 | a state transition. This fixes the case where if the secondary | |
3610 | allocated a lease to a client and the lease "expired" while the | |
3611 | secondary was in partner-down, no expiry event would actually | |
3612 | happen, so the lease would remain active until the primary was | |
3613 | restarted. | |
3614 | ||
3615 | Changes since 3.0 Release Candidate 10 | |
3616 | ||
3617 | - Fix a bug that was preventing released leases from changing state | |
3618 | in failover-enabled pools. | |
3619 | ||
3620 | - Fix a core dump in the client identifier finder code (for host | |
3621 | declarations). | |
3622 | ||
3623 | - Finish fixing a bug where bogus data would sometimes get logged to | |
3624 | the dhclient.leases file because it was opened as descriptor 2. | |
3625 | ||
3626 | - Fix the Linux dhclient-script according to suggestions made by | |
3627 | several people on the dhcp-client mailing list. | |
3628 | ||
3629 | - Log successful DNS updates at LOG_INFO, not LOG_ERROR. | |
3630 | ||
3631 | - Print an error message and refuse to run if a failover peer is | |
3632 | defined but not referenced by any pools. | |
3633 | ||
3634 | - Correct a confusing error message in failover. | |
3635 | ||
eaf0b302 TL |
3636 | Changes since 3.0 Release Candidate 9 |
3637 | ||
3638 | - Fix a bug in lease allocation for Dynamic BOOTP clients. | |
3639 | ||
0db87765 TL |
3640 | Changes since 3.0 Release Candidate 8 Patchlevel 2 |
3641 | ||
3642 | - Fix a bug that prevented update-static-leases from working. | |
3643 | ||
3644 | - Document failover-state OMAPI object. | |
3645 | ||
3646 | - Fix a compilation error on SunOS 4. | |
3647 | ||
d758ad8c TL |
3648 | Changes since 3.0 Release Candidate 8 Patchlevel 1 |
3649 | ||
3650 | - Fix a parsing bug that broke dns updates (both interim and ad-hoc). | |
3651 | This was introduced in rc8pl1 as an unintended result of the memory | |
3652 | leakage fixes that were in pl1. | |
3653 | ||
3654 | - Fix a long-standing bug where the server would record that an update | |
3655 | had been done for a client with no name, even though no update had | |
3656 | been done, and then when the client's lease expired the deletion of | |
3657 | that nonexistant record would time out because the name was the null | |
9a111ee8 | 3658 | string. |
d758ad8c TL |
3659 | |
3660 | - Clean up the omshell, dhcpctl and omapi man pages a bit. | |
3661 | ||
d758ad8c TL |
3662 | Changes since 3.0 Release Candidate 8 |
3663 | ||
3664 | - Fix a bug that could cause the DHCP server to spin if | |
3665 | one-lease-per-client was enabled. | |
3666 | ||
3667 | - Fix a bug that was causing core dumps on BSD/os in the presence of | |
3668 | malformed packets. | |
3669 | ||
3670 | - In partner-down state, don't restrict lease lengths to MCLT. | |
3671 | ||
3672 | - On the failover secondary, record the MCLT received from the primary | |
3673 | so that if we come up without a connection to the primary we don't | |
3674 | wind up giving out zero-length leases. | |
3675 | ||
3676 | - Fix some compilation problems on BSD/os. | |
3677 | ||
3678 | - Fix a bunch of memory leaks. | |
3679 | ||
3680 | - Fix a couple of bugs in the option printer. | |
3681 | ||
3682 | - Fix an obscure error reporting bug in the dns update code, and also | |
3683 | make the message clearer when a key algorithm isn't supported. | |
3684 | ||
3685 | - Fix a bug in the tracing code that prevented trace runs that used | |
3686 | tcp connections from being played back. | |
3687 | ||
3688 | - Add some additional debugging capability for catching memory leaks | |
3689 | on exit. | |
3690 | ||
3691 | - Make the client release the lease correctly on shutdown. | |
3692 | ||
3693 | - Add some configurability to the build system. | |
3694 | ||
3695 | - Install omshell manual page in man1, not man8. | |
3696 | ||
3697 | - Craig Gwydir sent in a patch that fixes a long-standing bug in the | |
3698 | DHCP client that could cause core dumps, but that for some reason | |
3699 | hadn't been noticed until now. | |
3700 | ||
3701 | Changes since 3.0 Release Candidate 7 | |
3702 | ||
3703 | - Fix a bug in failover where we weren't sending updates after a | |
3704 | transition from communications-interrupted to normal. | |
3705 | ||
3706 | - Handle expired/released/reset -> free transition according to the | |
3707 | protocol specification (this works - the other way not only wasn't | |
3708 | conformant, but also didn't work). | |
3709 | ||
3710 | - Add a control object in both client and server that allows either | |
3711 | daemon to be shut down cleanly. | |
3712 | ||
3713 | - When writing a lease, if we run out of disk space, shut down the | |
3714 | output file and insist on writing a new one before proceeding. | |
3715 | ||
3716 | - In the server, if the OMAPI listener port is occupied, keep trying | |
3717 | to get it, rather than simply giving up and exiting. | |
3718 | ||
3719 | - Support fetching variables from leases and also updating and adding | |
3720 | variables to leases via OMAPI. | |
3721 | ||
3722 | - If two failover peers have wildly different clocks, refuse to start | |
3723 | doing failover. | |
3724 | ||
3725 | - Fix a bug in the DNS update code that could cause core dumps when | |
3726 | running on alpha processors. | |
3727 | ||
3728 | - Fixed a bug in ddns updates for static lease entries, thanks to a | |
3729 | patch from Andrey M Linkevitch. | |
3730 | ||
3731 | - Add support for Darwin/MacOS X | |
3732 | ||
3733 | - Install omshell (including new documentation). | |
3734 | ||
3735 | - Support DNS updates in the client (this is a very obscure feature | |
3736 | that most DHCP client users probably will not be able to use). | |
3737 | ||
3738 | - Somewhat cleaner status logging in the client. | |
3739 | ||
3740 | - Make OMAPI key naming syntax compatible with the way keys are | |
3741 | actually named (key names are domain names). | |
3742 | ||
3743 | - Fix a bug in the lease file writer. | |
3744 | ||
3745 | - Install DHCP ISC headers in a different place than BIND 9 ISC | |
3746 | headers, to avoid causing trouble in BIND 9 builds. | |
3747 | ||
3748 | - Don't send updates for attributes on an object when the attributes | |
3749 | haven't changed. Support deleting attributes on remote objects. | |
3750 | ||
3751 | - Fix a number of bugs in omshell, and add the unset and refresh | |
3752 | statements. | |
3753 | ||
3754 | - Handle disconnects in OMAPI a little bit more intelligently (so that | |
3755 | the caller gets ECONNRESET instead of EINVAL). | |
3756 | ||
3757 | - Fix a bunch of bugs in the handling of clients that have existing | |
3758 | leases when the try to renew their leases while failover is | |
3759 | operating. | |
3760 | ||
eaf0b302 TL |
3761 | Changes since 3.0 Release Candidate 6 |
3762 | ||
3763 | - Fix a core dump that could happen when processing a DHCPREQUEST from | |
3764 | a client that had a host declaration that contained both a | |
3765 | fixed-address declaration and a dhcp-client-identifier option | |
3766 | declaration, if the client identifier was longer than nine bytes. | |
3767 | ||
3768 | - Fix a memory leak that could happen in certain obscure cases when | |
3769 | using omapi to manipulate leases. | |
3770 | ||
3771 | - Fix some bugs and omissions in omshell. | |
3772 | ||
eaf0b302 TL |
3773 | Changes since 3.0 Release Candidate 5 |
3774 | ||
3775 | - Fix a bug in omapi_object_dereference that prevented objects in | |
3776 | chains from having their reference counts decreased on dereference. | |
3777 | ||
3778 | - Fix a bug in omapi_object_dereference that would prevent object | |
3779 | chains from being freed upon removal of the last reference external | |
3780 | to the chain. | |
3781 | ||
3782 | - Fix a number of other memory leaks in the OMAPI protocol subsystem. | |
3783 | ||
3784 | - Add code in the OMAPI protocol handler to trace memory leakage. | |
3785 | ||
3786 | - Clean up the memory allocation/reference history printer. | |
3787 | ||
98311e4b | 3788 | - Support input of dotted quads and colon-separated hex lists as |
eaf0b302 TL |
3789 | attribute values in omshell. |
3790 | ||
98311e4b | 3791 | - Fix a typo in the Linux interface discovery code. |
eaf0b302 TL |
3792 | |
3793 | - Conditionalize a piece of trace code that wasn't conditional. | |
3794 | ||
3795 | Changes since 3.0 Release Candidate 4 | |
3796 | ||
3797 | - Fix a bug that would prevent leases from being abandoned properly on | |
3798 | DHCPDECLINE. | |
3799 | ||
3800 | - Fix failover peer OMAPI support. | |
3801 | ||
3802 | - In failover, correctly handle expiration of leases. Previously, | |
3803 | leases would never be reclaimed because they couldn't make the | |
3804 | transition from EXPIRED to FREE. | |
3805 | ||
3806 | - Fix some broken failover state transitions. | |
3807 | ||
3808 | - Documentation fixes. | |
3809 | ||
3810 | - Take out an unnecessary check in DHCP relay agent information option | |
3811 | stashing code that was preventing REBINDING clients from rebinding. | |
3812 | ||
3813 | - Prevent failover peers from allocating leases in DHCPREQUEST | |
3814 | processing if the lease belongs to the other server. | |
3815 | ||
3816 | - Record server version in lease file introductory comment. | |
3817 | ||
3818 | - Correctly report connection errors in OMAPI and failover. | |
3819 | ||
3820 | - Make authentication signature algorithm name comparisons in OMAPI | |
3821 | case-insensitive. | |
3822 | ||
3823 | - Fix compile problem on SunOS 4.x | |
3824 | ||
98311e4b | 3825 | - If a signature algorithm is not terminated with '.', terminate it so |
eaf0b302 TL |
3826 | that comparisons between fully-qualified names will work |
3827 | consistently. | |
3828 | ||
3829 | - Different SIOCGIFCONF probe code, may "fix" problem on some Linux | |
3830 | systems with the probe not working correctly. | |
3831 | ||
3832 | - Don't allow user to type omapi key on command line of omshell. | |
3833 | ||
0596b051 TL |
3834 | Changes since 3.0 Release Candidate 3 |
3835 | ||
3836 | - Do lease billing on startup in a way that I *think* will finally do | |
3837 | the billing correctly - the previous method could overbill as a | |
3838 | result of duplicate leases. | |
3839 | ||
3840 | - Document OMAPI server objects. | |
3841 | ||
892fe689 TL |
3842 | Changes since 3.0 Release Candidate 2 Patchlevel 1 |
3843 | ||
3844 | - Fix some problems in the DDNS update code. Thanks to Albert | |
3845 | Herranz for figuring out the main problem. | |
3846 | ||
3847 | - Fix some reference counting errors on host entries that were causing | |
3848 | core dumps. | |
3849 | ||
3850 | - Fix a byte-swap bug in the token ring code, thanks to Jochen | |
3851 | Friedrich. | |
3852 | ||
3853 | - Fix a bug in lease billing, thanks to Jonas Bulow. | |
3854 | ||
3855 | Changes since 3.0 Release Candidate 2 | |
3856 | ||
3857 | - Change the conditions under which a DHCPRELEASE is actually | |
3858 | committed to be consistent with lease binding states rather than | |
98311e4b | 3859 | using the lease end time. This may fix some problems with the |
892fe689 TL |
3860 | billing class code. |
3861 | ||
3862 | - Fix a bug where lease updates would fail on Digital Unix (and maybe | |
3863 | others) because malloc was called with a size of zero. | |
3864 | ||
3865 | - Fix a core dump that happens when the DHCP server can't create its | |
3866 | trace file. | |
3867 | ||
79ea3de8 | 3868 | Changes since 3.0 Release Candidate 1 Patchlevel 1 |
87784777 | 3869 | |
79ea3de8 TL |
3870 | - Fix the dhcp_failover_put_message to not attempt to allocate a |
3871 | zero-length buffer. Some versions of malloc() fail if you try to | |
3872 | allocate a zero-length buffer, and this was causing problems on, | |
3873 | e.g., Digital Unix. | |
3874 | ||
3875 | - Fix a case where the failover code was printing an error message | |
3876 | when no error had occurred. | |
3877 | ||
3878 | - Fix a problem where when a server went down and back up again, the | |
3879 | peer would not see a state transition and so would stay in the | |
3880 | non-communicating state. | |
3881 | ||
3882 | - Be smart about going into recover_wait. | |
3883 | ||
3884 | - Fix a problem in the failover implementation where peers would fail | |
3885 | to come into sync if interrupted in the RECOVER state. This could | |
3886 | have been the cause of some problems people have reported recently. | |
3887 | ||
3888 | - Fix a problem with billing classes where they would not be unbilled | |
3889 | when the client lease expired. | |
3890 | ||
3891 | - If select fails, figure out which descriptor is bad, and cut it out | |
3892 | of the I/O loop. This prevents a potentially nasty spin. I | |
3893 | haven't heard any report it in a while, but it came up consistently | |
3894 | in testing. | |
3895 | ||
3896 | - Fix a bug in the relay agent where if you specified interfaces on | |
3897 | the command line, it would fail. | |
3898 | ||
3899 | - Fix a couple of small bugs in the omapi connection object (no known | |
3900 | user impact). | |
3901 | ||
3902 | - Add the missing 3.0 Beta 1 lease conversion script. | |
3903 | ||
3904 | - Read dhcp client script hooks if they exist, rather than only if | |
3905 | they're executable. | |
3906 | ||
3907 | Changes since 3.0 Release Candidate 1 | |
87784777 TL |
3908 | |
3909 | - Fix a memory smash that happens when fixed-address leases are used. | |
3910 | ANY SITE AT WHICH FIXED-ADDRESS STATEMENTS ARE BEING USED SHOULD | |
3911 | UPGRADE IMMEDIATELY. This has been a long-standing bug - thanks to | |
3912 | Alvise Nobile for discovering it and helping me to find it! | |
3913 | ||
79ea3de8 TL |
3914 | - Fix a small bug in binary-to-ascii, thanks to H. Peter Anvin of |
3915 | Transmeta. | |
3916 | ||
87784777 TL |
3917 | - There is a known problem with the DHCP server doing failover on |
3918 | Compaq Alpha systems. This patchlevel is not a release candidate | |
3919 | because of this bug. The bug should be straightforward to fix, so | |
3920 | a new release candidate is expected shortly. | |
3921 | ||
3922 | - There is a known problem in the DDNS update code that is probably a | |
3923 | bug, and is not, as far as we know, fixed in this patchlevel. | |
3924 | ||
6d779c72 TL |
3925 | Changes since 3.0 Beta 2 Patchlevel 24 |
3926 | ||
3927 | - Went over problematic failover state transitions and made them all | |
3928 | work, so that failover should now much less fragile. | |
3929 | ||
3930 | - Add some dhcpctl and omapi documentation | |
3931 | ||
3932 | - Fix compile errors when compiling with unusual predefines. | |
3933 | ||
3934 | - Make Token Ring work on Linux 2.4 | |
3935 | ||
3936 | - Fix the Digital Unix BPF_WORDALIGN bug. | |
3937 | ||
3938 | - Fix some dhcp client documentation errors. | |
3939 | ||
3940 | - Update some parts of the README file. | |
3941 | ||
3942 | - Support GCC on SCO. | |
3943 | ||
adbef119 | 3944 | Changes since 3.0 Beta 2 Patchlevel 23 |
de57e64b TL |
3945 | |
3946 | - Fix a bug in the DNS update code where a status code was not being | |
3947 | checked. This may have been causing core dumps. | |
3948 | ||
3949 | - When parsing the lease file, if a lease declaration includes a | |
3950 | billing class statement, and the lease already has a billing class, | |
3951 | unbill the old class. | |
3952 | ||
3953 | - When processing failover transactions, where acks will be deferred, | |
3954 | process the state transition immediately. | |
3955 | ||
3956 | - Don't try to use the new SIOCGIFCONF buffer size detection code on | |
3957 | Linux 2.0, which doesn't provide this functionality. | |
3958 | ||
3959 | - Apply a patch suggested by Tuan Uong for a problem in dlpi.c. | |
3960 | ||
3961 | - Fix a problem in using the which command in the configure script. | |
3962 | ||
3963 | - Fix a parse error in the client when setting up an omapi listener. | |
3964 | ||
3965 | - Document the -n and -g flags to the client. | |
3966 | ||
3967 | - Make sure there is always a stdin and stdout on startup. This | |
3968 | prevents shell scripts from accidentally writing error messages into | |
3969 | configuration files that happen to be opened as stderr. | |
3970 | ||
3971 | - If an interface is removed, the client will now notice that it is | |
3972 | gone rather than spinning. This has only been tested on NetBSD. | |
3973 | ||
3974 | - The client will attempt to get an address even if it can't create a | |
3975 | lease file. | |
3976 | ||
3977 | - Don't overwrite tracefiles. | |
3978 | ||
3979 | - Fix some memory allocation bugs in failover. | |
2aa36519 | 3980 | |
adbef119 | 3981 | Changes since 3.0 Beta 2 Patchlevel 22 |
140158d3 TL |
3982 | |
3983 | - Apply some patches suggested by Cyrille Lefevre, who is maintaining | |
3984 | the FreeBSD ISC DHCP Distribution port. | |
3985 | ||
3986 | - Fix a core dump in DHCPRELEASE. | |
3987 | ||
adbef119 | 3988 | Changes since 3.0 Beta 2 Patchlevel 21 |
3a395e60 TL |
3989 | |
3990 | - This time for sure: fix the spin described in the changes for pl20. | |
3991 | ||
adbef119 | 3992 | Changes since 3.0 Beta 2 Patchlevel 20 |
fc74dd0c TL |
3993 | |
3994 | - Fix a problem with Linux detecting large numbers of interfaces (Ben) | |
3995 | ||
3996 | - Fix a memory smash in the quotify code, which was introduced in | |
3997 | pl19. | |
3998 | ||
3999 | - Actually fix the spin described in the changes for pl20. The | |
4000 | previous fix only partially fixed the problem - enough to get it | |
4001 | past the regression test. | |
4002 | ||
adbef119 | 4003 | Changes since 3.0 Beta 2 Patchlevel 19 |
ed5ee591 TL |
4004 | |
4005 | - Fix a bug that could cause the server to abort if compiled with | |
4006 | POINTER_DEBUG enabled. | |
4007 | ||
4008 | - Fix a bug that could cause the server to spin when responding to a | |
4009 | DHCPREQUEST. | |
4010 | ||
4011 | - Apply Joost Mulders' suggested patches for DLPI on x86. | |
4012 | ||
4013 | - Support NUL characters in quoted strings. | |
4014 | ||
4015 | - Install unformatted man pages on SunOS. | |
4016 | ||
adbef119 | 4017 | Changes since 3.0 Beta 2 Patchlevel 18 |
b3fad8ac | 4018 | |
3350f5b7 TL |
4019 | - Allow the server to be placed in partner-down state using OMAPI. |
4020 | (Damien Neil) | |
4021 | ||
4022 | - Implement omshell, which can be used to do arbitrary things to the | |
4023 | server (in theory). (Damien Neil) | |
4024 | ||
4025 | - Fix a case where if a client had two different leases the server could | |
4026 | actually dereference the second one when it hadn't been referenced, | |
4027 | leading to memory corruption and a core dump. (James Brister) | |
4028 | ||
4029 | - Fix a case where a client could request the address of another client's | |
4030 | lease, but find_lease wouldn't detect that the other client had it, and | |
4031 | would attempt to allocate it to the client, resulting in a lease conflict | |
4032 | message. | |
4033 | ||
4034 | - Fix a case where a client with more than one client identifier could be | |
4035 | given a lease where the hardware address was correct but the client | |
4036 | identifier was not, resulting in a lease conflict message. | |
4037 | ||
98311e4b | 4038 | - Fix a problem where the server could write out a colon-separated |
3350f5b7 TL |
4039 | hex list as a value for a variable, which would then not parse. |
4040 | The fix is to always write strings as quoted strings, with any | |
4041 | non-printable characters quoted as octal escape sequences. So | |
4042 | a file written the old way still won't work, but new files written | |
4043 | this way will work. | |
4044 | ||
b3fad8ac TL |
4045 | - Fix documentation for sending non-standard options. |
4046 | ||
4047 | - Use unparsable names for unknown options. WARNING: this will | |
4048 | break any configuration files that use the option-nnn convention. | |
4049 | If you want to continue to use this convention for some options, | |
4050 | please be sure to write a definition, like this: | |
4051 | ||
4052 | option option-nnn code nnn = string; | |
4053 | ||
4054 | You can use a descriptive name instead of option-nnn if you like. | |
4055 | ||
4056 | - Fix a problem where we would see a DHCPDISCOVER/DHCPOFFER/ | |
4057 | DHCPREQUEST/DHCPACK/DHCPREQUEST/DHCPNAK sequence. This was the | |
4058 | result of a deceptively silly bug in supersede_lease. | |
4059 | ||
4060 | - Fix client script exit status check, according to a fix supplied by | |
4061 | Hermann Lauer. | |
4062 | ||
4063 | - Fix an endianness bug in the tracefile support, regarding ICMP | |
4064 | messages. | |
4065 | ||
3350f5b7 TL |
4066 | - Fix a bug in the client where the medium would not work correctly if |
4067 | it contained quoted strings. | |
4068 | ||
b3fad8ac TL |
4069 | ** there was no pl17 ** |
4070 | ||
adbef119 | 4071 | Changes since 3.0 Beta 2 Patchlevel 16 |
e6d30fd6 | 4072 | |
6da9db9d TL |
4073 | - Add support for transaction tracing. This allows the state of the |
4074 | DHCP server on startup, and all the subsequent transactions, to be | |
4075 | recorded in a file which can then be played back to reproduce the | |
4076 | behaviour of the DHCP server. This can be used to quickly | |
4077 | reproduce bugs that cause core dumps or corruption, and also for | |
4078 | tracking down memory leaks. | |
4079 | ||
4080 | - Incorporate some bug fixes provided by Joost Mulders for the DLPI | |
4081 | package which should clear up problems people have been seeing on | |
4082 | Solaris. | |
4083 | ||
4084 | - Fix bugs in the handling of options stored as linked lists (agent | |
4085 | options, fqdn options and nwip options) that could cause memory | |
4086 | corruption and core dumps. | |
4087 | ||
4088 | - Fix a bug in DHCPREQUEST handling that resulted in DHCPNAK messages | |
4089 | not being send in some cases when they were needed. | |
4090 | ||
4091 | - Make the lease structure somewhat more compact. | |
4092 | ||
4093 | - Make initial failover startup *much* faster. This was researched | |
4094 | and implemented by Damien Neil. | |
4095 | ||
4096 | - Add a --version flag to all executables, which prints the program | |
4097 | name and version to standard output. | |
4098 | ||
4099 | - Don't rewrite the lease file every thousand leases. | |
4100 | ||
e6d30fd6 TL |
4101 | - A bug in nit.c for older SunOS machines was fixed by a patch sent in |
4102 | by Takeshi Hagiwara. | |
4103 | ||
6da9db9d TL |
4104 | - Fix a memory corruption bug in the DHCP client. |
4105 | ||
4106 | - Lots of documentation updates. | |
4107 | ||
4108 | - Add a feature allowing environment variables to be passed to the | |
4109 | DHCP client script on the DHCP client command line. | |
4110 | ||
4111 | - Fix client medium support, which had been broken for some time. | |
4112 | ||
4113 | - Fix a bug in the DHCP client initial startup backoff interval, which | |
4114 | would cause two DHCPDISCOVERS to be sent back-to-back on startup. | |
4115 | ||
adbef119 | 4116 | Changes since 3.0 Beta 2 Patchlevel 15 |
af49fdff TL |
4117 | |
4118 | - Some documentation tweaks. | |
4119 | ||
4120 | - Maybe fix a problem in the DLPI code. | |
4121 | ||
4122 | - Fix some error code space inconsistencies in ddns update code. | |
4123 | ||
4124 | - Support relay agents that intercept unicast DHCP messages to stuff | |
4125 | agent options into them. | |
4126 | ||
4127 | - Fix a small memory leak in the relay agent option support code. | |
4128 | ||
c5b569f8 TL |
4129 | - Fix a core dump that would occur if a packet was sent with no |
4130 | options. | |
4131 | ||
adbef119 | 4132 | Changes since 3.0 Beta 2 Patchlevel 14 |
754ae3e9 TL |
4133 | |
4134 | - Finish fixing a long-standing bug in the agent options code. This | |
4135 | was causing core dumps and failing to operate correctly - in | |
4136 | particular, agent option stashing wasn't working. Agent option | |
4137 | stashing should now be working, meaning that agent options can be | |
4138 | used in class statements to control address allocation. | |
4139 | ||
4140 | - Fix up documentation. | |
4141 | ||
4142 | - Fix a couple of small memory leaks that would have added up | |
4143 | significantly in a high-demand situation. | |
4144 | ||
4145 | - Add a log-facility configuration parameter. | |
4146 | ||
4147 | - Fix a compile error on some older operating systems. | |
4148 | ||
4149 | - Add the ability in the client to execute certain statements before | |
4150 | transmitting packets to the server. Handy for debugging; not much | |
4151 | practical use otherwise. | |
4152 | ||
4153 | - Don't send faked-out giaddr when renewing or bound - again, useful | |
4154 | for debugging. | |
4155 | ||
adbef119 | 4156 | Changes since 3.0 Beta 2 Patchlevel 13 |
2f2e7960 TL |
4157 | |
4158 | - Fixed a problem where the fqdn decoder would sometimes try to store | |
4159 | an option with an (unsigned) negative length, resulting in a core | |
4160 | dump on some systems. | |
4161 | ||
4162 | - Work around the Win98 DHCP client, which NUL-terminates the FQDN | |
4163 | option. | |
4164 | ||
4165 | - Work around Win98 and Win2k clients that will claim they want to do | |
4166 | the update even when they don't have any way to do it. | |
4167 | ||
4168 | - Fix some log messages that can be printed when failover is operating | |
4169 | that were not printing enough information. | |
4170 | ||
4171 | - It was possible for a DHCPDISCOVER to get an allocation even when | |
4172 | the state machine said the server shouldn't be responding. | |
4173 | ||
4174 | - Don't load balance DHCPREQUESTs from clients in RENEWING and | |
4175 | REBINDING, since in RENEWING, if we heard it, it's for us, and in | |
4176 | REBINDING, the client wouldn't have got to REBINDING if its primary | |
4177 | were answering. | |
4178 | ||
4179 | - When we get a bogus state lease binding state transition, don't do | |
4180 | the transition. | |
9a111ee8 | 4181 | |
2f2e7960 | 4182 | |
adbef119 | 4183 | Changes since 3.0 Beta 2 Patchlevel 12 |
66e98927 TL |
4184 | |
4185 | - Fixed a couple of silly compile errors. | |
4186 | ||
a1e2e3d6 TL |
4187 | Changes since 3.0 Beta 2 Patchlevel 11 |
4188 | ||
4189 | - Albert Herranz tracked down and fixed a subtle bug in the base64 | |
4190 | decoder that would prevent any key with an 'x' in its base64 | |
4191 | representation from working correctly. | |
4192 | ||
4193 | - Thanks to Chris Cheney and Michael Sanders, we have a fix for the | |
4194 | hang that they both spotted in the DHCP server - when | |
4195 | one-lease-per-client was set, the code to release the "other" lease | |
4196 | could spin. | |
4197 | ||
4198 | - Fix a problem with alignment of the input buffer in bpf in cases | |
4199 | where two packets arrive in the same bpf read. | |
4200 | ||
4201 | - Fix a problem where the relay agent would crash if you specified an | |
4202 | interface name on the command line. | |
4203 | ||
4204 | - Add the ability to conditionalize client behaviour based on the | |
4205 | client state. | |
4206 | ||
4207 | - Add support for the FQDN option, and added support for a new way of | |
4208 | doing ddns updates (ddns update style interim) that allows more than | |
4209 | one DHCP server to update the DNS for the same network(s). This | |
4210 | was implemented by Damien Neil with some additional functionality | |
4211 | added by Ted Lemon. | |
4212 | ||
4213 | - Damien added a "log" statement, so that the configuration file can | |
4214 | be made to log debugging information and other information. | |
4215 | ||
4216 | - Fixed a bug that caused option buffers not to be terminated with an | |
4217 | end option. | |
4218 | ||
4219 | - Fixed a long-standing bug in the support for option spaces where the | |
4220 | options are stored as an ordered list rather than in a hash table, | |
4221 | which could theoretically result in memory pool corruption. | |
4222 | ||
4223 | - Prevent hardware declarations with no actual hardware address from | |
4224 | being written as something unparsable, and behave correctly in the | |
4225 | face of a null hardware address on input. | |
4226 | ||
4227 | - Allow key names to be FQDNs, and qualify the algorithm name if it is | |
4228 | specified unqualified. | |
4229 | ||
4230 | - Modify the DDNS update code so that it never prints the "resolver | |
4231 | failed" message, but instead says *why* the resolver failed. | |
4232 | ||
4233 | - Officially support the subnet selection option, which now has an | |
4234 | RFC. | |
4235 | ||
4236 | - Fix a build bug on MacOS X. | |
4237 | ||
4238 | - Allow administrator to disable ping checking. | |
4239 | ||
4240 | - Clean up dhcpd.conf documentation and add more information about how | |
4241 | it works. | |
4242 | ||
6c68ec36 TL |
4243 | Changes since 3.0 Beta 2 Patchlevel 10 |
4244 | ||
4245 | - Fix a bug introduced during debugging (!) and accidentally committed | |
4246 | to CVS. | |
4247 | ||
9fd337e7 TL |
4248 | Changes since 3.0 Beta 2 Patchlevel 9 |
4249 | ||
4250 | - Fix DHCP client handling of vendor encapsulated options. | |
4251 | ||
4252 | - Fix a bug in the handling of relay agent information options introduced | |
4253 | in patchlevel 9. | |
4254 | ||
4255 | - Stash agent options on client leases by default, and use the stashed | |
4256 | options at renewal time. | |
4257 | ||
4258 | - Add the ability to test the client's binding state in the client | |
4259 | configuration language. | |
4260 | ||
4261 | - Fix a core dump in the DNS update code. | |
4262 | ||
4263 | - Fix some expression evaluation bugs that were causing updates to be | |
4264 | done when no client hostname was received. | |
4265 | ||
4266 | - Fix expression evaluation debugging printfs. | |
4267 | ||
4268 | - Teach pretty_print_option to print options in option spaces other than | |
4269 | the DHCP option space. | |
4270 | ||
4271 | - Add a warning message if the RHS of a not is not boolean. | |
4272 | ||
4273 | - Never select for more than a day, because some implementations of | |
4274 | select will just fail if the timeout is too long (!). | |
4275 | ||
4276 | - Fix a case where a DHCPDISCOVER from an unknown network would be | |
4277 | silently dropped. | |
4278 | ||
4279 | - Fix a bug where if a client requested an IP address for which a different | |
4280 | client had the lease, the DHCP server would reallocate it anyway. | |
4281 | ||
4282 | - Fix the DNS update code so that if the client changes its name, the DNS | |
4283 | will be correctly updated. | |
4284 | ||
3922772a TL |
4285 | Changes since 3.0 Beta 2 Patchlevel 8 |
4286 | ||
4287 | - Oops, there was another subtle math error in the header-length | |
4288 | bounds-checking. | |
4289 | ||
4290 | Changes since 3.0 Beta 2 Patchlevel 7 | |
848c2547 TL |
4291 | |
4292 | - Oops, forgot to byte-swap udp header length before bounds-checking it. | |
4293 | ||
3922772a | 4294 | Changes since 3.0 Beta 2 Patchlevel 6 |
0f6045f8 | 4295 | |
f8572308 TL |
4296 | - Fix a possible DoS attack where a client could cause the checksummer |
4297 | to dump core. This was a read, not a write, so it shouldn't be | |
4298 | possible to exploit it any further than that. | |
4299 | ||
4300 | - Implement client- and server-side support for using the Client FQDN | |
4301 | option. | |
4302 | ||
4303 | - Support for other option spaces in the client has been added. This | |
4304 | means that it is now possible to define a vendor option space on the | |
4305 | client, request options in that space from the server (which must | |
4306 | define the same option space), and then use those options in the | |
4307 | client. This also allows NWIP and Client FQDN options to be used | |
4308 | meaningfully. | |
4309 | ||
4310 | - Add object initializer support. This means that objects can now be | |
4311 | initialized to something other than all-zeros when allocated, which | |
4312 | makes, e.g., the interface object support code a little more robust. | |
4313 | ||
4314 | - Fix an off-by-one bug in the host stuffer. This was causing host | |
4315 | deletes not the work, and may also have been causing OMAPI | |
4316 | connections to get dropped. Thanks to James Brister for tracking | |
4317 | this one down! | |
4318 | ||
4319 | - Fixed a core dump in the interface discovery code that is triggered | |
4320 | when there is no subnet declaration for an interface, but the server | |
4321 | decides to continue running. Thanks to Shane Kerr for tracking | |
4322 | down and fixing this problem. | |
4323 | ||
4324 | Changes since 3.0 Beta 2 Patchlevel 5 | |
4325 | ||
0f6045f8 TL |
4326 | - Fix a bug in the recent enhancement to the interface discovery code |
4327 | to support arbitrary-length interface lists. | |
4328 | ||
4329 | - Support NUL-terminated DHCP options when initializing client-script | |
4330 | environment. | |
4331 | ||
4332 | - Fix suffix operator. | |
4333 | ||
4334 | - Fix NetWare/IP option parsing. | |
4335 | ||
4336 | - Better error/status checking in dhcpctl initialization and omapi | |
4337 | connection code. | |
4338 | ||
4339 | - Fix a potential memory smash in dhcpctl code. | |
4340 | ||
4341 | - Fix SunOS4 and (maybe) Ultrix builds. | |
4342 | ||
4343 | - Fix a bug where a certain sort of incoming packet could cause a core | |
4344 | dump on Solaris (and probably elsewhere). | |
4345 | ||
4346 | - Add some more safety checks in error logging code. | |
4347 | ||
4348 | - Add support for ISC_R_INCOMPLETE in OMAPI protocol connection code. | |
4349 | ||
4350 | - Fix relay agent so that if an interface is specified on the command | |
4351 | line, the relay agent does not dump core. | |
4352 | ||
4353 | - Fix class matching so that match if can be combined with match or | |
4354 | spawn with. | |
4355 | ||
4356 | - Do not allow spurious leases in the lease database to introduce | |
4357 | potentially bogus leases into the in-memory database. | |
4358 | ||
4359 | - Fix a byte-order problem in the client hardware address type code | |
4360 | for OMAPI. | |
4361 | ||
4362 | - Be slightly less picky about what sort of hardware addresses OMAPI | |
4363 | can install in host declarations. | |
4364 | ||
801de092 TL |
4365 | Changes since 3.0 Beta 2 Patchlevel 4 |
4366 | ||
4367 | - Incorporated Peter Marschall's proposed change to array/record | |
4368 | parsing, which allows things like the slp-agent option to be encoded | |
4369 | correctly. Thanks very much to Peter for taking the initiative to | |
4370 | do this, and for doing such a careful job of it (e.g., updating the | |
4371 | comments)! | |
4372 | ||
4373 | - Added an encoding for the slp-agent option. :') | |
4374 | ||
6ed7a93d TL |
4375 | - Fixed SunOS 4 build. Thanks to Robert Elz for responding to my |
4376 | request for help on this with patches! | |
4377 | ||
4378 | - Incorporated a change that should fix a problem reported by Philippe | |
4379 | Jumelle where when the network connection between two servers is | |
4380 | lost, they never reconnect. | |
4381 | ||
4382 | - Fix client script files other than that for NetBSD to actually use | |
4383 | make_resolv_conf as documented in the manual page. | |
4384 | ||
4385 | - Fix a bug in the packet handling code that could result in a core | |
4386 | dump. | |
4387 | ||
4388 | - Fix a bug in the bootp code where responses on the local net would | |
4389 | be sent to the wrong MAC address. Thanks to Jerry Schave for | |
4390 | catching this one. | |
4391 | ||
490eb5e7 TL |
4392 | Changes since 3.0 Beta 2 Patchlevel 3 |
4393 | ||
4394 | - In the DHCP client, execute client statements prior to using the values | |
45d545f0 | 4395 | of options, so that the client configuration can overridden, e.g., the |
490eb5e7 TL |
4396 | lease renewal time. |
4397 | ||
4398 | - Fix a reference counting error that would result in very reproducible | |
4399 | failures in updates, as well as occasional core dumps, if a zone was | |
4400 | declared without a key. | |
4401 | ||
4402 | - Fix some Linux 2.0 compilation problems. | |
4403 | ||
4404 | - Fix a bug in scope evaluation during execution of "on" statements that | |
4405 | caused values not to be recorded on leases. | |
4406 | ||
4407 | - If the dhcp-max-message-size option is specified in scope, and the | |
4408 | client didn't send this option, use the one specified in scope to | |
4409 | determine the maximum size of the response. | |
4410 | ||
592d8153 TL |
4411 | Changes since 3.0 Beta 2 Patchlevel 2 |
4412 | ||
359b023e TL |
4413 | - Fix a case where spawning subclasses were being allocated |
4414 | incorrectly, resulting in a core dump. | |
4415 | ||
592d8153 TL |
4416 | - Fix a case where the DHCP server might inappropriately NAK a |
4417 | RENEWING client. | |
4418 | ||
4419 | - Fix a place dhcprequest() where static leases could leak. | |
4420 | ||
4421 | - Include memory.h in omapip_p.h so that we don't get warnings about | |
4422 | using memcmp(). | |
4423 | ||
2aa36519 TL |
4424 | Changes since 3.0 Beta 2 Patchlevel 1 |
4425 | ||
4426 | - Notice when SIOCFIGCONF returns more data than fit in the buffer - | |
4427 | allocate a larger buffer, and retry. Thanks to Greg Fausak for | |
4428 | pointing this out. | |
4429 | ||
4430 | - In the server, if no interfaces were configured, report an error and | |
4431 | exit. | |
4432 | ||
4433 | - Don't ever record a state of 'startup'. | |
4434 | ||
4435 | - Don't try to evaluate the local failover binding address if none was | |
4436 | specified. Thanks to Joseph Breu for finding this. |