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Commit | Line | Data |
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98311e4b | 1 | Internet Systems Consortium DHCP Distribution |
c76a506e | 2 | Version 4.0.0rc1 |
b947f983 | 3 | December 10, 2007 |
72c7bd79 | 4 | |
98311e4b | 5 | Release Notes |
72c7bd79 | 6 | |
da411127 | 7 | NEW FEATURES |
16449d9c | 8 | |
98bd7ca0 DH |
9 | The DHCP server in version 4.0.x of the ISC DHCP Distribution supports |
10 | DHCPv6 in addition to DHCP for IPv4. | |
11 | ||
12 | Several new options have been added to the dhcpd executable, which are | |
13 | documented in the man page. Several changes have been made to the | |
14 | configuration file as well, which are also documented in the man | |
15 | pages. | |
16 | ||
45d545f0 | 17 | There are a number of DHCPv6 limitations and features missing in this |
98bd7ca0 DH |
18 | release, which will be addressed shortly: |
19 | ||
99fe695e | 20 | - Only Solaris, Linux, FreeBSD, NetBSD, and OpenBSD are supported. |
98bd7ca0 | 21 | |
39725d92 DH |
22 | - There is no DHCPv6 Relay Agent implementation. There are only DHCPv6 |
23 | Server and Client implementations. | |
98bd7ca0 | 24 | |
39725d92 | 25 | - Only a single address is supported per IA. |
98bd7ca0 DH |
26 | |
27 | - IA_TA addresses are not supported. | |
3a16098f | 28 | |
98bd7ca0 | 29 | - IA_PD prefixes are not supported. |
29d5553a | 30 | |
98bd7ca0 DH |
31 | - DHCPv6 includes human-readable text in status code messages. These |
32 | should be configurable, and probably localized via gettext() or the | |
33 | like. | |
34 | ||
35 | - The "host-identifier" option is limited to a simple token. | |
36 | ||
37 | - Dynamically allocated leases do not respond to Confirm messages. | |
38 | ||
98bd7ca0 | 39 | - The client and server can only operate DHCPv4 or DHCPv6 at a time, |
45d545f0 | 40 | not both. To use both protocols simultaneously, two instances of the |
6de1f33e | 41 | relevant daemon are required, one with the '-6' command line option. |
4ff4053b | 42 | |
ca4606b5 TL |
43 | For information on how to install, configure and run this software, |
44 | as well as how to find documentation and report bugs, please consult | |
45 | the README file. | |
46 | ||
fe5b0fdd DH |
47 | ISC DHCP now uses standard GNU configure for installation. Please |
48 | review the output of "./configure --help" to see what options are | |
49 | available. | |
50 | ||
51 | The system has only been tested on Linux, FreeBSD, and Solaris, and | |
52 | may not work on other platforms. Please report any problems and | |
53 | suggested fixes to <dhcp-users@isc.org>. | |
98bd7ca0 | 54 | |
61d75ea2 | 55 | |
1dcc3612 | 56 | Changes since 4.0.0 |
3c12f746 | 57 | |
022fe95e EH |
58 | - It's now possible to update the "ends" field of a lease with OMAPI. |
59 | This is useful if you want not only to release a lease, but also make | |
60 | it available for reuse right away. Hat tip to Christof Chen. | |
61 | ||
e4a896be EH |
62 | - Fixed "--version" flag in dhcrelay |
63 | ||
3c12f746 DH |
64 | - The warning logged when an address range doesn't fit in the subnets |
65 | they were declared has been updated to be more helpful and identify the | |
66 | typo in configuration that created the spanning addresses. | |
67 | ||
00638355 DH |
68 | - The 'min-secs' configuration parameter's log message has been updated to |
69 | be more helpful. | |
70 | ||
99363a74 DH |
71 | - A cosmetic bug during potential-conflict recovery that caused the peer's |
72 | 'conflict-done' state message to be logged as 'unknown-state' has been | |
73 | repaired. It is now logged correctly. | |
74 | ||
1dcc3612 SK |
75 | - Fixed definition of the iaaddr hash functions to use the correct |
76 | functions when referencing and dereferencing memory. | |
77 | ||
f71bc988 DH |
78 | - A bug in failover pool rebalancing that caused POOLREQ message ping-pongs |
79 | was repaired. | |
80 | ||
81 | - A flaw in failover pool rebalancing that could cause POOLREQ messages to | |
82 | be sent outside of the min-balance/max-balance scheduled intervals has | |
83 | been repaired. | |
84 | ||
aabfa4de FD |
85 | - Some definitions not in phase with the IANA registry were updated. |
86 | ||
0674055a FD |
87 | - Allocated interface IDs are better controlled ('u' bit set to zero, |
88 | reserved IDs avoided). | |
89 | ||
b51c785f FD |
90 | - Unicast options are taken into account only for RENEWs. |
91 | ||
900405e9 FD |
92 | - NoAddrsAvail answers to SOLICITs are always ADVERTISEs even when a SOLICIT |
93 | carries a rapid-commit option. | |
94 | ||
96b620e5 FD |
95 | - Return in place of raise an impossible condition when one tries to release |
96 | an empty active lease. | |
97 | ||
be62cf06 FD |
98 | - Timer granularity is now 1/100s in the DHCPv6 client. |
99 | ||
49f61135 DH |
100 | - A bug was fixed where the 'giaddr' may be used to find the client's subnet |
101 | rather than its own 'ciaddr'. | |
102 | ||
41d4652f DH |
103 | - A log message was introduced to clarify the situation where a failover |
104 | 'address' parameter (the server's local address) did not resolve to an | |
105 | IPv4 address. | |
106 | ||
2c9bf1f4 DH |
107 | - The minimum site code value was set to 224 in 3.1.0 to track RFC3942. This |
108 | broke a lot of legacy site local configurations. The new code in place will | |
109 | track site local space minimum option codes and logs a warning to encourage | |
110 | updates and exploration of site local code migration problems. Option | |
111 | codes less than 128 in site local spaces remain inaccessible. | |
112 | ||
113 | - A possible relay agent option bug was repaired where random server | |
114 | initialization state may have been used to signal the relay agent | |
115 | information options sub-option code for the 'END' of the option space. | |
116 | ||
cff9b78f SK |
117 | - Fixes to allow code to compile and run on Solaris 9. |
118 | ||
c4d29896 SK |
119 | - Fixes to allow code to compile on Mac OS X Leopard (10.5). |
120 | ||
57fcb8d9 SK |
121 | - When server is configured with options that it overrides, a warning is |
122 | issued when the configuration file is read, rather than at the time the | |
123 | option is overridden. This was important, because the warning was given | |
124 | every time the option was overridden, which could create a lot of | |
125 | unnecessary logging. | |
126 | ||
219a65eb DH |
127 | - Fixed a compilation problems on platforms that define a value for FDDI, |
128 | which conflicts with a dhcp configuration syntax token by the same name. | |
129 | ||
30922d9c DH |
130 | - The dhclient-script was updated to create a host route for the default |
131 | gateway if the supplied subnet mask for an IPv4 address was a /32. This | |
132 | allows the client to work in 'captive' network environments, where the | |
133 | operator does not want clients to crosstalk directly. | |
134 | ||
61d75ea2 DH |
135 | Changes since 4.0.0b3 |
136 | ||
137 | - The reverse dns name for PTR updates on IPv6 addresses has been fixed to | |
138 | use ip6.arpa. rather than default to in-addr.arpa and require user | |
139 | configuration. | |
76db44f9 | 140 | |
e32529a5 EH |
141 | - dhc6_lease_destroy() and dhc6_ia_destroy() now set lease and IA pointers |
142 | to NULL after freeing, to prevent subsequent accesses to freed memory. | |
143 | ||
76db44f9 SK |
144 | - The DHCPv6 server would not send the preference option unless the |
145 | client requested it, via the ORO. This has been fixed, so the DHCPv6 | |
146 | server will always send the preference value if it is configured. | |
e4a6be15 | 147 | |
6f76de58 SK |
148 | - When addresses were passed as hints to the server in an IA, they were |
149 | incorrectly handled, sometimes being treated as an error. Now the | |
150 | server will treat these as hints and ignore them if it cannot supply | |
151 | a requested address. | |
152 | ||
703873ab DH |
153 | - If the client had multiple addresses, and one expired (was not renewed |
154 | by the server), the client would continue to attempt to renew the same | |
155 | old address over and over. Now, the client will omit any expired | |
156 | addresses from future Confirm, Renew, or Rebind messages. | |
157 | ||
158 | - dhclient -6 will now select renew/rebind timers based upon the longest | |
159 | address expiration time rather than the shortest expiration time, in | |
160 | order to avoid cascading renewals in the event a server elects not to | |
161 | extend one of multiple IAADDR leases. | |
162 | ||
b024480e DH |
163 | - The server now limits clients that request multiple addresses to one |
164 | address per IA by default, which can be adjusted through the | |
165 | "limit-addrs-per-ia" configuration option. | |
166 | ||
c0216cb7 DH |
167 | - The DHCPv6 client now issues fresh transaction IDs on Renew and Rebind |
168 | message exchanges, rather than using the most recent ID. | |
169 | ||
1ac57173 FD |
170 | - The DHCPv6 server now replies to Information-Request messages. |
171 | ||
83835822 DH |
172 | - A bug was fixed in the dhclient-script for BSDs to correctly carry error |
173 | codes through some conditions. | |
174 | ||
c54db708 FD |
175 | - The parsing of some options in the dhclient lease file, in particular |
176 | the success DHCPv6 status-code, was fixed. | |
177 | ||
e5d83524 DH |
178 | - A bug was fixed that caused the DHCPv6 ORO option to be corrupted with |
179 | seemingly random values. | |
180 | ||
821f2dda DH |
181 | - A reference overleak in DHCPv6 shared network processing was repaired. |
182 | ||
f8b3c6f4 DH |
183 | - ./configure now autodetects local database locations rather than trying |
184 | to put dhcpd.leases and dhclient.leases in /usr/local/var/db, which no | |
185 | one ever has. | |
186 | ||
b9137d42 SK |
187 | - Regression fix for bug where server advertised a IPv6 address in |
188 | response to a SOLICIT but would not return the address in response | |
189 | to a REQUEST. | |
190 | ||
9f1d5a2f DH |
191 | - A bug was fixed where the DHCPv6 server puts the NoAddrsAvail status |
192 | code in the IA_NA was fixed. The status code now appears in the root | |
193 | level. | |
194 | ||
e4a6be15 DH |
195 | Changes since 4.0.0b2 |
196 | ||
65cf86d7 EH |
197 | - Clarified error message when lease limit exceeded |
198 | ||
b1d3778c DH |
199 | - Relative time may now be used as a qualifier for 'allow' and 'deny' access |
200 | control lists. These directives may be used to assist in re-addressing | |
201 | address pools without having to constantly reconfigure the server. Please | |
202 | see 'man dhcpd.conf' for more information on allow/deny 'after time' syntax. | |
203 | Thanks to a patch from Christof Chen. | |
204 | ||
bead14ea DH |
205 | - The server will now include multiple IA_NA's and multiple IAADDRs within |
206 | them, if advertised by the client. It still only seeks to allocate one | |
207 | new address. | |
208 | ||
f765ec36 SK |
209 | Changes since 4.0.0b1 |
210 | ||
75135a3f EH |
211 | - Use different paths for PID and lease files when running in DHCPv4 |
212 | or DHCPv6 mode, so that servers for both protcols can be run | |
213 | simultaneously on a single interface. | |
214 | ||
5c2d55c7 EH |
215 | - Fixed a buffer overflow error which could have allowed a denial |
216 | of service under unusual server configurations | |
217 | ||
218 | - Eliminated a spurious error message from the client | |
219 | ||
f765ec36 SK |
220 | - A number of bugs with the internal handling of lease state on the |
221 | server have been fixed. Some of these could cause server crashes. | |
fa9b593d | 222 | |
edb1283e DH |
223 | - The peer_wants_leases() changes pulled up from 3.1.0 were corrected, |
224 | 'never used' leases will no longer consistently shift between servers | |
225 | on every pool rebalance run. | |
226 | ||
c71c6399 DH |
227 | - sendmsg()/recvmsg() control buffers are now declared in such a way to |
228 | ensure they are correctly aligned on all (esp. 64-bit) architectures. | |
229 | ||
5279b8f3 DH |
230 | - The client leasing subsystem was streamlined and corrected to account |
231 | more closely for changes in client link attachment selection. | |
232 | ||
ab3a540f | 233 | Changes since 4.0.0a3 |
763cba6b | 234 | |
884a458f SK |
235 | - The DHCP server no longer requires a "ddns-update-style" statement, |
236 | and now defaults to "none", which means DNS updates are disabled. | |
237 | ||
fa9b593d DH |
238 | - Log messages when failover peer names mismatch have been improved to |
239 | point out the problem. | |
240 | ||
1b5053b5 SK |
241 | - Bug where server advertised a IPv6 address in response to a SOLICIT |
242 | but would not return the address in response to a REQUEST. Thanks to | |
243 | Dennis Kou for finding the bug. | |
244 | ||
c886c298 SK |
245 | - Fixed an error causing the server to lock up on lease expiration, |
246 | reported independently by Jothilingam Vasu and Dennis Kou. | |
247 | ||
eaf7eb17 DH |
248 | - Fixed a ./configure bug where compile tests were failing due to |
249 | "-Werror" (unused variable) rather than the actual test failure. Lead | |
250 | to inconsistent and unworkable auto-configurations. | |
251 | ||
109e00db DH |
252 | - Compilation with DLPI and -Werror has been repaired. |
253 | ||
3ad9d48f SK |
254 | - Error in decoding IA_NA option if multiple interfaces are present |
255 | fixed by Marcus Goller. | |
256 | ||
8eab95f2 DH |
257 | - DHCPv6 server Confirm message processing has been enhanced - it no |
258 | longer replies only to clients with host {} records, it now replies | |
259 | as directed in RFC3315 section 18.2.2 - that is, to all clients | |
260 | regardless of the existence of bindings. | |
261 | ||
07b9a351 DH |
262 | - A core dump during expired lease cleanup has been repaired. |
263 | ||
7285af30 DH |
264 | - DDNS updates state information are now stored in 'binding scopes' that |
265 | follow the leases through their lifecycles. This enables DDNS teardowns | |
266 | on leases that are assigned and expired inbetween a server restart (the | |
267 | state is recovered from dhcpd.leases). Arbitrary user-specified binding | |
268 | scopes ('set var = "value";') are not yet supported. | |
269 | ||
2394b26b DH |
270 | - Additional compilation problems on HP/UX have been repaired. |
271 | ||
ab3a540f SK |
272 | Changes since 4.0.0a2 |
273 | ||
97050349 SK |
274 | - Fix for startup where there are no IPv4 addresses on an interface. |
275 | Thanks to Marcus Goller for reporting the bug. | |
276 | ||
763cba6b | 277 | - Fixed file descriptor leak on listen failure. Thanks to Tom Clark. |
e889ded1 | 278 | |
237f8d3a SK |
279 | - Bug in server configuration parser caused server to get stuck on |
280 | startup for certain bad pool declarations. Thanks to Guillaume | |
281 | Knispel for the bug report and fix. | |
282 | ||
28868515 SK |
283 | - Code cleaned to remove warnings reported by "gcc -Wall". |
284 | ||
d00d373a SK |
285 | - DHCPv6 is now the default. You can disable DHCPv6 support using the |
286 | "--disable-dhcpv6" flag when you run the configure script. | |
287 | ||
8dfd5744 DH |
288 | - An internal database inconsistency bug was repaired where the server |
289 | would segfault if a client attempted to renew a lease that had been | |
290 | loaded from persistent storage. | |
291 | ||
45d545f0 | 292 | - 'request' and 'also request' syntaxes have been added to accommodate |
0c20eab3 DH |
293 | the DHCPv6 client configuration. 'send dhcp6.oro' is no longer |
294 | necessary. | |
295 | ||
f800f4f6 SK |
296 | - Bug fixed where configuration file parsing did not work with |
297 | zero-length options; this made it impossible to set the | |
298 | rapid-commit option. | |
299 | ||
845e9677 DH |
300 | - Bogus messages about host records with IPv4 fixed-addresses being of |
301 | non-128-bits in length were removed. | |
302 | ||
76c944da SK |
303 | Changes since 4.0.0a1 |
304 | ||
71765b58 SK |
305 | - Bug in octal parsing fixed. Thanks to Bernd Fuhrmann for the report |
306 | and fix. | |
307 | ||
847e7000 SK |
308 | - Autoconf now supplies proper flags for Solaris DHCPv6 builds. |
309 | ||
bda33169 SK |
310 | - Fix for parsing error on some IPv6 addresses. |
311 | ||
9b21e73e SK |
312 | - Invalid CIDR representation for IPv6 subnets or ranges now checked |
313 | for when loading configuration. | |
314 | ||
8da06bb1 DH |
315 | - Compilation on HP/UX has been repaired. The changes should generally |
316 | apply to any architecture that supplies SIOCGLIFCONF but does not | |
317 | use 'struct lifconf' structures to pass values. | |
318 | ||
dd328225 DH |
319 | - Two new operators, ~= and ~~, have been integrated to implement |
320 | boolean matches by regular expression (such as may be used in | |
321 | class matching statements). Thanks to a patch by Alexandr S. | |
322 | Agranovsky, which underwent slight modification. | |
323 | ||
76c944da SK |
324 | - Fix for icmp packets on 64-bit systems (bug introduced in 4.0). |
325 | ||
f796f70a DH |
326 | - A bug was fixed in interface discovery wherein an error identifying |
327 | a server-configured interface with no IPv4 addresses would SEGV. | |
76c944da | 328 | |
c11f349d EH |
329 | - Fixed a bug in which write_lease() might report a failure incorrectly |
330 | ||
af5fa176 EH |
331 | - Added support for DHCPv6 Release messages |
332 | ||
333 | - Added -x option to dhclient, which triggers dhclient processes | |
334 | to exit gracefully without releasing leases first | |
335 | ||
a546f2a7 EH |
336 | - All binaries (client, server, relay) now change directories |
337 | to / before going into daemon mode, so as not to hold $CWD open | |
338 | ||
b55d0d5f EH |
339 | - Fixed a bug parsing DHCPv6 client-id's in host-identifier statements |
340 | ||
26be82af DH |
341 | - Fixed a bug with the 'ddns-updates' boolean server configuration |
342 | parameter, which caused the server to fail. | |
343 | ||
98bd7ca0 DH |
344 | Changes since 4.0.0-20070413 |
345 | ||
d9b43370 SK |
346 | - Old (expired) leases are now cleaned. |
347 | ||
8c1752d2 DH |
348 | - IPv6 subnets now have support for arbitrary allocation ranges via |
349 | a new 'range6' configuration directive. | |
350 | ||
98bd7ca0 DH |
351 | - An obviated option code hash lookup to find D6O_CLIENTID was removed. |
352 | ||
a512d11b DH |
353 | - Corrected some situations where variables might be used without being |
354 | initialized. | |
355 | ||
356 | - Silenced several other compiler warnings. | |
357 | ||
358 | - Include the more standard sys/uio.h rather than rely upon other | |
f66f02cc DH |
359 | header files to include it (fixes a BSD 4.2 compile failure). |
360 | ||
361 | - Duplicate dhclient-script updates for DHCPv6 to all provided scripts. | |
a512d11b | 362 | |
4ba58919 DH |
363 | - DHCPv4 I/O methods that failed to sense hardware address were corrected. |
364 | ||
365 | - DHCPv4 is now the default (as documented) rather than DHCPv6. The default | |
366 | was set to DHCPv6 to facilitate ease early development, and forgotten. | |
367 | ||
368 | - Corrected a segmentation violation in DHCPv4 socket processing. | |
369 | ||
8ea19a71 | 370 | - dhclient will now fork() into the background once it binds to an |
45d545f0 | 371 | IPv6 address, or immediately if the -n flag is supplied. |
8ea19a71 DH |
372 | |
373 | - -q is now the default behaviour on dhclient, with -d or -v enabling | |
374 | non-quiet (stderr logging) mode. | |
375 | ||
2cf8d0bd DH |
376 | - Fix documentation of the domain-search atom (quoted, with commas). |
377 | ||
378 | - Document DHCPv6 options presently in the default table. | |
379 | ||
fe5b0fdd DH |
380 | - Replaced ./configure shellscripting with GNU Autoconf. |
381 | ||
98bd7ca0 DH |
382 | Changes since 3.1.0 (NEW FEATURES) |
383 | ||
384 | - DHCPv6 Client and Server protocol support. Use '-6' to run the daemons | |
385 | as v6-only. Use '-4' to run the daemons as v4-only (default. There is | |
386 | no support currently for both. | |
387 | ||
388 | - Server support for multiple IA_NA options, containing at most one | |
389 | IAADDR option. | |
390 | ||
391 | - Client support for one IA_NA option, containing any number of IAADDR | |
392 | options. | |
393 | ||
394 | - Server support for the DHCPv6 Information-request message. | |
395 | ||
396 | - Inappropriate unicast DHCPv6 messages sent to the server are now | |
397 | discarded, and this has rearchitected the IO system slightly. | |
398 | ||
399 | - The DHCPv6 server DUID defaults to type 1, is persistently stored in | |
400 | the leases database, and can be over-ridden (either completely, or by | |
401 | specifying type 1 or type 2). | |
402 | ||
403 | - The server only uses Rapid-Commit if it has been configured with the | |
404 | Rapid-Commit option and the client requests it. | |
405 | ||
406 | - DDNS support. We now update AAAA records in the same place we would | |
407 | update A records, if we have an IPv6 address. We also generate IP6.ARPA | |
408 | style names for PTR records if we're dealing with an IPv6 address. Both | |
409 | A and AAAA updates are done using the same 'fqdn.' virtual option space | |
410 | (although the DHCPv4 FQDN and DHCPv6 FQDN options are formatted | |
411 | differently, they both use the same code here). | |
412 | ||
413 | - The Linux dhclient-script attempts to set and remove assigned addresses, | |
414 | and to configure /etc/resolv.conf from nameserver and domain name | |
415 | configurations. It can be extended to configure other parameters. | |
416 | ||
417 | - Initial DHCPv6 lease support. | |
418 | ||
419 | - The IO system now tracks all local IP addresses, so that the DHCP | |
420 | applications (particularly the dhcrelay) can discern between what frames | |
421 | were transmitted to it, and what frames are being carried through it which | |
422 | it should not intercept. | |
423 | ||
1418fd11 DH |
424 | Changes since 3.1.0 (Maintenance) |
425 | ||
426 | - A bug was repaired where MAC Address Affinity for virgin leases always | |
427 | mapped to the primary. Virgin leases now have an interleaved preference | |
428 | between primary and secondary. | |
429 | ||
430 | - A bug was repaired where MAC Address Affinity for clients with no client | |
431 | identifier was sometimes mishashed to the peer. Load balancing during | |
432 | runtime and pool rebalancing were opposing. | |
433 | ||
aa3e348e DH |
434 | - An assertion in lease counting relating to reserved leases was repaired. |
435 | ||
e9c59645 DH |
436 | - The subnet-mask option inclusion now conforms with RFC2132 section 3.3; |
437 | it will only appear prior to the routers option if it is present on the | |
438 | Parameter-Request-List. The subnet-mask option will also only be | |
439 | included by default (if it is not on the PRL) in response to DISCOVER | |
440 | or REQUEST messages. | |
441 | ||
442 | - The FQDN option is only supplied if the client supplied an FQDN option or | |
443 | if the FQDN option was explicitly requested on the PRL. | |
444 | ||
c104546d DH |
445 | - Dynamic BOOTP leases are now load balanced in failover. |
446 | ||
b9d0cc05 DH |
447 | Changes since 3.1.0rc1 |
448 | ||
449 | - The parse warning that 'deny dyanmic bootp;' must be configured for | |
450 | failover protected subnets was removed. | |
451 | ||
a512cc3a DH |
452 | Changes since 3.1.0b2 |
453 | ||
454 | - Failover rebalance events no longer play ping pong with round errors | |
455 | (moving leases between free and back to backup where there are an | |
456 | odd number of leases). | |
457 | ||
458 | - The 'pool' log line has been split into two messages, one before the | |
459 | rebalance run, and one after. | |
460 | ||
461 | - Any queued BNDACKs are transmitted before transmitting new BNDUPDs. | |
462 | This enforces the correct sequence of events for the remote server | |
463 | processing these messages. | |
464 | ||
fe5b0fdd | 465 | Changes since 3.1.0b1 |
27837f95 | 466 | |
74dc3e0b EH |
467 | - Fixed a bug that caused OMAPI clients to freeze when opening lease |
468 | objects. | |
469 | ||
1ba87b37 EH |
470 | - A new server config option "fqdn-reply" specifies whether the server |
471 | should send out option 81 (FQDN). Defaults to "on". If set to "off", | |
472 | the FQDN option is not sent, even if the client requested it. This is | |
473 | needed because some clients misbehave otherwise. Thanks to Christof Chen | |
474 | at Allianz. | |
475 | ||
a58da042 EH |
476 | - Allow trace output files (-tf option) to be overwritten, rather than |
477 | crashing dhcpd if the file already exists | |
478 | ||
61252edf EH |
479 | - A bug was fixed that caused dhcpd to segfault if a pool was declared |
480 | outside the scope of a subnet in dhcpd.conf. | |
481 | ||
27837f95 DH |
482 | - Some uninitialized values were repaired in dhcpleasequery.c that |
483 | caused the server to abort. | |
484 | ||
4d2eaafb DH |
485 | - A new server config option, 'do-reverse-updates', has been added |
486 | which causes the server to abstain from performing updates on PTR | |
487 | records. Thanks to a patch from Christof Chen at Allianz. | |
488 | ||
06211b40 DH |
489 | - A bug was repaired in subencapsulation support, where spaces separated |
490 | by empty spaces would not get included. | |
491 | ||
d6614ea2 DH |
492 | - A bug in dhclient was repaired which caused it to send parameter request |
493 | lists of 55 bytes in length no matter how long the declared PRL was. | |
494 | ||
132d38f2 DH |
495 | - 'dhcp.c(3953): non-null pointer' has been repaired. This fixes a flaw |
496 | wherein the DHCPv4 server may ignore a configured server-identifier. | |
497 | ||
fc3b9c90 DH |
498 | - A flaw in failover startup sequences was repaired that sometimes left |
499 | the primary DHCP server's pool rebalance schedules unscheduled. | |
500 | ||
c9feb859 DH |
501 | - Corrected a flaw that broke encapsulated spaces included due to presence |
502 | on the parameter request list. | |
503 | ||
c57db45c SK |
504 | Changes since 3.1.0a3 |
505 | ||
506 | - Some spelling fixes. | |
98311e4b | 507 | |
bd2bc2fa DH |
508 | Changes since 3.1.0a2 |
509 | ||
510 | - A bug was fixed where attempting to permit leasequeries results in a | |
511 | fatal internal error, "Unable to find server option 49". | |
512 | ||
85edef5c DH |
513 | - A bug was fixed in dhclient rendering the textual output form of the |
514 | domain-search option syntax. | |
515 | ||
bdddcb7d DH |
516 | Changes since 3.1.0a1 |
517 | ||
518 | - A bug in the FQDN universe that added FQDN codes to the NWIP universe's | |
519 | hash table was repaired. | |
520 | ||
616d67cb DH |
521 | - The servers now try harder to transmit pending binding updates when |
522 | entering normal state. | |
523 | ||
524 | - UPDREQ/UPDREQALL handling was optimized - it no longer dequeues and | |
525 | requeues all pending updates. This should reduce the number of spurious | |
66c8f734 DH |
526 | 'xid mismatch' log messages. |
527 | ||
528 | - An option definition referencing leak was fixed, which resulted in early | |
529 | termination of dhclient upon the renewal event. | |
616d67cb | 530 | |
6708d944 DH |
531 | - Some default hash table sizes were tweaked, some upwards, some downwards. |
532 | 3.1.0a1's tables resulted in a reduction in default server memory use. | |
533 | The new selected values provide more of a zero sum (increasing the size | |
534 | of tables likely to be populated, decreasing the size of tables unlikely). | |
535 | ||
45d545f0 | 536 | - Lease structures appear in three separate hashes: by IP address, by UID, |
6708d944 DH |
537 | and by hardware address. One type of table was used for all three, and |
538 | improvements to IP address hashing were applied to all three (so UID and | |
539 | hardware addresses were treated like 4-byte integers). There are now two | |
540 | types of tables, and the uid/hw hashes use functions more appropriate | |
541 | to their needs. | |
542 | ||
543 | - The max-lease-misbalance percentage no longer causes scheduled rebalance | |
544 | runs to be skipped: it still governs the schedule, but every scheduled | |
545 | run will attempt balance. | |
546 | ||
a7ee93fe DH |
547 | - A segfault bug in recursive encapsulation support has been corrected. |
548 | ||
98311e4b DH |
549 | Changes since 3.0 (New Features) |
550 | ||
551 | - A workaround for certain STSN servers that send a mangled domain-name | |
552 | option was introduced for dhclient. The client will now accept corrupted | |
553 | server responses, if they contain a valid DHCP_MESSAGE_TYPE (OFFER, ACK, | |
554 | or NAK). The server will continue to not accept corrupt client packets. | |
555 | ||
98bd7ca0 | 556 | - Support for 'reserved' (pseudo-static) and BOOTP leases via failover |
a55ccdd0 | 557 | was introduced. |
98311e4b DH |
558 | |
559 | - Support for adding, removing, and managing class and subclass statements | |
560 | via OMAPI. | |
561 | ||
a55ccdd0 DH |
562 | - The failover implementation was updated to comply with revision 12 of |
563 | the protocol draft. | |
564 | ||
98311e4b DH |
565 | - 'make install' now creates the initial zero-length dhcpd.leases file if |
566 | one does not already exist on the system. | |
567 | ||
b43c87ad | 568 | - RFC3942 compliance, site-local option spaces start at 224 now, not 128. |
b43c87ad | 569 | |
0b17f049 DH |
570 | - The Load Balance Algorithm was misimplemented. The current implementation |
571 | matches RFC 3074. | |
572 | ||
2727c1cf DH |
573 | - lcase() and ucase() configuration expressions have been added which adjust |
574 | their arguments from upper to lower and lower to upper cases respectively. | |
2714a8ef | 575 | Thanks to a patch from Albert Herranz. |
2727c1cf | 576 | |
febbd402 DH |
577 | - The dhclient 'reject ...;' statement, which rejects leases given by named |
578 | server-identifiers, now permits address ranges to be specified in CIDR | |
7d7073e7 | 579 | notation. Thanks to a patch from David Boyce. |
febbd402 | 580 | |
ee912528 DH |
581 | - The subnet-mask option is now supplied by default, but at lowest |
582 | priority. This helps a small minority of clients that provide parameter | |
583 | request lists, but do not list the subnet-mask option because they were | |
584 | designed to interoperate with a server that behaves in this manner. | |
585 | ||
586 | - The FQDN option is similarly supplied even if it does not appear on the | |
587 | parameter request list, but not to the exclusion of options that do | |
588 | appear at the parameter request list. Up until now it had ultimate | |
589 | priority over the client's parameter request list. | |
590 | ||
f7fdb216 | 591 | - Varying option space code and length bit widths (8/16/32) are now |
51202707 | 592 | supported. This is a milestone in achieving RFC 3925 "VIVSO" and |
f7fdb216 DH |
593 | DHCPv6 support. |
594 | ||
5e864416 DH |
595 | - A new common (server or client) option, 'db-time-format local;', has |
596 | been added which prints the local time in /var/db/dhcpd.leases rather | |
597 | than UTC. Thanks to a patch from Ken Lalonde. | |
598 | ||
b500bd4c DH |
599 | - Some patches to improve DHCP Server startup speed from Andrew Matheson |
600 | have been incorporated. | |
601 | ||
2426234f DH |
602 | - Failover pairs now implement 'MAC Affinity' on leases moving from the |
603 | active to free states. Leases that belonged to the failover secondary | |
604 | are moved to BACKUP state rather than FREE upon exiting EXPIRED state. | |
605 | If lease rebalancing must move leases, it tries first to move leases | |
606 | that belong to the peer in need. | |
607 | ||
608 | - The server no longer sends POOLREQ messages unless the pool is severely | |
609 | misbalanced in the peer's favor (see 'man dhcpd.conf' for more details). | |
610 | ||
611 | - Pool rebalance events no longer happen upon successfully allocating a | |
612 | lease. Instead, they happen on a schedule. See 'man dhcpd.conf' for the | |
613 | min-balance and max-balance statements for more information. | |
614 | ||
334bf491 DH |
615 | - The DHCP Relay Agent Information Option / Link Selection Sub-Option |
616 | is now supported. (See RFC3527 for details). | |
617 | ||
3004bebf DH |
618 | - A new DDNS related server option, update-conflict-detection, has been |
619 | added. If this option is enabled, dhcpd will perform normal DHCID | |
620 | conflict resolution (the default). If this option is disabled, it will | |
621 | instead trust the assigned name implicitly (removing any other bindings | |
622 | on that name). This option has not been made available in dhclient. | |
623 | ||
567e8561 DH |
624 | - In those cases where the DHCP software manufactures an IP header (to |
625 | transmit via bpf, lpf, etc), the IP TTL the software selects has been | |
626 | increased from 16 to 128. This is intended to match Microsoft Windows | |
627 | DHCP Client behaviour, to increase compatibility. | |
628 | ||
a396d25f DH |
629 | - 'ignore client-updates;' now has behaviour that is different from |
630 | 'deny client-updates;'. The client's request is not truly ignored, | |
631 | rather it is encouraged. Should this value be configured, the server | |
632 | updates DNS as though client-updates were set to 'deny'. That is, it | |
633 | enters into DNS whatever it is configured to do already, provided it is | |
634 | configured to. Then it sends a response to the client that lets the | |
635 | client believe it is performing client updates (which it will), probably | |
636 | for a different name. In essence, this lets the client do as it will, | |
637 | ignoring this aspect of their request. | |
638 | ||
dba5803b DH |
639 | - Support for compressed 'domain name list' style DHCP option contents, and |
640 | in particular the domain search option (#119) was added. | |
641 | ||
41e45067 | 642 | - The DHCP LEASEQUERY protocol as defined in RFC4388 is now implemented. |
6d103865 SK |
643 | LEASEQUERY lets you query the DHCP server for information about a lease, |
644 | using either an IP address, MAC address, or client identifier. Thanks | |
645 | to a patch from Justin Haddad. | |
646 | ||
41e45067 DH |
647 | - DHCPD is now RFC2131 section 4.1 compliant (broadcast to all-ones ip and |
648 | ethernet mac address) on the SCO platform specifically without any strange | |
649 | ifconfig hacks. Many thanks go to the Kroger Co. for donating the | |
650 | hardware and funding the development. | |
6d103865 | 651 | |
b543fea9 DH |
652 | - A new common configuration executable statement, execute(), has been |
653 | added. This permits dhcpd or dhclient to execute a named external | |
654 | program with command line arguments specified from other configuration | |
655 | language. Thanks to a patch written by Mattias Ronnblom, gotten to us | |
656 | via Robin Breathe. | |
657 | ||
b22de500 DH |
658 | - A new dhcp server option 'adaptive-lease-time-threshold' has been added |
659 | which causes the server to substantially reduce lease-times if there are | |
660 | few (configured percentage) remaining leases. Thanks to a patch submitted | |
661 | from Christof Chen. | |
662 | ||
96bbe8c5 SK |
663 | - Encapsulated option spaces within encapsulated option spaces is now |
664 | formally supported. | |
665 | ||
b8221d95 DH |
666 | Changes since 3.0.6rc1 |
667 | ||
668 | - supersede_lease() now requeues leases in their respective hardware | |
669 | address hash bucket. This mirrors client identifier behaviour. | |
670 | ||
c1e6c832 DH |
671 | Changes since 3.0.5 |
672 | ||
f546c28b DH |
673 | - Assorted fixes for broken network devices: Packet length is now |
674 | determined from the IP header length field to finally calculate the | |
675 | UDP payload length, because some NIC drivers return more data than | |
5a22eb63 | 676 | they actually received. |
f546c28b DH |
677 | |
678 | - UDP packets are now stored in aligned data structures. | |
679 | ||
c1e6c832 DH |
680 | - A logic error in omapi interface code was repaired that might result in |
681 | incorrectly indicating 'up' state when any flags were set, rather than | |
23e10d37 DH |
682 | specifically the INTERFACE_REQUESTED flag. Thanks to a patch from |
683 | Jochen Voss which got to us via Andrew Pollock at Debian. | |
c1e6c832 | 684 | |
75ab3070 DH |
685 | - A reference leak on binding scopes set by ddns updates was repaired. |
686 | ||
d69fb6a8 | 687 | - A memory leak in the minires_nsendsigned() function call was repaired. |
23e10d37 | 688 | Effectively, this leaked ~176 bytes per DDNS update. |
d69fb6a8 | 689 | |
02428754 DH |
690 | - In the case where an "L2" DHCP Relay Agent (one that does not set giaddr) |
691 | was directly attached to the same broadcast domain as the DHCP server, | |
692 | the RFC3046 relay agent information option was not being returned to the | |
693 | relay in the server's replies. This was fixed; the dhcp server no longer | |
694 | requires the giaddr to reply with relay agent information. Note that | |
695 | this also improves compatibility with L2 devices that "intercept" DHCP | |
696 | packets and expect relay agent information even in unicast (renewal) | |
23e10d37 DH |
697 | replies. Thanks to a patch from Pekka Silvonen. |
698 | ||
699 | - A bug was fixed where the BOOTP header 'sname' field had a value, the | |
700 | copy written to persistent storage was actually the contents of the | |
701 | 'file' field. | |
02428754 | 702 | |
ecde99a3 DH |
703 | - A bug was fixed where the nwip virtual option space was referencing |
704 | the fqdn option's virtual option space's option cache. | |
705 | ||
67674ffb DH |
706 | - Timestamp parsing errors that indicated missing "minutes" fields rather |
707 | than the actually missing "seconds" fields have been repaired thanks to | |
708 | a patch from Kevin Steves. | |
709 | ||
830ebc4c DH |
710 | - A grammar error in the dhclient.8 manpage was repaired thanks to a patch |
711 | from Chris Wagner. | |
712 | ||
c759db75 DH |
713 | - Several spelling typos were repaired, and some cross-references to other |
714 | relevant documents were included in the manpages, thanks to a patch | |
715 | by Andrew Pollock which got to us via Tomas Pospisek. | |
716 | ||
9aa3f3a5 DH |
717 | - Some bugs were fixed in the 'emergency relay agent options hologram' |
718 | which is used to retain relay agent option contents from when the | |
719 | client was in INIT or REBIND states. This should solve problems where | |
720 | relay agent options were not echoed from the server, even when giaddr | |
721 | was set. | |
722 | ||
3d0c598a DH |
723 | - dhclient now closes its descriptor to dhclient.leases prior to executing |
724 | dhclient-script. Thanks to a patch from Tomas Pospisek. | |
725 | ||
d5b6835f DH |
726 | - The server's "by client-id" and "by hardware address" hash table lists |
727 | are now sorted according to the preference to re-allocate that lease to | |
728 | returning clients. This should eliminate pool starvation problems | |
729 | arising when "INIT" clients were given new leases rather than presently | |
730 | active ones. | |
731 | ||
02428754 | 732 | Changes since 3.0.5rc1 |
0a73b7b6 | 733 | |
901306d5 | 734 | - A bug was repaired in fixes to the dhclient, which sought to run the |
0a73b7b6 SK |
735 | dhclient-script with the 'EXPIRE' state should it receive a NAK in |
736 | response to a REQUEST. The client now iterates the PREINIT state | |
737 | after the EXPIRE state, so that interfaces that might be configured | |
738 | 'down' can be brought back 'up' and initialized. | |
739 | ||
87a08ccc DH |
740 | - DHCPINFORM handling for clients that properly set ciaddr and come to the |
741 | server via a relay aget has been repaired. | |
742 | ||
6da113fb DH |
743 | Changes since 3.0.4 |
744 | ||
745 | - A warning that host statements declared within subnet or shared-network | |
746 | scopes are actually global has been added. | |
747 | ||
748 | - The default minimum lease time (if min-lease-time was not specified) | |
749 | was raised from 0 to 300. 0 is not thought to be sensible, and is | |
750 | known to be damaging. | |
751 | ||
752 | - Added additional fatal error sanity checks surrounding lease binding | |
753 | state count calculations (free/active counts used for failover pool | |
754 | balancing). | |
755 | ||
dcc557db DH |
756 | - Some time value size fixes in 3.0.4 brought on from FreeBSD /usr/ports were |
757 | misapplied to server values rather than client values. The server no longer | |
758 | advertises 8-byte lease-time options when on 64-bit platforms. | |
759 | ||
1b2ab55f DH |
760 | - A bug where leases not in ACTIVE state would get billed to billed classes |
761 | (classes with lease limitations) was fixed. Non-active leases OFFERed | |
762 | to clients are no longer billed (but billing is checked before offering). | |
763 | ||
e48891e8 DH |
764 | - The dhcpd.conf.5 manpage was updated in regard to the ddns-domainname |
765 | configuration option - the default configuration and results should be | |
766 | more clear now. | |
767 | ||
6cbc6629 DH |
768 | - If the dhclient were to receive a DHCPNAK while it was in the RENEW |
769 | state (and consequently, had an active, 'bound' address and related | |
770 | configuration options), it would fail to 'tear down' this information | |
771 | before proceeding into INIT state. dhclient now iterates the dhclient- | |
772 | script with the 'EXPIRE' action to cause these teardowns prior to entering | |
1d3bfb17 | 773 | INIT state. Thanks to a patch from Chris Zimmerman. |
6cbc6629 | 774 | |
c5fec5fa DH |
775 | - The omapi.1 manpage had some formatting errors repaired thanks to a patch |
776 | from Yoshihiko Sarumaru. | |
777 | ||
33e1cb2b DH |
778 | - A few lines of code that were failover-specific were moved within |
779 | #if defined() clauses so that compilation without failover could be | |
780 | made possible. | |
781 | ||
2bddf829 DH |
782 | - The log message emitted when the 'leased-address' value was not available |
783 | in dhcpd.conf "executable statements" has been updated to be more helpful. | |
784 | Manpage information for this value has also been updated. | |
785 | ||
87578987 DH |
786 | - Abandoned or dissociated (err condition) leases now remove any related |
787 | dynamic dns bindings. Thanks to a patch from Patrick Schoo. | |
788 | ||
e77c575f DH |
789 | - Attempting to write a new lease file to replace a corrupt (due to |
790 | encountering non-retryable errors during writing) lease file should | |
791 | no longer result in an infinite recursion. | |
792 | ||
2178df03 DH |
793 | - Host declaration hardware addresses and client identifiers may only be |
794 | configured once. dhcpd will now fail to load config files that specify | |
795 | multiple identifiers (previous versions would silently over-ride the | |
796 | value with the later configured value). | |
797 | ||
d5341d9b SK |
798 | - Several option codes that have been allocated since our last release |
799 | have been named and documented. | |
800 | ||
801 | - Option names of the form "unknown-123" have been removed from the in- | |
802 | memory hash tables. In order to support options of these names that | |
803 | may appear in dhclient.leases or similar in previous versions, the | |
804 | parser will now find the new option code definition, or mock up a | |
805 | generic option code definition. This should result in a smooth | |
806 | transition from one name to the other, as the new name is used to | |
807 | write new output. | |
808 | ||
6da113fb DH |
809 | Changes since 3.0.4rc1 |
810 | ||
811 | - The dhcp-options.5 manpage was updated to correct indentation errors | |
812 | thanks to a patch from Jean Delvare. | |
813 | ||
814 | Changes since 3.0.4b3 | |
815 | ||
816 | - Some manual pages were clarified pursuant to discussion on the dhcp-server | |
817 | mailing list. | |
818 | ||
88cd8aca DH |
819 | Changes since 3.0.4b2 |
820 | ||
45d545f0 | 821 | - Null-termination sensing for certain clients that unfortunately require |
88cd8aca DH |
822 | it in DHCPINFORM processing was repaired. |
823 | ||
824 | - The host-name option and a few others were moved from "X" format to "t" | |
825 | format to be compatible with new NULL handling functions. | |
826 | ||
827 | - DHCPINFORM processing is a little more careful about return addressing | |
828 | its responses, or if responding via a relay. The INFORM related | |
829 | messages also log the 'effective client ip address' rather than the | |
830 | client's supplied ciaddr (since some clients produce null ciaddrs). | |
831 | ||
832 | - The server was inappropriately sending leases to the RESET state in the | |
833 | event that multiple active leases were found to match a singly-identified | |
834 | client. This was changed to RELEASED (by accepting a different, ACTIVE | |
835 | binding, the client is implicitly releasing its lease). This repairs a | |
836 | bug wherein secondary servers in failover pairs detecting this condition | |
837 | move leases to RESET, and primaries refuse to accept that state | |
838 | transition (properly). | |
839 | ||
840 | - The memset-after-dmalloc() changes made in 3.0.4b1 have been backed out. | |
841 | ||
842 | Changes since 3.0.4b1 | |
843 | ||
844 | - Command line parsing in omshell was repaired - it no longer closes | |
845 | STDIN after reading one line. | |
846 | ||
847 | - The resolver library no longer closes the /etc/resolv.conf file | |
848 | descriptor it opened twice. | |
849 | ||
850 | - Changes to trailing NULL removal in 't' option-atoms has been rethought, | |
851 | it now includes 'd' (domain name) types, and tries hard not to rewind an | |
852 | option beyond the start of the text field it is un-terminating. | |
853 | ||
854 | Changes since 3.0.3 | |
855 | ||
856 | - A DDNS update handling function was misusing the DNS error codes, rather | |
857 | than the internal generic result enumeration. The result is a confusing | |
858 | syslog line, logging the wrong condition. | |
859 | ||
860 | - The DHCP Server was not checking pool balance in the case where it brought | |
861 | a non-ACTIVE lease out of storage for a client that was returning to use | |
862 | a lease it once had long ago, and had since expired. | |
863 | ||
864 | - Failover peers no longer bother to look for free leases to allocate when | |
865 | they already found the client's ACTIVE lease. DISCOVERs are load balanced | |
98bd7ca0 | 866 | whether freely-allocated or not, unless the server doubts the peer has |
88cd8aca DH |
867 | leases to allocate. |
868 | ||
869 | - Fixed a bug in dhcrelay agent addition code that suppressed trailing | |
45d545f0 | 870 | PAD options - it was suppressing only one trailing PAD option, rather |
88cd8aca DH |
871 | than the entire block of them. |
872 | ||
3a16098f DH |
873 | ! Fixed some unlikely overlapping-region memcpy() bugs in dhcrelay agent |
874 | option addition and stripping code. Added a few sanity checks. Although | |
875 | highly improbable, due to requiring the reception of a DHCP datagram well | |
876 | in excess of all known to be used physical MTU limitations, it is possible | |
877 | this may have been used in a stack overflow security vulnerability. Thanks | |
878 | to a patch from infamous42md. | |
879 | ||
880 | ! Added some sanity checks to OMAPI connection/authentication code. | |
881 | Although highly improbable, due to having to deliver in excess of 2^32 | |
882 | bytes of data via the OMAPI channel, not to mention requiring dhcpd to | |
883 | be able to malloc() a memory region 2^32 bytes in size, it was possible | |
884 | this might have resulted in a heap overflow security vulnerability. | |
885 | Thanks to a patch from infamous42md. | |
88cd8aca DH |
886 | |
887 | - dmalloc() memset()'s the non-debug (data) portion of the allocated | |
888 | memory to zero. Code that memset()'s the result returned by dmalloc() to | |
889 | zero is redundant. These redundancies were removed. | |
890 | ||
891 | - Some type declaration corrections to u_int16_t were made in common/tr.c | |
892 | (Token Ring support) thanks to a patch from Jason Vas Dias at RedHat. | |
893 | ||
894 | - A failover bug that was allowing leases that EXPIRED or were RELEASED | |
895 | where tsfp and tstp are identical timestamps to languish in these | |
896 | transitional states has been repaired. As a side effect, lease | |
897 | databases should be kept more consistent overall, not just for these | |
898 | transitional states. | |
899 | ||
900 | - If the lease db is deleted out from under the daemon, and it moves to rewrite | |
901 | the db, it will go ahead with the operation and move the new db into place | |
902 | once it detects the old db does not exist. | |
903 | ||
904 | - dhclient now ignores IRDA, SIT, and IEEE1394 network interfaces, as it | |
905 | is either nonsensical or (in the case of IEEE1394) is not known to support | |
906 | these interfaces. Thanks to Marius Gedminas and Andrew Pollock of Debian. | |
907 | ||
908 | - Some previously undocumented reasons for dhclient-script invoking has | |
45d545f0 | 909 | been documented in the dhclient-script.8 manpage. |
88cd8aca DH |
910 | |
911 | - Failover potential expiry calculations (TSTP) have been corrected. Results | |
912 | should be substantially more consistent, and proper given the constraints. | |
913 | ||
914 | - Adjusted lease state validation checks in potential-conflict, to | |
915 | account for possible clock skew similarly to normal state, and several | |
916 | previously illegal transitions were made legal (ex: active->released). | |
917 | ||
918 | - An impossible sanity check was removed from omapi/buffer.c, thanks to a | |
919 | patch from 'infamous42md'. | |
920 | ||
921 | - An OMAPI host/network byte order problem in lease time values has been | |
922 | repaired. | |
923 | ||
924 | - Several minor bugs, largely relating to treating 8-byte time values as | |
925 | 4-byte entities, have been repaired after careful review of the FreeBSD | |
926 | ports collection's patch set. Thanks to the nameless entities who have | |
927 | contributed to the FreeBSD ports. | |
928 | ||
929 | - When writing a trace file, the file is now created with permissions 0600, | |
930 | to help administrators avoid accidentally publicising sensitive config | |
931 | data. | |
932 | ||
933 | - The calculation of the maximum size of DHCP packets no longer includes | |
934 | Ethernet framing overhead. The result is that the 'Maximum Message | |
935 | Size' option advertised by clients, or the default value 576, is no | |
936 | longer reduced by 14 bytes, and instead directly reflects the IP level | |
937 | MTU (and the default, minimum allowed IP MTU of 576). | |
938 | ||
939 | - The special status of RELEASED/EXPIRED/RESET leases when a server | |
940 | is operating in partner-down was fixed. It no longer requires a | |
941 | lease be twice the MCLT beyond STOS to 'reallocate', and the expiry | |
942 | event to turn these into FREE leases without peer acknowledgement | |
943 | (after STOS+MCLT) has been repaired. | |
944 | ||
945 | - Compilation on older Solaris systems (lacking /usr/include/sys/int_types.h) | |
946 | has been repaired. | |
947 | ||
948 | - "append"ing a string onto the end of a "t" type option (such as the | |
949 | domain-name field) that had been improperly NULL-terminated by the | |
950 | DHCP server will no longer result in a truncated string containing | |
951 | only the option from the server, and not the expected appended value. | |
952 | Thanks to a patch from Jason Vas Dias at RedHat. | |
953 | ||
954 | - File handlers on configuration state (config files and lease dbs) should | |
98bd7ca0 | 955 | be treated consistently, regardless of whether TRACING is defined or not. |
88cd8aca | 956 | |
45d545f0 | 957 | - The Linux build environment has had some minor improvements - better |
88cd8aca DH |
958 | sensing of 64-bit pointer sizes (only used for establishing an icmp_id), |
959 | and corrections to #if operators regarding LINUX_MAJOR should it ever | |
960 | move to 3.[01].x. | |
961 | ||
962 | - The server now tries harder to survive the condition where it is unable | |
963 | to open a new lease file to rewrite the lease state database. | |
964 | ||
c75473d8 DH |
965 | Changes since 3.0.3b3 |
966 | ||
967 | - dhclient.conf documentation for interface {} was updated to reflect recent | |
968 | discussion on the dhcp-hackers mailing list. | |
969 | ||
970 | - In response to reports that the software does not compile on GCC 4.0.0, | |
971 | -Werror was removed from Makefile.conf for all platforms that used it. | |
972 | We will address the true problem in a future release; this is a temporary | |
973 | workaround. | |
974 | ||
975 | Changes since 3.0.3b2 | |
976 | ||
977 | - An error in code changes introduced in 3.0.3b2 was corrected, which caused | |
978 | static BOOTP clients to receive random addresses. | |
979 | ||
980 | Changes since 3.0.3b1 | |
981 | ||
982 | - A bug was fixed in BOOTPREQUEST handling code wherein stale references to | |
983 | host records would be left behind on leases that were not allocated to the | |
984 | client currently booting (eg in the case where the host was denied booting). | |
985 | ||
986 | - The dhcpd.conf.5 manpage was updated to be more clear in regards to | |
987 | multiple host declarations (thanks to Vincent McIntyre). 'Interim' style | |
988 | dynamic updates were also retouched. | |
989 | ||
98311e4b DH |
990 | Changes since 3.0.2 |
991 | ||
992 | - A bug was fixed where a server might load balance a DHCP REQUEST to its | |
45d545f0 | 993 | peer after already choosing not to load balance the preceding DISCOVER. |
98311e4b DH |
994 | The peer cannot allocate the originating server's lease. |
995 | ||
996 | - In the case where a secondary server lost its stable storage while the | |
997 | primary was still in communications-interrupted, and came back online, | |
998 | the lease databases would not be fully transferred to the secondary. | |
999 | This was due to the secondary errantly sending an extra UPDREQ message | |
1000 | when the primary made its state transition to PARTNER-DOWN known. | |
1001 | ||
1002 | - The package will now compile cleanly in gcc 3.3 and 3.4. As a side effect, | |
1003 | lease structures will be 9 bytes smaller on all platforms. Thanks to | |
1004 | Jason Vas Dias at Redhat. | |
1005 | ||
1006 | - Interface discovery code in DISCOVER_UNCONFIGURED mode is now | |
1007 | properly restricted to only detecting broadcast interfaces. Thanks | |
1008 | to a patch from Jason Vas Dias at RedHat. | |
1009 | ||
1010 | - decode_udp_ip_header was changed so that the IP address was copied out | |
1011 | to a variable, rather than referenced by a pointer. This enforces 4-byte | |
1012 | alignment of the 32-bit IP address value. Thanks to a patch from Dr. | |
1013 | Peter Poeml. | |
1014 | ||
1015 | - An incorrect log message was corrected thanks to a patch from | |
1016 | Dr. Peter Poeml. | |
1017 | ||
1018 | - A bug in DDNS was repaired, where if the server's first DDNS action was | |
1019 | a DDNS removal rather than a DDNS update, the resolver library's | |
1020 | retransmit timer and retry timer was set to the default, implying a | |
1021 | 15 second timeout interval. Which is a little excessive in a synchronous, | |
1022 | single-threaded system. In all cases, ISC DHCP should now hold fast to | |
1023 | a 1-second timeout, trying only once. | |
1024 | ||
1025 | - The siaddr field was being improperly set to the server-identifier when | |
1026 | responding to DHCP messages. RFC2131 clarified the siaddr field as | |
1027 | meaning the 'next server in the bootstrap process', eg a tftp server. | |
1028 | The siaddr field is now left zeroed unless next-server is configured. | |
1029 | ||
1030 | - mockup_lease() could have returned in an error condition (or in the | |
1031 | condition where no fixed-address was found matching the shared | |
1032 | network) with stale references to a host record. This is probably not | |
1033 | a memory leak since host records generally never die anyway. | |
1034 | ||
1035 | - A bug was repaired where failover servers would let stale client identifiers | |
1036 | persist on leases that were reallocated to new clients not sending an id. | |
1037 | ||
1038 | - Binding scopes ("set var = value;") are now removed from leases allocated | |
1039 | by failover peers if the lease had expired. This should help reduce the | |
1040 | number of stale binding scopes on leases. | |
1041 | ||
1042 | - A small memory leak was closed involving client identifiers larger than | |
1043 | 7 bytes, and failover. | |
1044 | ||
1045 | - Configuring a subnet in dhcpd.conf with a subnet mask of 32 bits might | |
1046 | cause an internal function to overflow heap. Thanks to Jason Vas Dias | |
1047 | at Redhat. | |
1048 | ||
1049 | - Some inconsistencies in treating numbers that the lexer parsed as 'NUMBER' | |
1050 | or 'NUMBER_OR_NAME' was repaired. Hexadecimal parsing is affected, and | |
1051 | should work better. | |
1052 | ||
1053 | - In several cases, parse warnings were being issued before the lexical | |
1054 | token had been advanced to the token whose value was causing an error... | |
1055 | causing parse warnings to claim the problem is on the wrong token. | |
1056 | ||
1057 | - Host declarations matching on client identifier for dynamic leases will | |
1058 | no longer match fixed-address host declarations (this is now identical | |
1059 | to behaviour for host records matching on hardware address). | |
1060 | ||
1061 | Changes since 3.0.2rc3 | |
1062 | ||
1063 | - A previously undocumented configuration directive, 'local-address', | |
1064 | was documented in the dhcpd.conf manpage. | |
1065 | ||
1066 | Changes since 3.0.2rc2 | |
1067 | ||
45d545f0 | 1068 | - Two variables introduced in 3.0.2b1 were used without being initialized |
98311e4b DH |
1069 | in the case where neither the FILE nor SNAME fields were available for |
1070 | overloading. This was repaired. | |
1071 | ||
1072 | - A heretofore believed to be impossible corner case of the option | |
1073 | overloading implementation turned out to be possible ("Unable to sort | |
1074 | overloaded options after 10 tries."). The implementation was reworked | |
1075 | to consider the case of an option so large it would require more than | |
1076 | three chunks to fit. | |
1077 | ||
1078 | - Many other instances of variables being used without being initialized | |
1079 | were repaired. | |
1080 | ||
1081 | - An uninitialized variable in omapi_io_destroy() led to the discovery | |
1082 | that this function may result in orphaned pointers (and hence, a memory | |
1083 | leak). | |
1084 | ||
1085 | Changes since 3.0.2rc1 | |
1086 | ||
1087 | - allocate_lease() was rewritten to repair a bug in which the server would | |
1088 | try to allocate an ABANDONED lease when FREE leases were available. | |
1089 | ||
1090 | Changes since 3.0.2b1 | |
1091 | ||
1092 | - Some dhcp-eval.5 manpage formatting was repaired. | |
1093 | ||
1094 | Changes since 3.0.1 | |
1095 | ||
1096 | - A bug was fixed in the server's 'option overloading' implementation, | |
1097 | where options loaded into the 'file' and 'sname' packet fields were | |
1098 | not aligned precisely as rfc2131 dictates. | |
1099 | ||
1100 | - The FreeBSD client script was changed to support the case where a domain | |
1101 | name was not provided by the server. | |
1102 | ||
1103 | - A memory leak in 'omshell' per each command line parsed was | |
1104 | repaired, thanks to a patch from Jarkko Torppa. | |
1105 | ||
1106 | - Log functions writing to stderr were adjusted to use the STDERR_FILENO | |
1107 | system definition rather than '2'. This is a no-op for 90% of platforms. | |
1108 | ||
1109 | - One call to trace_write_packet_iov() counted the number of io vectors | |
1110 | incorrectly, causing inconsistent tracefiles. This was fixed. | |
1111 | ||
1112 | - Some expression parse failure memory leaks were closed. | |
1113 | ||
1114 | - A host byte order problem in tracefiles was repaired. | |
1115 | ||
1116 | - Pools configured in DHCPD for failover possessing permission lists that | |
1117 | previously were assumed to not include dyanmic bootp clients are now | |
1118 | a little more pessimistic. The result is, dhcpd will nag you about just | |
1119 | about most pools that possess a 'allow' statement with no 'deny' that | |
1120 | would definitely match a dynamic bootp client. | |
1121 | ||
1122 | - The 'ddns-update-style' configuration warning bit now insists that | |
1123 | the configuration be globally scoped. | |
1124 | ||
1125 | - Two memory leaks in dhclient were closed thanks to a patch from Felix | |
1126 | Farkas. | |
1127 | ||
1128 | - Some minor but excellently pedantic documentation errors were fixed | |
1129 | thanks to a patch from Thomas Klausner. | |
1130 | ||
1131 | - Bugs in operator precedence in executable statements have been repaired | |
1132 | once again. More legal syntaxes should be parsed legally. | |
1133 | ||
1134 | - Failing to initialize a tracefile for any reason if a tracefile was | |
1135 | specified is now a fatal error. Thanks to a patch from Albert Herranz. | |
1136 | ||
1137 | - Corrected a bug in which the number of leases transferred as calculated | |
1138 | by the failover primary and sent to peers in POOLRESP responses may be | |
1139 | incorrect. This value is not believed to be used by other failover | |
1140 | implementations, excepting perhaps as logged information. | |
1141 | ||
1142 | - Corrected a bug in which 'dhcp_failover_send_poolresp()' was in fact | |
1143 | sending POOLREQ messages instead of POOLRESP mesasges. This message | |
1144 | was essentially ignored since failover secondaries effectively do not | |
1145 | respond to POOLREQ messages. | |
1146 | ||
1147 | - Type definitions for various bitwidths of integers in the sunos5-5 | |
1148 | build of ISC DHCP have been fixed. It should compile and run more | |
1149 | easily when built in 64-bit for this platform. | |
1150 | ||
1151 | - "allow known-clients;" is now a legal syntax, to avoid confusion. | |
1152 | ||
1153 | - If one dhcp server chooses to 'load balance' a request to its failover | |
1154 | peer, it first checks to see if it believes said peer has a free | |
1155 | lease to allocate before ignoring the DISCOVER. | |
1156 | ||
1157 | - log() was logging a work buffer, rather than the value returned by | |
1158 | executing the statements configured by the user. In some cases, | |
1159 | the work buffer and the intended results were the same. In some other | |
1160 | cases, they were not. This was fixed thanks to a patch from Gunnar | |
1161 | Fjone and directconnect.no. | |
1162 | ||
1163 | - Compiler warnings for some string type conversions was fixed, thanks | |
1164 | to Andreas Gustafsson. | |
1165 | ||
1166 | - The netbsd build environments were simplified to one, in which | |
1167 | -Wconversion is not used, thanks to Andreas Gustafsson. | |
1168 | ||
1169 | - How randomness in the backoff-cutoff dhclient configuration variable | |
1170 | is implemented was better documented in the manpage, and the behaviour | |
1171 | of dhclient in REQUEST timeout handling was changed to match that of | |
1172 | DISCOVER timeout handling. | |
1173 | ||
1174 | - Omapi was hardened against clients that pass in null values, thanks | |
1175 | to a patch from Mark Jason Dominus. | |
1176 | ||
1177 | - A bug was fixed in dhclient that kept it from doing client-side | |
1178 | ddns updates. Thanks to a patch from Andreas Gustafsson, which | |
1179 | underwent some modification after review by Jason Vas Dias. | |
1180 | ||
1181 | - Failover implementations disconnected due to the network between | |
1182 | them (rather than one of the two shutting down) will now try to | |
1183 | re-establish the failover connection every 5 seconds, rather than | |
1184 | to simply try once and give up until one of them is restarted. | |
1185 | Thanks to a patch from Ulf Ekberg from Infoblox, and field testing | |
1186 | by Greger V. Teigre which led to an enhancement to it. | |
1187 | ||
1188 | - A problem that kept DHCP Failover secondaries from tearing down | |
1189 | ddns records was repaired. Thanks to a patch from Ulf Ekberg from | |
1190 | Infoblox. | |
1191 | ||
1192 | - 64bit pointer sizes are detected properly on FreeBSD now. | |
1193 | ||
1194 | - A bug was repaired where the DHCP server would leave stale references | |
1195 | to host records on leases it once thought about offering to certain | |
1196 | clients. The result would be to apply host and 'known' scopes to the | |
1197 | wrong clients (possibly denying booting). NOTE: The 'mis-host' patch | |
1198 | that was being circulated as a workaround is not the way this bug was | |
1199 | fixed. If you were a victim of this bug in 3.0.1, you are cautioned | |
1200 | to proceed carefully and see if it fixes your problem. | |
1201 | ||
1202 | - A bug was repaired in the server's DHCPINFORM handling, where it | |
1203 | tried to divine the client's address from the source packet and | |
1204 | would get it wrong. Thanks to Anshuman Singh Rawat. | |
1205 | ||
1206 | - A log message was introduced to help illuminate the case where the | |
1207 | server was unable to find a lease to assign to any BOOTP client. | |
1208 | Thanks to Daniel Baker. | |
1209 | ||
1210 | - A minor dhcpd.conf.5 manpage error was fixed. | |
1211 | ||
1212 | Changes since 3.0.1rc14 | |
1213 | ||
1214 | - The global variable 'cur_time' was centralized and is now uniformly of a | |
1215 | type #defined in system-dependent headers. It had previously been defined | |
1216 | in one of many places as a 32-bit value, and this causes mayhem on 64-bit | |
1217 | big endian systems. It probably wasn't too healthy on little endian | |
1218 | systems either. | |
1219 | ||
1220 | - A printf format string error introduced in rc14 was repaired. | |
1221 | ||
1222 | - AIX system-dependent header file was altered to only define NO_SNPRINTF | |
1223 | if the condition used to #ifdef in vsnprintf in AIX' header files | |
1224 | is false. | |
1225 | ||
1226 | - The Alpha/OSF system-dependent header file was altered to define | |
1227 | NO_SNPRINTF on OS revisions older than 4.0G. | |
1228 | ||
1229 | - omapip/test.c had string.h added to its includes. | |
1230 | ||
1231 | Changes since 3.0.1rc13 | |
1232 | ||
1233 | ! CAN-2004-0460 - CERT VU#317350: Five stack overflow exploits were closed | |
1234 | in logging messages with excessively long hostnames provided by the | |
1235 | clients. It is highly probable that these could have been used by | |
1236 | attackers to gain arbitrary root access on systems using ISC DHCP 3.0.1 | |
1237 | release candidates 12 or 13. Special thanks to Gregory Duchemin for | |
1238 | both finding and solving the problem. | |
1239 | ||
1240 | ! CAN-2004-0461 - CERT VU#654390: Once the above was closed, an opening | |
45d545f0 | 1241 | in log_*() functions was evidenced, on some specific platforms where |
98311e4b DH |
1242 | vsnprintf() was not believed to be available and calls were wrapped to |
1243 | sprintf() instead. Again, credit goes to Gregory Duchemin for finding | |
1244 | the problem. Calls to snprintf() are now linked to a distribution-local | |
1245 | snprintf implementation, only in those cases where the architecture is | |
1246 | not known to provide one (see includes/cf/[arch].h). If you experience | |
1247 | linking problems with snprintf/vsnprintf or 'isc_print_' functions, this | |
1248 | is where to look. This vulnerability did not exist in any previously | |
1249 | published version of ISC DHCP. | |
1250 | ||
1251 | - Compilation on hpux 11.11 was repaired. | |
1252 | ||
1253 | - 'The cross-compile bug fix' was backed out. | |
1254 | ||
1255 | Changes since 3.0.1rc12 | |
1256 | ||
1257 | - Fixed a bug in omapi lease lookup function, to form the hardware | |
1258 | address for the hash lookup correctly, thanks to a patch from | |
1259 | Richard Hirst. | |
1260 | ||
1261 | - Fixed a bug where dhcrelay was sending relayed responses back to the | |
1262 | broadcast address, but with the source's unicast mac address. Should | |
1263 | now conform to rfc2131 section 4.1. | |
1264 | ||
1265 | - Cross-compile bug fix; use $(AR) instead of ar. Thanks to Morten Brorup. | |
1266 | ||
1267 | - Fixed a crash bug in dhclient where dhcpd servers that do not provide | |
1268 | renewal times results in an FPE. As a side effect, dhclient can now | |
1269 | properly handle 0xFFFFFFFF (-1) expiry times supplied by servers. Thanks | |
1270 | to a patch from Burt Silverman. | |
1271 | ||
1272 | - The 'ping timeout' debugs from rc12 were removed to -DDEBUG only, | |
45d545f0 | 1273 | and reformatted to correct a compilation error on Solaris platforms. |
98311e4b DH |
1274 | |
1275 | - A patch was applied which fixes a case where leases read from the | |
1276 | leases database do not properly over-ride previously read leases. | |
1277 | ||
1278 | - dhcpctl.3 manpage was tweaked. | |
1279 | ||
1280 | Changes since 3.0.1rc11 | |
1281 | ||
1282 | - A patch from Steve Campbell was applied with minor modifications to | |
1283 | permit reverse dns PTR record updates with values containing spaces. | |
1284 | ||
1285 | - A patch from Florian Lohoff was applied with some modifications to | |
1286 | dhcrelay. It now discards packets whose hop count exceeds 10 by default, | |
1287 | and a command-line option (-c) can be used to set this threshold. | |
1288 | ||
1289 | - A failover bug relating to identifying peers by name length instead of | |
1290 | by name was fixed. | |
1291 | ||
45d545f0 | 1292 | - Declaring failover configs within shared-network statements should no |
98311e4b DH |
1293 | longer result in error. |
1294 | ||
1295 | - The -nw command line option to dhclient now works. | |
1296 | ||
1297 | - Thanks to a patch from Michael Richardson: | |
1298 | - Some problems with long option processing have been fixed. | |
1299 | - Some fixes to minires so that updates of KEY records will work. | |
1300 | ||
1301 | - contrib/ms2isc was updated by Shu-Min Chang of the Intel Corporation. | |
1302 | see contrib/ms2isc/readme.txt for revision notes. | |
1303 | ||
1304 | - Dhclient no longer uses shell commands to kill another instance of | |
1305 | itself, it sends the signal directly. Thanks to a patch from Martin | |
1306 | Blapp. | |
1307 | ||
1308 | - The FreeBSD dhclient-script was changed so that a failure to write to | |
1309 | /etc/resolv.conf does not prematurely end the script. This keeps dhclient | |
1310 | from looping infinitely when this is the case. Thanks to a patch from | |
1311 | Martin Blapp. | |
1312 | ||
1313 | - A patch from Bill Stephens was applied which resolves a problem with lease | |
1314 | expiry times in failover configurations. | |
1315 | ||
1316 | - A memory leak in configuration parsing was closed thanks to a patch from | |
1317 | Steve G. | |
1318 | ||
1319 | - The function which discovers interfaces will now skip non-broadcast or | |
1320 | point-to-point interfaces, thanks to a patch from David Brownlee. | |
1321 | ||
1322 | - Options not yet known by the dhcpd or dhclient have had their names | |
1323 | changed such that they do not contain # symbols, in case they should ever | |
1324 | appear in a lease file. An option that might have been named "#144" is | |
1325 | now "unknown-144". | |
1326 | ||
1327 | - Another patch from Bill Stephens which allows the ping-check timeout to | |
1328 | be configured as 'ping-timeout'. Defaults to 1. | |
1329 | ||
1330 | Changes since 3.0.1rc10 | |
1331 | ||
1332 | - Potential buffer overflows in minires repaired. | |
1333 | ||
1334 | - A change to the linux client script to use /bin/bash, since /bin/sh may | |
1335 | not be bash. | |
1336 | ||
1337 | - Some missing va_end cleanups thanks to a patch from Thomas Klausner. | |
1338 | ||
1339 | - A correction of boolean parsing syntax validation - some illegal syntaxes | |
1340 | that worked before are now detected and produce errs, some legal syntaxes | |
1341 | that errored before will now work properly. | |
1342 | ||
1343 | - Some search-and-replace errors that caused some options to change their | |
1344 | names was repaired. | |
1345 | ||
1346 | - Shu-min Chang of the Intel corporation has contributed a perl script and | |
1347 | module that converts the MS NT4 DHCP configuration to a ISC DHCP3 | |
1348 | configuration file. | |
1349 | ||
1350 | - Applied the remainder of the dhcpctl memory leak patch provided by Bill | |
1351 | Squier at ReefEdge, Inc. (groo@reefedge.com). | |
1352 | ||
1353 | - Missing non-optional failover peer configurations will now result in a soft | |
1354 | error rather than a null dereference. | |
1355 | ||
1356 | Changes since 3.0.1rc9 | |
1357 | ||
1358 | - A format string was corrected to fix compiler warnings. | |
1359 | ||
1360 | - A number of spelling corrections were made in the man pages. | |
1361 | ||
1362 | - The dhclient.conf.5 man page was changed to refer to do-forward-updates | |
1363 | rather than a configuration option that doesn't exist. | |
1364 | ||
1365 | - A FreeBSD-specific bug in the interface removal handling was fixed. | |
1366 | ||
1367 | - A Linux-specific Token Ring detection problem was fixed. | |
1368 | ||
1369 | - Hashes removed from as-yet-unknown agent options, having those options | |
1370 | appear in reality before we know about them will no longer produce | |
1371 | self-corrupting lease databases. | |
1372 | ||
1373 | - dhclient will use the proper port numbers now when using the -g option. | |
1374 | ||
1375 | - A order-of-operations bug with 2 match clauses in 1 class statement is | |
1376 | fixed thanks to a patch from Andrew Matheson. | |
1377 | ||
1378 | - Compilation problems on Solaris were fixed. | |
1379 | ||
1380 | - Compilation problems when built with DEBUG or DEBUG_PACKET were repaired. | |
1381 | ||
1382 | - A fix to the dhcp ack process which makes certain group options will be | |
1383 | included in the first DHCPOFFER message was made thanks to a patch from | |
1384 | Ling Gou. | |
1385 | ||
1386 | - A few memory leaks were repaired thanks to patches from Bill Squier at | |
1387 | ReefEdge, Inc. (groo@reefedge.com). | |
1388 | ||
1389 | - A fix for shared-networks that sometimes give clients options for the | |
1390 | wrong subnets (in particular, 'option routers') was applied, thanks to | |
1391 | Ted Lemon for the patch. | |
1392 | ||
1393 | - Omshell's handling of dotted octets as values was changed such that dots | |
1394 | one after the other produce zero values in the integer string. | |
1395 | ||
1396 | Changes since 3.0.1rc8 | |
1397 | ||
1398 | - Fix a format string vulnerability in the server that could lead to a | |
1399 | remote root compromise (discovered by NGSEC Research Team, www.ngsec.com). | |
1400 | ||
1401 | - Add additional support for NetBSD/sparc64. | |
1402 | ||
1403 | - Fix a bug in the command-line parsing of the client. Also, resolve | |
1404 | a memory leak. | |
1405 | ||
1406 | - Add better support for shells other than bash in the Linux client | |
1407 | script. | |
1408 | ||
1409 | - Various build fixes for modern versions of FreeBSD and Linux. | |
1410 | ||
1411 | - Fix a bad bounds check when printing binding state names. | |
1412 | ||
1413 | - Clarify documentation about fixed-address and multiple addresses. | |
1414 | ||
1415 | - Fix a typo in the authoritative error message. | |
1416 | ||
1417 | - Make a log entry when we can't write a billing class. | |
1418 | ||
1419 | - Use conversion targets that are the right size on all architectures. | |
1420 | ||
1421 | - Increment the hop count when relaying. | |
1422 | ||
1423 | - Log a message when lease state is changed through OMAPI. | |
1424 | ||
1425 | - Don't rerun the shared_network when evaluating the pool. | |
1426 | ||
1427 | - Fix a reversed test in the parser. | |
1428 | ||
1429 | - Change the type of rbuf_max. | |
1430 | ||
1431 | - Make FTS_LAST a manifest constant to quiet warnings. | |
1432 | ||
1433 | Changes since 3.0.1rc7 | |
1434 | ||
1435 | - Fix two compiler warnings that are generated when compiling on Solaris | |
1436 | with gcc. These stop the build, even though they weren't actually | |
1437 | errors, because we prefer that our builds generate no warnings. | |
1438 | ||
1439 | Changes since 3.0.1rc6 | |
1440 | ||
1441 | - Don't allow a lease that's in the EXPIRED, RELEASED or RESET state | |
1442 | to be renewed. | |
1443 | ||
1444 | - Implement lease stealing for cases where the primary has fewer leases | |
1445 | than the secondary, as called for by the standard. | |
1446 | ||
1447 | - Add a fudge factor to the lease expiry acceptance code, (suggested | |
1448 | by Kevin Miller of CMU). | |
1449 | ||
1450 | - Fix a bug in permit_list_match that made it much too willing to say | |
1451 | that two permit lists matched. | |
1452 | ||
1453 | - Unless DEBUG_DNS_UPDATES is defined, print more user-friendly (and | |
1454 | also more compact) messages about DNS updates. | |
1455 | ||
1456 | - Fix a bug in generating wire-format domain names for the FQDN option. | |
1457 | ||
1458 | - Fix a bug where the FQDN option would not be returned if the client | |
1459 | requested it, contrary to the standard. | |
1460 | ||
1461 | - On Darwin, use the FreeBSD DHCP client script. | |
1462 | ||
1463 | - On NetBSD/sparc, don't check for casting warnings. | |
1464 | ||
1465 | - Add a flag in the DHCP client to disable updating the client's A | |
1466 | record when sending an FQDN option indicating that the client is | |
1467 | going to update its A record. | |
1468 | ||
1469 | - In the client, don't attempt a DNS update until one second after | |
1470 | configuring the new IP address, and if the update times out, keep | |
1471 | trying until a response, positive or negative, is received from the | |
1472 | DNS server. | |
1473 | ||
1474 | - Fix an uninitialized memory bug in the DHCP client. | |
1475 | ||
1476 | - Apply some FreeBSD-specific bug fixes suggested by Murray Stokely. | |
1477 | ||
1478 | - Fix a bug in ns_parserr(), where it was returning the wrong sort | |
1479 | of result code in some cases (suggested by Ben Harris of the | |
1480 | NetBSD project). | |
1481 | ||
1482 | - Fix a bug in is_identifier(), where it was checking against EOF | |
1483 | instead of the END_OF_FILE token (also suggested by Ben Harris). | |
1484 | ||
1485 | - Fix a bug where if an option universe contained no options, the | |
1486 | DHCP server could dump core (Walter Steiner). | |
1487 | ||
1488 | - Fix a bug in the handling of encapsulated options. | |
1489 | ||
1490 | - Fix a bug that prevented NWIP suboptions from being processed. | |
1491 | ||
1492 | - Delete the FTS_BOOTP and FTS_RESERVED states and implement them | |
1493 | as modifier flags to the FTS_ACTIVE state, as called for in the | |
1494 | failover protocol standard. | |
1495 | ||
1496 | - Fix bugs in the pool merging code that resulted in references and | |
1497 | dereferences of null pointers. This bug had no impact unless the | |
1498 | POINTER_DEBUG flag was defined. | |
1499 | ||
1500 | - In the server, added a do-forward-updates flag that can be used to | |
1501 | disable forward updates in all cases, so that sites that want the | |
1502 | clients to take sole responsibility for updating their A record can | |
1503 | do so. | |
1504 | ||
1505 | - Make it possible to disable optimization of PTR record updates. | |
1506 | ||
1507 | Changes since 3.0.1rc5 | |
1508 | ||
1509 | - Include some new documentation and changes provided by Karl Auer. | |
1510 | ||
1511 | - Add a workaround for some Lexmark printers that send a double-NUL- | |
1512 | terminated host-name option, which would break DNS updates. | |
1513 | ||
1514 | - Fix an off-by-one error in the MAC-address checking code for | |
1515 | DHCPRELEASE that was added in 3.0.1rc5. | |
1516 | ||
1517 | - Fix a bug where client-specific information was not being discarded | |
1518 | from the lease when it expired or was released, resulting in | |
1519 | problems if the lease was reallocated to a different client. | |
1520 | ||
1521 | - If more than one allocation pool is specified that has the same set | |
1522 | of constraints as another allocation pool on the same shared | |
1523 | network, merge the two pools. | |
1524 | ||
1525 | - Don't print an error in fallback_discard, since this just causes | |
1526 | confusion and does not appear to be helping to encourage anyone to | |
1527 | fix this bug. | |
1528 | ||
1529 | Changes since 3.0.1rc4 | |
1530 | ||
1531 | - Fix a bug that would cause the DHCP server to spin if asked to parse | |
1532 | a certain kind of incorrect statement. | |
1533 | ||
1534 | - Fix a related bug that would prevent an error from being reported in | |
1535 | the same case. | |
1536 | ||
1537 | - Additional documentation. | |
1538 | ||
1539 | - Make sure that the hardware address matches the lease when | |
1540 | processing a DHCPRELEASE message. | |
1541 | ||
1542 | Changes since 3.0.1rc3 | |
1543 | ||
1544 | - A minor bug fix in the arguments to a logging function call. | |
1545 | - Documentation update for dhcpd.conf. | |
1546 | ||
1547 | Changes since 3.0.1rc2 | |
1548 | ||
1549 | - Allow the primary to send a POOLREQ message. This isn't what the current | |
1550 | failover draft says to do, so we may have to back it out if I can't get the | |
1551 | authors to relent, but the scheme for balancing that's specified in the | |
1552 | current draft seems needlessly hairy, so I'm floating a trial balloon. | |
1553 | The rc1 code did not implement the method described in the draft either. | |
1554 | ||
1555 | Changes since 3.0.1rc1 | |
1556 | ||
1557 | - Treat NXDOMAIN and NXRRSET as success when we are trying to delete a | |
1558 | domain or RRSET. This allows the DHCP server to forget about a name | |
1559 | it added to the DNS once it's been removed, even if the DHCP server | |
1560 | wasn't the one that removed it. | |
1561 | ||
1562 | - Install defaults for failover maximum outstanding updates and maximum | |
1563 | silent time. This prevents problems that might occur if these values | |
1564 | were not configured. | |
1565 | ||
1566 | - Don't do DDNS deletes if ddns-update-style is none. | |
1567 | ||
1568 | - Return relay agent information options in DHCPNAK. This prevents DHCPNAK | |
1569 | messages from being dropped when the relay agent information option contains | |
1570 | routing information. | |
1571 | ||
1572 | - Fix a problem where coming up in recover wouldn't result in an update | |
1573 | request being sent. | |
1574 | ||
1575 | - Add some more chatty messages when we start a recovery update and when it's | |
1576 | done. | |
1577 | ||
1578 | - Fix a possible problem where some state might have been left around | |
1579 | after the peer lost contact and regained contact about how many updates | |
1580 | were pending. | |
1581 | ||
1582 | - Don't nix a lease update because of a lease conflict. This test has | |
1583 | never (as far as I know) prevented a mistake, and it appears to cause | |
1584 | problems with failover. | |
1585 | ||
1586 | - Add support in rc history code for keeping a selective history, rather | |
1587 | than a history of all references and dereferences. This code is only used | |
1588 | when extensive additional debugging is enabled. | |
1589 | ||
1590 | Changes since 3.0 | |
1591 | ||
1592 | - Make allocators for hash tables. As a side effect, this fixes a memory | |
1593 | smash in the subclass allocation code. | |
1594 | ||
1595 | - Fix a small bug in omshell where if you try to close an object when | |
1596 | no object is open, it dumps core. | |
1597 | ||
1598 | - Fix an obscure coredump that could occur on shutdown. | |
1599 | ||
1600 | - Fix a bug in the recording of host declaration rubouts in the lease file. | |
1601 | ||
1602 | - Fix two potential spins in the host deletion code. | |
1603 | ||
1604 | - Fix a core dump that would happen if an application tried to update | |
1605 | a host object attribute with a null value. | |
1606 | ||
1607 | Changes since 3.0 Release Candidate 12 | |
1608 | ||
1609 | - Fix a memory leak in the evaluation code. | |
1610 | ||
1611 | - Fix an obscure core dump. | |
1612 | ||
1613 | - Print a couple of new warnings when parsing the configuration file | |
1614 | when crucial information is left out. | |
1615 | ||
1616 | - Log "no free leases" as an error. | |
1617 | ||
1618 | - Documentation updates. | |
1619 | ||
1620 | Changes since 3.0 Release Candidate 11 | |
1621 | ||
1622 | - Always return a subnet selection option if one is sent. | |
1623 | ||
1624 | - Fix a warning that was being printed because an automatic data | |
1625 | structure wasn't zeroed. | |
1626 | ||
1627 | - Fix some failover state transitions that were being handled | |
1628 | incorrectly. | |
1629 | ||
1630 | - When supersede_lease is called on a lease whose end time has already | |
1631 | expired, but for which a state transition has not yet been done, do | |
1632 | a state transition. This fixes the case where if the secondary | |
1633 | allocated a lease to a client and the lease "expired" while the | |
1634 | secondary was in partner-down, no expiry event would actually | |
1635 | happen, so the lease would remain active until the primary was | |
1636 | restarted. | |
1637 | ||
1638 | Changes since 3.0 Release Candidate 10 | |
1639 | ||
1640 | - Fix a bug that was preventing released leases from changing state | |
1641 | in failover-enabled pools. | |
1642 | ||
1643 | - Fix a core dump in the client identifier finder code (for host | |
1644 | declarations). | |
1645 | ||
1646 | - Finish fixing a bug where bogus data would sometimes get logged to | |
1647 | the dhclient.leases file because it was opened as descriptor 2. | |
1648 | ||
1649 | - Fix the Linux dhclient-script according to suggestions made by | |
1650 | several people on the dhcp-client mailing list. | |
1651 | ||
1652 | - Log successful DNS updates at LOG_INFO, not LOG_ERROR. | |
1653 | ||
1654 | - Print an error message and refuse to run if a failover peer is | |
1655 | defined but not referenced by any pools. | |
1656 | ||
1657 | - Correct a confusing error message in failover. | |
1658 | ||
eaf0b302 TL |
1659 | Changes since 3.0 Release Candidate 9 |
1660 | ||
1661 | - Fix a bug in lease allocation for Dynamic BOOTP clients. | |
1662 | ||
0db87765 TL |
1663 | Changes since 3.0 Release Candidate 8 Patchlevel 2 |
1664 | ||
1665 | - Fix a bug that prevented update-static-leases from working. | |
1666 | ||
1667 | - Document failover-state OMAPI object. | |
1668 | ||
1669 | - Fix a compilation error on SunOS 4. | |
1670 | ||
d758ad8c TL |
1671 | Changes since 3.0 Release Candidate 8 Patchlevel 1 |
1672 | ||
1673 | - Fix a parsing bug that broke dns updates (both interim and ad-hoc). | |
1674 | This was introduced in rc8pl1 as an unintended result of the memory | |
1675 | leakage fixes that were in pl1. | |
1676 | ||
1677 | - Fix a long-standing bug where the server would record that an update | |
1678 | had been done for a client with no name, even though no update had | |
1679 | been done, and then when the client's lease expired the deletion of | |
1680 | that nonexistant record would time out because the name was the null | |
1681 | string. | |
1682 | ||
1683 | - Clean up the omshell, dhcpctl and omapi man pages a bit. | |
1684 | ||
d758ad8c TL |
1685 | Changes since 3.0 Release Candidate 8 |
1686 | ||
1687 | - Fix a bug that could cause the DHCP server to spin if | |
1688 | one-lease-per-client was enabled. | |
1689 | ||
1690 | - Fix a bug that was causing core dumps on BSD/os in the presence of | |
1691 | malformed packets. | |
1692 | ||
1693 | - In partner-down state, don't restrict lease lengths to MCLT. | |
1694 | ||
1695 | - On the failover secondary, record the MCLT received from the primary | |
1696 | so that if we come up without a connection to the primary we don't | |
1697 | wind up giving out zero-length leases. | |
1698 | ||
1699 | - Fix some compilation problems on BSD/os. | |
1700 | ||
1701 | - Fix a bunch of memory leaks. | |
1702 | ||
1703 | - Fix a couple of bugs in the option printer. | |
1704 | ||
1705 | - Fix an obscure error reporting bug in the dns update code, and also | |
1706 | make the message clearer when a key algorithm isn't supported. | |
1707 | ||
1708 | - Fix a bug in the tracing code that prevented trace runs that used | |
1709 | tcp connections from being played back. | |
1710 | ||
1711 | - Add some additional debugging capability for catching memory leaks | |
1712 | on exit. | |
1713 | ||
1714 | - Make the client release the lease correctly on shutdown. | |
1715 | ||
1716 | - Add some configurability to the build system. | |
1717 | ||
1718 | - Install omshell manual page in man1, not man8. | |
1719 | ||
1720 | - Craig Gwydir sent in a patch that fixes a long-standing bug in the | |
1721 | DHCP client that could cause core dumps, but that for some reason | |
1722 | hadn't been noticed until now. | |
1723 | ||
1724 | Changes since 3.0 Release Candidate 7 | |
1725 | ||
1726 | - Fix a bug in failover where we weren't sending updates after a | |
1727 | transition from communications-interrupted to normal. | |
1728 | ||
1729 | - Handle expired/released/reset -> free transition according to the | |
1730 | protocol specification (this works - the other way not only wasn't | |
1731 | conformant, but also didn't work). | |
1732 | ||
1733 | - Add a control object in both client and server that allows either | |
1734 | daemon to be shut down cleanly. | |
1735 | ||
1736 | - When writing a lease, if we run out of disk space, shut down the | |
1737 | output file and insist on writing a new one before proceeding. | |
1738 | ||
1739 | - In the server, if the OMAPI listener port is occupied, keep trying | |
1740 | to get it, rather than simply giving up and exiting. | |
1741 | ||
1742 | - Support fetching variables from leases and also updating and adding | |
1743 | variables to leases via OMAPI. | |
1744 | ||
1745 | - If two failover peers have wildly different clocks, refuse to start | |
1746 | doing failover. | |
1747 | ||
1748 | - Fix a bug in the DNS update code that could cause core dumps when | |
1749 | running on alpha processors. | |
1750 | ||
1751 | - Fixed a bug in ddns updates for static lease entries, thanks to a | |
1752 | patch from Andrey M Linkevitch. | |
1753 | ||
1754 | - Add support for Darwin/MacOS X | |
1755 | ||
1756 | - Install omshell (including new documentation). | |
1757 | ||
1758 | - Support DNS updates in the client (this is a very obscure feature | |
1759 | that most DHCP client users probably will not be able to use). | |
1760 | ||
1761 | - Somewhat cleaner status logging in the client. | |
1762 | ||
1763 | - Make OMAPI key naming syntax compatible with the way keys are | |
1764 | actually named (key names are domain names). | |
1765 | ||
1766 | - Fix a bug in the lease file writer. | |
1767 | ||
1768 | - Install DHCP ISC headers in a different place than BIND 9 ISC | |
1769 | headers, to avoid causing trouble in BIND 9 builds. | |
1770 | ||
1771 | - Don't send updates for attributes on an object when the attributes | |
1772 | haven't changed. Support deleting attributes on remote objects. | |
1773 | ||
1774 | - Fix a number of bugs in omshell, and add the unset and refresh | |
1775 | statements. | |
1776 | ||
1777 | - Handle disconnects in OMAPI a little bit more intelligently (so that | |
1778 | the caller gets ECONNRESET instead of EINVAL). | |
1779 | ||
1780 | - Fix a bunch of bugs in the handling of clients that have existing | |
1781 | leases when the try to renew their leases while failover is | |
1782 | operating. | |
1783 | ||
eaf0b302 TL |
1784 | Changes since 3.0 Release Candidate 6 |
1785 | ||
1786 | - Fix a core dump that could happen when processing a DHCPREQUEST from | |
1787 | a client that had a host declaration that contained both a | |
1788 | fixed-address declaration and a dhcp-client-identifier option | |
1789 | declaration, if the client identifier was longer than nine bytes. | |
1790 | ||
1791 | - Fix a memory leak that could happen in certain obscure cases when | |
1792 | using omapi to manipulate leases. | |
1793 | ||
1794 | - Fix some bugs and omissions in omshell. | |
1795 | ||
1796 | ||
1797 | Changes since 3.0 Release Candidate 5 | |
1798 | ||
1799 | - Fix a bug in omapi_object_dereference that prevented objects in | |
1800 | chains from having their reference counts decreased on dereference. | |
1801 | ||
1802 | - Fix a bug in omapi_object_dereference that would prevent object | |
1803 | chains from being freed upon removal of the last reference external | |
1804 | to the chain. | |
1805 | ||
1806 | - Fix a number of other memory leaks in the OMAPI protocol subsystem. | |
1807 | ||
1808 | - Add code in the OMAPI protocol handler to trace memory leakage. | |
1809 | ||
1810 | - Clean up the memory allocation/reference history printer. | |
1811 | ||
98311e4b | 1812 | - Support input of dotted quads and colon-separated hex lists as |
eaf0b302 TL |
1813 | attribute values in omshell. |
1814 | ||
98311e4b | 1815 | - Fix a typo in the Linux interface discovery code. |
eaf0b302 TL |
1816 | |
1817 | - Conditionalize a piece of trace code that wasn't conditional. | |
1818 | ||
1819 | Changes since 3.0 Release Candidate 4 | |
1820 | ||
1821 | - Fix a bug that would prevent leases from being abandoned properly on | |
1822 | DHCPDECLINE. | |
1823 | ||
1824 | - Fix failover peer OMAPI support. | |
1825 | ||
1826 | - In failover, correctly handle expiration of leases. Previously, | |
1827 | leases would never be reclaimed because they couldn't make the | |
1828 | transition from EXPIRED to FREE. | |
1829 | ||
1830 | - Fix some broken failover state transitions. | |
1831 | ||
1832 | - Documentation fixes. | |
1833 | ||
1834 | - Take out an unnecessary check in DHCP relay agent information option | |
1835 | stashing code that was preventing REBINDING clients from rebinding. | |
1836 | ||
1837 | - Prevent failover peers from allocating leases in DHCPREQUEST | |
1838 | processing if the lease belongs to the other server. | |
1839 | ||
1840 | - Record server version in lease file introductory comment. | |
1841 | ||
1842 | - Correctly report connection errors in OMAPI and failover. | |
1843 | ||
1844 | - Make authentication signature algorithm name comparisons in OMAPI | |
1845 | case-insensitive. | |
1846 | ||
1847 | - Fix compile problem on SunOS 4.x | |
1848 | ||
98311e4b | 1849 | - If a signature algorithm is not terminated with '.', terminate it so |
eaf0b302 TL |
1850 | that comparisons between fully-qualified names will work |
1851 | consistently. | |
1852 | ||
1853 | - Different SIOCGIFCONF probe code, may "fix" problem on some Linux | |
1854 | systems with the probe not working correctly. | |
1855 | ||
1856 | - Don't allow user to type omapi key on command line of omshell. | |
1857 | ||
0596b051 TL |
1858 | Changes since 3.0 Release Candidate 3 |
1859 | ||
1860 | - Do lease billing on startup in a way that I *think* will finally do | |
1861 | the billing correctly - the previous method could overbill as a | |
1862 | result of duplicate leases. | |
1863 | ||
1864 | - Document OMAPI server objects. | |
1865 | ||
892fe689 TL |
1866 | Changes since 3.0 Release Candidate 2 Patchlevel 1 |
1867 | ||
1868 | - Fix some problems in the DDNS update code. Thanks to Albert | |
1869 | Herranz for figuring out the main problem. | |
1870 | ||
1871 | - Fix some reference counting errors on host entries that were causing | |
1872 | core dumps. | |
1873 | ||
1874 | - Fix a byte-swap bug in the token ring code, thanks to Jochen | |
1875 | Friedrich. | |
1876 | ||
1877 | - Fix a bug in lease billing, thanks to Jonas Bulow. | |
1878 | ||
1879 | Changes since 3.0 Release Candidate 2 | |
1880 | ||
1881 | - Change the conditions under which a DHCPRELEASE is actually | |
1882 | committed to be consistent with lease binding states rather than | |
98311e4b | 1883 | using the lease end time. This may fix some problems with the |
892fe689 TL |
1884 | billing class code. |
1885 | ||
1886 | - Fix a bug where lease updates would fail on Digital Unix (and maybe | |
1887 | others) because malloc was called with a size of zero. | |
1888 | ||
1889 | - Fix a core dump that happens when the DHCP server can't create its | |
1890 | trace file. | |
1891 | ||
79ea3de8 | 1892 | Changes since 3.0 Release Candidate 1 Patchlevel 1 |
87784777 | 1893 | |
79ea3de8 TL |
1894 | - Fix the dhcp_failover_put_message to not attempt to allocate a |
1895 | zero-length buffer. Some versions of malloc() fail if you try to | |
1896 | allocate a zero-length buffer, and this was causing problems on, | |
1897 | e.g., Digital Unix. | |
1898 | ||
1899 | - Fix a case where the failover code was printing an error message | |
1900 | when no error had occurred. | |
1901 | ||
1902 | - Fix a problem where when a server went down and back up again, the | |
1903 | peer would not see a state transition and so would stay in the | |
1904 | non-communicating state. | |
1905 | ||
1906 | - Be smart about going into recover_wait. | |
1907 | ||
1908 | - Fix a problem in the failover implementation where peers would fail | |
1909 | to come into sync if interrupted in the RECOVER state. This could | |
1910 | have been the cause of some problems people have reported recently. | |
1911 | ||
1912 | - Fix a problem with billing classes where they would not be unbilled | |
1913 | when the client lease expired. | |
1914 | ||
1915 | - If select fails, figure out which descriptor is bad, and cut it out | |
1916 | of the I/O loop. This prevents a potentially nasty spin. I | |
1917 | haven't heard any report it in a while, but it came up consistently | |
1918 | in testing. | |
1919 | ||
1920 | - Fix a bug in the relay agent where if you specified interfaces on | |
1921 | the command line, it would fail. | |
1922 | ||
1923 | - Fix a couple of small bugs in the omapi connection object (no known | |
1924 | user impact). | |
1925 | ||
1926 | - Add the missing 3.0 Beta 1 lease conversion script. | |
1927 | ||
1928 | - Read dhcp client script hooks if they exist, rather than only if | |
1929 | they're executable. | |
1930 | ||
1931 | Changes since 3.0 Release Candidate 1 | |
87784777 TL |
1932 | |
1933 | - Fix a memory smash that happens when fixed-address leases are used. | |
1934 | ANY SITE AT WHICH FIXED-ADDRESS STATEMENTS ARE BEING USED SHOULD | |
1935 | UPGRADE IMMEDIATELY. This has been a long-standing bug - thanks to | |
1936 | Alvise Nobile for discovering it and helping me to find it! | |
1937 | ||
79ea3de8 TL |
1938 | - Fix a small bug in binary-to-ascii, thanks to H. Peter Anvin of |
1939 | Transmeta. | |
1940 | ||
87784777 TL |
1941 | - There is a known problem with the DHCP server doing failover on |
1942 | Compaq Alpha systems. This patchlevel is not a release candidate | |
1943 | because of this bug. The bug should be straightforward to fix, so | |
1944 | a new release candidate is expected shortly. | |
1945 | ||
1946 | - There is a known problem in the DDNS update code that is probably a | |
1947 | bug, and is not, as far as we know, fixed in this patchlevel. | |
1948 | ||
6d779c72 TL |
1949 | Changes since 3.0 Beta 2 Patchlevel 24 |
1950 | ||
1951 | - Went over problematic failover state transitions and made them all | |
1952 | work, so that failover should now much less fragile. | |
1953 | ||
1954 | - Add some dhcpctl and omapi documentation | |
1955 | ||
1956 | - Fix compile errors when compiling with unusual predefines. | |
1957 | ||
1958 | - Make Token Ring work on Linux 2.4 | |
1959 | ||
1960 | - Fix the Digital Unix BPF_WORDALIGN bug. | |
1961 | ||
1962 | - Fix some dhcp client documentation errors. | |
1963 | ||
1964 | - Update some parts of the README file. | |
1965 | ||
1966 | - Support GCC on SCO. | |
1967 | ||
de57e64b TL |
1968 | Changes since 3.0 Beta 2 Patchlevel 23 |
1969 | ||
1970 | - Fix a bug in the DNS update code where a status code was not being | |
1971 | checked. This may have been causing core dumps. | |
1972 | ||
1973 | - When parsing the lease file, if a lease declaration includes a | |
1974 | billing class statement, and the lease already has a billing class, | |
1975 | unbill the old class. | |
1976 | ||
1977 | - When processing failover transactions, where acks will be deferred, | |
1978 | process the state transition immediately. | |
1979 | ||
1980 | - Don't try to use the new SIOCGIFCONF buffer size detection code on | |
1981 | Linux 2.0, which doesn't provide this functionality. | |
1982 | ||
1983 | - Apply a patch suggested by Tuan Uong for a problem in dlpi.c. | |
1984 | ||
1985 | - Fix a problem in using the which command in the configure script. | |
1986 | ||
1987 | - Fix a parse error in the client when setting up an omapi listener. | |
1988 | ||
1989 | - Document the -n and -g flags to the client. | |
1990 | ||
1991 | - Make sure there is always a stdin and stdout on startup. This | |
1992 | prevents shell scripts from accidentally writing error messages into | |
1993 | configuration files that happen to be opened as stderr. | |
1994 | ||
1995 | - If an interface is removed, the client will now notice that it is | |
1996 | gone rather than spinning. This has only been tested on NetBSD. | |
1997 | ||
1998 | - The client will attempt to get an address even if it can't create a | |
1999 | lease file. | |
2000 | ||
2001 | - Don't overwrite tracefiles. | |
2002 | ||
2003 | - Fix some memory allocation bugs in failover. | |
2aa36519 | 2004 | |
140158d3 TL |
2005 | Changes since 3.0 Beta 2 Patchlevel 22 |
2006 | ||
2007 | - Apply some patches suggested by Cyrille Lefevre, who is maintaining | |
2008 | the FreeBSD ISC DHCP Distribution port. | |
2009 | ||
2010 | - Fix a core dump in DHCPRELEASE. | |
2011 | ||
3a395e60 TL |
2012 | Changes since 3.0 Beta 2 Patchlevel 21 |
2013 | ||
2014 | - This time for sure: fix the spin described in the changes for pl20. | |
2015 | ||
fc74dd0c TL |
2016 | Changes since 3.0 Beta 2 Patchlevel 20 |
2017 | ||
2018 | - Fix a problem with Linux detecting large numbers of interfaces (Ben) | |
2019 | ||
2020 | - Fix a memory smash in the quotify code, which was introduced in | |
2021 | pl19. | |
2022 | ||
2023 | - Actually fix the spin described in the changes for pl20. The | |
2024 | previous fix only partially fixed the problem - enough to get it | |
2025 | past the regression test. | |
2026 | ||
ed5ee591 TL |
2027 | Changes since 3.0 Beta 2 Patchlevel 19 |
2028 | ||
2029 | - Fix a bug that could cause the server to abort if compiled with | |
2030 | POINTER_DEBUG enabled. | |
2031 | ||
2032 | - Fix a bug that could cause the server to spin when responding to a | |
2033 | DHCPREQUEST. | |
2034 | ||
2035 | - Apply Joost Mulders' suggested patches for DLPI on x86. | |
2036 | ||
2037 | - Support NUL characters in quoted strings. | |
2038 | ||
2039 | - Install unformatted man pages on SunOS. | |
2040 | ||
b3fad8ac TL |
2041 | Changes since 3.0 Beta 2 Patchlevel 18 |
2042 | ||
3350f5b7 TL |
2043 | - Allow the server to be placed in partner-down state using OMAPI. |
2044 | (Damien Neil) | |
2045 | ||
2046 | - Implement omshell, which can be used to do arbitrary things to the | |
2047 | server (in theory). (Damien Neil) | |
2048 | ||
2049 | - Fix a case where if a client had two different leases the server could | |
2050 | actually dereference the second one when it hadn't been referenced, | |
2051 | leading to memory corruption and a core dump. (James Brister) | |
2052 | ||
2053 | - Fix a case where a client could request the address of another client's | |
2054 | lease, but find_lease wouldn't detect that the other client had it, and | |
2055 | would attempt to allocate it to the client, resulting in a lease conflict | |
2056 | message. | |
2057 | ||
2058 | - Fix a case where a client with more than one client identifier could be | |
2059 | given a lease where the hardware address was correct but the client | |
2060 | identifier was not, resulting in a lease conflict message. | |
2061 | ||
98311e4b | 2062 | - Fix a problem where the server could write out a colon-separated |
3350f5b7 TL |
2063 | hex list as a value for a variable, which would then not parse. |
2064 | The fix is to always write strings as quoted strings, with any | |
2065 | non-printable characters quoted as octal escape sequences. So | |
2066 | a file written the old way still won't work, but new files written | |
2067 | this way will work. | |
2068 | ||
b3fad8ac TL |
2069 | - Fix documentation for sending non-standard options. |
2070 | ||
2071 | - Use unparsable names for unknown options. WARNING: this will | |
2072 | break any configuration files that use the option-nnn convention. | |
2073 | If you want to continue to use this convention for some options, | |
2074 | please be sure to write a definition, like this: | |
2075 | ||
2076 | option option-nnn code nnn = string; | |
2077 | ||
2078 | You can use a descriptive name instead of option-nnn if you like. | |
2079 | ||
2080 | - Fix a problem where we would see a DHCPDISCOVER/DHCPOFFER/ | |
2081 | DHCPREQUEST/DHCPACK/DHCPREQUEST/DHCPNAK sequence. This was the | |
2082 | result of a deceptively silly bug in supersede_lease. | |
2083 | ||
2084 | - Fix client script exit status check, according to a fix supplied by | |
2085 | Hermann Lauer. | |
2086 | ||
2087 | - Fix an endianness bug in the tracefile support, regarding ICMP | |
2088 | messages. | |
2089 | ||
3350f5b7 TL |
2090 | - Fix a bug in the client where the medium would not work correctly if |
2091 | it contained quoted strings. | |
2092 | ||
b3fad8ac TL |
2093 | ** there was no pl17 ** |
2094 | ||
e6d30fd6 TL |
2095 | Changes since 3.0 Beta 2 Patchlevel 16 |
2096 | ||
6da9db9d TL |
2097 | - Add support for transaction tracing. This allows the state of the |
2098 | DHCP server on startup, and all the subsequent transactions, to be | |
2099 | recorded in a file which can then be played back to reproduce the | |
2100 | behaviour of the DHCP server. This can be used to quickly | |
2101 | reproduce bugs that cause core dumps or corruption, and also for | |
2102 | tracking down memory leaks. | |
2103 | ||
2104 | - Incorporate some bug fixes provided by Joost Mulders for the DLPI | |
2105 | package which should clear up problems people have been seeing on | |
2106 | Solaris. | |
2107 | ||
2108 | - Fix bugs in the handling of options stored as linked lists (agent | |
2109 | options, fqdn options and nwip options) that could cause memory | |
2110 | corruption and core dumps. | |
2111 | ||
2112 | - Fix a bug in DHCPREQUEST handling that resulted in DHCPNAK messages | |
2113 | not being send in some cases when they were needed. | |
2114 | ||
2115 | - Make the lease structure somewhat more compact. | |
2116 | ||
2117 | - Make initial failover startup *much* faster. This was researched | |
2118 | and implemented by Damien Neil. | |
2119 | ||
2120 | - Add a --version flag to all executables, which prints the program | |
2121 | name and version to standard output. | |
2122 | ||
2123 | - Don't rewrite the lease file every thousand leases. | |
2124 | ||
e6d30fd6 TL |
2125 | - A bug in nit.c for older SunOS machines was fixed by a patch sent in |
2126 | by Takeshi Hagiwara. | |
2127 | ||
6da9db9d TL |
2128 | - Fix a memory corruption bug in the DHCP client. |
2129 | ||
2130 | - Lots of documentation updates. | |
2131 | ||
2132 | - Add a feature allowing environment variables to be passed to the | |
2133 | DHCP client script on the DHCP client command line. | |
2134 | ||
2135 | - Fix client medium support, which had been broken for some time. | |
2136 | ||
2137 | - Fix a bug in the DHCP client initial startup backoff interval, which | |
2138 | would cause two DHCPDISCOVERS to be sent back-to-back on startup. | |
2139 | ||
2140 | ||
af49fdff TL |
2141 | Changes since 3.0 Beta 2 Patchlevel 15 |
2142 | ||
2143 | - Some documentation tweaks. | |
2144 | ||
2145 | - Maybe fix a problem in the DLPI code. | |
2146 | ||
2147 | - Fix some error code space inconsistencies in ddns update code. | |
2148 | ||
2149 | - Support relay agents that intercept unicast DHCP messages to stuff | |
2150 | agent options into them. | |
2151 | ||
2152 | - Fix a small memory leak in the relay agent option support code. | |
2153 | ||
c5b569f8 TL |
2154 | - Fix a core dump that would occur if a packet was sent with no |
2155 | options. | |
2156 | ||
754ae3e9 TL |
2157 | Changes since 3.0 Beta 2 Patchlevel 14 |
2158 | ||
2159 | - Finish fixing a long-standing bug in the agent options code. This | |
2160 | was causing core dumps and failing to operate correctly - in | |
2161 | particular, agent option stashing wasn't working. Agent option | |
2162 | stashing should now be working, meaning that agent options can be | |
2163 | used in class statements to control address allocation. | |
2164 | ||
2165 | - Fix up documentation. | |
2166 | ||
2167 | - Fix a couple of small memory leaks that would have added up | |
2168 | significantly in a high-demand situation. | |
2169 | ||
2170 | - Add a log-facility configuration parameter. | |
2171 | ||
2172 | - Fix a compile error on some older operating systems. | |
2173 | ||
2174 | - Add the ability in the client to execute certain statements before | |
2175 | transmitting packets to the server. Handy for debugging; not much | |
2176 | practical use otherwise. | |
2177 | ||
2178 | - Don't send faked-out giaddr when renewing or bound - again, useful | |
2179 | for debugging. | |
2180 | ||
2f2e7960 TL |
2181 | Changes since 3.0 Beta 2 Patchlevel 13 |
2182 | ||
2183 | - Fixed a problem where the fqdn decoder would sometimes try to store | |
2184 | an option with an (unsigned) negative length, resulting in a core | |
2185 | dump on some systems. | |
2186 | ||
2187 | - Work around the Win98 DHCP client, which NUL-terminates the FQDN | |
2188 | option. | |
2189 | ||
2190 | - Work around Win98 and Win2k clients that will claim they want to do | |
2191 | the update even when they don't have any way to do it. | |
2192 | ||
2193 | - Fix some log messages that can be printed when failover is operating | |
2194 | that were not printing enough information. | |
2195 | ||
2196 | - It was possible for a DHCPDISCOVER to get an allocation even when | |
2197 | the state machine said the server shouldn't be responding. | |
2198 | ||
2199 | - Don't load balance DHCPREQUESTs from clients in RENEWING and | |
2200 | REBINDING, since in RENEWING, if we heard it, it's for us, and in | |
2201 | REBINDING, the client wouldn't have got to REBINDING if its primary | |
2202 | were answering. | |
2203 | ||
2204 | - When we get a bogus state lease binding state transition, don't do | |
2205 | the transition. | |
2206 | ||
2207 | ||
66e98927 TL |
2208 | Changes since 3.0 Beta 2 Patchlevel 12 |
2209 | ||
2210 | - Fixed a couple of silly compile errors. | |
2211 | ||
a1e2e3d6 TL |
2212 | Changes since 3.0 Beta 2 Patchlevel 11 |
2213 | ||
2214 | - Albert Herranz tracked down and fixed a subtle bug in the base64 | |
2215 | decoder that would prevent any key with an 'x' in its base64 | |
2216 | representation from working correctly. | |
2217 | ||
2218 | - Thanks to Chris Cheney and Michael Sanders, we have a fix for the | |
2219 | hang that they both spotted in the DHCP server - when | |
2220 | one-lease-per-client was set, the code to release the "other" lease | |
2221 | could spin. | |
2222 | ||
2223 | - Fix a problem with alignment of the input buffer in bpf in cases | |
2224 | where two packets arrive in the same bpf read. | |
2225 | ||
2226 | - Fix a problem where the relay agent would crash if you specified an | |
2227 | interface name on the command line. | |
2228 | ||
2229 | - Add the ability to conditionalize client behaviour based on the | |
2230 | client state. | |
2231 | ||
2232 | - Add support for the FQDN option, and added support for a new way of | |
2233 | doing ddns updates (ddns update style interim) that allows more than | |
2234 | one DHCP server to update the DNS for the same network(s). This | |
2235 | was implemented by Damien Neil with some additional functionality | |
2236 | added by Ted Lemon. | |
2237 | ||
2238 | - Damien added a "log" statement, so that the configuration file can | |
2239 | be made to log debugging information and other information. | |
2240 | ||
2241 | - Fixed a bug that caused option buffers not to be terminated with an | |
2242 | end option. | |
2243 | ||
2244 | - Fixed a long-standing bug in the support for option spaces where the | |
2245 | options are stored as an ordered list rather than in a hash table, | |
2246 | which could theoretically result in memory pool corruption. | |
2247 | ||
2248 | - Prevent hardware declarations with no actual hardware address from | |
2249 | being written as something unparsable, and behave correctly in the | |
2250 | face of a null hardware address on input. | |
2251 | ||
2252 | - Allow key names to be FQDNs, and qualify the algorithm name if it is | |
2253 | specified unqualified. | |
2254 | ||
2255 | - Modify the DDNS update code so that it never prints the "resolver | |
2256 | failed" message, but instead says *why* the resolver failed. | |
2257 | ||
2258 | - Officially support the subnet selection option, which now has an | |
2259 | RFC. | |
2260 | ||
2261 | - Fix a build bug on MacOS X. | |
2262 | ||
2263 | - Allow administrator to disable ping checking. | |
2264 | ||
2265 | - Clean up dhcpd.conf documentation and add more information about how | |
2266 | it works. | |
2267 | ||
6c68ec36 TL |
2268 | Changes since 3.0 Beta 2 Patchlevel 10 |
2269 | ||
2270 | - Fix a bug introduced during debugging (!) and accidentally committed | |
2271 | to CVS. | |
2272 | ||
9fd337e7 TL |
2273 | Changes since 3.0 Beta 2 Patchlevel 9 |
2274 | ||
2275 | - Fix DHCP client handling of vendor encapsulated options. | |
2276 | ||
2277 | - Fix a bug in the handling of relay agent information options introduced | |
2278 | in patchlevel 9. | |
2279 | ||
2280 | - Stash agent options on client leases by default, and use the stashed | |
2281 | options at renewal time. | |
2282 | ||
2283 | - Add the ability to test the client's binding state in the client | |
2284 | configuration language. | |
2285 | ||
2286 | - Fix a core dump in the DNS update code. | |
2287 | ||
2288 | - Fix some expression evaluation bugs that were causing updates to be | |
2289 | done when no client hostname was received. | |
2290 | ||
2291 | - Fix expression evaluation debugging printfs. | |
2292 | ||
2293 | - Teach pretty_print_option to print options in option spaces other than | |
2294 | the DHCP option space. | |
2295 | ||
2296 | - Add a warning message if the RHS of a not is not boolean. | |
2297 | ||
2298 | - Never select for more than a day, because some implementations of | |
2299 | select will just fail if the timeout is too long (!). | |
2300 | ||
2301 | - Fix a case where a DHCPDISCOVER from an unknown network would be | |
2302 | silently dropped. | |
2303 | ||
2304 | - Fix a bug where if a client requested an IP address for which a different | |
2305 | client had the lease, the DHCP server would reallocate it anyway. | |
2306 | ||
2307 | - Fix the DNS update code so that if the client changes its name, the DNS | |
2308 | will be correctly updated. | |
2309 | ||
3922772a TL |
2310 | Changes since 3.0 Beta 2 Patchlevel 8 |
2311 | ||
2312 | - Oops, there was another subtle math error in the header-length | |
2313 | bounds-checking. | |
2314 | ||
2315 | Changes since 3.0 Beta 2 Patchlevel 7 | |
848c2547 TL |
2316 | |
2317 | - Oops, forgot to byte-swap udp header length before bounds-checking it. | |
2318 | ||
3922772a | 2319 | Changes since 3.0 Beta 2 Patchlevel 6 |
0f6045f8 | 2320 | |
f8572308 TL |
2321 | - Fix a possible DoS attack where a client could cause the checksummer |
2322 | to dump core. This was a read, not a write, so it shouldn't be | |
2323 | possible to exploit it any further than that. | |
2324 | ||
2325 | - Implement client- and server-side support for using the Client FQDN | |
2326 | option. | |
2327 | ||
2328 | - Support for other option spaces in the client has been added. This | |
2329 | means that it is now possible to define a vendor option space on the | |
2330 | client, request options in that space from the server (which must | |
2331 | define the same option space), and then use those options in the | |
2332 | client. This also allows NWIP and Client FQDN options to be used | |
2333 | meaningfully. | |
2334 | ||
2335 | - Add object initializer support. This means that objects can now be | |
2336 | initialized to something other than all-zeros when allocated, which | |
2337 | makes, e.g., the interface object support code a little more robust. | |
2338 | ||
2339 | - Fix an off-by-one bug in the host stuffer. This was causing host | |
2340 | deletes not the work, and may also have been causing OMAPI | |
2341 | connections to get dropped. Thanks to James Brister for tracking | |
2342 | this one down! | |
2343 | ||
2344 | - Fixed a core dump in the interface discovery code that is triggered | |
2345 | when there is no subnet declaration for an interface, but the server | |
2346 | decides to continue running. Thanks to Shane Kerr for tracking | |
2347 | down and fixing this problem. | |
2348 | ||
2349 | Changes since 3.0 Beta 2 Patchlevel 5 | |
2350 | ||
0f6045f8 TL |
2351 | - Fix a bug in the recent enhancement to the interface discovery code |
2352 | to support arbitrary-length interface lists. | |
2353 | ||
2354 | - Support NUL-terminated DHCP options when initializing client-script | |
2355 | environment. | |
2356 | ||
2357 | - Fix suffix operator. | |
2358 | ||
2359 | - Fix NetWare/IP option parsing. | |
2360 | ||
2361 | - Better error/status checking in dhcpctl initialization and omapi | |
2362 | connection code. | |
2363 | ||
2364 | - Fix a potential memory smash in dhcpctl code. | |
2365 | ||
2366 | - Fix SunOS4 and (maybe) Ultrix builds. | |
2367 | ||
2368 | - Fix a bug where a certain sort of incoming packet could cause a core | |
2369 | dump on Solaris (and probably elsewhere). | |
2370 | ||
2371 | - Add some more safety checks in error logging code. | |
2372 | ||
2373 | - Add support for ISC_R_INCOMPLETE in OMAPI protocol connection code. | |
2374 | ||
2375 | - Fix relay agent so that if an interface is specified on the command | |
2376 | line, the relay agent does not dump core. | |
2377 | ||
2378 | - Fix class matching so that match if can be combined with match or | |
2379 | spawn with. | |
2380 | ||
2381 | - Do not allow spurious leases in the lease database to introduce | |
2382 | potentially bogus leases into the in-memory database. | |
2383 | ||
2384 | - Fix a byte-order problem in the client hardware address type code | |
2385 | for OMAPI. | |
2386 | ||
2387 | - Be slightly less picky about what sort of hardware addresses OMAPI | |
2388 | can install in host declarations. | |
2389 | ||
801de092 TL |
2390 | Changes since 3.0 Beta 2 Patchlevel 4 |
2391 | ||
2392 | - Incorporated Peter Marschall's proposed change to array/record | |
2393 | parsing, which allows things like the slp-agent option to be encoded | |
2394 | correctly. Thanks very much to Peter for taking the initiative to | |
2395 | do this, and for doing such a careful job of it (e.g., updating the | |
2396 | comments)! | |
2397 | ||
2398 | - Added an encoding for the slp-agent option. :') | |
2399 | ||
6ed7a93d TL |
2400 | - Fixed SunOS 4 build. Thanks to Robert Elz for responding to my |
2401 | request for help on this with patches! | |
2402 | ||
2403 | - Incorporated a change that should fix a problem reported by Philippe | |
2404 | Jumelle where when the network connection between two servers is | |
2405 | lost, they never reconnect. | |
2406 | ||
2407 | - Fix client script files other than that for NetBSD to actually use | |
2408 | make_resolv_conf as documented in the manual page. | |
2409 | ||
2410 | - Fix a bug in the packet handling code that could result in a core | |
2411 | dump. | |
2412 | ||
2413 | - Fix a bug in the bootp code where responses on the local net would | |
2414 | be sent to the wrong MAC address. Thanks to Jerry Schave for | |
2415 | catching this one. | |
2416 | ||
490eb5e7 TL |
2417 | Changes since 3.0 Beta 2 Patchlevel 3 |
2418 | ||
2419 | - In the DHCP client, execute client statements prior to using the values | |
45d545f0 | 2420 | of options, so that the client configuration can overridden, e.g., the |
490eb5e7 TL |
2421 | lease renewal time. |
2422 | ||
2423 | - Fix a reference counting error that would result in very reproducible | |
2424 | failures in updates, as well as occasional core dumps, if a zone was | |
2425 | declared without a key. | |
2426 | ||
2427 | - Fix some Linux 2.0 compilation problems. | |
2428 | ||
2429 | - Fix a bug in scope evaluation during execution of "on" statements that | |
2430 | caused values not to be recorded on leases. | |
2431 | ||
2432 | - If the dhcp-max-message-size option is specified in scope, and the | |
2433 | client didn't send this option, use the one specified in scope to | |
2434 | determine the maximum size of the response. | |
2435 | ||
592d8153 TL |
2436 | Changes since 3.0 Beta 2 Patchlevel 2 |
2437 | ||
359b023e TL |
2438 | - Fix a case where spawning subclasses were being allocated |
2439 | incorrectly, resulting in a core dump. | |
2440 | ||
592d8153 TL |
2441 | - Fix a case where the DHCP server might inappropriately NAK a |
2442 | RENEWING client. | |
2443 | ||
2444 | - Fix a place dhcprequest() where static leases could leak. | |
2445 | ||
2446 | - Include memory.h in omapip_p.h so that we don't get warnings about | |
2447 | using memcmp(). | |
2448 | ||
2aa36519 TL |
2449 | Changes since 3.0 Beta 2 Patchlevel 1 |
2450 | ||
2451 | - Notice when SIOCFIGCONF returns more data than fit in the buffer - | |
2452 | allocate a larger buffer, and retry. Thanks to Greg Fausak for | |
2453 | pointing this out. | |
2454 | ||
2455 | - In the server, if no interfaces were configured, report an error and | |
2456 | exit. | |
2457 | ||
2458 | - Don't ever record a state of 'startup'. | |
2459 | ||
2460 | - Don't try to evaluate the local failover binding address if none was | |
2461 | specified. Thanks to Joseph Breu for finding this. |