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1 | Internet Systems Consortium DHCP Distribution | |
2 | Version 4.4.0-dev | |
3 | 29 March 2016 | |
4 | ||
5 | Release Notes | |
6 | ||
7 | NEW FEATURES | |
8 | ||
9 | The major "theme" for ISC DHCP 4.4.x .... | |
10 | ||
11 | <TBD PRIOR TO RELEASE OF 4.4.0> | |
12 | ||
13 | For information on how to install, configure and run this software, as | |
14 | well as how to find documentation and report bugs, please consult the | |
15 | README file. | |
16 | ||
17 | ISC DHCP uses standard GNU configure for installation. Please review the | |
18 | output of "./configure --help" to see what options are available. | |
19 | ||
20 | The system has only been tested on Linux, FreeBSD, and Solaris, and may not | |
21 | work on other platforms. Please report any problems and suggested fixes to | |
22 | <dhcp-users@isc.org>. | |
23 | ||
24 | ISC DHCP is open source software maintained by Internet Systems | |
25 | Consortium. This product includes cryptographic software written | |
26 | by Eric Young (eay@cryptsoft.com). | |
27 | ||
28 | Please note that as of version 4.4.0, ISC DHCP is licensed under the Mozilla | |
29 | Public License, MPL 2.0. Please see https://www.mozilla.org/en-US/MPL/2.0/ | |
30 | to read the MPL 2.0 license terms. | |
31 | ||
32 | Older versions already published under the ISC license will remain under the | |
33 | ISC license. Those unsure whether or not the license change affects their use | |
34 | of ISC DHCP, or who wish to discuss how to comply with the license may contact | |
35 | ISC at info@isc.org or use https://www.isc.org/mission/contact/. | |
36 | ||
37 | We welcome comments from DHCP users, about this or anything else we do. Email | |
38 | Vicky Risk, Product Manager at vicky@isc.org or discuss on | |
39 | dhcp-users@lists.isc.org. | |
40 | ||
41 | Changes since 4.3.0 (new features) | |
42 | ||
43 | - Insert the raw data from a fully encapsualted option into the option cache. | |
44 | This allows "exists" to check for the option if any sub options exist. It | |
45 | also adds the raw data to the environment variables supplied to the client | |
46 | script. | |
47 | [ISC-Bugs #39863] | |
48 | ||
49 | - Pass configure arguments which begin with an upper case letter, e.g. | |
50 | CFLAGS, to the embedded bind configure, so it is no longer required | |
51 | to use environment variables to get the same effect. | |
52 | [ISC-Bugs #35143] | |
53 | ||
54 | - Added --enable-kqueue, --enable-epoll, --enable-devpoll and a more | |
55 | general --with-bind-extra-config to pass extra options to the | |
56 | embedded bind configure. Note we had mixed experiences with this | |
57 | so it is at the user risk, i.e., they are NOT SUPPORTED yet. | |
58 | [ISC-Bugs #20890] | |
59 | ||
60 | - Changed the way the embedded bind Makefile is updated by configure. | |
61 | The only user visible side effect is that --with-libbind now requires | |
62 | either "no" or an (absolute) path, i.e. "yes" is no longer valid. | |
63 | [ISC-Bugs #43227] | |
64 | ||
65 | - Added the support for git repositories in the util/bind.sh script. | |
66 | When you build ISC DHCP from a git repo, i.e., without a "bind" | |
67 | directory populated as in the release distribution file, you may now | |
68 | create the bind directory, change to it and clone the private | |
69 | (repo.isc.org/proj/git/prod/bind9.git) or the public | |
70 | (https://source.isc.org/git/bind9.git) git repository into | |
71 | bind/bind9 and then invoke the util/bind.sh script as usual. | |
72 | Note this option is incompatible with "make dist" (and make "distcheck") | |
73 | because no bind/bind.tar.gz nor bind/version.tmp files are available. | |
74 | [ISC-Bugs #43236] | |
75 | ||
76 | - Use the embedded bind libraries where they are built (vs where they | |
77 | are installed). | |
78 | [ISC-Bugs #39319] | |
79 | ||
80 | - Use last version (9.11) of plain embedded bind libraries in place of | |
81 | older (9.9) version of export bind libraries. | |
82 | [ISC-Bugs #43215] | |
83 | ||
84 | - Using "make distcheck" now works with external bind libraries (aka | |
85 | configure --with-libbind). | |
86 | [ISC-Bugs #43285] | |
87 | ||
88 | - The server now allows the client identifier (option 61) to own leases | |
89 | in more than one subnet concurrently. Prior to this the server would | |
90 | incorrectly release an existing lease in one subnet prior to assigning | |
91 | a lease in another subnet. Note that the prior behavior can be still | |
92 | be achieved by enabling one-lease-per-client. Thanks to both David Zych at | |
93 | the University of Illinois and Norm Proffitt of Infoblox for reporting | |
94 | the issue; and Norm for suggesting a solution. | |
95 | [ISC-Bugs #41358] | |
96 | ||
97 | - Added --enable-bind-install to install embedded bind includes and | |
98 | libraries. Default is to not install them (it was the previous | |
99 | behavior). If you'd like to change the includedir and/or libdir | |
100 | installation directories to something different than for ISC DHCP | |
101 | you must pass them using the --with-bind-extra-config configuration | |
102 | arguments. | |
103 | [ISC-Bugs #39318] | |
104 | ||
105 | - Added support of dynamic shared libraries with libtool. A new | |
106 | --enable-libtool configuration parameter is available but | |
107 | should not be used directly: *please* read the build configuration | |
108 | section in the README file for the recommended procedure. | |
109 | [ISC-Bugs #29402] | |
110 | ||
111 | - IPv6 operation now supports an EUI-64 based address allocation which will | |
112 | calculate addresses for clients with EUI-64 DUIDs based on those DUIDs when | |
113 | enabled by setting use-eui-64 true. The parameter may defined down to the | |
114 | pool scope. Note this feature must be compiled in by defining EUI_64 in | |
115 | includes/site.h. This flag is undefined by default. | |
116 | [ISC-Bugs #43927] | |
117 | ||
118 | - Added new compile time option --with-srv-conf-file which specifies a | |
119 | default location of the server configuration file. | |
120 | [ISC-Bugs #44765] | |
121 | ||
122 | - Added --dad-wait-time parameter to dhclient. It specifies the maximum time, | |
123 | in seconds, that the client process should wait for the duplicate address | |
124 | detection to complete before initiating DHCP requests. This value is | |
125 | propagated to the dhclient script and the script is responsible for waiting | |
126 | the specified amount of time or until DAD has completed. If the script does | |
127 | not support it, specifying this parameter has no effect. The default value | |
128 | is 0 which specifies that the script should not wait for DAD. With this | |
129 | change the following scripts have been modified to support the new parameter: | |
130 | freebsd, linux, macos, netbsd, openbsd. | |
131 | [ISC-Bugs #36169] | |
132 | ||
133 | - Modified DDNS support initialization such that DNS related ports will only be | |
134 | opened by the server (dhcpd) at startup if ddns-update-style is not "none"; | |
135 | by dhclient only if and when the it first attempts an update; and never by | |
136 | dhcrelay. Prior to this all three always did the initialization at startup | |
137 | which causes them to always open on and listen for traffic on two random | |
138 | ports. Thanks to Rodney Beede for reporting the issue. | |
139 | [ISC-Bugs #45290] | |
140 | [ISC-Bugs #33377] | |
141 | ||
142 | - Added error logging to two memory allocation failure checks. Thanks to Bill | |
143 | Parker (wp02855 at gmail dot com) for reporting the issue. | |
144 | [ISC-Bugs #41185] | |
145 | ||
146 | - Corrected a dhclient -6 issue that caused the client to crash with an | |
147 | "Impossible condition" error after de-preferencing its only IA binding. | |
148 | The crash occurred when server configuration changes rendered the existing | |
149 | binding out-of-range and no other leases were available to offer. Thanks | |
150 | to Pierre Clerissi for bringing this issue to our attention. | |
151 | [ISC-Bugs #44373] | |
152 | ||
153 | - By defining CALL_SCRIPT_ON_ONETRY_FAIL in includes/site.h, dhclient will | |
154 | now call the script with reason set to FAIL when run with -1 (one try) and | |
155 | there are no server responses. This applies to IPv4 mode only. Thanks for a | |
156 | patch by Martin Pitt which got to us via Andrew Pollock. | |
157 | [ISC-bugs #18183] | |
158 | ||
159 | - Linux script updated. The script is now based on Debian version. It uses | |
160 | ip tool from iproute2 package and ifconfig is no longer used. This also | |
161 | addresses an issue of calling arping with inappropriate parameter. | |
162 | [ISC-bugs #19430] | |
163 | [ISC-bugs #18111] | |
164 | ||
165 | - The directory minires has been removed from the source tree. It has | |
166 | long been obsolete for branches other than v4_1_esv. Additionally, | |
167 | includes/minires.h was renamed includes/ns_name.h. | |
168 | [ISC-bugs #45471] | |
169 | ||
170 | - The directory includes/isc-dhcp and it's only occupant, dst.h, have | |
171 | been removed from the source tree. They are obsolete for branches | |
172 | other than v4_1_esv. | |
173 | [ISC-bugs #45541] | |
174 | ||
175 | - Replaced ISC licensing with Mozilla Public License, MPL 2.0 licensing | |
176 | throughout. Please see https://www.mozilla.org/en-US/MPL/2.0/ to read | |
177 | the MPL 2.0 license terms. | |
178 | [ISC-Bugs #45541] | |
179 | ||
180 | - Load balancing for failover peers can now be disabled by setting | |
181 | "load balance max secs" to 0. Doing so for both peers means both | |
182 | servers will respond to all DHCPDISCOVERs or DHCPREQUESTs as soon as | |
183 | they are received. | |
184 | [ISC-Bugs #39669] | |
185 | ||
186 | - Added a new dhclient command line parameter, --prefix-len-hint <length>. | |
187 | When used in conjunction with -P, it directs dhclient to use the given | |
188 | length as the prefix length hint when requesting prefixes. Thanks to | |
189 | H. Peter Anvin for suggesting this change. | |
190 | [ISC-Bugs #43792] | |
191 | [ISC-Bugs #35112] | |
192 | [ISC-Bugs #32228] | |
193 | [ISC-Bugs #29470] | |
194 | ||
195 | - dhclient will now wait for 10 seconds after declining an IPv4 address | |
196 | before issuing a discover. This is in keeping with RFC 2131, section 3.1.5. | |
197 | Prior to this dhclient did not wait at all. The amount of time dhclient | |
198 | waits can be specified via a new command line parameter: | |
199 | --decline-wait-time <seconds>. A value of zero equates to no wait at all. | |
200 | Thanks to Pavel Kankovsky for bringing this matter to our attention. | |
201 | [ISC-Bugs #45457] | |
202 | ||
203 | - Corrected dhclient command line parsing for --dad-wait-time that causes | |
204 | even valid values to fail as invalid on some environments. | |
205 | [ISC-Bugs #46535] | |
206 | ||
207 | Changes since 4.3.0 (bug fixes) | |
208 | ||
209 | - Tidy up several small tickets. | |
210 | Correct parsing of DUID from config file, previously the LL type | |
211 | was put in the wrong place in the DUID string. | |
212 | [ISC-Bugs #20962] | |
213 | ||
214 | Add code to parse "do-forward-updates" as well as "do-forward-update" | |
215 | Thanks to Jiri Popelka at Red Hat. | |
216 | [ISC-Bugs #31328] | |
217 | ||
218 | Remove log_priority as it isn't currently used. | |
219 | [ISC-Bugs #33397] | |
220 | ||
221 | Increase the size of the buffer used for reading interface information. | |
222 | [ISC-Bugs #34858] | |
223 | ||
224 | - Remove an extra set of the msg_controllen variable. | |
225 | [ISC-Bugs #21035] | |
226 | ||
227 | - Add a more understandable error message if a configuration attempts | |
228 | to add multiple keys for a single zone. Thanks to a patch from Jiri | |
229 | Popelka at Red Hat. | |
230 | [ISC-Bugs #31892] | |
231 | ||
232 | - Fix some minor issues in the dst code. | |
233 | [ISC-Bugs #34172] | |
234 | ||
235 | - Properly #ifdef functions so that the code can compile without NSUPDATE. | |
236 | [ISC-Bugs #35058] | |
237 | ||
238 | - Update the partner's stos (start time of state, basically when we last | |
239 | heard from this partner) field when updating the state in failover. | |
240 | [ISC-Bugs #35549] | |
241 | ||
242 | - Modify the overload processing to allow space for the remote agent ID. | |
243 | [ISC-Bugs #35569] | |
244 | Handle the ordering of the SUBNET_MASK option even if it is the last | |
245 | option in the list. | |
246 | [ISC-Bugs #24580] | |
247 | ||
248 | - Remove the code that allows a server to follow RFC3315 instead of | |
249 | the subsequent errata from August 2010 when determining which IAs | |
250 | to include if no addresses will be assigned. | |
251 | [ISC-Bugs #28938] | |
252 | ||
253 | - Remove unused RCSID tags. | |
254 | [ISC-Bugs #35846] | |
255 | ||
256 | - Correct the v6 client timing code. When doing the timing backoff | |
257 | for MRT limit it to MRD. | |
258 | Thanks to Jiri Popelka at Red Hat for the bug report and fix. | |
259 | [ISC-Bugs #21238 | |
260 | ||
261 | - Add a log entry when killing a client and remove the PID files | |
262 | when a server, relay or client are killed. | |
263 | [ISC-Bugs #16970] | |
264 | [ISC-Bugs #17258] | |
265 | ||
266 | - Some minor cleanups in the client code. | |
267 | In addition to checking for dhcpc check for bootpc in the services list. | |
268 | [ISC-Bugs #18933] | |
269 | Correct the client code to only try to get a lease once when the | |
270 | given the "-1" argument. | |
271 | Thanks to Jiri Popelka at Red Hat for the bug report and fix. | |
272 | [ISC-Bugs #26735] | |
273 | When asked for the version don't send the output to syslog. | |
274 | [ISC-Bugs #29772] | |
275 | Add the next server information to the environment variables for | |
276 | use by the client script. In order to avoid changing the client | |
277 | lease file the next server information isn't written to it. | |
278 | Thanks to Tomas Hozza at Red Hat for the suggestion and a prototype fix. | |
279 | [ISC-Bugs #33098] | |
280 | ||
281 | - Several updates to the dhcp server code. | |
282 | When not in quiet mode print out the files being used. | |
283 | [ISC-Bugs #17551] | |
284 | As accessing some pid files may require privileges move the dropping | |
285 | of permission bits due to the paranoia patch to be after the pid code. | |
286 | Thanks to Jiri Popelka at Red Hat for the bug report and fix. | |
287 | [ISC-Bugs #25806] | |
288 | When processing a "--version" request don't output the version information | |
289 | to syslog. | |
290 | ||
291 | - Add the "enable-log-pid" build option to the configure script. When enabled | |
292 | this causes the client, server and relay programs to include the PID | |
293 | number in syslog messages. | |
294 | Thanks to Marius Tomaschewski for the suggestion and proto-patch. | |
295 | [ISC-Bugs #29713] | |
296 | ||
297 | - Add a #define to specify the prefix length used when a client attempts | |
298 | to configure an address. This can be modified by editing includes/site.h. | |
299 | By default it is set to 64. While 128 might be a better choice it would | |
300 | also be a change for currently running systems, so we have left it at 64. | |
301 | [ISC-Bugs #DHCP-2] | |
302 | ||
303 | - Add a run time option to the client "-df" to allow the administrator to | |
304 | point to a second lease file the client can search for a DUID. This can | |
305 | be used to allow a v4 and a v6 instance of the client to share a DUID. | |
306 | The second file will only be searched if there isn't a DUID in the main | |
307 | lease file and the DUID will be written out to the main lease file. | |
308 | [ISC-Bugs #34886] | |
309 | ||
310 | - Have the client fsync the lease file to avoid lease corruption if the | |
311 | client hibernates or otherwise shuts down. | |
312 | [ISC-Bugs #35894] | |
313 | ||
314 | - Add a check for L2VLAN in bpf.c to help support VLAN interfaces | |
315 | Thanks to Steinar Haug for the suggestion. | |
316 | [ISC-Bugs #36033] | |
317 | ||
318 | - Modify the handling of the resolv.conf file to allow the DHCP | |
319 | process to start up even if the resolv.conf file has problems. | |
320 | [ISC-Bugs #35989] | |
321 | ||
322 | - Add threshold logging functionality. Two new options, | |
323 | log-threshold-low and log-threshold-high, indicate to the | |
324 | server if and when it should log an error message as addresses | |
325 | in a pool are used. | |
326 | [ISC-Bugs #34487] | |
327 | ||
328 | - Add code to properly dereference a pointer in the dhclient code | |
329 | on an error condition. | |
330 | [ISC-Bugs #36194] | |
331 | ||
332 | - Add code to help clean up soft leases. | |
333 | [ISC-Bugs #36304] | |
334 | ||
335 | - Disable the gentle shutdown functionality until we can determine | |
336 | the best way to present it to remove or reduce the side effects. | |
337 | [ISC-Bugs #36066] | |
338 | ||
339 | - Modify the message displayed when a process hits a fatal error. | |
340 | The new message is much shorter and simply points to the README | |
341 | and our website for directions on bug submissions. | |
342 | [ISC-Bugs #24789] | |
343 | ||
344 | - Handle an absent resolv.conf file better. | |
345 | [ISC-Bugs #35194] | |
346 | ||
347 | - Tidy up receive packet processing. | |
348 | Thanks to Brad Plank of GTA for reporting the issue and suggesting | |
349 | a possible patch. | |
350 | [ISC-Bugs #34447] | |
351 | ||
352 | - Corrected parser's right brace matching when a statement contains an error. | |
353 | [ISC-Bugs #36021] | |
354 | ||
355 | - TSIG-authenticated dynamic DNS updates now support the use of these | |
356 | additional algorithms: hmac-sha1, hmac-sha224, hmac-sha256, hmac-sha384, | |
357 | and hmac-sha512 | |
358 | [ISC-Bugs #36947] | |
359 | ||
360 | - Added check for invalid failover message type. Thanks to Tobias Stoeckmann | |
361 | working with the OpenBSD project who spotted the issue and provided the | |
362 | patch. | |
363 | [ISC-Bugs #36653] | |
364 | ||
365 | - Corrected rate limiting checks for bad packet logging. Thanks to Tobias | |
366 | Stoeckmann working with the OpenBSD project who spotted the issue and | |
367 | provided the patch. | |
368 | [ISC-Bugs #36897] | |
369 | ||
370 | - Log statements depicting what files will be used by the server now occur | |
371 | after the configuration file has been processed. | |
372 | [ISC-Bugs #36671] | |
373 | ||
374 | - Addressed Coverity issues reported as of 07-31-2014: | |
375 | [ISC-Bugs #36712] Corrects Coverity reported "high" impact issues. | |
376 | [ISC-Bugs #36933] Corrects Coverity reported "medium" impact issues | |
377 | [ISC-Bugs #37708] Fixes compilation error in dst_api.c seen in older | |
378 | compilers that was introduced by #36712 | |
379 | ||
380 | - Server now supports a failover split value of 256. | |
381 | [ISC-Bugs] #36664] | |
382 | ||
383 | - Remove unneeded error #defines. These defines were included in case | |
384 | external programs required the older versions of the macro. They | |
385 | have been #ifdeffed for now and will be removed at a future date. | |
386 | See site.h for the #define to include them again, but you should | |
387 | switch to using the DHCP_R_* versions instead of the ISC_R_* versions. | |
388 | Also ISC_R_MULTIPLE has been removed as it is also defined in bind. | |
389 | [ISC-Bugs #37128] | |
390 | ||
391 | - Added checks in range6 and prefix6 statement parsing to ensure addresses | |
392 | are within the declared subnet. Thanks to Jiri Popelka at Red Hat for the | |
393 | bug report and patch. | |
394 | [ISC-Bugs #32453] | |
395 | [ISC-Bugs #17766] | |
396 | [ISC-Bugs #18510] | |
397 | [ISC-Bugs #23698] | |
398 | [ISC-Bugs #28883] | |
399 | ||
400 | - Addressed checksum issues: | |
401 | Added checksum readiness check to Linux packet filtering which eliminates | |
402 | invalid packet drops due to checksum errors when checksum offloading is | |
403 | in use. Based on dhcp-4.2.2-xen-checksum.patch made to the Fedora project. | |
404 | [ISC-Bugs #22806] | |
405 | [ISC-Bugs #15902] | |
406 | [ISC-Bugs #17739] | |
407 | [ISC-Bugs #18010] | |
408 | [ISC-Bugs #22556] | |
409 | [ISC-Bugs #29769] | |
410 | Inbound packets with UDP checksums of 0xffff now validate correctly rather | |
411 | than being dropped. | |
412 | [ISC-Bugs #24216] | |
413 | [ISC-Bugs #25587] | |
414 | ||
415 | - Added the echo-client-id configuration parameter to the server configuration. | |
416 | The server now supports RFC 6842 compliant behavior by setting a new | |
417 | configuration parameter, echo-client-id. When enabled, the server will | |
418 | include the client identifier option (Option code 61) if received, in its | |
419 | responses. The server identifier returned in NAKs (if enabled) will now | |
420 | be the globally defined value (if one) if the server cannot attribute the | |
421 | inbound request to a known subnet. | |
422 | [ISC-Bugs #35958] | |
423 | [ISC-Bugs #32545] | |
424 | ||
425 | - Added support of the configuration parameter, use-host-decl-names, to | |
426 | BOOTP request handling. | |
427 | [ISC-Bugs #36233] | |
428 | ||
429 | - Added logic to ignore the signal, SIGPIPE, which ensures write failures | |
430 | will be delivered as errors rather than as SIGPIPE signals on all OSs. | |
431 | Thanks to Marius Tomaschewski from SUSE who reported the issue and provided | |
432 | the patch upon which the fix is based. | |
433 | [ISC-Bugs #32222] | |
434 | ||
435 | - In the failover code, handle the case of communications being interrupted | |
436 | when the servers are dealing with POTENTIAL-CONFLICT. This patch allows | |
437 | the primary to accept the secondary moving from POTENTIAL-CONFLICT to | |
438 | RESOLUTION-INTERRUPTED as well as handling the bind update process better. | |
439 | In addition the code to resend update or update all requests has been | |
440 | modified to send requests more often. | |
441 | [ISC-Bugs #36810] | |
442 | [ISC-Bugs #20352] | |
443 | ||
444 | - By default, the server will now choose the value to use in the forward DNS | |
445 | name from the following in order of preference: | |
446 | ||
447 | 1. FQDN option if provided by the client | |
448 | 2. Host name option if provided by the client | |
449 | 3. Configured option host-name if defined | |
450 | ||
451 | As before, this may be overridden by defining ddns-hostname to the desired | |
452 | value (or expression). In addition, the server logic has been extended to | |
453 | use the value of the host name declaration if use-host-decl-names is enabled | |
454 | and no other value is available. | |
455 | [ISC-Bugs #21323] | |
456 | ||
457 | - DNS updates were being attempted when dhcp-cache-threshold enabled the use of | |
458 | the existing lease and the forward DNS name had not changed. This has been | |
459 | corrected. | |
460 | [ISC-Bugs #37368] | |
461 | [ISC-Bugs #38636] | |
462 | ||
463 | - Corrected an issue which caused dhclient to incorrectly form the result when | |
464 | prepending or appending to the IPv4 domain-search option, received from the | |
465 | server, when either of the values being combined contain compressed | |
466 | components. | |
467 | [ISC-Bugs #20558] | |
468 | ||
469 | - Added the server-id-check parameter to the server configuration. | |
470 | This parameter allows run-time control over whether or not a server, | |
471 | participating in failover, verifies the dhcp-server-identifier option in | |
472 | DHCP REQUESTs against the server's id before processing the request. | |
473 | Formerly, enabling this behavior was done at compilation time through | |
474 | the use of the #define, SERVER_ID_CHECK, which has been removed from site.h | |
475 | The functionality is now only available through the new runtime parameter. | |
476 | [ISC-Bugs #37551] | |
477 | ||
478 | - During startup, when the server encounters a lease whose binding state is | |
479 | FTS_BACKUP but whose pool has no configured failover peer, it will reset the | |
480 | lease's binding state to FTS_FREE. This allows the leases to be reclaimed | |
481 | by the server after a pool's configuration has changed from failover to | |
482 | standalone. Prior to this such leases would remain stuck in the backup state | |
483 | making them unavailable for assignment. Note this conversion will occur | |
484 | whether or not the server is compiled for failover. | |
485 | [ISC-Bugs #36960] | |
486 | ||
487 | - Fixed a small issue in the treatment of hosts in the inform processing | |
488 | that could cause the response to an inform to include information from | |
489 | the wrong scope. The two examples we've heard of are getting subnet | |
490 | instead of group information associated with a host entry, or getting | |
491 | global information instead of subnet if the host entry was built via | |
492 | omapi. Thanks to Julien Soula at University of Lille for finding the | |
493 | bug and supplying a patch. | |
494 | [ISC-Bugs #35712] | |
495 | ||
496 | - Avoid calling pool_timer() recursively from supersede_lease(). This could | |
497 | result in leases changing state incorrectly or delaying the running of the | |
498 | leae expiration code. | |
499 | [ISC-Bugs #38002] | |
500 | ||
501 | - Move the check for a PID file and process to be before we rewrite the | |
502 | lease file. This avoids the possibility of starting a second instance | |
503 | of a server which changes the current lease file confusing the first | |
504 | instance. This check is only included if the admin hasn't disabled PID | |
505 | files. | |
506 | [ISC-Bugs #38078] | |
507 | [ISC-Bugs #38143] | |
508 | ||
509 | - In the client code change the way preferred_life and max_life are printed | |
510 | for environment variables to be unsigned rather than signed. | |
511 | Thanks to Jiri Popelka at Red Hat for the bug report and patch. | |
512 | [ISC-Bugs #37084] | |
513 | ||
514 | - Modified Linux packet handling such that packets received via VLAN are now | |
515 | seen only by the VLAN interface. Prior to this, such packets were seen by | |
516 | both the VLAN interface and its parent (physical) interface, causing the | |
517 | server to respond to both. Note this remains an issue for non-Linux OSs. | |
518 | Thanks to Jiri Popelka at Red Hat for the patch. | |
519 | [ISC-Bugs #37415] | |
520 | [ISC-Bugs #37133] | |
521 | [ISC-Bugs #36668] | |
522 | [ISC-Bugs #36652] | |
523 | ||
524 | - Log content has been changed to more directly suggest that admins should | |
525 | check for multiple IPv6 clients attempting to use the same DUID when only | |
526 | abandoned addresses are available. Debug level logging will now emit counts | |
527 | of the total number of, in-use, and abandoned addresses in a shared subnet | |
528 | when the server finds no addresses available for a given DUID. Lastly, | |
529 | threshold logging is now automatically disabled for shared subnets whose | |
530 | total number of possible addresses exceeds (2^64)-1. | |
531 | [ISC-Bugs #26376] | |
532 | [ISC-Bugs #38131] | |
533 | ||
534 | - Added a global parameter, prefix-length-mode, which may be used to determine | |
535 | how the server uses a non-zero value for prefix-length supplied by clients | |
536 | when soliciting DHCPv6 prefixes. The server supports selection modes of: | |
537 | ignore, prefer, exact, minimum and maximum which are described in detail in | |
538 | the server man pages. The prior behavior of the server was to only offer a | |
539 | prefix whose length exactly matched the prefix-length value requested. If | |
540 | no such prefixes were available, the server returned a status of none | |
541 | available. Note the default mode, "exact", provides this same behavior. | |
542 | [ISC-Bugs #36780] | |
543 | [ISC-Bugs #32228] | |
544 | ||
545 | - Corrected inconsistencies in dhcrelay's setting the upper interface hop count | |
546 | limit such that it now sets it to 32 when the upstream address is a multicast | |
547 | address per RFC 3315 Section 20. Prior to this if the -u argument preceded | |
548 | the -l argument on the command line or if the same interface was specified | |
549 | for both; the logic to set the hop limit count for the upper interface was | |
550 | skipped. This caused the hop count limit to be set to the default value | |
551 | (typically 1) in the outbound upstream packets. | |
552 | [ISC-Bugs #37426] | |
553 | ||
554 | - Modify the linux and openwrt dhclient scripts to process information | |
555 | from a stateless request. Thanks to Jiri Popelka at Red Hat for the | |
556 | bug report and patch. | |
557 | [ISC-Bugs #36102] | |
558 | ||
559 | - Remove more unused RCSID tags. These weren't noticed in 4.3 as | |
560 | the code isn't used anymore but we remove them here to keep the | |
561 | code consistent across versions. | |
562 | [ISC-Bugs #36451] | |
563 | ||
564 | - The server now does a better check to see if it can allocate the memory | |
565 | for large blocks of v4 leases and should provide a slightly better error | |
566 | message. Note well: the server pre-allocates v4 addresses, if you use | |
567 | a large range, such as a /8, the server will attempt to use a large | |
568 | amount of memory and may not start if there either isn't enough memory | |
569 | or the size exceeds what the code supports. | |
570 | [ISC-Bugs #38637] | |
571 | ||
572 | - The server will now reject unicast Request, Renew, Decline, and Release | |
573 | messages from a client unless the server would have sent that client the | |
574 | dhcp6.unicast option. This behavior is in compliance with paragraph 1 in | |
575 | each of the sections 18.2,1, 18.2.3, 18.2.6, and 18.2.7 of RFC 3315. Prior | |
576 | to this, the server would simply accept the messages. Now, in order for | |
577 | the server to accept such a message, the server configuration must include | |
578 | the dhcp6.unicast option either globally or within the shared network to | |
579 | which the requested lease belongs. In other words, the server will map | |
580 | the first IA_XX address found within the client message to a shared-network | |
581 | and look for the presence of the unicast option there and then globally. | |
582 | Thanks to Jiri Popelka at Red Hat for this issue and his patch which | |
583 | inspired the fix. | |
584 | [ISC-Bugs #21235] | |
585 | ||
586 | - The ATF (Automated Testing Framework) tools used for optional unit tests | |
587 | can now be built from its embedded sources in bind, solving the | |
588 | atf-run / atf-report issue with recent (>= 0.20) versions of ATF. | |
589 | The new configuration option is "./configure --with-atf=bind". | |
590 | [ISC-Bugs #38754, #39300] | |
591 | ||
592 | - Corrected a compilation error introduced by the fix for ISC-Bugs #22806. | |
593 | On older linuxes that do not include the tpacket_auxdata structure don't | |
594 | bother allocating the cmsgbuf as it isn't necessary and we don't have | |
595 | a proper length for it. | |
596 | [ISC-Bugs #39209] | |
597 | ||
598 | - Remove the dst directory. This was replaced in 4.2.0 with the dst | |
599 | code from the Bind libraries but we continued to include it for | |
600 | backwards compatibility. As we have now released 4.3.x it seems | |
601 | reasonable to remove it. | |
602 | [ISC-Buts #39019] | |
603 | ||
604 | - Write out the DUID server id on startup in all cases, previously if it | |
605 | was read in from server-duid option in the config or lease files for | |
606 | DHCPv4 it would not be written to the new lease file. | |
607 | [ISC-Bugs #37791] | |
608 | ||
609 | - When parsing dates for leases convert dates past 2038 to "never". | |
610 | This avoids problems with integer overflows in the date and time | |
611 | handling code for people that decide to use very large lease times | |
612 | or add a lease entry with a date far in the future. | |
613 | [ISC-Bugs #33056] | |
614 | ||
615 | - Leave the siaddr field clear when sending a NACK as per RFC 2131 | |
616 | table 3. | |
617 | [ISC-Bugs #38769] | |
618 | ||
619 | - In the client don't send expired addresses to the script as part of | |
620 | the binding process. Thanks to Sven Trenkel at Google for reporting | |
621 | the issue and suggesting the patch. | |
622 | [ISC-Bugs #38631] | |
623 | ||
624 | - While parsing IPv6 addresses treat "add" as part of the address instead | |
625 | of as a token. | |
626 | [ISC-Bugs #39529] | |
627 | ||
628 | - Add support for accessing the v4 lease queues (active, free etc) in a | |
629 | binary fashion instead of needing to walk through a linear list to | |
630 | insert, find or remove an entry from the queues. In addition add a | |
631 | compile time option "--enable-binary-leases" to enable the new code | |
632 | or to continue using the old code. The old code is the default. | |
633 | Thanks to Fernando Soto from BlueCat Networks for the patch. | |
634 | [ISC-Bugs #39078] | |
635 | ||
636 | - Delayed-ack now works properly with Failover. Prior to this, bind updates | |
637 | post startup were being queued but never delivered. Among other things, this | |
638 | was causing leases to not transition from expired or released to free. | |
639 | [ISC-Bugs #31474] | |
640 | ||
641 | - Clean up parsing of v6 lease files a bit to avoid infinite loops if the | |
642 | lease file is corrupt in certain ways. | |
643 | [ISC-Bugs #39760] | |
644 | ||
645 | - Corrected a crash in dhclient that occurs during lease renewal if the | |
646 | client is performing its own DNS updates. Thanks to Jiri Popelka at Red Hat | |
647 | for the bug report. | |
648 | [ISC-Bugs #38639] | |
649 | ||
650 | - Corrected an issue in v6 lease file parsing. Prior to this, when encountering | |
651 | a lease with an address for which no configured pool exists, the server was | |
652 | declaring the lease file corrupt and incorrectly skipping over the subsequent | |
653 | entry in the file. The server will now emit a log message indicating that | |
654 | no pool was found for the address (or prefix) and correctly resume parsing | |
655 | with the next entry in the lease file. Our thanks to Michal Žejdl for | |
656 | reporting the issue. | |
657 | [ISC-Bugs #39314] | |
658 | ||
659 | - Be more liberal in finding a subnet group associated with a static | |
660 | prefix. When we added the class matching code for v6 we also added | |
661 | a requirement that the static prefix must be within a subnet the | |
662 | client was in, in order to find the proper statements. We now | |
663 | look for a subnet based on the prefix, failing that on the static | |
664 | address for the client and failing that on the shared network | |
665 | itself. | |
666 | [ISC-Bugs #38329] | |
667 | ||
668 | - Add a new action expression "parse_vendor_options", which can be used | |
669 | to parse a vendor-encapsualted-option received by the server based on | |
670 | the encoding specified by the vendor-option-space statement. | |
671 | [ISC-Bugs #36449] | |
672 | ||
673 | - Enhance the PARANOIA patch to include fchown() the lease file to | |
674 | allow it to be manipulated after the server does a chown(). | |
675 | Thanks to Jiri Popelka at Red Hat for the patch. | |
676 | [ISC-Bugs #36978] | |
677 | ||
678 | - Relax the requirement that prefix pools must be within the subnet. | |
679 | This was added in as part of #32453 in order to avoid configuration | |
680 | mistakes but is being removed as prefixes aren't required to be | |
681 | within the same subnet and many people configure them in that fashion. | |
682 | [ISC-Bugs #40077] | |
683 | ||
684 | - Fixed a server crash that could occur when the server attempts to remove | |
685 | the billing class from the last lease billed to a dynamic class after said | |
686 | class has been deleted. Our thanks to Lasse Pesonen for reporting the | |
687 | issue. | |
688 | [ISC-Bugs #39978] | |
689 | ||
690 | - LDAP Patches - Numerous small patches submitted by contributors have | |
691 | been applied to the contributed code which supplies LDAP support. | |
692 | In addition, two larger submissions have also been included. The | |
693 | first adds support for IPv6 configuration and the second provides | |
694 | GSSAPI authentication. We would like to thank the following for their | |
695 | contributions (alphabetically): | |
696 | Alex Novak at SUSE | |
697 | Bill Parker (wp02855 at gmail dot com) | |
698 | Jiri Popelka at Red Hat | |
699 | Marius Tomaschewski at SUSE | |
700 | (william at adelaide.edu.au), The University of Adelaide | |
701 | [ISC-Bugs #39056] | |
702 | [ISC-Bugs #22742] | |
703 | [ISC-Bugs #24449] | |
704 | [ISC-Bugs #28545] | |
705 | [ISC-Bugs #29873] | |
706 | [ISC-Bugs #30183] | |
707 | [ISC-Bugs #30402] | |
708 | [ISC-Bugs #32217] | |
709 | [ISC-Bugs #32240] | |
710 | [ISC-Bugs #33176] | |
711 | [ISC-Bugs #33178] | |
712 | [ISC-Bugs #36409] | |
713 | [ISC-Bugs #36774] | |
714 | [ISC-Bugs #37876] | |
715 | ||
716 | - Handle an out of memory condition in the client a bit better. | |
717 | Thanks to Frédéric Perrin from Brocade for finding the issue | |
718 | and suggesting a patch. | |
719 | [ISC-Bugs #39279] | |
720 | ||
721 | - Corrected a compilation error introduced by the fix for ISC-Bugs #37415. | |
722 | The error occurs on Linux variants that do not support VLAN tag information | |
723 | in packet auxiliary data. The configure script now only enables inclusion | |
724 | of the VLAN tag-based logic if it is supported by the underlying OS. | |
725 | [ISC-Bugs #38677] | |
726 | ||
727 | - Specifying the option, --disable-debug, on the configure script command line | |
728 | now disables debug features. Prior to this, specifying --disable-debug | |
729 | incorrectly enabled debug features. Thanks to Gustavo Zacarias for reporting | |
730 | the issue. | |
731 | [ISC-Bugs #37780] | |
732 | ||
733 | - Unit test execution now uses a path augmented during configuration | |
734 | processing of the --with-atf option to locate ATF runtime tools, atf-run | |
735 | and atf-report. For most installations of ATF, this should alleviate the | |
736 | need to manually include them in the PATH, as was formerly required. | |
737 | If the configure script cannot locate the tools it will emit a warning, | |
738 | informing the user that the tools must be in the PATH when running unit | |
739 | tests. | |
740 | Secondly, please note that "make check" will now exit with a failure status | |
741 | code (non-zero) if one or more unit tests fail. This means that invoking | |
742 | "make check" from an upper level directory will cause the make process to | |
743 | STOP after the first test subdirectory with failed test(s). To force all | |
744 | tests in all subdirectories to run, regardless of individual test outcome, | |
745 | use the command "make -k check". | |
746 | [ISC-Bugs #38619] | |
747 | ||
748 | - Corrected a static analyzer warning in common/execute.c | |
749 | [ISC-Bugs #40374] | |
750 | ||
751 | - ISC DHCP now follows the common convention to use the base name a | |
752 | program is invoked with (aka argv[0], vs. a builtin name) for | |
753 | logs. This should help differentiate syslog entries for DHCPv4 and | |
754 | DHCPv6 servers. You can define OLD_LOG_NAME in includes/site.h to | |
755 | keep the previous behavior. | |
756 | [ISC-Bugs #38692] | |
757 | ||
758 | - The Linux packet filter code now correctly treats only the least significant | |
759 | 12 bits in an inbound packet's TCI value as the VLAN id (per IEEE 802.1Q). | |
760 | Prior to this it was using the entire 16 bit value as the VLAN id and | |
761 | incorrectly discarding packets. Thanks to Jiri Popelka at Red Hat for | |
762 | reporting this issue and supplying its patch. | |
763 | [ISC-Bugs #40591] | |
764 | ||
765 | - Fixed several static analysis issues such as potential null | |
766 | references, unchecked strdup returns. Thanks to Bill Parker (wp02855 at | |
767 | gmail dot com) who identified these issues and supplied patches to | |
768 | address them. | |
769 | [ISC-Bugs #40754] | |
770 | [ISC-Bugs #40823] | |
771 | ||
772 | - Corrected compilation errors that prohibited building the server | |
773 | and its ATF unit tests when failover is disabled. | |
774 | [ISC-Bugs #40372] | |
775 | ||
776 | - Added the lease address to the end of the debug level log message | |
777 | emitted when an existing lease is renewed within the dhcp-cache-threshold. | |
778 | Thanks to Nathan Neulinger at Missouri S&T for suggesting the change. | |
779 | [ISC-Bugs #40598] | |
780 | ||
781 | - Added dhcpv6 and delayed-ack to settings listed in the "Features:" | |
782 | section of the configure script output. Additionally, all of the | |
783 | features reported on will now always show either a "yes" or "no" | |
784 | value. Prior to this features left to their default setting would | |
785 | not show a value. | |
786 | [ISC-Bugs #40381] | |
787 | ||
788 | - Added a parameter, authoring-byte-order, to the lease file. This value | |
789 | is automatically added to the top of new lease files by the server and | |
790 | indicates the internal byte order (big endian or little endian) of the | |
791 | server. This permits lease files generated on a server with one form of | |
792 | byte order to be used on a server with the opposite form. Our thanks to | |
793 | Timothe Litt for calling this to our attention and for the suggestions | |
794 | he provided. | |
795 | [ISC-Bugs #38396] | |
796 | ||
797 | - Fixed a small memory leak in the DHCPv6 version of the client code. | |
798 | This is unlikely to cause significant issues in actual use. | |
799 | [ISC-Bugs #40990] | |
800 | ||
801 | - Corrected a few minor memory leaks in omapi's dereferencing of | |
802 | host objects. Thanks to Jiri Popelka at Red Hat for reporting | |
803 | the issue and supplying the patches. | |
804 | [ISC-Bugs #33990] | |
805 | [ISC-Bugs #41325] | |
806 | ||
807 | - Cleaned up some of the Make infrastructure to make --with-libbind | |
808 | work better. Though it still only works with an absolute path. | |
809 | [ISC-Bugs #39210] | |
810 | ||
811 | - Made the embedded bind libraries able to be cross compiled | |
812 | (please refer to the bind9 documentation to learn how to cross | |
813 | compile DHCP and its bind library dependency). | |
814 | [ISC-Bugs #38836] | |
815 | ||
816 | - Update the client code to better support getting IA_NAs and IA_PDs | |
817 | in the same packet, see RFC7550 for some discussion. | |
818 | [ISC-Bugs #40190] | |
819 | ||
820 | ! Update the bounds checking when receiving a packet. | |
821 | Thanks to Sebastian Poehn from Sophos for the bug report and a suggested | |
822 | patch. | |
823 | [ISC-Bugs #41267] | |
824 | CVE: CVE-2015-8605 | |
825 | ||
826 | - When handling an incorrect command line for dhcpd, dhclient or dhcrelay | |
827 | print out a specific error message about the first error in addition | |
828 | to the usage string. This may be disabled by editing includes/site.h. | |
829 | [ISC-Bugs #40321] | |
830 | [ISC-Bugs #41454] | |
831 | ||
832 | - The configure script will now exit with an error message if it cannot find | |
833 | a GNU-style make tool (needed when building BIND libraries) or pkg-config | |
834 | (needed to locate ATF used for building unit tests). Prior to this the | |
835 | script would exit indicating success causing subsequent attempts to build | |
836 | the software to fail. | |
837 | [ISC-Bugs #40371] | |
838 | ||
839 | - Properly terminate strings before passing them to regex and fix | |
840 | a boundary error when creating certain new data strings. | |
841 | Thanks to Andrey Jr. Melnikov for the bug report. | |
842 | [ISC-Bugs #41217] | |
843 | ||
844 | - Option expressions, such as prepend and append, are now supported when | |
845 | running dhclient for IPv6. Prior to this such statements in the | |
846 | client configuration file would be parsed but have no affect. Thanks | |
847 | to Jiri Popelka at Red Hat for reporting the issue. | |
848 | [ISC-Bugs #39952] | |
849 | ||
850 | - A failover primary server will now accept a binding status update from the | |
851 | secondary which transitions a lease from ACTIVE to ABANDONED. This accounts | |
852 | for instances in which a client declines a lease and only the secondary | |
853 | server receives it. Prior to this the primary server would reject such an | |
854 | update as an "invalid state transition". | |
855 | [ISC_BUGS #25189] | |
856 | ||
857 | - Properly allocate memory for a bpf filter. | |
858 | Thanks to Bill Parker (wp02855 at gmail dot com) who identified this issue. | |
859 | [ISC-Bugs #41485] | |
860 | ||
861 | - Updated contrib/dhcp-lease-list.pl to handle garbage in the oui file better | |
862 | and to print out the hostnames a bit better. | |
863 | Thanks to Antoine Beaupré from Debian for the suggested patch. | |
864 | [ISC-Bugs #41288] | |
865 | ||
866 | - The DHCPv6 server now handles long valid and preferred lease times better. | |
867 | Values that would cause the internal end time of the lease to wrap are | |
868 | modified to work as infinite. | |
869 | [ISC-Bugs #40773] | |
870 | ||
871 | - Updated support for cross compiling by allowing the library archiver | |
872 | to be set at configure time via the environment variable 'AR'. | |
873 | [ISC-Bugs #41536] | |
874 | ||
875 | - The server will now match DHCPv6 relayed clients to host declarations | |
876 | which include the "hardware" statement, if the relay connected to the | |
877 | client supplies the client's hardware address via client-linklayer-address | |
878 | option as per RFC 6939. | |
879 | [ISC-Bugs #40334] | |
880 | ||
881 | - Allow a filename to be specified instead of /dev/random during | |
882 | configuration. This is passed to the BIND configuration to allow | |
883 | for cross compilation. | |
884 | [ISC-Bugs #33835] | |
885 | ||
886 | - Add more option definitions. | |
887 | [ISC-Bugs #40562] | |
888 | ||
889 | - Correct outputting of long lines in the lease file when writing | |
890 | a lease that includes long strings in an execute statement. | |
891 | [ISC-Bugs #40994] | |
892 | ||
893 | - The server will now correctly treat a lease as reserved when the client | |
894 | requests an infinite lease time (i.e. OxFFFFFFFF) and "infinite-is-reserved" | |
895 | is enabled. Prior to this the server would halt. In addition, corrections | |
896 | were made to the server to allow a lease's flags field to be set via omapi. | |
897 | Prior to this, the server, depending on the host architecture, would | |
898 | incorrectly parse the new flags value from the omapi message. | |
899 | [ISC-Bugs #31179] | |
900 | ||
901 | - ISC DHCP can now be configured and built from a directory other than | |
902 | the top level source directory. Note that "make distcheck" uses this | |
903 | feature. | |
904 | [ISC-Bugs #39262] | |
905 | ||
906 | - Add support for RFC 3527 to dhcrelay. A new, dhcrelay command line argument, | |
907 | "-U <interface>" enables the addition of a RFC 3527 compliant link selection | |
908 | suboption to the agent option added for clients directly connected to the | |
909 | relay. | |
910 | [ISC-Bugs #34875] | |
911 | [ISC-Bugs #41708] | |
912 | ||
913 | - Add a new global DHCPv6 option, dhcpv6-set-tee-times, which when enabled | |
914 | instructs the server to calculate T1 and T2 as recommended in RFC 3315, | |
915 | Section 22.4. | |
916 | [ISC-Bugs #25687] | |
917 | ||
918 | - Corrected minor Coverity issues. | |
919 | [ISC-Bugs #35144] | |
920 | ||
921 | - Add support for RFC 7341 DHCPv4 over DHCPv6 with a new configuration | |
922 | option "--enable-dhcpv4o6". Note this feature requires DHCPv6 support | |
923 | and is not compatible with delayed-ack. Both client and server use 2 | |
924 | processes which communicate over UDP on a pair of sockets. The new | |
925 | "-4o6 <port>" command line argument enables DHCPv4 over DHCPv6 support | |
926 | and specifies the consecutive ports to use for inter-process communication. | |
927 | Please look at doc/DHCPv4-over-DHCPv6 for more details. | |
928 | [ISC-Bugs #35711] | |
929 | ||
930 | - Correct interface name formation when using DLPI under Solaris 11. As of | |
931 | Solaris 11, ethernet device files are located in "/dev/net". The configure | |
932 | script has been modified to detect this situation and adjust the directory | |
933 | used accordingly. Thanks to Jarkko Torppa for reporting this issue and | |
934 | submitting a patch | |
935 | [ISC-Bugs #37954] | |
936 | [ISC-Bugs #40752] | |
937 | ||
938 | - Add a dereference call when handling an error condition while | |
939 | decoding a packet. | |
940 | [ISC-Bugs #41774] | |
941 | ||
942 | - Add a new parameter, lease-id-format, to both dhcpd and dhclient. The | |
943 | parameter controls the format in which certain values are written to lease | |
944 | files. Formats supported are octal - quoted string containing octal | |
945 | escapes, and hex - unquoted, colon separated hex digits. Thanks to | |
946 | Jay Ford, University of Iowa for bringing the issue to our attention. | |
947 | [ISC-Bugs #26378] | |
948 | ||
949 | ! Add an option in site.h to limit the number of failover and control | |
950 | connections the server will accept. By default this is 200. | |
951 | [ISC-Bugs #41845] | |
952 | CVE: CVE-2016-2774 | |
953 | ||
954 | - Fixed util/bindvar.sh error handling. | |
955 | [ISC-Bugs #41973] | |
956 | ||
957 | - Correct error message in relay to use remote id length instead | |
958 | of circuit id length. | |
959 | [ISC-Bugs #42556] | |
960 | ||
961 | - Add support for including an encapsulated option in a response | |
962 | from the DHCPv6 server. This allows the v6 FQDN option to be | |
963 | returned in responses. | |
964 | [ISC-Bugs #29246] | |
965 | ||
966 | - Add logic to test directory Makefiles to avoid copying Attfile(s) | |
967 | when building within the source tree. This eliminates a noisy but | |
968 | otherwise harmless error message when running "make check". | |
969 | [ISC-Bugs #41883] | |
970 | ||
971 | - Leases are now scrubbed of certain prior use information when pool | |
972 | re-balancing reassigns them from one FO peer to the other. This | |
973 | corrects an issue where leases that were offered but not used | |
974 | by the client retained the client hostname from the original | |
975 | client. Thanks to Pavel Polacek, Jan Evangelista Purkyne University | |
976 | for reporting the issue. | |
977 | [ISC-Bugs #42008] | |
978 | ||
979 | - In the LDAP code and schema add some missing '6' characters to use | |
980 | the v6 instead of the v4 versions. Thanks to Denis Taranushin for | |
981 | reporting this issue and supplying its patch. | |
982 | [ISC-Bugs #42666] | |
983 | ||
984 | - Correct how the pick-first-value expression is written to a lease | |
985 | file. Previously it was written as a concat expression due to | |
986 | a cut and paste error. | |
987 | [ISC-Bugs #42253] | |
988 | ||
989 | - Modify the DDNS code to clean up the PTR record even if there | |
990 | are issues while cleaning up the A or AAAA records. | |
991 | [ISC-Bugs #23954] | |
992 | ||
993 | - Added global configuration parameter, abandon-lease-time, which determines | |
994 | the amount of time a lease remains abandoned. The default is 84600 seconds. | |
995 | Additionaly, the server now conducts a ping check (if ping checks are | |
996 | enabled) prior to offering an abandoned lease to client. Our thanks to | |
997 | David Zych at University of Illinois for reporting the issue and working | |
998 | with us to produce a viable solution. | |
999 | [ISC-Bugs #41815] | |
1000 | ||
1001 | - Correct handling of interface names during interface discovery. This | |
1002 | addresses an issue where interface names of 15 characters in length | |
1003 | could lead to crashes or interface recognition errors during startup | |
1004 | of dhcpd, dhclient, and dhcrelay. | |
1005 | [ISC-Bugs #42226] | |
1006 | ||
1007 | - Updates to contrib/dhcp-lease-list.pl to make it more friendly. | |
1008 | The updates are: looking for the lease file in more places and skipping | |
1009 | the "processing complete" output when creating machine readable | |
1010 | output. Thanks to Cameron Paine (cbp at null dot net) for the | |
1011 | patch. | |
1012 | [ISC-Bugs #42113] | |
1013 | ||
1014 | - When reusing a lease for dhcp-cache-threshold return the hostname | |
1015 | to the original lease. Also if the host pointer, UID or hardware address | |
1016 | change don't allow reuse of the lease. | |
1017 | Thanks to Michael Vincent for reporting this and helping us | |
1018 | verify the problem and fix. | |
1019 | [ISC-Bugs #42849] | |
1020 | ||
1021 | - Change dmalloc to use a size_t as the length argument to bring it | |
1022 | in line with the call it will make to malloc(). | |
1023 | [ISC-Bugs #40843] | |
1024 | ||
1025 | - If the failover socket can't be bound, close it. Otherwise if the | |
1026 | user configures an incorrect address in the failover stanza the | |
1027 | server will continue to open new sockets every 90 seconds until | |
1028 | it runs out. | |
1029 | [ISC-Bugs #42452] | |
1030 | ||
1031 | - Add DHCPv4-mode, dhcrelay command line options, "-iu" and "-id", that | |
1032 | allow interfaces to be upstream or downstream respectively. Upstream | |
1033 | interfaces will accept and forward only BOOTP replies, while downstream | |
1034 | interfaces will accept and forward only BOOTP requests. | |
1035 | [ISC-Bugs #41547] | |
1036 | ||
1037 | - Clean up some memory references in the vendor-class construct. | |
1038 | [ISC-Bugs #42984] | |
1039 | ||
1040 | - Removed an extraneous expression in omapi socket callback function. Prior | |
1041 | to this change, the logic was techinically incorrect but other factors | |
1042 | ensured the outcome itself was correct. This change was made primarily | |
1043 | for code clarity. Thanks to Ganesh Pinjala for bringing the issue to our | |
1044 | attention. | |
1045 | [ISC-Bugs #42834] | |
1046 | ||
1047 | - Corrected a bug which could cause the server to sporadically crash while | |
1048 | loading lease files with the lease-id-format is set to "hex". Our thanks | |
1049 | to Jay Ford, University of Iowa for reporting the issue. | |
1050 | [ISC-Bugs #43185] | |
1051 | ||
1052 | - Eliminated a noisy, but otherwise harmless debug log statment that may | |
1053 | appear during server startup when building with --enable-binary-leases | |
1054 | and configuring multiple pools in a shared network. Thanks to Fernando | |
1055 | Soto from BlueCat Networks for reporting the issue and supplying a patch. | |
1056 | [ISC-Bugs #43262] | |
1057 | ||
1058 | - The configure script for use with libtool now catches a failure to | |
1059 | execute autoreconf. Prior to this, autoreconf failures would go undetected | |
1060 | causing the legacy configure script to loop when run with --enable-libtool. | |
1061 | [ISC-Bugs #43546] | |
1062 | ||
1063 | - When replying to a DHCPINFORM, the server will now include options specified | |
1064 | at the pool scope, provided the ciaddr field of the DHCPINFORM is populated. | |
1065 | Prior to this the server only evaluated options down to the subnet scope. | |
1066 | Thanks to Fernando Soto at BlueCat Networks for reporting the issue. | |
1067 | [ISC-Bugs #43219] | |
1068 | [ISC-Bugs #45051] | |
1069 | ||
1070 | - When memory allocation fails in a repeated way the process writes | |
1071 | "Run out of memory." on the standard error and exists with status 1. | |
1072 | [ISC-Bugs #32744] | |
1073 | ||
1074 | - The new lmdb (Lightning Memory DataBase) bind9 configure option is | |
1075 | now disabled by default to avoid the presence of this library to be | |
1076 | detected which can lead to a link failure. | |
1077 | [ISC-Bugs #45069] | |
1078 | ||
1079 | - The linux interface discovery code has been modified to use getifaddrs() | |
1080 | as is done for BSD and OS-X. Prior to this the code would only recognize | |
1081 | the first address on an interface and thereby omit vlans. | |
1082 | Thanks to Jiri Popelka at Redhat, Marius Tomaschewski at SUSE, and Wei | |
1083 | Kong at Novell, who all submitted patches. | |
1084 | [ISC-Bugs #28761] | |
1085 | [ISC-Bugs #31992] | |
1086 | [ISC-Bugs #25428] | |
1087 | [ISC-Bugs #31940] | |
1088 | [ISC-Bugs #32935] | |
1089 | ||
1090 | - Fixed a bug in OMAPI that causes omshell to crash when a name-value | |
1091 | pair with a zero length value is shipped in an object. Thanks to | |
1092 | Fernando Soto at BlueCat Networks for reporting the issue and | |
1093 | supplying the patch. | |
1094 | [ISC-Bugs #29108] | |
1095 | ||
1096 | - On 64-bit platforms, dhclient now generates the correct value for the | |
1097 | script environment variable, "expiry", the lease expiry value exceeds | |
1098 | 0x7FFFFFFF. Prior to this such values would produce negative values | |
1099 | for expiry in the script environment. | |
1100 | [ISC-Bugs #43326] | |
1101 | ||
1102 | - Common timer logic was modified to cap the maximum timeout values at | |
1103 | 0x7FFFFFFF - 1. Values larger than that were causing fatal timer out of | |
1104 | range errors on 64-bit platforms. Thanks to Jiri Popelka at Red Hat for | |
1105 | reporting the issue. | |
1106 | [ISC-Bugs #28038] | |
1107 | ||
1108 | - DHCP6 FQDN option unpacking code now correctly handles values that contain | |
1109 | spaces, special, or non-printable characters. Prior to this the buffer | |
1110 | size needed was underestimated causing a conversion error message to | |
1111 | be logged and DNS updates to be skipped. Thanks to Fernando Soto at | |
1112 | BlueCat Networks for bringing the matter to our attention. | |
1113 | [ISC-Bugs #43592] | |
1114 | ||
1115 | - When running in -6 mode, dhclient now enforces the require option statement | |
1116 | and will discard offered leases that do not contain all the required | |
1117 | options specified in the client configuration. Prior to this the client | |
1118 | would still consider such leases. This may be disabled at compile time | |
1119 | (see ENFORCE_DHCPV6_CLIENT_REQUIRE in includes/site.h). Thanks to | |
1120 | Mritunjaykumar Dubey at Nokia for reporting the issue. | |
1121 | [ISC-Bugs #41473] | |
1122 | ||
1123 | - Altered DHCPv4 lease time calculation to avoid roll over errors on 64-bit | |
1124 | OS systems when using -1 or large values for default-lease-time. Rollover | |
1125 | values will be replaced with 0x7FFFFFFF - 1. This alleviates unintentionally | |
1126 | short expiration times being handed out when infinite lease times (-1) in | |
1127 | conjunction with failover. Our thanks to Alessandro Gherardi for bringing | |
1128 | the issue to our attention. | |
1129 | [ISC-Bugs #41976] | |
1130 | ||
1131 | - The server nows checks both the address and length of a prefix delegation | |
1132 | when attempting to match it to a prefix pool. This ensures the server | |
1133 | responds properly when pool configurations change such that once valid, | |
1134 | "in-pool" delegations are now treated as being invalid. During lease | |
1135 | file loading at startup, the server will discard any PD leases that | |
1136 | are deemed "out-of-pool" either by address or mis-matched prefix length. | |
1137 | Clients seeking to renew or rebind such leases will get a response of | |
1138 | No Binding in the case of the former, and the prefix delegation with | |
1139 | lifetimes set to zero in the case of the latter. Thanks to Mark Nejedlo | |
1140 | at TDS Telecom for reporting this issue. | |
1141 | [ISC-Bugs #35378] | |
1142 | ||
1143 | - The server now detects failover peers that are not referenced in at least | |
1144 | one pool when run with the command line option for test mode, -T. Prior to | |
1145 | this the check was performed too far down stream to be detected in test mode. | |
1146 | [ISC-Bugs #29892] | |
1147 | ||
1148 | - Changed severity of the log message indicating UDP checksum errors in | |
1149 | the received packets from 'info' to 'debug' to avoid logging excessive | |
1150 | number of false positives when UDP checksum offloading is enabled. | |
1151 | [ISC-bugs #41757] | |
1152 | ||
1153 | - Replaced ifconfig parameters "add" and "delete" with "alias" and "-alias" | |
1154 | for IPv6 mode in the client scripts, netbsd and openbsd. This was | |
1155 | preventing IPv6 addresses from being added or removed from interfaces. | |
1156 | Thanks to Tim Dean for reporting this issue. | |
1157 | [ISC-bugs #31573] | |
1158 | ||
1159 | - Corrected an issue where the server would return a client's previously | |
1160 | released prefix lease even when the client provides a prefix length | |
1161 | hint that does not match the prior lease. Now the server will only | |
1162 | return the previous lease if it exactly matches the hint. If not | |
1163 | it will attempt to allocate a new prefix based on the hint and the | |
1164 | prefix-length-mode. Thanks to Tim DeNike - Lightspeed Communications | |
1165 | for pointing out the error of our ways. | |
1166 | [ISC-bugs #45780] | |
1167 | ||
1168 | - Added explicit include of BIND9 isc/util.h to adapt to revisisions | |
1169 | in BIND9 (see BIND9 ticket #46311). Prior to this the build was failing | |
1170 | with implicit function declarations errors for POST() and INSIST(). | |
1171 | [ISC-bugs #46332] | |
1172 | ||
1173 | - Added to code ignore empty IPv4 host name option (code 12). While RFC 2132 | |
1174 | states the option cannot be empty, some clients are apparently capable of | |
1175 | sending it. Prior to this the server was attempting to use it and store it | |
1176 | in the lease file causing issues with DDNS and so forth. | |
1177 | [ISC-bugs #43786] | |
1178 | ||
1179 | Changes since 4.2.0 (new features) | |
1180 | ||
1181 | - If a client renews before 'dhcp-cache-threshold' percent of its lease | |
1182 | has elapsed (default 25%), the server will reuse the allocated lease | |
1183 | (provide a lease within the currently allocated lease-time) rather | |
1184 | than extend or renew the lease. This absolves the server of needing | |
1185 | to perform an fsync() operation on the lease database before reply, | |
1186 | which improves performance. [ISC-Bugs #22228] | |
1187 | Updated this patch to support asynchronous DDNS. If the server is | |
1188 | attempting to do DDNS on a lease it should be updated and written to | |
1189 | disk even if that wouldn't be necessary due to the thresholding. | |
1190 | [ISC-Bugs #26311] | |
1191 | ||
1192 | - The 'no available billing' log line now also logs the name of the last | |
1193 | matching billing class tried before failing to provide a billing. | |
1194 | [ISC-Bugs #21759] | |
1195 | ||
1196 | - A problem with missing get_hw_addr function when --enable-use-sockets | |
1197 | was used is now solved on GNU/Linux, BSD and GNU/Hurd systems. Note | |
1198 | that use-sockets feature was not tested on those systems. Client and | |
1199 | server code no longer use MAX_PATH constant that is not defined on | |
1200 | GNU/Hurd systems. [ISC-Bugs #25979] | |
1201 | ||
1202 | - Add a perl script in the contrib directory, dhcp-lease-list.pl, which | |
1203 | can parse v4 lease files and output the lease information in a more | |
1204 | human friendly manner. This was written by Christian Hammers with | |
1205 | some updates by vom and ISC. This is contributed code and is not | |
1206 | supported by ISC; however it may be useful to some users. | |
1207 | [ISC-Bugs #20680] | |
1208 | ||
1209 | - Add support in v6 for on-commit, on-expire and on-release. | |
1210 | [ISC-Bugs #27912] | |
1211 | ||
1212 | - Add support for using classes with v6. | |
1213 | [ISC-Bugs #26510] | |
1214 | ||
1215 | - Update the DDNS code to current standards and allow for sharing | |
1216 | of DDNS entries between v4 and v6 clients. The new code is used | |
1217 | if the ddns-update-style is set to "standard", the older code is | |
1218 | still available if ddns-update-style is set to "interim". The | |
1219 | oldest DDNS code "ad-hoc" has been removed. Thanks to Thomas Pegeot | |
1220 | who submitted a patch for this issue. This patch is based on | |
1221 | that work with some modifications. | |
1222 | [ISC-Bugs #21139] | |
1223 | ||
1224 | - Add a configuration option to the server to suppress using fsync(). | |
1225 | Enabling this option will mean that fsync() is never called. This | |
1226 | may provide better performance but there is also a risk that a lease | |
1227 | will not be properly written to the disk after it has been issued | |
1228 | to a client and before the server stops. Using this option is | |
1229 | not recommended. | |
1230 | [ISC-Bugs #34810] | |
1231 | ||
1232 | - Add some logging statements to indicate when the server is ready | |
1233 | to serve. One statement is emitted after the server has finished | |
1234 | reading its files and is about to enter the dispatch loop. | |
1235 | This is "Server starting service.". | |
1236 | The second is emitted when a server determines that both it and | |
1237 | its failover peer are in the normal state. | |
1238 | This is "failover peer <name>: Both servers normal." | |
1239 | [ISC-Bugs #33208] | |
1240 | ||
1241 | - Add support for accessing options from v6 relays. The v6relay | |
1242 | statement allows the administrator to choose which relay to | |
1243 | use when searching for an option, see the dhcp-options man page | |
1244 | for a description. The host-identifier option has also been | |
1245 | updated to support the use of relay options, see the dhcpd.conf | |
1246 | man page for a description. | |
1247 | [ISC-Bugs #19598] | |
1248 | ||
1249 | - When doing DDNS if there isn't an appropriate zone statement attempt | |
1250 | to find a reasonable nameserver via a DNS resolver. This restores | |
1251 | some functionality that was lost in the transition to asynchronous | |
1252 | DDNS. Due to the lack of security and increase in fragility of the | |
1253 | system when using this feature we strongly recommend the use of | |
1254 | appropriate zone statements rather than using this functionality. | |
1255 | [ISC-Bugs #30461] | |
1256 | ||
1257 | - Add support for specifying the address from which to send | |
1258 | DDNS updates on the DHCP server. There are two new options | |
1259 | "ddns-local-address4" and "ddns-local-address6" that each take | |
1260 | one instance of their respective address types. | |
1261 | [ISC-Bugs #34779] | |
1262 | ||
1263 | - Add ignore-client-uids option in the server. This option causes | |
1264 | the server to not record a client's uid in its lease. This | |
1265 | violates the specification but may also be useful when a client | |
1266 | can dual boot using different client ids but the same mac address. | |
1267 | Thank you to Brian De Wolf at Cal Poly Pomona for the patch. | |
1268 | [ISC-Bugs #32427] | |
1269 | [ISC-Bugs #35066] | |
1270 | ||
1271 | - Extend the DHCPINFORM processing to honor the subnet selection option | |
1272 | and take host declarations into account. | |
1273 | Thanks to Christof Chen for testing and submitting the patch. | |
1274 | [ISC-Bugs #35015] | |
1275 | ||
1276 | - Extend the hardware expression to look into the lease structure | |
1277 | for a hardware address if there is no packet. This allows the | |
1278 | server to find the hardware address during on-expiry processing. | |
1279 | [ISC-Bugs #24584] | |
1280 | ||
1281 | - Add definitions for some options that have been specified by the IETF. | |
1282 | [ISC-Bugs #29268] | |
1283 | [ISC-Bugs #35198] | |
1284 | ||
1285 | Changes since 4.2.0 (bug fixes) | |
1286 | ||
1287 | - When using 'ignore client-updates;', the FQDN returned to the client | |
1288 | is no longer truncated to one octet. | |
1289 | ||
1290 | - Cleaned up an unused hardware address variable in nak_lease(). | |
1291 | ||
1292 | - Manpage entries for the ia-pd and ia-prefix options were updated to | |
1293 | reflect support for prefix delegation. | |
1294 | ||
1295 | - Cleaned up some compiler warnings | |
1296 | ||
1297 | - An optimization described in the failover protocol draft is now included, | |
1298 | which permits a DHCP server operating in communications-interrupted state | |
1299 | to 'rewind' a lease to the state most recently transmitted to its peer, | |
1300 | greatly increasing a server's endurance in communications-interrupted. | |
1301 | This is supported using a new 'rewind state' record on the dhcpd.leases | |
1302 | entry for each lease. | |
1303 | ||
1304 | - Fix the trace code which was broken by the changes to the DDNS code. | |
1305 | ||
1306 | - Update the fsync code to work with the changes to the DDNS code. It now | |
1307 | uses a timer instead of noticing if there are no more packets to process. | |
1308 | ||
1309 | - When constructing the DNS name structure from a text string append | |
1310 | the root to relative names. This satisfies a requirement in the DNS | |
1311 | library that names be absolute instead of relative and prevents DHCP | |
1312 | from crashing. [ISC-Bugs #21054] | |
1313 | ||
1314 | - "The LDAP Patch" that has been circulating for some time, written by | |
1315 | Brian Masney and S.Kalyanasundraram and maintained for application to | |
1316 | the DHCP-4 sources by David Cantrell has been included. Please be | |
1317 | advised that these sources were contributed, and do not yet meet the | |
1318 | high standards we place on production sources we include by default. | |
1319 | As a result, the LDAP features are only included by using a compile-time | |
1320 | option which defaults off, and if you enable it you do so under your | |
1321 | own recognizance. We will be improving this software over time. | |
1322 | [ISC-Bugs #17741] | |
1323 | ||
1324 | - Prohibit including lease time information in a response to a DHCP INFORM. | |
1325 | [ISC-Bugs #21092] | |
1326 | ||
1327 | ! Accept a client id of length 0 while hashing. Previously the server would | |
1328 | exit if it attempted to hash a zero length client id, providing attackers | |
1329 | with a simple denial of service attack. [ISC-Bugs #21253] | |
1330 | CERT: VU#541921 - CVE: CVE-2010-2156 | |
1331 | ||
1332 | - A memory leak in ddns processing was closed. [ISC-Bugs #21377] | |
1333 | ||
1334 | - Modify the exception handling for initial context creation. Previously | |
1335 | we would try and clean up before exiting. This could present problems | |
1336 | when the cleanup required part of the context that wasn't available. It | |
1337 | also didn't do much as we exited afterwards anyway. Now we simply log | |
1338 | the error and exit. [ISC-Bugs #21093] | |
1339 | ||
1340 | - A bug was fixed that could cause the DHCPv6 server to advertise/assign a | |
1341 | previously allocated (active) lease to a client that has changed subnets, | |
1342 | despite being on different shared networks. Dynamic prefixes specifically | |
1343 | allocated in shared networks also now are not offered if the client has | |
1344 | moved. [ISC-Bugs #21152] | |
1345 | ||
1346 | - Add some debugging output for use with the DDNS code. [ISC-Bugs #20916] | |
1347 | ||
1348 | - Fix the trace code to handle timing events better and to truncate a file | |
1349 | before using instead of overwriting it. [ISC-Bugs #20969] | |
1350 | ||
1351 | - Modify the determination of the default TTL to use for DDNS updates. | |
1352 | The user may still configure the ttl via ddns-ttl. The default for | |
1353 | both v4 and v6 is now 1/2 the (preferred) lease time with a limit. The | |
1354 | previous defaults (1/2 lease time without a limit for v4 and a default | |
1355 | value for v6) may be used by defining USE_OLD_DDNS_TTL in site.h | |
1356 | [ISC-Bugs #21126] | |
1357 | ||
1358 | - libisc/libdns is now brought up to version 9.7.1rc1. This corrects | |
1359 | three reported flaws in ISC DHCP; | |
1360 | ||
1361 | o DHCP processes (dhcpd, dhclient) fail to start if one of either the | |
1362 | IPv4 or IPv6 address families is not present. [ISC-Bugs #21122] | |
1363 | ||
1364 | o Assertion failure when attempting to cancel a previously running DDNS | |
1365 | update. [ISC-Bugs #21133] | |
1366 | ||
1367 | o Compilation failure of libisc/libdns due to the use of a flexible | |
1368 | array member. [ISC-Bugs #21316] | |
1369 | ||
1370 | - Add declaration for variable in debug code in alloc.c. [ISC-Bugs #21472] | |
1371 | ||
1372 | - Documentation cleanup covering multiple tickets | |
1373 | [ISC-Bugs #20265] [ISC-Bugs #20259] minor cleanup | |
1374 | [ISC-Bugs #20263] add text describing some default values | |
1375 | [ISC-Bugs #20193] single quotes at the start of a line indicate a control | |
1376 | line to nroff, escape them if we actually want a quote. | |
1377 | [ISC-Bugs #18916] sync the pointer to web pages amongst the different docs | |
1378 | ||
1379 | - 'get-host-names true;' now also works even if 'use-host-decl-names true;' | |
1380 | was also configured. The nature of this repair also fixes another | |
1381 | error; the host-name supplied by a client is no longer overridden by a | |
1382 | reverse lookup of the lease address. Thanks to a patch from Wilco Baan | |
1383 | Hofman supplied to us by the Debian package maintenance team. | |
1384 | [ISC-Bugs #21691] {Debian Bug#509445} | |
1385 | ||
1386 | - The .TH tag for the dhcp-options manpage was typo repaired | |
1387 | thanks to a report from jidanni and the Debian package maintenance | |
1388 | team. [ISC-Bugs #21676] {Debian Bug#563613} | |
1389 | ||
1390 | - More documentation changes - primarily to put the options in the dhclient | |
1391 | and dhcpd man pages into the standard form. Thanks in part to a patch | |
1392 | from David Cantrell at Red Hat. | |
1393 | [ISC-Bugs #20264] and parts of [ISC-Bugs #17744] dhclient.8 changes | |
1394 | ||
1395 | - Add code to clear the pointer to an object in an OMAPI handle when the | |
1396 | object is freed due to a dereference. [ISC-Bugs #21306] | |
1397 | ||
1398 | - Fixed a bug that leaks host record references onto lease structures, | |
1399 | causing the server to apply configuration intended for one host to any | |
1400 | other innocent clients that come along later. [ISC-Bugs #22018] | |
1401 | ||
1402 | - Minor code fixes | |
1403 | [ISC-Bugs #19566] When trying to find the zone for a name for ddns allow | |
1404 | the name to be at the apex of the zone. | |
1405 | [ISC-Bugs #19617] Restrict length of interface name read from command line | |
1406 | in dhcpd - based on a patch from David Cantrell at Red Hat. | |
1407 | [ISC-Bugs #20039] Correct some error messages in dhcpd.c | |
1408 | [ISC-Bugs #20070] Better range check on values when creating a DHCID. | |
1409 | [ISC-Bugs #20198] Avoid writing past the end of the field when adding | |
1410 | overly long file or server names to a packet and add a log message | |
1411 | if the configuration supplied overly long names for these fields. | |
1412 | Thanks to Martin Pala. | |
1413 | [ISC-Bugs #21497] Add a little more randomness to rng seed in client | |
1414 | thanks to a patch from Jeremiah Jinno. | |
1415 | ||
1416 | - Correct error handling in DLPI [ISC-Bugs #20378] | |
1417 | ||
1418 | - Remove __sun__ and __hpux__ typedefs in osdep.h as they are now being | |
1419 | checked in configure. [ISC-Bugs #20443] | |
1420 | ||
1421 | - Modify how the cmsg header is allocated the v6 send and received routines | |
1422 | to compile on more compilers. [ISC-Bugs #20524] | |
1423 | ||
1424 | - When parsing a domain name free the memory for the name after we are | |
1425 | done with it. [ISC-Bugs #20824] | |
1426 | ||
1427 | - Add an elapsed time option to the release message and refactor the | |
1428 | code to move most of the common code to a single routine. | |
1429 | [ISC-Bugs #21171]. | |
1430 | ||
1431 | - Two identical log messages for commit_leases() have been disambiguated. | |
1432 | [ISC-Bugs #18915] | |
1433 | ||
1434 | - Parse date strings more properly - the code now handles semi-colons in | |
1435 | date strings correctly. Thanks to a patch from Jiri Popelka at Red Hat. | |
1436 | [ISC-Bugs #21501, #20598] | |
1437 | ||
1438 | - Fixes to lease input and output. | |
1439 | [ISC-Bugs #20418] - Some systems don't support the "%s" argument to | |
1440 | strftime, paste together the same string using mktime instead. | |
1441 | [ISC-Bugs #19596] - When parsing iaid values accept printable | |
1442 | characters. | |
1443 | [ISC-Bugs #21585] - Always print time values in omshell as hex | |
1444 | instead of ascii if the values happen to be printable characters. | |
1445 | ||
1446 | - Minor changes for scripts, configure.ac and Makefiles | |
1447 | [ISC-Bugs #19147] Use domain-search instead of domain-name in manual and | |
1448 | example conf file. Thanks to a patch from David Cantrell | |
1449 | at Red Hat. | |
1450 | [ISC-Bugs #19761] Restore address when doing a rebind in DHCPv6 | |
1451 | [ISC-Bugs #19945] Properly close the quote on some arguments. | |
1452 | [ISC-Bugs #20952] Add 64 bit types to configure.ac | |
1453 | [ISC-Bugs #21308] Add "PATH=" to CLIENT_PATH environment variable | |
1454 | ||
1455 | - Update the code to parse dhcpv6 lease files to accept a semi-colon at | |
1456 | the end of the max-life and preferred-life clauses. In order to be | |
1457 | backwards compatible with older lease files not finding a semi-colon | |
1458 | is also accepted. [ISC-Bugs #22303]. | |
1459 | ||
1460 | ! Handle a relay forward message with an unspecified address in the | |
1461 | link address field. Previously such a message would cause the | |
1462 | server to crash. Thanks to a report from John Gibbins. [ISC-Bugs #21992] | |
1463 | CERT: VU#102047 CVE: CVE-2010-3611 | |
1464 | ||
1465 | - ./configure on longer searches for -lcrypto to explicitly link against. | |
1466 | This fixes a bug where 'dhclient' would have shared library dependencies | |
1467 | on '/usr/lib'. [ISC-Bugs #21967] | |
1468 | ||
1469 | - Handle pipe failures more gracefully. Some OSes pass a SIGPIPE | |
1470 | signal to a process and will kill the process if the signal isn't | |
1471 | caught. This patch adds code to turn off the SIGPIPE signal via | |
1472 | a setsockopt() call. The signal is already being ignored as part | |
1473 | of the ISC library. [ISC-Bugs #22269] | |
1474 | ||
1475 | - Restore printing of values in omshell to the style pre 21585. For | |
1476 | 21585 we changed the print routines to always display time values | |
1477 | as a hex list. This had a side effect of printing all data strings | |
1478 | as a hex list. We shall investigate other ways of displaying time | |
1479 | values more usefully. [ISC-Bugs #22626] | |
1480 | ||
1481 | ! Fix the handling of connection requests on the failover port. | |
1482 | Previously a connection request from a source that wasn't | |
1483 | listed as a failover peer would cause the server to become | |
1484 | non-responsive. Thanks to a report from Brad Bendily, brad@bendily.com. | |
1485 | [ISC-Bugs #22679] | |
1486 | CERT: VU#159528 CVE: CVE-2010-3616 | |
1487 | ||
1488 | - Don't pass the ISC_R_INPROGRESS status to the omapi signal handlers. | |
1489 | Passing it through to the handlers caused the omshell program to fail | |
1490 | to connect to the server. [ISC-Bugs #21839] | |
1491 | ||
1492 | - Fix the parenthesis in the code to process configuration statements | |
1493 | beginning with "auth". The previous arrangement caused | |
1494 | "auto-partner-down" to be processed incorrectly. [ISC-Bugs #21854] | |
1495 | ||
1496 | - Limit the timeout period allowed in the dispatch code to 2^^32-1 seconds. | |
1497 | Thanks to a report from Jiri Popelka at Red Hat. | |
1498 | [ISC-Bugs #22033], [Red Hat Bug #628258] | |
1499 | ||
1500 | - When processing the format flags for a given option consume the | |
1501 | flag indicating an optional value correctly. A symptom of this | |
1502 | bug was an infinite loop when trying to parse the slp-service-scope | |
1503 | option. Thanks to a patch from Marius Tomaschewski. | |
1504 | [ISC-Bugs #22055] | |
1505 | ||
1506 | - Disable the use of kqueue in the ISC library. This avoids a problem | |
1507 | between the fork and socket code that caused the dhcpd process to | |
1508 | use all available cpu if the program daemonized itself. | |
1509 | [ISC-Bugs #21911] | |
1510 | ||
1511 | ! When processing a request in the DHCPv6 server code that specifies | |
1512 | an address that is tagged as abandoned (meaning we received a | |
1513 | decline request for it previously) don't attempt to move it from | |
1514 | the inactive to active pool as doing so can result in the server | |
1515 | crashing on an assert failure. Also retag the lease as active | |
1516 | and reset its timeout value. | |
1517 | [ISC-Bugs #21921] | |
1518 | ||
1519 | - Removed the restriction on using IPv6 addresses in IPv4 mode. This | |
1520 | allows IPv4 options which contain IPv6 addresses to be specified. For | |
1521 | example the 6rd option can be specified and used like this: | |
1522 | [ISC-Bugs #23039] | |
1523 | ||
1524 | option 6rd code 212 = { integer 8, integer 8, | |
1525 | ip6-address, array of ip-address }; | |
1526 | option 6rd 16 10 2001:: 1.2.3.4, 5.6.7.8; | |
1527 | ||
1528 | - Handle some DDNS corner cases better. Maintain the DDNS transaction | |
1529 | information when updating a lease and cancel any existing transactions | |
1530 | when removing the ddns information. | |
1531 | [ISC-Bugs #23103] | |
1532 | ||
1533 | - Some fixes for LDAP | |
1534 | [ISC-Bugs #21783] - Include lber library when building ldap | |
1535 | [ISC-Bugs #22888] - Enable the ldap code when buidling common | |
1536 | The above fixes are from Jiri Popelka at Red Hat. | |
1537 | ||
1538 | - Modify the dlpi code to accept getmsg() returning a positive value. | |
1539 | [ISC-Bugs #22824] | |
1540 | ||
1541 | ! In dhclient check the data for some string options for | |
1542 | reasonableness before passing it along to the script that | |
1543 | interfaces with the OS. | |
1544 | [ISC-Bugs #23722] | |
1545 | CVE: CVE-2011-0997 | |
1546 | ||
1547 | - DHCPv6 server now responds properly if client asks for a prefix that | |
1548 | is already assigned to a different client. [ISC-Bugs #23948] | |
1549 | ||
1550 | - Add the option "--no-pid" to the client, relay and server code, | |
1551 | to disable writing a pid file. Add the option "-pf pidfile" | |
1552 | to the relay to allow the user to supply the pidfile name at | |
1553 | runtime. Add the "with-relay6-pid-file" option to configure | |
1554 | to allow the user to supply the pidfile name for the relay | |
1555 | in v6 mode at configure time. | |
1556 | [ISC-Bugs #23351] [ISC-Bugs #17541] | |
1557 | ||
1558 | - 'dhclient' no longer waits a random interval after first starting up to | |
1559 | begin in the INIT state. This conforms to RFC 2131, but elects not to | |
1560 | implement a 'SHOULD' direction in section 4.1. The goal of this change | |
1561 | is to start up faster. [ISC-Bugs #19660] | |
1562 | ||
1563 | - Added 'initial-delay' parameter that specifies maximum amount of time | |
1564 | before client goes to the INIT state. The default value is 0. In previous | |
1565 | versions of the code client could wait up to 5 seconds. The old behavior | |
1566 | may be restored by using 'initial-delay 5;' in the client config file. | |
1567 | [ISC-Bugs #19660] | |
1568 | ||
1569 | - ICMP ping-check should now sit closer to precisely the number of seconds | |
1570 | configured (or default 1), due to making use of the new microsecond | |
1571 | scale timer internally to dhcpd. This corrects a bug where the server | |
1572 | may immediately timeout an ICMP ping-check if it was made late in the | |
1573 | current second. [ISC-Bugs #19660] | |
1574 | ||
1575 | - The DHCP client will schedule renewal and rebinding events in | |
1576 | microseconds if the DHCP server provided a lease-time that would result | |
1577 | in sub-1-second timers. This corrects a bug where a 2-second or lower | |
1578 | lease-time would cause the DHCP client to enter an infinite loop by | |
1579 | scheduling renewal at zero seconds. [ISC-Bugs #19660] | |
1580 | ||
1581 | - Client lease records are recorded at most once every 15 seconds. This | |
1582 | keeps the client from filling the lease database disk quickly on very small | |
1583 | lease times. [ISC-Bugs #19660] | |
1584 | ||
1585 | - To defend against RFC 2131 non-compliant DHCP servers which fail to | |
1586 | advertise a lease-time (either mangled, or zero in value) the DHCP | |
1587 | client now adds the server to the reject list ACL and returns to INIT | |
1588 | state to hopefully find an RFC 2131 compliant server (or retry in INIT | |
1589 | forever). [ISC-Bugs #19660] | |
1590 | ||
1591 | - Parameters configured to evaluate from user defined function calls can | |
1592 | now be correctly written to dhcpd.leases (as on 'on events' or dynamic | |
1593 | host records inserted via OMAPI). [ISC-Bugs #22266] | |
1594 | ||
1595 | - If a 'next-server' parameter is configured in a dynamic host record via | |
1596 | OMAPI as a domain name, the syntax written to disk is now correctly parsed | |
1597 | upon restart. [ISC-Bugs #22266] | |
1598 | ||
1599 | - The DHCP server now responds to DHCPLEASEQUERY messages from agents using | |
1600 | IP addresses not covered by a subnet in configuration. Whether or not to | |
1601 | respond to such an agent is still governed by the 'allow leasequery;' | |
1602 | configuration parameter, in the case of an agent not covered by a configured | |
1603 | subnet the root configuration area is examined. Server now also returns | |
1604 | vendor-class-id option, if client sent it. [ISC-Bugs #21094] | |
1605 | ||
1606 | - Documentation fixes | |
1607 | [ISC-Bugs #17959] add text to AIX section describing how to have it send | |
1608 | responses to the all-ones address. | |
1609 | [ISC-Bugs #19615] update the includes in dhcpctl/dhcpctl.3 to be more correct | |
1610 | [ISC-Bugs #20676] update dhcpd.conf.5 to include the RFC numbers for DDNS | |
1611 | ||
1612 | - Relay no longer crashes, when DHCP packet is received over interface without | |
1613 | any IPv4 address assigned. Also extended logging message about discarding | |
1614 | packets with invalid hlen with information about relevant interface name. | |
1615 | [ISC-Bugs #22409] | |
1616 | ||
1617 | - Relay now properly logs that packet was received over interface without | |
1618 | global IPv6 address [ISC-Bugs #24070] | |
1619 | ||
1620 | - Linux Packet Filter interface improvement. sockaddr_pkt structure is used, | |
1621 | rather than sockaddr. Packet ethertype is now forced to ETH_P_IP. | |
1622 | [ISC-Bugs #18975] | |
1623 | ||
1624 | - Minor code cleanups - but note port change for #23196 | |
1625 | [ISC-Bugs #23470] - Modify when an ignore return macro is defined to | |
1626 | handle unsed error return warnings for more versions of gcc. | |
1627 | [ISC-Bugs #23196] - Modify the reply handling in the server code to | |
1628 | send to a specified port rather than to the source port for the incoming | |
1629 | message. Sending to the source port was test code that should have | |
1630 | been removed. The previous functionality may be restored by defining | |
1631 | REPLY_TO_SOURCE_PORT in the includes/site.h file. We suggest you don't | |
1632 | enable this except for testing purposes. | |
1633 | [ISC-Bugs #22695] - Close a file descriptor in an error path. | |
1634 | [ISC-Bugs #19368] - Tidy up variable types in validate_port. | |
1635 | ||
1636 | - Code cleanup: remove obsolete PROTO, KandR, INLINE and ANSI_DECL macros | |
1637 | [ISC-Bugs #13151] | |
1638 | ||
1639 | - Compilation problem with gcc4.5 and omshell.c resolved. [ISC-Bugs #23831] | |
1640 | ||
1641 | - Client Script fixes | |
1642 | [ISC-Bugs #23045] Typos in client/scripts/openbsd | |
1643 | [ISC-Bugs #23565] In the client scripts add a zone id (interface id) if | |
1644 | the domain search address is link local. | |
1645 | [ISC-Bugs #1277] In some of the client scripts add code to handle the | |
1646 | case of the default router information being changed without the address | |
1647 | being changed. | |
1648 | ||
1649 | - Documentation cleanup | |
1650 | [ISC-Bugs #23326] Updated References document, several man page updates | |
1651 | ||
1652 | - Server no longer complains about NULL pointer when configured | |
1653 | server-identifier expression fails to evaluate. [ISC-Bugs #24547] | |
1654 | ||
1655 | - Convert ISC_R_INPROGRESS status to ISC_R_SUCCESS when called from other | |
1656 | than the dispatch handler. This fixes an issue where omshell, when | |
1657 | run from the same platform as the server, would appear to fail to | |
1658 | connect. This is a companion to #21839. [ISC-Bugs #23592] | |
1659 | ||
1660 | - Enlarge the buffer size used by the Omshell code and some of the | |
1661 | print routines to allow for greater than 60 characters or, when | |
1662 | printing as hex strings, 20 characters. [ISC-Bugs #22743] | |
1663 | ||
1664 | - In Solaris 11 switch to using sockets instead of DLPI, thanks | |
1665 | to a patch form Oracle. [ISC-Bugs #24634]. | |
1666 | ||
1667 | - Strict checks for content of domain-name DHCPv4 option can now be | |
1668 | configured during compilation time. Even though RFC2132 does not allow | |
1669 | to store more than one domain in domain-name option, such behavior is | |
1670 | now enabled by default, but this may change some time in the future. | |
1671 | See ACCEPT_LIST_IN_DOMAIN_NAME define in includes/site.h. | |
1672 | [ISC-Bugs #24167] | |
1673 | ||
1674 | - DNS Update fix. A misconfigured server could crash during DNS update | |
1675 | processing if the configuration included overlapping pools or | |
1676 | multiple fixed-address entries for a single address. This issue | |
1677 | affected both IPv4 and IPv6. The fix allows a server to detect such | |
1678 | conditions, provides the user with extra information and recommended | |
1679 | steps to fix the problem. If the user enables the appropriate option | |
1680 | in site.h then server will be terminated | |
1681 | [ISC-Bugs #23595] | |
1682 | ||
1683 | ! Two packets were found that cause a server to halt. The code | |
1684 | has been updated to properly process or reject the packets as | |
1685 | appropriate. Thanks to David Zych at University of Illinois | |
1686 | for reporting this issue. [ISC-Bugs #24960] | |
1687 | One CVE number for each class of packet. | |
1688 | CVE-2011-2748 | |
1689 | CVE-2011-2749 | |
1690 | ||
1691 | - Fix the code that checks for an existing DDNS transaction to cancel | |
1692 | when removing DDNS information, so that we will continue with the | |
1693 | processing if we have a lease even if it doesn't have an outstanding | |
1694 | transaction. [ISC-Bugs #24682] | |
1695 | ||
1696 | - Add AM_MAINTAINER_MODE to configure.ac to avoid rebuilding | |
1697 | configuration files. [ISC-Bugs #24107] | |
1698 | ||
1699 | - Add support for passing DDNS information to a DNS server over | |
1700 | an IPv6 address. [ISC-Bugs #22647] | |
1701 | ||
1702 | - Enhanced patch for 23595 to handle IPv4 fixed addresses more | |
1703 | cleanly. [ISC-Bugs #23595] | |
1704 | ||
1705 | ! Add a check for a null pointer before calling the regexec function. | |
1706 | Without this check we could, under some circumstances, pass | |
1707 | a null pointer to the regexec function causing it to segfault. | |
1708 | Thanks to a report from BlueCat Networks. | |
1709 | [ISC-Bugs #26704]. | |
1710 | CVE: CVE-2011-4539 | |
1711 | ||
1712 | ! Modify the DDNS handling code. In a previous patch we added logging | |
1713 | code to the DDNS handling. This code included a bug that caused it | |
1714 | to attempt to dereference a NULL pointer and eventually segfault. | |
1715 | While reviewing the code as we addressed this problem, we determined | |
1716 | that some of the updates to the lease structures would not work as | |
1717 | planned since the structures being updated were in the process of | |
1718 | being freed: these updates were removed. In addition we removed an | |
1719 | incorrect call to the DDNS removal function that could cause a failure | |
1720 | during the removal of DDNS information from the DNS server. | |
1721 | Thanks to Jasper Jongmans for reporting this issue. | |
1722 | [ISC-Bugs #27078] | |
1723 | CVE: CVE-2011-4868 | |
1724 | ||
1725 | - Fixed the code that checks if an address the server is planning | |
1726 | to hand out is in a reserved range. This would appear as | |
1727 | the server being out of addresses in pools with particular ranges. | |
1728 | [ISC-Bugs #26498] | |
1729 | ||
1730 | - In the DDNS code handle error conditions more gracefully and add more | |
1731 | logging code. The major change is to handle unexpected cancel events | |
1732 | from the DNS client code. | |
1733 | [ISC-Bugs #26287] | |
1734 | ||
1735 | - Tidy up the receive calls and eliminate the need for found_pkt. | |
1736 | [ISC-Bugs #25066] | |
1737 | ||
1738 | - Add support for Infiniband over sockets to the server and | |
1739 | relay code. We've tested this on Solaris and hope to expand | |
1740 | support for Infiniband in the future. This patch also corrects | |
1741 | some issues we found in the socket code. | |
1742 | [ISC-Bugs #24245] | |
1743 | ||
1744 | - Add a compile time check for the presence of the noreturn attribute | |
1745 | and use it for log_fatal if it's available. This will help code | |
1746 | checking programs to eliminate false positives. | |
1747 | [ISC-Bugs #27539] | |
1748 | ||
1749 | - Fixed many compilation problems ("set, but not used" warnings) for | |
1750 | gcc 4.6 that may affect Ubuntu 11.10 users. [ISC-Bugs #27588] | |
1751 | ||
1752 | - Modify the code that determines if an outstanding DDNS request | |
1753 | should be cancelled. This patch results in cancelling the | |
1754 | outstanding request less often. It fixes the problem caused | |
1755 | by a client doing a release where the TXT and PTR records | |
1756 | weren't removed from the DNS. | |
1757 | [ISC-BUGS #27858] | |
1758 | ||
1759 | - Use offsetof() instead of sizeof() to get the sizes for dhcpv6_relay_packet | |
1760 | and dhcpv6_packet in several more places. Thanks to a report from | |
1761 | Bruno Verstuyft and Vincent Demaertelaere of Excentis. | |
1762 | [ISC-Bugs #27941] | |
1763 | ||
1764 | - Remove outdated note in the description of the bootp keyword about the | |
1765 | option not satisfying the requirement of failover peers for denying | |
1766 | dynamic bootp clients. | |
1767 | [ISC-bugs #28574] | |
1768 | ||
1769 | - Multiple items to clean up IPv6 address processing. | |
1770 | When processing an IA that we've seen check to see if the | |
1771 | addresses are usable (not in use by somebody else) before | |
1772 | handing it out. | |
1773 | When reading in leases from the file discard expired addresses. | |
1774 | When picking an address for a client include the IA ID in | |
1775 | addition to the client ID to generally pick different addresses | |
1776 | for different IAs. | |
1777 | [ISC-Bugs #23138] [ISC-Bugs #27945] [ISC-Bugs #25586] | |
1778 | [ISC-Bugs #27684] | |
1779 | ||
1780 | - Remove unnecessary checks in the lease query code and clean up | |
1781 | several compiler issues (some dereferences of NULL and treating | |
1782 | an int as a boolean). | |
1783 | [ISC-Bugs #26203] | |
1784 | ||
1785 | - Fix the NA and PD allocation code to handle the case where a client | |
1786 | provides a preference and the server doesn't have any addresses or | |
1787 | prefixes available. Previously the server ignored the request with | |
1788 | this patch it replies with a NoAddrsAvail or NoPrefixAvail response. | |
1789 | By default the code performs according to the errata of August 2010 | |
1790 | for RFC 3315 section 17.2.2; to enable the previous style see the | |
1791 | section on RFC3315_PRE_ERRATA_2010_08 in includes/site.h. This option | |
1792 | may be removed in the future. | |
1793 | Thanks to Jiri Popelka at Red Hat for the patch. | |
1794 | [ISC-Bugs #22676] | |
1795 | ||
1796 | - Fix up some issues found by static analysis. | |
1797 | A potential memory leak and NULL dereference in omapi. | |
1798 | The use of a boolean test instead of a bitwise test in dst. | |
1799 | [ISC-Bugs #28941] | |
1800 | ||
1801 | - Rotate the lease file when running in v6 mode. | |
1802 | Thanks to Christoph Moench-Tegeder at Astaro for the | |
1803 | report and the first version of the patch. | |
1804 | [ISC-Bugs #24887] | |
1805 | ||
1806 | - Correct code to calculate timing values in client to compare | |
1807 | rebind value to infinity instead of renew value. | |
1808 | Thanks to Chenda Huang from H3C Technologies Co., Limited | |
1809 | for reporting this issue. | |
1810 | [ISC-Bugs #29062] | |
1811 | ||
1812 | - Fix some issues in the code for parsing and printing options. | |
1813 | [ISC-Bugs #22625] - properly print options that have several fields | |
1814 | followed by an array of something for example "fIa" | |
1815 | [ISC-Bugs #27289] - properly parse options in declarations that have | |
1816 | several fields followed by an array of something for example "fIa" | |
1817 | [ISC-Bugs #27296] - properly determine if we parsed a 16 or 32 bit | |
1818 | value in evaluate_numeric_expression (extract-int). | |
1819 | [ISC-Bugs #27314] - properly parse a zero length option from | |
1820 | a lease file. Thanks to Marius Tomaschewski from SUSE for the report | |
1821 | and prototype patch for this ticket as well as ticket 27289. | |
1822 | ||
1823 | ! Previously the server code was relaxed to allow packets with zero | |
1824 | length client ids to be processed. Under some situations use of | |
1825 | zero length client ids can cause the server to go into an infinite | |
1826 | loop. As such ids are not valid according to RFC 2132 section 9.14 | |
1827 | the server no longer accepts them. Client ids with a length of 1 | |
1828 | are also invalid but the server still accepts them in order to | |
1829 | minimize disruption. The restriction will likely be tightened in | |
1830 | the future to disallow ids with a length of 1. | |
1831 | Thanks to Markus Hietava of Codenomicon CROSS project for the | |
1832 | finding this issue and CERT-FI for vulnerability coordination. | |
1833 | [ISC-Bugs #29851] | |
1834 | CVE: CVE-2012-3571 | |
1835 | ||
1836 | ! When attempting to convert a DUID from a client id option | |
1837 | into a hardware address handle unexpected client ids properly. | |
1838 | Thanks to Markus Hietava of Codenomicon CROSS project for the | |
1839 | finding this issue and CERT-FI for vulnerability coordination. | |
1840 | [ISC-Bugs #29852] | |
1841 | CVE: CVE-2012-3570 | |
1842 | ||
1843 | ! A pair of memory leaks were found and fixed. Thanks to | |
1844 | Glen Eustace of Massey University, New Zealand for finding | |
1845 | this issue. | |
1846 | [ISC-Bugs #30024] | |
1847 | CVE: CVE-2012-3954 | |
1848 | ||
1849 | - Existing legacy unit-tests have been migrated to Automated Test | |
1850 | Framework (ATF). Several new tests have been developed. To enable | |
1851 | unit-tests, please use --with-atf in configure script. A Developer's | |
1852 | Guide has been added. To generate it, please use make devel in | |
1853 | the doc directory. It is currently in early stages of development, | |
1854 | but is expected to grow in the near future. [ISC-Bugs 25901] | |
1855 | ||
1856 | ! An issue with the use of lease times was found and fixed. Making | |
1857 | certain changes to the end time of an IPv6 lease could cause the | |
1858 | server to abort. Thanks to Glen Eustace of Massey University, | |
1859 | New Zealand for finding this issue. | |
1860 | [ISC-Bugs #30281] | |
1861 | CVE: CVE-2012-3955 | |
1862 | ||
1863 | - Update the memory leakage debug code to work with v6. | |
1864 | [ISC-Bugs #30297] | |
1865 | ||
1866 | - Relax the requirements for deleting an A or AAAA record. | |
1867 | Previously the DDNS removal code required both the A or AAAA | |
1868 | record and the TXT record to exist. This requirement could | |
1869 | cause problems if something interrupted the removal leaving | |
1870 | the TXT record alone. This relaxation was codified in RFC 4703. | |
1871 | [ISC-Bugs #30734] | |
1872 | ||
1873 | - Modify the failover code to handle incorrect peer names | |
1874 | better. Previously the structure holding the name might | |
1875 | have been freed inappropriately in some cases and not | |
1876 | freed in other cases. | |
1877 | [ISC-Bugs #30320] | |
1878 | ||
1879 | - Add a configure option, enable-secs-byteorder, to deal with | |
1880 | clients that do the byte ordering on the secs field incorrectly. | |
1881 | This field should be in network byte order but some clients | |
1882 | get it wrong. When this option is enabled the server will examine | |
1883 | the secs field and if it looks wrong (high byte non zero and low | |
1884 | byte zero) swap the bytes. The default is disabled. This option | |
1885 | is only useful when doing load balancing within failover. | |
1886 | [ISC-Bugs #26108] | |
1887 | ||
1888 | - Fix a set of issues that were discovered via a code inspection | |
1889 | tool. Thanks to Jiri Popelka and Tomas Hozza Red Hat for the logs | |
1890 | and patches. | |
1891 | [ISC-Bugs #23833] | |
1892 | ||
1893 | - Parsing unquoted base64 strings improved. Parser now properly handles | |
1894 | strings that contain reserved names. [ISC-Bugs #23048] | |
1895 | ||
1896 | - Modify the nak_lease function to make some attempts to find a | |
1897 | server-identifier option to use for the NAK. | |
1898 | [ISC-Bugs #25689] | |
1899 | ||
1900 | - The client now passes information about the options it requested | |
1901 | from the server to the script code via environment variables. | |
1902 | These variables are of the form requested_<option_name>=1 with | |
1903 | the option name being the same as used in the new_* and old_* | |
1904 | variables. | |
1905 | [ISC-Bugs #29068] | |
1906 | ||
1907 | - Add support for a simple check that the server id in a request message | |
1908 | to a failover peer matches the server id of the server. This support | |
1909 | is enabled by editing the file includes/site.h and uncommenting the | |
1910 | definition for SERVER_ID_CHECK. The option has several restrictions | |
1911 | and issues - please read the comment in the site.h file before | |
1912 | enabling it. | |
1913 | [ISC-Bugs #31463] | |
1914 | ||
1915 | - Tidy up some compiler issues in the debug code. | |
1916 | [ISC-Bugs #26460] | |
1917 | ||
1918 | - Move the dhcpd.conf example file to dhcpd.conf.example to avoid | |
1919 | overwriting the dhcpd.conf file when installing a new version of | |
1920 | ISC DHCP. The user will now need to manual copy and edit the | |
1921 | dhcpd.conf file as desired. | |
1922 | [ISC-Bugs #19337] | |
1923 | ||
1924 | - Check the status value when trying to read from a connection to | |
1925 | see if it may have been closed. If it appears closed don't try | |
1926 | to read from it again. This avoids a potential busy-wait like | |
1927 | loop when the peer names are mismatched. | |
1928 | [ISC-Bugs #31231] | |
1929 | ||
1930 | - Remove an unused variable to keep compilers happy. | |
1931 | [ISC-Bugs #31983] | |
1932 | ||
1933 | - Modify test makefiles to be more similar to standard makefiles | |
1934 | and comment out a currently unused test. | |
1935 | [ISC-Bugs #32089] | |
1936 | ||
1937 | - Address static analysis warnings. | |
1938 | [ISC-Bugs #33510] [ISC-Bugs #33511] | |
1939 | ||
1940 | - Silence benign static analysis warnings. | |
1941 | [ISC-Bugs #33428] | |
1942 | ||
1943 | - Add check for 64-bit package for atf. | |
1944 | [ISC-Bugs #32206] | |
1945 | ||
1946 | - Use newer auto* tool packages and turn on RFC_3542 support on Mac OS. | |
1947 | [ISC-Bugs #26303] | |
1948 | ||
1949 | - Remove a variable when it isn't being used due to #ifdefs to avoid | |
1950 | a compiler warning on Solaris using GCC. | |
1951 | [ISC-Bugs #33032] | |
1952 | ||
1953 | - Add a check for too much whitespace in a config or lease file. | |
1954 | Thanks to Paolo Pellegrino for finding the issue and a suggestion | |
1955 | for the patch. | |
1956 | [ISC-Bugs #33351] | |
1957 | ||
1958 | - Fix several problems with using OMAPI to manipulate class and subclass | |
1959 | objects. | |
1960 | [ISC-Bugs #27452] | |
1961 | ||
1962 | - Added a sleep call after killing the old client to allow time | |
1963 | for the sockets to be cleaned. This should allow the -r option | |
1964 | to work more consistently. | |
1965 | [ISC-Bugs #18175] | |
1966 | ||
1967 | - Missing files for ISC DHCP Developer's Guide are now included in | |
1968 | the release tarballs. To generate this documentation, please use | |
1969 | make devel command in doc directory. [ISC-Bugs #32767] | |
1970 | ||
1971 | - Update client script for use with openwrt. | |
1972 | [ISC-Bugs #29843] | |
1973 | ||
1974 | - Fix the socket handling for DHCPv6 clients to allow multiple instances | |
1975 | of a client on a single machine to work properly. Previously only | |
1976 | one client would receive the packets. Thanks to Jiri Popelka at Red Hat | |
1977 | for the bug report and a potential patch. | |
1978 | [ISC-Bugs #34784] | |
1979 | ||
1980 | - Added support for gentle shutdown after signal is received. | |
1981 | [ISC-Bugs #32692] [ISC-Bugs 34945] | |
1982 | ||
1983 | - Enhance the DHCPv6 server logging to include the addresses that are assigned | |
1984 | to the clients. | |
1985 | [ISC-Bugs #26377] | |
1986 | ||
1987 | - Fix an operation in the DDNS code to be a bitwise instead of logical or. | |
1988 | [ISC-Bugs #35138] | |
1989 | ||
1990 | ||
1991 | Changes since 4.1.0 (new features) | |
1992 | ||
1993 | - Failover port configuration can now be left to defaults (port 647) as | |
1994 | described in the -12 revision of the Failover draft (and assigned by | |
1995 | IANA). Thanks in part to a patch from David Cantrell at Red Hat. | |
1996 | ||
1997 | - If configured, dhclient may now transmit to an anycast MAC address, | |
1998 | rather than using a broadcast address. Thanks to a patch from David | |
1999 | Cantrell at Red Hat. | |
2000 | ||
2001 | - Added client support for setting interface MTU and metric, thanks to | |
2002 | Roy "UberLord" Marples <roy@marples.name>. | |
2003 | ||
2004 | - Added client -D option to specify DUID type to send. | |
2005 | ||
2006 | - A new failover configuration parameter has been introduced for those | |
2007 | environments where DHCP servers can be reasonably guaranteed to be | |
2008 | "down" when the failover TCP socket is severed, "auto-partner-down". | |
2009 | This parameter is not generally safe, and by default is disabled, so | |
2010 | please carefully review the documentation of this parameter in the | |
2011 | dhcpd.conf(5) manpage before determining to use it yourself. | |
2012 | ||
2013 | - Added a configuration function, 'gethostname()', which calls the system | |
2014 | function of the same name and presents the results as a data expression. | |
2015 | This function can be used to incorporate the system level hostname of | |
2016 | the system the DHCP software is operating on in responses or queries (such | |
2017 | as including a failover partner's hostname in a dhcp message or binding | |
2018 | scope, or having a DHCP client send any system hostname in the host-name or | |
2019 | FQDN options by default). | |
2020 | ||
2021 | - The dhcp-renewal-time and dhcp-rebinding-time options may now be configured | |
2022 | for DHCPv4 operation and used independently of the dhcp-lease-time | |
2023 | calculations. Invalid renew and rebinding times (e.g., greater than the | |
2024 | determined lease time) are omitted. | |
2025 | ||
2026 | - Processing the DHCP to DNS server transactions in an asynchronous fashion, | |
2027 | the DHCP server or client can now continue with its processing while | |
2028 | awaiting replies from the DNS server. | |
2029 | ||
2030 | - The 'hardware [ethernet|etc] ...;' parameter in host records has been | |
2031 | extended to attempt to match DHCPv6 clients by the last octets of a | |
2032 | DUID-LL or DUID-LLT provided by the client. | |
2033 | ||
2034 | Changes since 4.1.0 (bug fixes) | |
2035 | ||
2036 | - Remove infinite loop in token_print_indent_concat(). | |
2037 | ||
2038 | - Validate the argument to the -p option. | |
2039 | ||
2040 | - The notorious 'option <unknown> ... larger than buffer' log line, | |
2041 | which is seen in some malformed DHCP client packets, was modified. | |
2042 | It now logs the universe name, and does not log the length values | |
2043 | (which are bogus corruption read from the packet anyway). It also | |
2044 | carries a hopefully more useful explanation. | |
2045 | ||
2046 | - Suppress spurious warnings from configure about --datarootdir | |
2047 | ||
2048 | - A bug was fixed that caused the server not to answer some valid Solicit | |
2049 | and Request packets, if the dynamic range covering any requested addresses | |
2050 | had been deleted from configuration. | |
2051 | ||
2052 | - Update the code to deal with GCC 4.3. This included two sets of changes. | |
2053 | The first is to the configuration files to include the use of | |
2054 | AC_USE_SYSTEM_EXTENSIONS. The second is to deal with return values that | |
2055 | were being ignored. | |
2056 | ||
2057 | - The db-time-format option was documented in manpages. | |
2058 | ||
2059 | - Using reserved leases no longer results in 'lease with binding state | |
2060 | free not on its queue' error messages, thanks to a patch from Frode | |
2061 | Nordahl. | |
2062 | ||
2063 | - Fix a build error in dhcrelay, using older versions of gcc with | |
2064 | dhcpv6 disabled. | |
2065 | ||
2066 | - Two uninitialized stack structures are now memset to zero, thanks to a | |
2067 | patch from David Cantrell at Red Hat. | |
2068 | ||
2069 | - Fixed a cosmetic bug where pretty-printing valid domain-search options would | |
2070 | result in an erroneous error log message ('garbage in format string'). | |
2071 | ||
2072 | - A bug in DLPI packet transmission (Solaris, HP/UX) that caused the server | |
2073 | to stop receiving packets is fixed. The same fix also means that the MAC | |
2074 | address will no longer appear 'bogus' on DLPI-based systems. | |
2075 | ||
2076 | - A bug in select handling was discovered where the results of one select() | |
2077 | call were discarded, causing the server to process the next select() call | |
2078 | and use more system calls than required. This has been repaired - the | |
2079 | sockets will be handled after the first return from select(), resulting in | |
2080 | fewer system calls. | |
2081 | ||
2082 | - The update-conflict-detection feature would leave an FQDN updated without | |
2083 | a DHCID (still currently implemented as a TXT RR). This would cause later | |
2084 | expiration or release events to fail to remove the domain name. The feature | |
2085 | now also inserts the client's up to date DHCID record, so records may safely | |
2086 | be removed at expiration or release time. Thanks to a patch submitted by | |
2087 | Christof Chen. | |
2088 | ||
2089 | - Memory leak in the load_balance_mine() function is fixed. This would | |
2090 | leak ~20-30 octets per DHCPDISCOVER packet while failover was in use | |
2091 | and in normal state. | |
2092 | ||
2093 | - Various compilation fixes have been included for the memory related | |
2094 | DEBUG #defines in includes/site.h. | |
2095 | ||
2096 | - Fixed Linux client script 'unary operator expected' errors with DHCPv6. | |
2097 | ||
2098 | - Fixed setting hostname in Linux hosts that require hostname argument | |
2099 | to be double-quoted. Also allow server-provided hostname to | |
2100 | override hostnames 'localhost' and '(none)'. | |
2101 | ||
2102 | - Fixed failover reconnection retry code to continue to retry to reconnect | |
2103 | rather than restarting the listener. | |
2104 | ||
2105 | - Compilation on Solaris with USE_SOCKETS defined in includes/site.h has | |
2106 | been repaired. Other USE_ overrides should work better. | |
2107 | ||
2108 | - A check for the local flavor of IFNAMSIZ had a broken 'else' condition, | |
2109 | that probably still resulted in the correct behaviour (but wouldn't use | |
2110 | a larger defined value provided by the host OS). | |
2111 | ||
2112 | - Fixed a bug where an OMAPI socket disconnection message would not result | |
2113 | in scheduling a failover reconnection, if the link had not negotiated a | |
2114 | failover connect yet (e.g.: connection refused, asynch socket connect() | |
2115 | timeouts). | |
2116 | ||
2117 | - A bug was fixed that caused the 'conflict-done' state to fail to be parsed | |
2118 | in failover state records. | |
2119 | ||
2120 | ! A stack overflow vulnerability was fixed in dhclient that could allow | |
2121 | remote attackers to execute arbitrary commands as root on the system, | |
2122 | or simply terminate the client, by providing an over-long subnet-mask | |
2123 | option. CERT VU#410676 - CVE-2009-0692 | |
2124 | ||
2125 | - Fixed a bug where relay agent options would never be returned when | |
2126 | processing a DHCPINFORM. | |
2127 | ||
2128 | - Versions 3.0.x syntax with multiple name->code option definitions is now | |
2129 | supported. Note that, similarly to 3.0.x, for by-code lookups only the | |
2130 | last option definition is used. | |
2131 | ||
2132 | - Fixed a bug where a time difference of greater than 60 seconds between a | |
2133 | failover pair could cause the primary to crash on contact with the | |
2134 | secondary. Thanks to a patch from Steinar Haug. | |
2135 | ||
2136 | - Don't look for IPv6 interfaces on Linux when running in DHCPv4 mode. | |
2137 | Thanks to patches from Matthew Newton and David Cantrell. | |
2138 | ||
2139 | - Secondary servers in a failover pair will now perform ddns removals if | |
2140 | they had performed ddns updates on a lease that is expiring, or was | |
2141 | released through the primary. As part of the same fix, stale binding scopes | |
2142 | will now be removed if a change in identity of a lease's active client is | |
2143 | detected, rather than simply if a lease is noticed to have expired (which it | |
2144 | may have expired without a failover server noticing in some situations). | |
2145 | ||
2146 | - A patch supplied by David Cantrell at RedHat was applied that detects | |
2147 | invalid calling parameters given to the ns_name_ntop() function. | |
2148 | Specifically, it detects if the caller passed a pointer and size pair | |
2149 | that causes the pointer to integer-wrap past zero. | |
2150 | ||
2151 | ! Fixed a fenceposting bug when a client had two host records configured, | |
2152 | one using 'uid' and the other using 'hardware ethernet'. CVE-2009-1892 | |
2153 | ||
2154 | - Fixed the check in the dhcp_interface_signal_handler routine to verify | |
2155 | the existence of the linked signal handler before calling it. | |
2156 | ||
2157 | - Both host and subnet6 configuration groups are now included whether a | |
2158 | fixed-address6 (DHCPv6) is in use or not. Host scoped configuration takes | |
2159 | precedence. This fixes two bugs, one where host scoped configuration | |
2160 | would not be included from a non-fixed-address6 host record, and the equal | |
2161 | and opposite bug where subnet6 scoped configuration would not be used when | |
2162 | over-riding values were not present in a matching fixed-address6 host | |
2163 | configuration. | |
2164 | ||
2165 | - ./configure now checks to ensure the intX_t and u_intX_t types are defined, | |
2166 | correcting a compilation failure when using Sun's compiler. | |
2167 | ||
2168 | - Modified the handling of a connection to avoid releasing the omapi io | |
2169 | object for the connection while it is still in use. One symptom from | |
2170 | this error was a segfault when a failover secondary attempted to connect | |
2171 | to the failover primary if their clocks were not synchronized. | |
2172 | ||
2173 | - Clean up to allow compilation with gcc 2.95.4 on FreeBSD. Remove an | |
2174 | extra semi-colon from common/dns.c and moved setting a variable to NULL | |
2175 | in server/dhcpv6.c to allow the compiler to decide that the variable | |
2176 | was always properly set. | |
2177 | ||
2178 | Changes since 4.1.0b1 | |
2179 | ||
2180 | - A missing "else" in dhcrelay.c could have caused an interface not to | |
2181 | be recognized. | |
2182 | ||
2183 | Changes since 4.1.0a2 | |
2184 | ||
2185 | - A cosmetic bug in DHCPDECLINE processing was fixed which caused all | |
2186 | successful DHCPDECLINEs to be logged as "not found" rather than | |
2187 | "abandoned". | |
2188 | ||
2189 | - Added configuration file examples for DHCPv6. | |
2190 | ||
2191 | - Some failover debugging #defines have been better defined and some | |
2192 | high frequency messages moved to a deeper debugging symbol. | |
2193 | ||
2194 | - The CLTT parameter in failover is now only updated by client activity, | |
2195 | and not by failover binding updates (taking on the peer's CLTT). | |
2196 | ||
2197 | - Failover BNDUPD messages are now discarded if they conflict with an | |
2198 | update that has been transmitted, but not acknowledged. | |
2199 | ||
2200 | - A bug cleaning up unknown-xxx temporary option definitions was fixed. | |
2201 | ||
2202 | - Delayed-ack is now a compile-time option, compiled out by default. | |
2203 | This feature is simply too experimental for right now, and causes | |
2204 | some problems to some failover installations. We will revisit this | |
2205 | in future releases. | |
2206 | ||
2207 | - The !inet_pton() call in res_mkupdrec was adjusted to '<= 0' as | |
2208 | inet_pton returns either 1, 0, or -1. | |
2209 | ||
2210 | - A dhclient-script for MacOS X has been included, which enables | |
2211 | 'dhclient -6' support. | |
2212 | ||
2213 | - DDNS removal routines were updated so that the DHCID is not removed until | |
2214 | the client has been deprived of all A and AAAA records (not only the last | |
2215 | one of either of those). This resolves a bug where dual stack clients | |
2216 | would not be able to regain their names after either expiration event. | |
2217 | ||
2218 | Changes since 4.1.0a1 | |
2219 | ||
2220 | - Corrected list of failover state values in dhcpd man page. | |
2221 | ||
2222 | - Fixed a bug that caused some request types to be logged incorrectly. | |
2223 | ||
2224 | - Clients that sent a parameter request list containing the | |
2225 | routers option before the subnet mask option were receiving | |
2226 | only the latter. Fixed. | |
2227 | ||
2228 | - The server wasn't always sending the FQDN option when it should. | |
2229 | ||
2230 | - A partner-down failover server no longer emits 'peer holds all free leases' | |
2231 | if it is able to newly-allocate one of the peer's leases. | |
2232 | ||
2233 | - Fixed a coredump when adding a class via OMAPI. | |
2234 | ||
2235 | - Check whether files are zero length before trying to parse them. | |
2236 | ||
2237 | - Ari Edelkind's PARANOIA patch has been included and may be compiled in | |
2238 | via two ./configure parameters, --enable-paranoia and | |
2239 | --enable-early-chroot. | |
2240 | ||
2241 | - ./configure was extended to cover many optional build features, such | |
2242 | as failover, server tracing, debugging, and the execute() command. | |
2243 | ||
2244 | - There is now a default 1/4 of a second scheduled delay between delayed | |
2245 | fsync()'s, it can be configured by the max-ack-delay configuration | |
2246 | parameter. | |
2247 | ||
2248 | - A bug was fixed where the length of a hostname was miscalculated, so that | |
2249 | hosts were given odd-looking domain names ("foo.bar.ba.example.com"). | |
2250 | ||
2251 | - Shared network selection should be done from the innermost relay | |
2252 | valid link-address field, rather than the outermost. | |
2253 | ||
2254 | - Prefix pools are attached to shared network scopes. | |
2255 | ||
2256 | - Merged IA_XX related structures. | |
2257 | ||
2258 | - Add DHCPv6 files in configure. | |
2259 | ||
2260 | - A memory leak when using omapi has been fixed. | |
2261 | ||
2262 | - DHCPv6 vendor-class options (VSIO) are now only sent when they appear | |
2263 | on the DHCPv6 ORO. This resolves a bug where VSIO options were placed | |
2264 | in IA_NA encapsulated options fields. | |
2265 | ||
2266 | - Integrated client with stateless, temporary address and prefix delegation | |
2267 | support. | |
2268 | ||
2269 | - A double-dereference in dhclient transmission of DHCPDECLINEs was | |
2270 | repaired. | |
2271 | ||
2272 | - Fix handling of format code 'Z'. | |
2273 | ||
2274 | - Support "-1" argument in DHCPv6. | |
2275 | ||
2276 | - Merge DHCPv6-only "dhcrelay6" into general-purpose "dhcrelay" (use | |
2277 | "-6" option to select DHCPv6 mode). | |
2278 | ||
2279 | - Fix handling of -A and -a flags in dhcrelay; it was failing to expand | |
2280 | packet size as needed to add relay agent options. | |
2281 | ||
2282 | - A bug in subnet6 parsing where options contained in subnet6 clauses would | |
2283 | not be applied to clients addressed within that network was repaired. | |
2284 | ||
2285 | - When configuring a "subnet {}" or "subnet6 {}" without an explicit | |
2286 | shared-network enclosing it, the DHCP software would synthesize a | |
2287 | shared-network to contain the subnet. However, all configuration | |
2288 | parameters within the subnet more intuitively belong "to any client | |
2289 | on that interface", or rather the synthesized shared-network. So, | |
2290 | when a shared-network is synthesized, it is used to contain the | |
2291 | configuration present inside the subnet {} clause. This means that | |
2292 | the configuration will be valid for all clients on that network, not | |
2293 | just those addressed out of the stated subnet. If you intended the | |
2294 | opposite, the workaround is to explicitly configure an empty | |
2295 | shared-network. | |
2296 | ||
2297 | - A bug was fixed where Information-Request processing was not sourcing | |
2298 | configured option values. | |
2299 | ||
2300 | - A warning was added since the DHCPv6 processing software does not yet | |
2301 | support class statements. | |
2302 | ||
2303 | - Compilation warnings on GCC 4.3 relating to bootp source address | |
2304 | selection were repaired. | |
2305 | ||
2306 | - The v6 BSD socket method was updated to use a single UDP BSD socket | |
2307 | no matter how many interfaces are involved, differentiating the | |
2308 | interfaces the packets were received on by the interface index supplied | |
2309 | by the OS. | |
2310 | ||
2311 | - The relay agent no longer listens to the All DHCP Servers Multicast | |
2312 | address. | |
2313 | ||
2314 | - A bug was fixed in data_string_sprintfa() where va_start was only called | |
2315 | once for two invocations of vsprintf() variants. | |
2316 | ||
2317 | - ERO (RFC 4994) server support. | |
2318 | ||
2319 | - Basic and partial DHCPv6 leasequery support. | |
2320 | ||
2321 | - Reliable DHCPv6 release (previous behavior, send release and exit, is | |
2322 | still available with dhclient -6 -1 -r). | |
2323 | ||
2324 | Changes since 4.0.0 (new features) | |
2325 | ||
2326 | - Added DHCPv6 rapid commit support. | |
2327 | ||
2328 | - Added explicit parser support for zero-length DHCP options, such as | |
2329 | rapid-commit, via format code 'Z'. | |
2330 | ||
2331 | - It's now possible to update the "ends" field of a lease with OMAPI. | |
2332 | This is useful if you want not only to release a lease, but also make | |
2333 | it available for reuse right away. Hat tip to Christof Chen. | |
2334 | ||
2335 | - Fixed definition of the iaaddr hash functions to use the correct | |
2336 | functions when referencing and dereferencing memory. | |
2337 | ||
2338 | - Some definitions not in phase with the IANA registry were updated. | |
2339 | ||
2340 | - Allocated interface IDs are better controlled ('u' bit set to zero, | |
2341 | reserved IDs avoided). | |
2342 | ||
2343 | - Unicast options are taken into account only for RENEWs. | |
2344 | ||
2345 | - NoAddrsAvail answers to SOLICITs are always ADVERTISEs even when a SOLICIT | |
2346 | carries a rapid-commit option. | |
2347 | ||
2348 | - Return in place of raise an impossible condition when one tries to release | |
2349 | an empty active lease. | |
2350 | ||
2351 | - Timer granularity is now 1/100s in the DHCPv6 client. | |
2352 | ||
2353 | - The dhclient-script was updated to create a host route for the default | |
2354 | gateway if the supplied subnet mask for an IPv4 address was a /32. This | |
2355 | allows the client to work in 'captive' network environments, where the | |
2356 | operator does not want clients to crosstalk directly. | |
2357 | ||
2358 | - MINUS tokens should be parsable again. | |
2359 | ||
2360 | - Multiple (up to "delayed-ack x;" maximum) DHCPv4 packets are now queued and | |
2361 | released in bursts after single fsync() events when the upper limit is | |
2362 | reached or if the receiving sockets go dry. The practical upshot is | |
2363 | that fsync-coupled server performance is now multiplicitively increased. | |
2364 | The default delayed ack limit is 28. Thanks entirely to a patch from | |
2365 | Christof Chen. | |
2366 | ||
2367 | Changes since 4.0.0 (bug fixes) | |
2368 | ||
2369 | - DHCP now builds on AIX. | |
2370 | ||
2371 | - Exit with warning when DHCPv6-specific statements are used in the | |
2372 | config file but -6 is not specified. | |
2373 | ||
2374 | - Fixed "--version" flag in dhcrelay | |
2375 | ||
2376 | - The 'min-secs' configuration parameter's log message has been updated to | |
2377 | be more helpful. | |
2378 | ||
2379 | - The warning logged when an address range doesn't fit in the subnets | |
2380 | they were declared has been updated to be more helpful and identify the | |
2381 | typo in configuration that created the spanning addresses. | |
2382 | ||
2383 | - A bug in failover pool rebalancing that caused POOLREQ message ping-pongs | |
2384 | was repaired. | |
2385 | ||
2386 | - A flaw in failover pool rebalancing that could cause POOLREQ messages to | |
2387 | be sent outside of the min-balance/max-balance scheduled intervals has | |
2388 | been repaired. | |
2389 | ||
2390 | - A cosmetic bug during potential-conflict recovery that caused the peer's | |
2391 | 'conflict-done' state message to be logged as 'unknown-state' has been | |
2392 | repaired. It is now logged correctly. | |
2393 | ||
2394 | - A bug was fixed where the 'giaddr' may be used to find the client's subnet | |
2395 | rather than its own 'ciaddr'. | |
2396 | ||
2397 | - A log message was introduced to clarify the situation where a failover | |
2398 | 'address' parameter (the server's local address) did not resolve to an | |
2399 | IPv4 address. | |
2400 | ||
2401 | - The minimum site code value was set to 224 in 3.1.0 to track RFC3942. This | |
2402 | broke a lot of legacy site local configurations. The new code in place will | |
2403 | track site local space minimum option codes and logs a warning to encourage | |
2404 | updates and exploration of site local code migration problems. Option | |
2405 | codes less than 128 in site local spaces remain inaccessible. | |
2406 | ||
2407 | - A possible relay agent option bug was repaired where random server | |
2408 | initialization state may have been used to signal the relay agent | |
2409 | information options sub-option code for the 'END' of the option space. | |
2410 | ||
2411 | - Fixes to allow code to compile and run on Solaris 9. | |
2412 | ||
2413 | - Fixes to allow code to compile on Mac OS X Leopard (10.5). | |
2414 | ||
2415 | - When server is configured with options that it overrides, a warning is | |
2416 | issued when the configuration file is read, rather than at the time the | |
2417 | option is overridden. This was important, because the warning was given | |
2418 | every time the option was overridden, which could create a lot of | |
2419 | unnecessary logging. | |
2420 | ||
2421 | - Fixed a compilation problems on platforms that define a value for FDDI, | |
2422 | which conflicts with a dhcp configuration syntax token by the same name. | |
2423 | ||
2424 | - When a failover server suspects it has encountered a peer running a | |
2425 | version 3.0.x failover server, a warning that the failover wire protocol | |
2426 | is incompatible is printed. | |
2427 | ||
2428 | - The failover server no longer issues a floating point error if it encounters | |
2429 | a previously undefined option code. | |
2430 | ||
2431 | - Fix startup error messages to report a missing "subnet6 declaration", rather | |
2432 | than a missing "subnet declaration", when running as a DHCPv6 server. | |
2433 | ||
2434 | - DHCPv6 client timestamp in DUID was based on the year 1970 rather | |
2435 | than the year 2000. | |
2436 | ||
2437 | - Warn when attempting to use a hardware parameter in DHCPv6. | |
2438 | ||
2439 | - DHCPv6 released resources are now marked as released by the client. | |
2440 | ||
2441 | - 'Soft' bindings have no more side-effects. | |
2442 | ||
2443 | Changes since 4.0.0b3 | |
2444 | ||
2445 | - The reverse dns name for PTR updates on IPv6 addresses has been fixed to | |
2446 | use ip6.arpa. rather than default to in-addr.arpa and require user | |
2447 | configuration. | |
2448 | ||
2449 | - dhc6_lease_destroy() and dhc6_ia_destroy() now set lease and IA pointers | |
2450 | to NULL after freeing, to prevent subsequent accesses to freed memory. | |
2451 | ||
2452 | - The DHCPv6 server would not send the preference option unless the | |
2453 | client requested it, via the ORO. This has been fixed, so the DHCPv6 | |
2454 | server will always send the preference value if it is configured. | |
2455 | ||
2456 | - When addresses were passed as hints to the server in an IA, they were | |
2457 | incorrectly handled, sometimes being treated as an error. Now the | |
2458 | server will treat these as hints and ignore them if it cannot supply | |
2459 | a requested address. | |
2460 | ||
2461 | - If the client had multiple addresses, and one expired (was not renewed | |
2462 | by the server), the client would continue to attempt to renew the same | |
2463 | old address over and over. Now, the client will omit any expired | |
2464 | addresses from future Confirm, Renew, or Rebind messages. | |
2465 | ||
2466 | - dhclient -6 will now select renew/rebind timers based upon the longest | |
2467 | address expiration time rather than the shortest expiration time, in | |
2468 | order to avoid cascading renewals in the event a server elects not to | |
2469 | extend one of multiple IAADDR leases. | |
2470 | ||
2471 | - The server now limits clients that request multiple addresses to one | |
2472 | address per IA by default, which can be adjusted through the | |
2473 | "limit-addrs-per-ia" configuration option. | |
2474 | ||
2475 | - The DHCPv6 client now issues fresh transaction IDs on Renew and Rebind | |
2476 | message exchanges, rather than using the most recent ID. | |
2477 | ||
2478 | - The DHCPv6 server now replies to Information-Request messages. | |
2479 | ||
2480 | - A bug was fixed in the dhclient-script for BSDs to correctly carry error | |
2481 | codes through some conditions. | |
2482 | ||
2483 | - The parsing of some options in the dhclient lease file, in particular | |
2484 | the success DHCPv6 status-code, was fixed. | |
2485 | ||
2486 | - A bug was fixed that caused the DHCPv6 ORO option to be corrupted with | |
2487 | seemingly random values. | |
2488 | ||
2489 | - A reference overleak in DHCPv6 shared network processing was repaired. | |
2490 | ||
2491 | - ./configure now autodetects local database locations rather than trying | |
2492 | to put dhcpd.leases and dhclient.leases in /usr/local/var/db, which no | |
2493 | one ever has. | |
2494 | ||
2495 | - Regression fix for bug where server advertised a IPv6 address in | |
2496 | response to a SOLICIT but would not return the address in response | |
2497 | to a REQUEST. | |
2498 | ||
2499 | - A bug was fixed where the DHCPv6 server puts the NoAddrsAvail status | |
2500 | code in the IA_NA was fixed. The status code now appears in the root | |
2501 | level. | |
2502 | ||
2503 | Changes since 4.0.0b2 | |
2504 | ||
2505 | - Clarified error message when lease limit exceeded | |
2506 | ||
2507 | - Relative time may now be used as a qualifier for 'allow' and 'deny' access | |
2508 | control lists. These directives may be used to assist in re-addressing | |
2509 | address pools without having to constantly reconfigure the server. Please | |
2510 | see 'man dhcpd.conf' for more information on allow/deny 'after time' syntax. | |
2511 | Thanks to a patch from Christof Chen. | |
2512 | ||
2513 | - The server will now include multiple IA_NA's and multiple IAADDRs within | |
2514 | them, if advertised by the client. It still only seeks to allocate one | |
2515 | new address. | |
2516 | ||
2517 | Changes since 4.0.0b1 | |
2518 | ||
2519 | - Use different paths for PID and lease files when running in DHCPv4 | |
2520 | or DHCPv6 mode, so that servers for both protocols can be run | |
2521 | simultaneously on a single interface. | |
2522 | ||
2523 | - Fixed a buffer overflow error which could have allowed a denial | |
2524 | of service under unusual server configurations | |
2525 | ||
2526 | - Eliminated a spurious error message from the client | |
2527 | ||
2528 | - A number of bugs with the internal handling of lease state on the | |
2529 | server have been fixed. Some of these could cause server crashes. | |
2530 | ||
2531 | - The peer_wants_leases() changes pulled up from 3.1.0 were corrected, | |
2532 | 'never used' leases will no longer consistently shift between servers | |
2533 | on every pool rebalance run. | |
2534 | ||
2535 | - sendmsg()/recvmsg() control buffers are now declared in such a way to | |
2536 | ensure they are correctly aligned on all (esp. 64-bit) architectures. | |
2537 | ||
2538 | - The client leasing subsystem was streamlined and corrected to account | |
2539 | more closely for changes in client link attachment selection. | |
2540 | ||
2541 | Changes since 4.0.0a3 | |
2542 | ||
2543 | - The DHCP server no longer requires a "ddns-update-style" statement, | |
2544 | and now defaults to "none", which means DNS updates are disabled. | |
2545 | ||
2546 | - Log messages when failover peer names mismatch have been improved to | |
2547 | point out the problem. | |
2548 | ||
2549 | - Bug where server advertised a IPv6 address in response to a SOLICIT | |
2550 | but would not return the address in response to a REQUEST. Thanks to | |
2551 | Dennis Kou for finding the bug. | |
2552 | ||
2553 | - Fixed an error causing the server to lock up on lease expiration, | |
2554 | reported independently by Jothilingam Vasu and Dennis Kou. | |
2555 | ||
2556 | - Fixed a ./configure bug where compile tests were failing due to | |
2557 | "-Werror" (unused variable) rather than the actual test failure. Lead | |
2558 | to inconsistent and unworkable auto-configurations. | |
2559 | ||
2560 | - Compilation with DLPI and -Werror has been repaired. | |
2561 | ||
2562 | - Error in decoding IA_NA option if multiple interfaces are present | |
2563 | fixed by Marcus Goller. | |
2564 | ||
2565 | - DHCPv6 server Confirm message processing has been enhanced - it no | |
2566 | longer replies only to clients with host {} records, it now replies | |
2567 | as directed in RFC3315 section 18.2.2 - that is, to all clients | |
2568 | regardless of the existence of bindings. | |
2569 | ||
2570 | - A core dump during expired lease cleanup has been repaired. | |
2571 | ||
2572 | - DDNS updates state information are now stored in 'binding scopes' that | |
2573 | follow the leases through their lifecycles. This enables DDNS teardowns | |
2574 | on leases that are assigned and expired inbetween a server restart (the | |
2575 | state is recovered from dhcpd.leases). Arbitrary user-specified binding | |
2576 | scopes ('set var = "value";') are not yet supported. | |
2577 | ||
2578 | - Additional compilation problems on HP/UX have been repaired. | |
2579 | ||
2580 | Changes since 4.0.0a2 | |
2581 | ||
2582 | - Fix for startup where there are no IPv4 addresses on an interface. | |
2583 | Thanks to Marcus Goller for reporting the bug. | |
2584 | ||
2585 | - Fixed file descriptor leak on listen failure. Thanks to Tom Clark. | |
2586 | ||
2587 | - Bug in server configuration parser caused server to get stuck on | |
2588 | startup for certain bad pool declarations. Thanks to Guillaume | |
2589 | Knispel for the bug report and fix. | |
2590 | ||
2591 | - Code cleaned to remove warnings reported by "gcc -Wall". | |
2592 | ||
2593 | - DHCPv6 is now the default. You can disable DHCPv6 support using the | |
2594 | "--disable-dhcpv6" flag when you run the configure script. | |
2595 | ||
2596 | - An internal database inconsistency bug was repaired where the server | |
2597 | would segfault if a client attempted to renew a lease that had been | |
2598 | loaded from persistent storage. | |
2599 | ||
2600 | - 'request' and 'also request' syntaxes have been added to accommodate | |
2601 | the DHCPv6 client configuration. 'send dhcp6.oro' is no longer | |
2602 | necessary. | |
2603 | ||
2604 | - Bug fixed where configuration file parsing did not work with | |
2605 | zero-length options; this made it impossible to set the | |
2606 | rapid-commit option. | |
2607 | ||
2608 | - Bogus messages about host records with IPv4 fixed-addresses being of | |
2609 | non-128-bits in length were removed. | |
2610 | ||
2611 | Changes since 4.0.0a1 | |
2612 | ||
2613 | - Bug in octal parsing fixed. Thanks to Bernd Fuhrmann for the report | |
2614 | and fix. | |
2615 | ||
2616 | - Autoconf now supplies proper flags for Solaris DHCPv6 builds. | |
2617 | ||
2618 | - Fix for parsing error on some IPv6 addresses. | |
2619 | ||
2620 | - Invalid CIDR representation for IPv6 subnets or ranges now checked | |
2621 | for when loading configuration. | |
2622 | ||
2623 | - Compilation on HP/UX has been repaired. The changes should generally | |
2624 | apply to any architecture that supplies SIOCGLIFCONF but does not | |
2625 | use 'struct lifconf' structures to pass values. | |
2626 | ||
2627 | - Two new operators, ~= and ~~, have been integrated to implement | |
2628 | boolean matches by regular expression (such as may be used in | |
2629 | class matching statements). Thanks to a patch by Alexandr S. | |
2630 | Agranovsky, which underwent slight modification. | |
2631 | ||
2632 | - Fix for icmp packets on 64-bit systems (bug introduced in 4.0). | |
2633 | ||
2634 | - A bug was fixed in interface discovery wherein an error identifying | |
2635 | a server-configured interface with no IPv4 addresses would SEGV. | |
2636 | ||
2637 | - Fixed a bug in which write_lease() might report a failure incorrectly | |
2638 | ||
2639 | - Added support for DHCPv6 Release messages | |
2640 | ||
2641 | - Added -x option to dhclient, which triggers dhclient processes | |
2642 | to exit gracefully without releasing leases first | |
2643 | ||
2644 | - All binaries (client, server, relay) now change directories | |
2645 | to / before going into daemon mode, so as not to hold $CWD open | |
2646 | ||
2647 | - Fixed a bug parsing DHCPv6 client-id's in host-identifier statements | |
2648 | ||
2649 | - Fixed a bug with the 'ddns-updates' boolean server configuration | |
2650 | parameter, which caused the server to fail. | |
2651 | ||
2652 | Changes since 4.0.0-20070413 | |
2653 | ||
2654 | - Old (expired) leases are now cleaned. | |
2655 | ||
2656 | - IPv6 subnets now have support for arbitrary allocation ranges via | |
2657 | a new 'range6' configuration directive. | |
2658 | ||
2659 | - An obviated option code hash lookup to find D6O_CLIENTID was removed. | |
2660 | ||
2661 | - Corrected some situations where variables might be used without being | |
2662 | initialized. | |
2663 | ||
2664 | - Silenced several other compiler warnings. | |
2665 | ||
2666 | - Include the more standard sys/uio.h rather than rely upon other | |
2667 | header files to include it (fixes a BSD 4.2 compile failure). | |
2668 | ||
2669 | - Duplicate dhclient-script updates for DHCPv6 to all provided scripts. | |
2670 | ||
2671 | - DHCPv4 I/O methods that failed to sense hardware address were corrected. | |
2672 | ||
2673 | - DHCPv4 is now the default (as documented) rather than DHCPv6. The default | |
2674 | was set to DHCPv6 to facilitate ease early development, and forgotten. | |
2675 | ||
2676 | - Corrected a segmentation violation in DHCPv4 socket processing. | |
2677 | ||
2678 | - dhclient will now fork() into the background once it binds to an | |
2679 | IPv6 address, or immediately if the -n flag is supplied. | |
2680 | ||
2681 | - -q is now the default behaviour on dhclient, with -d or -v enabling | |
2682 | non-quiet (stderr logging) mode. | |
2683 | ||
2684 | - Fix documentation of the domain-search atom (quoted, with commas). | |
2685 | ||
2686 | - Document DHCPv6 options presently in the default table. | |
2687 | ||
2688 | - Replaced ./configure shellscripting with GNU Autoconf. | |
2689 | ||
2690 | Changes since 3.1.0 (NEW FEATURES) | |
2691 | ||
2692 | - DHCPv6 Client and Server protocol support. Use '-6' to run the daemons | |
2693 | as v6-only. Use '-4' to run the daemons as v4-only (default. There is | |
2694 | no support currently for both. | |
2695 | ||
2696 | - Server support for multiple IA_NA options, containing at most one | |
2697 | IAADDR option. | |
2698 | ||
2699 | - Client support for one IA_NA option, containing any number of IAADDR | |
2700 | options. | |
2701 | ||
2702 | - Server support for the DHCPv6 Information-request message. | |
2703 | ||
2704 | - Inappropriate unicast DHCPv6 messages sent to the server are now | |
2705 | discarded, and this has rearchitected the IO system slightly. | |
2706 | ||
2707 | - The DHCPv6 server DUID defaults to type 1, is persistently stored in | |
2708 | the leases database, and can be over-ridden (either completely, or by | |
2709 | specifying type 1 or type 2). | |
2710 | ||
2711 | - The server only uses Rapid-Commit if it has been configured with the | |
2712 | Rapid-Commit option and the client requests it. | |
2713 | ||
2714 | - DDNS support. We now update AAAA records in the same place we would | |
2715 | update A records, if we have an IPv6 address. We also generate IP6.ARPA | |
2716 | style names for PTR records if we're dealing with an IPv6 address. Both | |
2717 | A and AAAA updates are done using the same 'fqdn.' virtual option space | |
2718 | (although the DHCPv4 FQDN and DHCPv6 FQDN options are formatted | |
2719 | differently, they both use the same code here). | |
2720 | ||
2721 | - The Linux dhclient-script attempts to set and remove assigned addresses, | |
2722 | and to configure /etc/resolv.conf from nameserver and domain name | |
2723 | configurations. It can be extended to configure other parameters. | |
2724 | ||
2725 | - Initial DHCPv6 lease support. | |
2726 | ||
2727 | - The IO system now tracks all local IP addresses, so that the DHCP | |
2728 | applications (particularly the dhcrelay) can discern between what frames | |
2729 | were transmitted to it, and what frames are being carried through it which | |
2730 | it should not intercept. | |
2731 | ||
2732 | Changes since 3.1.0 (Maintenance) | |
2733 | ||
2734 | - A bug was repaired where MAC Address Affinity for virgin leases always | |
2735 | mapped to the primary. Virgin leases now have an interleaved preference | |
2736 | between primary and secondary. | |
2737 | ||
2738 | - A bug was repaired where MAC Address Affinity for clients with no client | |
2739 | identifier was sometimes mishashed to the peer. Load balancing during | |
2740 | runtime and pool rebalancing were opposing. | |
2741 | ||
2742 | - An assertion in lease counting relating to reserved leases was repaired. | |
2743 | ||
2744 | - The subnet-mask option inclusion now conforms with RFC2132 section 3.3; | |
2745 | it will only appear prior to the routers option if it is present on the | |
2746 | Parameter-Request-List. The subnet-mask option will also only be | |
2747 | included by default (if it is not on the PRL) in response to DISCOVER | |
2748 | or REQUEST messages. | |
2749 | ||
2750 | - The FQDN option is only supplied if the client supplied an FQDN option or | |
2751 | if the FQDN option was explicitly requested on the PRL. | |
2752 | ||
2753 | - Dynamic BOOTP leases are now load balanced in failover. | |
2754 | ||
2755 | Changes since 3.1.0rc1 | |
2756 | ||
2757 | - The parse warning that 'deny dynamic bootp;' must be configured for | |
2758 | failover protected subnets was removed. | |
2759 | ||
2760 | Changes since 3.1.0b2 | |
2761 | ||
2762 | - Failover rebalance events no longer play ping pong with round errors | |
2763 | (moving leases between free and back to backup where there are an | |
2764 | odd number of leases). | |
2765 | ||
2766 | - The 'pool' log line has been split into two messages, one before the | |
2767 | rebalance run, and one after. | |
2768 | ||
2769 | - Any queued BNDACKs are transmitted before transmitting new BNDUPDs. | |
2770 | This enforces the correct sequence of events for the remote server | |
2771 | processing these messages. | |
2772 | ||
2773 | Changes since 3.1.0b1 | |
2774 | ||
2775 | - Fixed a bug that caused OMAPI clients to freeze when opening lease | |
2776 | objects. | |
2777 | ||
2778 | - A new server config option "fqdn-reply" specifies whether the server | |
2779 | should send out option 81 (FQDN). Defaults to "on". If set to "off", | |
2780 | the FQDN option is not sent, even if the client requested it. This is | |
2781 | needed because some clients misbehave otherwise. Thanks to Christof Chen | |
2782 | at Allianz. | |
2783 | ||
2784 | - Allow trace output files (-tf option) to be overwritten, rather than | |
2785 | crashing dhcpd if the file already exists | |
2786 | ||
2787 | - A bug was fixed that caused dhcpd to segfault if a pool was declared | |
2788 | outside the scope of a subnet in dhcpd.conf. | |
2789 | ||
2790 | - Some uninitialized values were repaired in dhcpleasequery.c that | |
2791 | caused the server to abort. | |
2792 | ||
2793 | - A new server config option, 'do-reverse-updates', has been added | |
2794 | which causes the server to abstain from performing updates on PTR | |
2795 | records. Thanks to a patch from Christof Chen at Allianz. | |
2796 | ||
2797 | - A bug was repaired in subencapsulation support, where spaces separated | |
2798 | by empty spaces would not get included. | |
2799 | ||
2800 | - A bug in dhclient was repaired which caused it to send parameter request | |
2801 | lists of 55 bytes in length no matter how long the declared PRL was. | |
2802 | ||
2803 | - 'dhcp.c(3953): non-null pointer' has been repaired. This fixes a flaw | |
2804 | wherein the DHCPv4 server may ignore a configured server-identifier. | |
2805 | ||
2806 | - A flaw in failover startup sequences was repaired that sometimes left | |
2807 | the primary DHCP server's pool rebalance schedules unscheduled. | |
2808 | ||
2809 | - Corrected a flaw that broke encapsulated spaces included due to presence | |
2810 | on the parameter request list. | |
2811 | ||
2812 | Changes since 3.1.0a3 | |
2813 | ||
2814 | - Some spelling fixes. | |
2815 | ||
2816 | Changes since 3.1.0a2 | |
2817 | ||
2818 | - A bug was fixed where attempting to permit leasequeries results in a | |
2819 | fatal internal error, "Unable to find server option 49". | |
2820 | ||
2821 | - A bug was fixed in dhclient rendering the textual output form of the | |
2822 | domain-search option syntax. | |
2823 | ||
2824 | Changes since 3.1.0a1 | |
2825 | ||
2826 | - A bug in the FQDN universe that added FQDN codes to the NWIP universe's | |
2827 | hash table was repaired. | |
2828 | ||
2829 | - The servers now try harder to transmit pending binding updates when | |
2830 | entering normal state. | |
2831 | ||
2832 | - UPDREQ/UPDREQALL handling was optimized - it no longer dequeues and | |
2833 | requeues all pending updates. This should reduce the number of spurious | |
2834 | 'xid mismatch' log messages. | |
2835 | ||
2836 | - An option definition referencing leak was fixed, which resulted in early | |
2837 | termination of dhclient upon the renewal event. | |
2838 | ||
2839 | - Some default hash table sizes were tweaked, some upwards, some downwards. | |
2840 | 3.1.0a1's tables resulted in a reduction in default server memory use. | |
2841 | The new selected values provide more of a zero sum (increasing the size | |
2842 | of tables likely to be populated, decreasing the size of tables unlikely). | |
2843 | ||
2844 | - Lease structures appear in three separate hashes: by IP address, by UID, | |
2845 | and by hardware address. One type of table was used for all three, and | |
2846 | improvements to IP address hashing were applied to all three (so UID and | |
2847 | hardware addresses were treated like 4-byte integers). There are now two | |
2848 | types of tables, and the uid/hw hashes use functions more appropriate | |
2849 | to their needs. | |
2850 | ||
2851 | - The max-lease-misbalance percentage no longer causes scheduled rebalance | |
2852 | runs to be skipped: it still governs the schedule, but every scheduled | |
2853 | run will attempt balance. | |
2854 | ||
2855 | - A segfault bug in recursive encapsulation support has been corrected. | |
2856 | ||
2857 | Changes since 3.0 (New Features) | |
2858 | ||
2859 | - A workaround for certain STSN servers that send a mangled domain-name | |
2860 | option was introduced for dhclient. The client will now accept corrupted | |
2861 | server responses, if they contain a valid DHCP_MESSAGE_TYPE (OFFER, ACK, | |
2862 | or NAK). The server will continue to not accept corrupt client packets. | |
2863 | ||
2864 | - Support for 'reserved' (pseudo-static) and BOOTP leases via failover | |
2865 | was introduced. | |
2866 | ||
2867 | - Support for adding, removing, and managing class and subclass statements | |
2868 | via OMAPI. | |
2869 | ||
2870 | - The failover implementation was updated to comply with revision 12 of | |
2871 | the protocol draft. | |
2872 | ||
2873 | - 'make install' now creates the initial zero-length dhcpd.leases file if | |
2874 | one does not already exist on the system. | |
2875 | ||
2876 | - RFC3942 compliance, site-local option spaces start at 224 now, not 128. | |
2877 | ||
2878 | - The Load Balance Algorithm was misimplemented. The current implementation | |
2879 | matches RFC 3074. | |
2880 | ||
2881 | - lcase() and ucase() configuration expressions have been added which adjust | |
2882 | their arguments from upper to lower and lower to upper cases respectively. | |
2883 | Thanks to a patch from Albert Herranz. | |
2884 | ||
2885 | - The dhclient 'reject ...;' statement, which rejects leases given by named | |
2886 | server-identifiers, now permits address ranges to be specified in CIDR | |
2887 | notation. Thanks to a patch from David Boyce. | |
2888 | ||
2889 | - The subnet-mask option is now supplied by default, but at lowest | |
2890 | priority. This helps a small minority of clients that provide parameter | |
2891 | request lists, but do not list the subnet-mask option because they were | |
2892 | designed to interoperate with a server that behaves in this manner. | |
2893 | ||
2894 | - The FQDN option is similarly supplied even if it does not appear on the | |
2895 | parameter request list, but not to the exclusion of options that do | |
2896 | appear at the parameter request list. Up until now it had ultimate | |
2897 | priority over the client's parameter request list. | |
2898 | ||
2899 | - Varying option space code and length bit widths (8/16/32) are now | |
2900 | supported. This is a milestone in achieving RFC 3925 "VIVSO" and | |
2901 | DHCPv6 support. | |
2902 | ||
2903 | - A new common (server or client) option, 'db-time-format local;', has | |
2904 | been added which prints the local time in /var/db/dhcpd.leases rather | |
2905 | than UTC. Thanks to a patch from Ken Lalonde. | |
2906 | ||
2907 | - Some patches to improve DHCP Server startup speed from Andrew Matheson | |
2908 | have been incorporated. | |
2909 | ||
2910 | - Failover pairs now implement 'MAC Affinity' on leases moving from the | |
2911 | active to free states. Leases that belonged to the failover secondary | |
2912 | are moved to BACKUP state rather than FREE upon exiting EXPIRED state. | |
2913 | If lease rebalancing must move leases, it tries first to move leases | |
2914 | that belong to the peer in need. | |
2915 | ||
2916 | - The server no longer sends POOLREQ messages unless the pool is severely | |
2917 | misbalanced in the peer's favor (see 'man dhcpd.conf' for more details). | |
2918 | ||
2919 | - Pool rebalance events no longer happen upon successfully allocating a | |
2920 | lease. Instead, they happen on a schedule. See 'man dhcpd.conf' for the | |
2921 | min-balance and max-balance statements for more information. | |
2922 | ||
2923 | - The DHCP Relay Agent Information Option / Link Selection Sub-Option | |
2924 | is now supported. (See RFC3527 for details). | |
2925 | ||
2926 | - A new DDNS related server option, update-conflict-detection, has been | |
2927 | added. If this option is enabled, dhcpd will perform normal DHCID | |
2928 | conflict resolution (the default). If this option is disabled, it will | |
2929 | instead trust the assigned name implicitly (removing any other bindings | |
2930 | on that name). This option has not been made available in dhclient. | |
2931 | ||
2932 | - In those cases where the DHCP software manufactures an IP header (to | |
2933 | transmit via bpf, lpf, etc), the IP TTL the software selects has been | |
2934 | increased from 16 to 128. This is intended to match Microsoft Windows | |
2935 | DHCP Client behaviour, to increase compatibility. | |
2936 | ||
2937 | - 'ignore client-updates;' now has behaviour that is different from | |
2938 | 'deny client-updates;'. The client's request is not truly ignored, | |
2939 | rather it is encouraged. Should this value be configured, the server | |
2940 | updates DNS as though client-updates were set to 'deny'. That is, it | |
2941 | enters into DNS whatever it is configured to do already, provided it is | |
2942 | configured to. Then it sends a response to the client that lets the | |
2943 | client believe it is performing client updates (which it will), probably | |
2944 | for a different name. In essence, this lets the client do as it will, | |
2945 | ignoring this aspect of their request. | |
2946 | ||
2947 | - Support for compressed 'domain name list' style DHCP option contents, and | |
2948 | in particular the domain search option (#119) was added. | |
2949 | ||
2950 | - The DHCP LEASEQUERY protocol as defined in RFC4388 is now implemented. | |
2951 | LEASEQUERY lets you query the DHCP server for information about a lease, | |
2952 | using either an IP address, MAC address, or client identifier. Thanks | |
2953 | to a patch from Justin Haddad. | |
2954 | ||
2955 | - DHCPD is now RFC2131 section 4.1 compliant (broadcast to all-ones ip and | |
2956 | ethernet mac address) on the SCO platform specifically without any strange | |
2957 | ifconfig hacks. Many thanks go to the Kroger Co. for donating the | |
2958 | hardware and funding the development. | |
2959 | ||
2960 | - A new common configuration executable statement, execute(), has been | |
2961 | added. This permits dhcpd or dhclient to execute a named external | |
2962 | program with command line arguments specified from other configuration | |
2963 | language. Thanks to a patch written by Mattias Ronnblom, gotten to us | |
2964 | via Robin Breathe. | |
2965 | ||
2966 | - A new dhcp server option 'adaptive-lease-time-threshold' has been added | |
2967 | which causes the server to substantially reduce lease-times if there are | |
2968 | few (configured percentage) remaining leases. Thanks to a patch submitted | |
2969 | from Christof Chen. | |
2970 | ||
2971 | - Encapsulated option spaces within encapsulated option spaces is now | |
2972 | formally supported. | |
2973 | ||
2974 | Changes since 3.0.6rc1 | |
2975 | ||
2976 | - supersede_lease() now requeues leases in their respective hardware | |
2977 | address hash bucket. This mirrors client identifier behaviour. | |
2978 | ||
2979 | Changes since 3.0.5 | |
2980 | ||
2981 | - Assorted fixes for broken network devices: Packet length is now | |
2982 | determined from the IP header length field to finally calculate the | |
2983 | UDP payload length, because some NIC drivers return more data than | |
2984 | they actually received. | |
2985 | ||
2986 | - UDP packets are now stored in aligned data structures. | |
2987 | ||
2988 | - A logic error in omapi interface code was repaired that might result in | |
2989 | incorrectly indicating 'up' state when any flags were set, rather than | |
2990 | specifically the INTERFACE_REQUESTED flag. Thanks to a patch from | |
2991 | Jochen Voss which got to us via Andrew Pollock at Debian. | |
2992 | ||
2993 | - A reference leak on binding scopes set by ddns updates was repaired. | |
2994 | ||
2995 | - A memory leak in the minires_nsendsigned() function call was repaired. | |
2996 | Effectively, this leaked ~176 bytes per DDNS update. | |
2997 | ||
2998 | - In the case where an "L2" DHCP Relay Agent (one that does not set giaddr) | |
2999 | was directly attached to the same broadcast domain as the DHCP server, | |
3000 | the RFC3046 relay agent information option was not being returned to the | |
3001 | relay in the server's replies. This was fixed; the dhcp server no longer | |
3002 | requires the giaddr to reply with relay agent information. Note that | |
3003 | this also improves compatibility with L2 devices that "intercept" DHCP | |
3004 | packets and expect relay agent information even in unicast (renewal) | |
3005 | replies. Thanks to a patch from Pekka Silvonen. | |
3006 | ||
3007 | - A bug was fixed where the BOOTP header 'sname' field had a value, the | |
3008 | copy written to persistent storage was actually the contents of the | |
3009 | 'file' field. | |
3010 | ||
3011 | - A bug was fixed where the nwip virtual option space was referencing | |
3012 | the fqdn option's virtual option space's option cache. | |
3013 | ||
3014 | - Timestamp parsing errors that indicated missing "minutes" fields rather | |
3015 | than the actually missing "seconds" fields have been repaired thanks to | |
3016 | a patch from Kevin Steves. | |
3017 | ||
3018 | - A grammar error in the dhclient.8 manpage was repaired thanks to a patch | |
3019 | from Chris Wagner. | |
3020 | ||
3021 | - Several spelling typos were repaired, and some cross-references to other | |
3022 | relevant documents were included in the manpages, thanks to a patch | |
3023 | by Andrew Pollock which got to us via Tomas Pospisek. | |
3024 | ||
3025 | - Some bugs were fixed in the 'emergency relay agent options hologram' | |
3026 | which is used to retain relay agent option contents from when the | |
3027 | client was in INIT or REBIND states. This should solve problems where | |
3028 | relay agent options were not echoed from the server, even when giaddr | |
3029 | was set. | |
3030 | ||
3031 | - dhclient now closes its descriptor to dhclient.leases prior to executing | |
3032 | dhclient-script. Thanks to a patch from Tomas Pospisek. | |
3033 | ||
3034 | - The server's "by client-id" and "by hardware address" hash table lists | |
3035 | are now sorted according to the preference to re-allocate that lease to | |
3036 | returning clients. This should eliminate pool starvation problems | |
3037 | arising when "INIT" clients were given new leases rather than presently | |
3038 | active ones. | |
3039 | ||
3040 | Changes since 3.0.5rc1 | |
3041 | ||
3042 | - A bug was repaired in fixes to the dhclient, which sought to run the | |
3043 | dhclient-script with the 'EXPIRE' state should it receive a NAK in | |
3044 | response to a REQUEST. The client now iterates the PREINIT state | |
3045 | after the EXPIRE state, so that interfaces that might be configured | |
3046 | 'down' can be brought back 'up' and initialized. | |
3047 | ||
3048 | - DHCPINFORM handling for clients that properly set ciaddr and come to the | |
3049 | server via a relay aget has been repaired. | |
3050 | ||
3051 | Changes since 3.0.4 | |
3052 | ||
3053 | - A warning that host statements declared within subnet or shared-network | |
3054 | scopes are actually global has been added. | |
3055 | ||
3056 | - The default minimum lease time (if min-lease-time was not specified) | |
3057 | was raised from 0 to 300. 0 is not thought to be sensible, and is | |
3058 | known to be damaging. | |
3059 | ||
3060 | - Added additional fatal error sanity checks surrounding lease binding | |
3061 | state count calculations (free/active counts used for failover pool | |
3062 | balancing). | |
3063 | ||
3064 | - Some time value size fixes in 3.0.4 brought on from FreeBSD /usr/ports were | |
3065 | misapplied to server values rather than client values. The server no longer | |
3066 | advertises 8-byte lease-time options when on 64-bit platforms. | |
3067 | ||
3068 | - A bug where leases not in ACTIVE state would get billed to billed classes | |
3069 | (classes with lease limitations) was fixed. Non-active leases OFFERed | |
3070 | to clients are no longer billed (but billing is checked before offering). | |
3071 | ||
3072 | - The dhcpd.conf.5 manpage was updated in regard to the ddns-domainname | |
3073 | configuration option - the default configuration and results should be | |
3074 | more clear now. | |
3075 | ||
3076 | - If the dhclient were to receive a DHCPNAK while it was in the RENEW | |
3077 | state (and consequently, had an active, 'bound' address and related | |
3078 | configuration options), it would fail to 'tear down' this information | |
3079 | before proceeding into INIT state. dhclient now iterates the dhclient- | |
3080 | script with the 'EXPIRE' action to cause these teardowns prior to entering | |
3081 | INIT state. Thanks to a patch from Chris Zimmerman. | |
3082 | ||
3083 | - The omapi.1 manpage had some formatting errors repaired thanks to a patch | |
3084 | from Yoshihiko Sarumaru. | |
3085 | ||
3086 | - A few lines of code that were failover-specific were moved within | |
3087 | #if defined() clauses so that compilation without failover could be | |
3088 | made possible. | |
3089 | ||
3090 | - The log message emitted when the 'leased-address' value was not available | |
3091 | in dhcpd.conf "executable statements" has been updated to be more helpful. | |
3092 | Manpage information for this value has also been updated. | |
3093 | ||
3094 | - Abandoned or dissociated (err condition) leases now remove any related | |
3095 | dynamic dns bindings. Thanks to a patch from Patrick Schoo. | |
3096 | ||
3097 | - Attempting to write a new lease file to replace a corrupt (due to | |
3098 | encountering non-retryable errors during writing) lease file should | |
3099 | no longer result in an infinite recursion. | |
3100 | ||
3101 | - Host declaration hardware addresses and client identifiers may only be | |
3102 | configured once. dhcpd will now fail to load config files that specify | |
3103 | multiple identifiers (previous versions would silently over-ride the | |
3104 | value with the later configured value). | |
3105 | ||
3106 | - Several option codes that have been allocated since our last release | |
3107 | have been named and documented. | |
3108 | ||
3109 | - Option names of the form "unknown-123" have been removed from the in- | |
3110 | memory hash tables. In order to support options of these names that | |
3111 | may appear in dhclient.leases or similar in previous versions, the | |
3112 | parser will now find the new option code definition, or mock up a | |
3113 | generic option code definition. This should result in a smooth | |
3114 | transition from one name to the other, as the new name is used to | |
3115 | write new output. | |
3116 | ||
3117 | Changes since 3.0.4rc1 | |
3118 | ||
3119 | - The dhcp-options.5 manpage was updated to correct indentation errors | |
3120 | thanks to a patch from Jean Delvare. | |
3121 | ||
3122 | Changes since 3.0.4b3 | |
3123 | ||
3124 | - Some manual pages were clarified pursuant to discussion on the dhcp-server | |
3125 | mailing list. | |
3126 | ||
3127 | Changes since 3.0.4b2 | |
3128 | ||
3129 | - Null-termination sensing for certain clients that unfortunately require | |
3130 | it in DHCPINFORM processing was repaired. | |
3131 | ||
3132 | - The host-name option and a few others were moved from "X" format to "t" | |
3133 | format to be compatible with new NULL handling functions. | |
3134 | ||
3135 | - DHCPINFORM processing is a little more careful about return addressing | |
3136 | its responses, or if responding via a relay. The INFORM related | |
3137 | messages also log the 'effective client ip address' rather than the | |
3138 | client's supplied ciaddr (since some clients produce null ciaddrs). | |
3139 | ||
3140 | - The server was inappropriately sending leases to the RESET state in the | |
3141 | event that multiple active leases were found to match a singly-identified | |
3142 | client. This was changed to RELEASED (by accepting a different, ACTIVE | |
3143 | binding, the client is implicitly releasing its lease). This repairs a | |
3144 | bug wherein secondary servers in failover pairs detecting this condition | |
3145 | move leases to RESET, and primaries refuse to accept that state | |
3146 | transition (properly). | |
3147 | ||
3148 | - The memset-after-dmalloc() changes made in 3.0.4b1 have been backed out. | |
3149 | ||
3150 | Changes since 3.0.4b1 | |
3151 | ||
3152 | - Command line parsing in omshell was repaired - it no longer closes | |
3153 | STDIN after reading one line. | |
3154 | ||
3155 | - The resolver library no longer closes the /etc/resolv.conf file | |
3156 | descriptor it opened twice. | |
3157 | ||
3158 | - Changes to trailing NULL removal in 't' option-atoms has been rethought, | |
3159 | it now includes 'd' (domain name) types, and tries hard not to rewind an | |
3160 | option beyond the start of the text field it is un-terminating. | |
3161 | ||
3162 | Changes since 3.0.3 | |
3163 | ||
3164 | - A DDNS update handling function was misusing the DNS error codes, rather | |
3165 | than the internal generic result enumeration. The result is a confusing | |
3166 | syslog line, logging the wrong condition. | |
3167 | ||
3168 | - The DHCP Server was not checking pool balance in the case where it brought | |
3169 | a non-ACTIVE lease out of storage for a client that was returning to use | |
3170 | a lease it once had long ago, and had since expired. | |
3171 | ||
3172 | - Failover peers no longer bother to look for free leases to allocate when | |
3173 | they already found the client's ACTIVE lease. DISCOVERs are load balanced | |
3174 | whether freely-allocated or not, unless the server doubts the peer has | |
3175 | leases to allocate. | |
3176 | ||
3177 | - Fixed a bug in dhcrelay agent addition code that suppressed trailing | |
3178 | PAD options - it was suppressing only one trailing PAD option, rather | |
3179 | than the entire block of them. | |
3180 | ||
3181 | ! Fixed some unlikely overlapping-region memcpy() bugs in dhcrelay agent | |
3182 | option addition and stripping code. Added a few sanity checks. Although | |
3183 | highly improbable, due to requiring the reception of a DHCP datagram well | |
3184 | in excess of all known to be used physical MTU limitations, it is possible | |
3185 | this may have been used in a stack overflow security vulnerability. Thanks | |
3186 | to a patch from infamous42md. | |
3187 | ||
3188 | ! Added some sanity checks to OMAPI connection/authentication code. | |
3189 | Although highly improbable, due to having to deliver in excess of 2^32 | |
3190 | bytes of data via the OMAPI channel, not to mention requiring dhcpd to | |
3191 | be able to malloc() a memory region 2^32 bytes in size, it was possible | |
3192 | this might have resulted in a heap overflow security vulnerability. | |
3193 | Thanks to a patch from infamous42md. | |
3194 | ||
3195 | - dmalloc() memset()'s the non-debug (data) portion of the allocated | |
3196 | memory to zero. Code that memset()'s the result returned by dmalloc() to | |
3197 | zero is redundant. These redundancies were removed. | |
3198 | ||
3199 | - Some type declaration corrections to u_int16_t were made in common/tr.c | |
3200 | (Token Ring support) thanks to a patch from Jason Vas Dias at Red Hat. | |
3201 | ||
3202 | - A failover bug that was allowing leases that EXPIRED or were RELEASED | |
3203 | where tsfp and tstp are identical timestamps to languish in these | |
3204 | transitional states has been repaired. As a side effect, lease | |
3205 | databases should be kept more consistent overall, not just for these | |
3206 | transitional states. | |
3207 | ||
3208 | - If the lease db is deleted out from under the daemon, and it moves to rewrite | |
3209 | the db, it will go ahead with the operation and move the new db into place | |
3210 | once it detects the old db does not exist. | |
3211 | ||
3212 | - dhclient now ignores IRDA, SIT, and IEEE1394 network interfaces, as it | |
3213 | is either nonsensical or (in the case of IEEE1394) is not known to support | |
3214 | these interfaces. Thanks to Marius Gedminas and Andrew Pollock of Debian. | |
3215 | ||
3216 | - Some previously undocumented reasons for dhclient-script invoking has | |
3217 | been documented in the dhclient-script.8 manpage. | |
3218 | ||
3219 | - Failover potential expiry calculations (TSTP) have been corrected. Results | |
3220 | should be substantially more consistent, and proper given the constraints. | |
3221 | ||
3222 | - Adjusted lease state validation checks in potential-conflict, to | |
3223 | account for possible clock skew similarly to normal state, and several | |
3224 | previously illegal transitions were made legal (ex: active->released). | |
3225 | ||
3226 | - An impossible sanity check was removed from omapi/buffer.c, thanks to a | |
3227 | patch from 'infamous42md'. | |
3228 | ||
3229 | - An OMAPI host/network byte order problem in lease time values has been | |
3230 | repaired. | |
3231 | ||
3232 | - Several minor bugs, largely relating to treating 8-byte time values as | |
3233 | 4-byte entities, have been repaired after careful review of the FreeBSD | |
3234 | ports collection's patch set. Thanks to the nameless entities who have | |
3235 | contributed to the FreeBSD ports. | |
3236 | ||
3237 | - When writing a trace file, the file is now created with permissions 0600, | |
3238 | to help administrators avoid accidentally publicising sensitive config | |
3239 | data. | |
3240 | ||
3241 | - The calculation of the maximum size of DHCP packets no longer includes | |
3242 | Ethernet framing overhead. The result is that the 'Maximum Message | |
3243 | Size' option advertised by clients, or the default value 576, is no | |
3244 | longer reduced by 14 bytes, and instead directly reflects the IP level | |
3245 | MTU (and the default, minimum allowed IP MTU of 576). | |
3246 | ||
3247 | - The special status of RELEASED/EXPIRED/RESET leases when a server | |
3248 | is operating in partner-down was fixed. It no longer requires a | |
3249 | lease be twice the MCLT beyond STOS to 'reallocate', and the expiry | |
3250 | event to turn these into FREE leases without peer acknowledgement | |
3251 | (after STOS+MCLT) has been repaired. | |
3252 | ||
3253 | - Compilation on older Solaris systems (lacking /usr/include/sys/int_types.h) | |
3254 | has been repaired. | |
3255 | ||
3256 | - "append"ing a string onto the end of a "t" type option (such as the | |
3257 | domain-name field) that had been improperly NULL-terminated by the | |
3258 | DHCP server will no longer result in a truncated string containing | |
3259 | only the option from the server, and not the expected appended value. | |
3260 | Thanks to a patch from Jason Vas Dias at Red Hat. | |
3261 | ||
3262 | - File handlers on configuration state (config files and lease dbs) should | |
3263 | be treated consistently, regardless of whether TRACING is defined or not. | |
3264 | ||
3265 | - The Linux build environment has had some minor improvements - better | |
3266 | sensing of 64-bit pointer sizes (only used for establishing an icmp_id), | |
3267 | and corrections to #if operators regarding LINUX_MAJOR should it ever | |
3268 | move to 3.[01].x. | |
3269 | ||
3270 | - The server now tries harder to survive the condition where it is unable | |
3271 | to open a new lease file to rewrite the lease state database. | |
3272 | ||
3273 | Changes since 3.0.3b3 | |
3274 | ||
3275 | - dhclient.conf documentation for interface {} was updated to reflect recent | |
3276 | discussion on the dhcp-hackers mailing list. | |
3277 | ||
3278 | - In response to reports that the software does not compile on GCC 4.0.0, | |
3279 | -Werror was removed from Makefile.conf for all platforms that used it. | |
3280 | We will address the true problem in a future release; this is a temporary | |
3281 | workaround. | |
3282 | ||
3283 | Changes since 3.0.3b2 | |
3284 | ||
3285 | - An error in code changes introduced in 3.0.3b2 was corrected, which caused | |
3286 | static BOOTP clients to receive random addresses. | |
3287 | ||
3288 | Changes since 3.0.3b1 | |
3289 | ||
3290 | - A bug was fixed in BOOTPREQUEST handling code wherein stale references to | |
3291 | host records would be left behind on leases that were not allocated to the | |
3292 | client currently booting (eg in the case where the host was denied booting). | |
3293 | ||
3294 | - The dhcpd.conf.5 manpage was updated to be more clear in regards to | |
3295 | multiple host declarations (thanks to Vincent McIntyre). 'Interim' style | |
3296 | dynamic updates were also retouched. | |
3297 | ||
3298 | Changes since 3.0.2 | |
3299 | ||
3300 | - A bug was fixed where a server might load balance a DHCP REQUEST to its | |
3301 | peer after already choosing not to load balance the preceding DISCOVER. | |
3302 | The peer cannot allocate the originating server's lease. | |
3303 | ||
3304 | - In the case where a secondary server lost its stable storage while the | |
3305 | primary was still in communications-interrupted, and came back online, | |
3306 | the lease databases would not be fully transferred to the secondary. | |
3307 | This was due to the secondary errantly sending an extra UPDREQ message | |
3308 | when the primary made its state transition to PARTNER-DOWN known. | |
3309 | ||
3310 | - The package will now compile cleanly in gcc 3.3 and 3.4. As a side effect, | |
3311 | lease structures will be 9 bytes smaller on all platforms. Thanks to | |
3312 | Jason Vas Dias at Red Hat. | |
3313 | ||
3314 | - Interface discovery code in DISCOVER_UNCONFIGURED mode is now | |
3315 | properly restricted to only detecting broadcast interfaces. Thanks | |
3316 | to a patch from Jason Vas Dias at Red Hat. | |
3317 | ||
3318 | - decode_udp_ip_header was changed so that the IP address was copied out | |
3319 | to a variable, rather than referenced by a pointer. This enforces 4-byte | |
3320 | alignment of the 32-bit IP address value. Thanks to a patch from Dr. | |
3321 | Peter Poeml. | |
3322 | ||
3323 | - An incorrect log message was corrected thanks to a patch from | |
3324 | Dr. Peter Poeml. | |
3325 | ||
3326 | - A bug in DDNS was repaired, where if the server's first DDNS action was | |
3327 | a DDNS removal rather than a DDNS update, the resolver library's | |
3328 | retransmit timer and retry timer was set to the default, implying a | |
3329 | 15 second timeout interval. Which is a little excessive in a synchronous, | |
3330 | single-threaded system. In all cases, ISC DHCP should now hold fast to | |
3331 | a 1-second timeout, trying only once. | |
3332 | ||
3333 | - The siaddr field was being improperly set to the server-identifier when | |
3334 | responding to DHCP messages. RFC2131 clarified the siaddr field as | |
3335 | meaning the 'next server in the bootstrap process', eg a tftp server. | |
3336 | The siaddr field is now left zeroed unless next-server is configured. | |
3337 | ||
3338 | - mockup_lease() could have returned in an error condition (or in the | |
3339 | condition where no fixed-address was found matching the shared | |
3340 | network) with stale references to a host record. This is probably not | |
3341 | a memory leak since host records generally never die anyway. | |
3342 | ||
3343 | - A bug was repaired where failover servers would let stale client identifiers | |
3344 | persist on leases that were reallocated to new clients not sending an id. | |
3345 | ||
3346 | - Binding scopes ("set var = value;") are now removed from leases allocated | |
3347 | by failover peers if the lease had expired. This should help reduce the | |
3348 | number of stale binding scopes on leases. | |
3349 | ||
3350 | - A small memory leak was closed involving client identifiers larger than | |
3351 | 7 bytes, and failover. | |
3352 | ||
3353 | - Configuring a subnet in dhcpd.conf with a subnet mask of 32 bits might | |
3354 | cause an internal function to overflow heap. Thanks to Jason Vas Dias | |
3355 | at Red Hat. | |
3356 | ||
3357 | - Some inconsistencies in treating numbers that the lexer parsed as 'NUMBER' | |
3358 | or 'NUMBER_OR_NAME' was repaired. Hexadecimal parsing is affected, and | |
3359 | should work better. | |
3360 | ||
3361 | - In several cases, parse warnings were being issued before the lexical | |
3362 | token had been advanced to the token whose value was causing an error... | |
3363 | causing parse warnings to claim the problem is on the wrong token. | |
3364 | ||
3365 | - Host declarations matching on client identifier for dynamic leases will | |
3366 | no longer match fixed-address host declarations (this is now identical | |
3367 | to behaviour for host records matching on hardware address). | |
3368 | ||
3369 | Changes since 3.0.2rc3 | |
3370 | ||
3371 | - A previously undocumented configuration directive, 'local-address', | |
3372 | was documented in the dhcpd.conf manpage. | |
3373 | ||
3374 | Changes since 3.0.2rc2 | |
3375 | ||
3376 | - Two variables introduced in 3.0.2b1 were used without being initialized | |
3377 | in the case where neither the FILE nor SNAME fields were available for | |
3378 | overloading. This was repaired. | |
3379 | ||
3380 | - A heretofore believed to be impossible corner case of the option | |
3381 | overloading implementation turned out to be possible ("Unable to sort | |
3382 | overloaded options after 10 tries."). The implementation was reworked | |
3383 | to consider the case of an option so large it would require more than | |
3384 | three chunks to fit. | |
3385 | ||
3386 | - Many other instances of variables being used without being initialized | |
3387 | were repaired. | |
3388 | ||
3389 | - An uninitialized variable in omapi_io_destroy() led to the discovery | |
3390 | that this function may result in orphaned pointers (and hence, a memory | |
3391 | leak). | |
3392 | ||
3393 | Changes since 3.0.2rc1 | |
3394 | ||
3395 | - allocate_lease() was rewritten to repair a bug in which the server would | |
3396 | try to allocate an ABANDONED lease when FREE leases were available. | |
3397 | ||
3398 | Changes since 3.0.2b1 | |
3399 | ||
3400 | - Some dhcp-eval.5 manpage formatting was repaired. | |
3401 | ||
3402 | Changes since 3.0.1 | |
3403 | ||
3404 | - A bug was fixed in the server's 'option overloading' implementation, | |
3405 | where options loaded into the 'file' and 'sname' packet fields were | |
3406 | not aligned precisely as rfc2131 dictates. | |
3407 | ||
3408 | - The FreeBSD client script was changed to support the case where a domain | |
3409 | name was not provided by the server. | |
3410 | ||
3411 | - A memory leak in 'omshell' per each command line parsed was | |
3412 | repaired, thanks to a patch from Jarkko Torppa. | |
3413 | ||
3414 | - Log functions writing to stderr were adjusted to use the STDERR_FILENO | |
3415 | system definition rather than '2'. This is a no-op for 90% of platforms. | |
3416 | ||
3417 | - One call to trace_write_packet_iov() counted the number of io vectors | |
3418 | incorrectly, causing inconsistent tracefiles. This was fixed. | |
3419 | ||
3420 | - Some expression parse failure memory leaks were closed. | |
3421 | ||
3422 | - A host byte order problem in tracefiles was repaired. | |
3423 | ||
3424 | - Pools configured in DHCPD for failover possessing permission lists that | |
3425 | previously were assumed to not include dynamic bootp clients are now | |
3426 | a little more pessimistic. The result is, dhcpd will nag you about just | |
3427 | about most pools that possess a 'allow' statement with no 'deny' that | |
3428 | would definitely match a dynamic bootp client. | |
3429 | ||
3430 | - The 'ddns-update-style' configuration warning bit now insists that | |
3431 | the configuration be globally scoped. | |
3432 | ||
3433 | - Two memory leaks in dhclient were closed thanks to a patch from Felix | |
3434 | Farkas. | |
3435 | ||
3436 | - Some minor but excellently pedantic documentation errors were fixed | |
3437 | thanks to a patch from Thomas Klausner. | |
3438 | ||
3439 | - Bugs in operator precedence in executable statements have been repaired | |
3440 | once again. More legal syntaxes should be parsed legally. | |
3441 | ||
3442 | - Failing to initialize a tracefile for any reason if a tracefile was | |
3443 | specified is now a fatal error. Thanks to a patch from Albert Herranz. | |
3444 | ||
3445 | - Corrected a bug in which the number of leases transferred as calculated | |
3446 | by the failover primary and sent to peers in POOLRESP responses may be | |
3447 | incorrect. This value is not believed to be used by other failover | |
3448 | implementations, excepting perhaps as logged information. | |
3449 | ||
3450 | - Corrected a bug in which 'dhcp_failover_send_poolresp()' was in fact | |
3451 | sending POOLREQ messages instead of POOLRESP mesasges. This message | |
3452 | was essentially ignored since failover secondaries effectively do not | |
3453 | respond to POOLREQ messages. | |
3454 | ||
3455 | - Type definitions for various bitwidths of integers in the sunos5-5 | |
3456 | build of ISC DHCP have been fixed. It should compile and run more | |
3457 | easily when built in 64-bit for this platform. | |
3458 | ||
3459 | - "allow known-clients;" is now a legal syntax, to avoid confusion. | |
3460 | ||
3461 | - If one dhcp server chooses to 'load balance' a request to its failover | |
3462 | peer, it first checks to see if it believes said peer has a free | |
3463 | lease to allocate before ignoring the DISCOVER. | |
3464 | ||
3465 | - log() was logging a work buffer, rather than the value returned by | |
3466 | executing the statements configured by the user. In some cases, | |
3467 | the work buffer and the intended results were the same. In some other | |
3468 | cases, they were not. This was fixed thanks to a patch from Gunnar | |
3469 | Fjone and directconnect.no. | |
3470 | ||
3471 | - Compiler warnings for some string type conversions was fixed, thanks | |
3472 | to Andreas Gustafsson. | |
3473 | ||
3474 | - The netbsd build environments were simplified to one, in which | |
3475 | -Wconversion is not used, thanks to Andreas Gustafsson. | |
3476 | ||
3477 | - How randomness in the backoff-cutoff dhclient configuration variable | |
3478 | is implemented was better documented in the manpage, and the behaviour | |
3479 | of dhclient in REQUEST timeout handling was changed to match that of | |
3480 | DISCOVER timeout handling. | |
3481 | ||
3482 | - Omapi was hardened against clients that pass in null values, thanks | |
3483 | to a patch from Mark Jason Dominus. | |
3484 | ||
3485 | - A bug was fixed in dhclient that kept it from doing client-side | |
3486 | ddns updates. Thanks to a patch from Andreas Gustafsson, which | |
3487 | underwent some modification after review by Jason Vas Dias. | |
3488 | ||
3489 | - Failover implementations disconnected due to the network between | |
3490 | them (rather than one of the two shutting down) will now try to | |
3491 | re-establish the failover connection every 5 seconds, rather than | |
3492 | to simply try once and give up until one of them is restarted. | |
3493 | Thanks to a patch from Ulf Ekberg from Infoblox, and field testing | |
3494 | by Greger V. Teigre which led to an enhancement to it. | |
3495 | ||
3496 | - A problem that kept DHCP Failover secondaries from tearing down | |
3497 | ddns records was repaired. Thanks to a patch from Ulf Ekberg from | |
3498 | Infoblox. | |
3499 | ||
3500 | - 64bit pointer sizes are detected properly on FreeBSD now. | |
3501 | ||
3502 | - A bug was repaired where the DHCP server would leave stale references | |
3503 | to host records on leases it once thought about offering to certain | |
3504 | clients. The result would be to apply host and 'known' scopes to the | |
3505 | wrong clients (possibly denying booting). NOTE: The 'mis-host' patch | |
3506 | that was being circulated as a workaround is not the way this bug was | |
3507 | fixed. If you were a victim of this bug in 3.0.1, you are cautioned | |
3508 | to proceed carefully and see if it fixes your problem. | |
3509 | ||
3510 | - A bug was repaired in the server's DHCPINFORM handling, where it | |
3511 | tried to divine the client's address from the source packet and | |
3512 | would get it wrong. Thanks to Anshuman Singh Rawat. | |
3513 | ||
3514 | - A log message was introduced to help illuminate the case where the | |
3515 | server was unable to find a lease to assign to any BOOTP client. | |
3516 | Thanks to Daniel Baker. | |
3517 | ||
3518 | - A minor dhcpd.conf.5 manpage error was fixed. | |
3519 | ||
3520 | Changes since 3.0.1rc14 | |
3521 | ||
3522 | - The global variable 'cur_time' was centralized and is now uniformly of a | |
3523 | type #defined in system-dependent headers. It had previously been defined | |
3524 | in one of many places as a 32-bit value, and this causes mayhem on 64-bit | |
3525 | big endian systems. It probably wasn't too healthy on little endian | |
3526 | systems either. | |
3527 | ||
3528 | - A printf format string error introduced in rc14 was repaired. | |
3529 | ||
3530 | - AIX system-dependent header file was altered to only define NO_SNPRINTF | |
3531 | if the condition used to #ifdef in vsnprintf in AIX' header files | |
3532 | is false. | |
3533 | ||
3534 | - The Alpha/OSF system-dependent header file was altered to define | |
3535 | NO_SNPRINTF on OS revisions older than 4.0G. | |
3536 | ||
3537 | - omapip/test.c had string.h added to its includes. | |
3538 | ||
3539 | Changes since 3.0.1rc13 | |
3540 | ||
3541 | ! CAN-2004-0460 - CERT VU#317350: Five stack overflow exploits were closed | |
3542 | in logging messages with excessively long hostnames provided by the | |
3543 | clients. It is highly probable that these could have been used by | |
3544 | attackers to gain arbitrary root access on systems using ISC DHCP 3.0.1 | |
3545 | release candidates 12 or 13. Special thanks to Gregory Duchemin for | |
3546 | both finding and solving the problem. | |
3547 | ||
3548 | ! CAN-2004-0461 - CERT VU#654390: Once the above was closed, an opening | |
3549 | in log_*() functions was evidenced, on some specific platforms where | |
3550 | vsnprintf() was not believed to be available and calls were wrapped to | |
3551 | sprintf() instead. Again, credit goes to Gregory Duchemin for finding | |
3552 | the problem. Calls to snprintf() are now linked to a distribution-local | |
3553 | snprintf implementation, only in those cases where the architecture is | |
3554 | not known to provide one (see includes/cf/[arch].h). If you experience | |
3555 | linking problems with snprintf/vsnprintf or 'isc_print_' functions, this | |
3556 | is where to look. This vulnerability did not exist in any previously | |
3557 | published version of ISC DHCP. | |
3558 | ||
3559 | - Compilation on hpux 11.11 was repaired. | |
3560 | ||
3561 | - 'The cross-compile bug fix' was backed out. | |
3562 | ||
3563 | Changes since 3.0.1rc12 | |
3564 | ||
3565 | - Fixed a bug in omapi lease lookup function, to form the hardware | |
3566 | address for the hash lookup correctly, thanks to a patch from | |
3567 | Richard Hirst. | |
3568 | ||
3569 | - Fixed a bug where dhcrelay was sending relayed responses back to the | |
3570 | broadcast address, but with the source's unicast mac address. Should | |
3571 | now conform to rfc2131 section 4.1. | |
3572 | ||
3573 | - Cross-compile bug fix; use $(AR) instead of ar. Thanks to Morten Brorup. | |
3574 | ||
3575 | - Fixed a crash bug in dhclient where dhcpd servers that do not provide | |
3576 | renewal times results in an FPE. As a side effect, dhclient can now | |
3577 | properly handle 0xFFFFFFFF (-1) expiry times supplied by servers. Thanks | |
3578 | to a patch from Burt Silverman. | |
3579 | ||
3580 | - The 'ping timeout' debugs from rc12 were removed to -DDEBUG only, | |
3581 | and reformatted to correct a compilation error on Solaris platforms. | |
3582 | ||
3583 | - A patch was applied which fixes a case where leases read from the | |
3584 | leases database do not properly over-ride previously read leases. | |
3585 | ||
3586 | - dhcpctl.3 manpage was tweaked. | |
3587 | ||
3588 | Changes since 3.0.1rc11 | |
3589 | ||
3590 | - A patch from Steve Campbell was applied with minor modifications to | |
3591 | permit reverse dns PTR record updates with values containing spaces. | |
3592 | ||
3593 | - A patch from Florian Lohoff was applied with some modifications to | |
3594 | dhcrelay. It now discards packets whose hop count exceeds 10 by default, | |
3595 | and a command-line option (-c) can be used to set this threshold. | |
3596 | ||
3597 | - A failover bug relating to identifying peers by name length instead of | |
3598 | by name was fixed. | |
3599 | ||
3600 | - Declaring failover configs within shared-network statements should no | |
3601 | longer result in error. | |
3602 | ||
3603 | - The -nw command line option to dhclient now works. | |
3604 | ||
3605 | - Thanks to a patch from Michael Richardson: | |
3606 | - Some problems with long option processing have been fixed. | |
3607 | - Some fixes to minires so that updates of KEY records will work. | |
3608 | ||
3609 | - contrib/ms2isc was updated by Shu-Min Chang of the Intel Corporation. | |
3610 | see contrib/ms2isc/readme.txt for revision notes. | |
3611 | ||
3612 | - Dhclient no longer uses shell commands to kill another instance of | |
3613 | itself, it sends the signal directly. Thanks to a patch from Martin | |
3614 | Blapp. | |
3615 | ||
3616 | - The FreeBSD dhclient-script was changed so that a failure to write to | |
3617 | /etc/resolv.conf does not prematurely end the script. This keeps dhclient | |
3618 | from looping infinitely when this is the case. Thanks to a patch from | |
3619 | Martin Blapp. | |
3620 | ||
3621 | - A patch from Bill Stephens was applied which resolves a problem with lease | |
3622 | expiry times in failover configurations. | |
3623 | ||
3624 | - A memory leak in configuration parsing was closed thanks to a patch from | |
3625 | Steve G. | |
3626 | ||
3627 | - The function which discovers interfaces will now skip non-broadcast or | |
3628 | point-to-point interfaces, thanks to a patch from David Brownlee. | |
3629 | ||
3630 | - Options not yet known by the dhcpd or dhclient have had their names | |
3631 | changed such that they do not contain # symbols, in case they should ever | |
3632 | appear in a lease file. An option that might have been named "#144" is | |
3633 | now "unknown-144". | |
3634 | ||
3635 | - Another patch from Bill Stephens which allows the ping-check timeout to | |
3636 | be configured as 'ping-timeout'. Defaults to 1. | |
3637 | ||
3638 | Changes since 3.0.1rc10 | |
3639 | ||
3640 | - Potential buffer overflows in minires repaired. | |
3641 | ||
3642 | - A change to the linux client script to use /bin/bash, since /bin/sh may | |
3643 | not be bash. | |
3644 | ||
3645 | - Some missing va_end cleanups thanks to a patch from Thomas Klausner. | |
3646 | ||
3647 | - A correction of boolean parsing syntax validation - some illegal syntaxes | |
3648 | that worked before are now detected and produce errs, some legal syntaxes | |
3649 | that errored before will now work properly. | |
3650 | ||
3651 | - Some search-and-replace errors that caused some options to change their | |
3652 | names was repaired. | |
3653 | ||
3654 | - Shu-min Chang of the Intel corporation has contributed a perl script and | |
3655 | module that converts the MS NT4 DHCP configuration to a ISC DHCP3 | |
3656 | configuration file. | |
3657 | ||
3658 | - Applied the remainder of the dhcpctl memory leak patch provided by Bill | |
3659 | Squier at ReefEdge, Inc. (groo@reefedge.com). | |
3660 | ||
3661 | - Missing non-optional failover peer configurations will now result in a soft | |
3662 | error rather than a null dereference. | |
3663 | ||
3664 | Changes since 3.0.1rc9 | |
3665 | ||
3666 | - A format string was corrected to fix compiler warnings. | |
3667 | ||
3668 | - A number of spelling corrections were made in the man pages. | |
3669 | ||
3670 | - The dhclient.conf.5 man page was changed to refer to do-forward-updates | |
3671 | rather than a configuration option that doesn't exist. | |
3672 | ||
3673 | - A FreeBSD-specific bug in the interface removal handling was fixed. | |
3674 | ||
3675 | - A Linux-specific Token Ring detection problem was fixed. | |
3676 | ||
3677 | - Hashes removed from as-yet-unknown agent options, having those options | |
3678 | appear in reality before we know about them will no longer produce | |
3679 | self-corrupting lease databases. | |
3680 | ||
3681 | - dhclient will use the proper port numbers now when using the -g option. | |
3682 | ||
3683 | - A order-of-operations bug with 2 match clauses in 1 class statement is | |
3684 | fixed thanks to a patch from Andrew Matheson. | |
3685 | ||
3686 | - Compilation problems on Solaris were fixed. | |
3687 | ||
3688 | - Compilation problems when built with DEBUG or DEBUG_PACKET were repaired. | |
3689 | ||
3690 | - A fix to the dhcp ack process which makes certain group options will be | |
3691 | included in the first DHCPOFFER message was made thanks to a patch from | |
3692 | Ling Gou. | |
3693 | ||
3694 | - A few memory leaks were repaired thanks to patches from Bill Squier at | |
3695 | ReefEdge, Inc. (groo@reefedge.com). | |
3696 | ||
3697 | - A fix for shared-networks that sometimes give clients options for the | |
3698 | wrong subnets (in particular, 'option routers') was applied, thanks to | |
3699 | Ted Lemon for the patch. | |
3700 | ||
3701 | - Omshell's handling of dotted octets as values was changed such that dots | |
3702 | one after the other produce zero values in the integer string. | |
3703 | ||
3704 | Changes since 3.0.1rc8 | |
3705 | ||
3706 | - Fix a format string vulnerability in the server that could lead to a | |
3707 | remote root compromise (discovered by NGSEC Research Team, www.ngsec.com). | |
3708 | ||
3709 | - Add additional support for NetBSD/sparc64. | |
3710 | ||
3711 | - Fix a bug in the command-line parsing of the client. Also, resolve | |
3712 | a memory leak. | |
3713 | ||
3714 | - Add better support for shells other than bash in the Linux client | |
3715 | script. | |
3716 | ||
3717 | - Various build fixes for modern versions of FreeBSD and Linux. | |
3718 | ||
3719 | - Fix a bad bounds check when printing binding state names. | |
3720 | ||
3721 | - Clarify documentation about fixed-address and multiple addresses. | |
3722 | ||
3723 | - Fix a typo in the authoritative error message. | |
3724 | ||
3725 | - Make a log entry when we can't write a billing class. | |
3726 | ||
3727 | - Use conversion targets that are the right size on all architectures. | |
3728 | ||
3729 | - Increment the hop count when relaying. | |
3730 | ||
3731 | - Log a message when lease state is changed through OMAPI. | |
3732 | ||
3733 | - Don't rerun the shared_network when evaluating the pool. | |
3734 | ||
3735 | - Fix a reversed test in the parser. | |
3736 | ||
3737 | - Change the type of rbuf_max. | |
3738 | ||
3739 | - Make FTS_LAST a manifest constant to quiet warnings. | |
3740 | ||
3741 | Changes since 3.0.1rc7 | |
3742 | ||
3743 | - Fix two compiler warnings that are generated when compiling on Solaris | |
3744 | with gcc. These stop the build, even though they weren't actually | |
3745 | errors, because we prefer that our builds generate no warnings. | |
3746 | ||
3747 | Changes since 3.0.1rc6 | |
3748 | ||
3749 | - Don't allow a lease that's in the EXPIRED, RELEASED or RESET state | |
3750 | to be renewed. | |
3751 | ||
3752 | - Implement lease stealing for cases where the primary has fewer leases | |
3753 | than the secondary, as called for by the standard. | |
3754 | ||
3755 | - Add a fudge factor to the lease expiry acceptance code, (suggested | |
3756 | by Kevin Miller of CMU). | |
3757 | ||
3758 | - Fix a bug in permit_list_match that made it much too willing to say | |
3759 | that two permit lists matched. | |
3760 | ||
3761 | - Unless DEBUG_DNS_UPDATES is defined, print more user-friendly (and | |
3762 | also more compact) messages about DNS updates. | |
3763 | ||
3764 | - Fix a bug in generating wire-format domain names for the FQDN option. | |
3765 | ||
3766 | - Fix a bug where the FQDN option would not be returned if the client | |
3767 | requested it, contrary to the standard. | |
3768 | ||
3769 | - On Darwin, use the FreeBSD DHCP client script. | |
3770 | ||
3771 | - On NetBSD/sparc, don't check for casting warnings. | |
3772 | ||
3773 | - Add a flag in the DHCP client to disable updating the client's A | |
3774 | record when sending an FQDN option indicating that the client is | |
3775 | going to update its A record. | |
3776 | ||
3777 | - In the client, don't attempt a DNS update until one second after | |
3778 | configuring the new IP address, and if the update times out, keep | |
3779 | trying until a response, positive or negative, is received from the | |
3780 | DNS server. | |
3781 | ||
3782 | - Fix an uninitialized memory bug in the DHCP client. | |
3783 | ||
3784 | - Apply some FreeBSD-specific bug fixes suggested by Murray Stokely. | |
3785 | ||
3786 | - Fix a bug in ns_parserr(), where it was returning the wrong sort | |
3787 | of result code in some cases (suggested by Ben Harris of the | |
3788 | NetBSD project). | |
3789 | ||
3790 | - Fix a bug in is_identifier(), where it was checking against EOF | |
3791 | instead of the END_OF_FILE token (also suggested by Ben Harris). | |
3792 | ||
3793 | - Fix a bug where if an option universe contained no options, the | |
3794 | DHCP server could dump core (Walter Steiner). | |
3795 | ||
3796 | - Fix a bug in the handling of encapsulated options. | |
3797 | ||
3798 | - Fix a bug that prevented NWIP suboptions from being processed. | |
3799 | ||
3800 | - Delete the FTS_BOOTP and FTS_RESERVED states and implement them | |
3801 | as modifier flags to the FTS_ACTIVE state, as called for in the | |
3802 | failover protocol standard. | |
3803 | ||
3804 | - Fix bugs in the pool merging code that resulted in references and | |
3805 | dereferences of null pointers. This bug had no impact unless the | |
3806 | POINTER_DEBUG flag was defined. | |
3807 | ||
3808 | - In the server, added a do-forward-updates flag that can be used to | |
3809 | disable forward updates in all cases, so that sites that want the | |
3810 | clients to take sole responsibility for updating their A record can | |
3811 | do so. | |
3812 | ||
3813 | - Make it possible to disable optimization of PTR record updates. | |
3814 | ||
3815 | Changes since 3.0.1rc5 | |
3816 | ||
3817 | - Include some new documentation and changes provided by Karl Auer. | |
3818 | ||
3819 | - Add a workaround for some Lexmark printers that send a double-NUL- | |
3820 | terminated host-name option, which would break DNS updates. | |
3821 | ||
3822 | - Fix an off-by-one error in the MAC-address checking code for | |
3823 | DHCPRELEASE that was added in 3.0.1rc5. | |
3824 | ||
3825 | - Fix a bug where client-specific information was not being discarded | |
3826 | from the lease when it expired or was released, resulting in | |
3827 | problems if the lease was reallocated to a different client. | |
3828 | ||
3829 | - If more than one allocation pool is specified that has the same set | |
3830 | of constraints as another allocation pool on the same shared | |
3831 | network, merge the two pools. | |
3832 | ||
3833 | - Don't print an error in fallback_discard, since this just causes | |
3834 | confusion and does not appear to be helping to encourage anyone to | |
3835 | fix this bug. | |
3836 | ||
3837 | Changes since 3.0.1rc4 | |
3838 | ||
3839 | - Fix a bug that would cause the DHCP server to spin if asked to parse | |
3840 | a certain kind of incorrect statement. | |
3841 | ||
3842 | - Fix a related bug that would prevent an error from being reported in | |
3843 | the same case. | |
3844 | ||
3845 | - Additional documentation. | |
3846 | ||
3847 | - Make sure that the hardware address matches the lease when | |
3848 | processing a DHCPRELEASE message. | |
3849 | ||
3850 | Changes since 3.0.1rc3 | |
3851 | ||
3852 | - A minor bug fix in the arguments to a logging function call. | |
3853 | - Documentation update for dhcpd.conf. | |
3854 | ||
3855 | Changes since 3.0.1rc2 | |
3856 | ||
3857 | - Allow the primary to send a POOLREQ message. This isn't what the current | |
3858 | failover draft says to do, so we may have to back it out if I can't get the | |
3859 | authors to relent, but the scheme for balancing that's specified in the | |
3860 | current draft seems needlessly hairy, so I'm floating a trial balloon. | |
3861 | The rc1 code did not implement the method described in the draft either. | |
3862 | ||
3863 | Changes since 3.0.1rc1 | |
3864 | ||
3865 | - Treat NXDOMAIN and NXRRSET as success when we are trying to delete a | |
3866 | domain or RRSET. This allows the DHCP server to forget about a name | |
3867 | it added to the DNS once it's been removed, even if the DHCP server | |
3868 | wasn't the one that removed it. | |
3869 | ||
3870 | - Install defaults for failover maximum outstanding updates and maximum | |
3871 | silent time. This prevents problems that might occur if these values | |
3872 | were not configured. | |
3873 | ||
3874 | - Don't do DDNS deletes if ddns-update-style is none. | |
3875 | ||
3876 | - Return relay agent information options in DHCPNAK. This prevents DHCPNAK | |
3877 | messages from being dropped when the relay agent information option contains | |
3878 | routing information. | |
3879 | ||
3880 | - Fix a problem where coming up in recover wouldn't result in an update | |
3881 | request being sent. | |
3882 | ||
3883 | - Add some more chatty messages when we start a recovery update and when it's | |
3884 | done. | |
3885 | ||
3886 | - Fix a possible problem where some state might have been left around | |
3887 | after the peer lost contact and regained contact about how many updates | |
3888 | were pending. | |
3889 | ||
3890 | - Don't nix a lease update because of a lease conflict. This test has | |
3891 | never (as far as I know) prevented a mistake, and it appears to cause | |
3892 | problems with failover. | |
3893 | ||
3894 | - Add support in rc history code for keeping a selective history, rather | |
3895 | than a history of all references and dereferences. This code is only used | |
3896 | when extensive additional debugging is enabled. | |
3897 | ||
3898 | Changes since 3.0 | |
3899 | ||
3900 | - Make allocators for hash tables. As a side effect, this fixes a memory | |
3901 | smash in the subclass allocation code. | |
3902 | ||
3903 | - Fix a small bug in omshell where if you try to close an object when | |
3904 | no object is open, it dumps core. | |
3905 | ||
3906 | - Fix an obscure coredump that could occur on shutdown. | |
3907 | ||
3908 | - Fix a bug in the recording of host declaration rubouts in the lease file. | |
3909 | ||
3910 | - Fix two potential spins in the host deletion code. | |
3911 | ||
3912 | - Fix a core dump that would happen if an application tried to update | |
3913 | a host object attribute with a null value. | |
3914 | ||
3915 | Changes since 3.0 Release Candidate 12 | |
3916 | ||
3917 | - Fix a memory leak in the evaluation code. | |
3918 | ||
3919 | - Fix an obscure core dump. | |
3920 | ||
3921 | - Print a couple of new warnings when parsing the configuration file | |
3922 | when crucial information is left out. | |
3923 | ||
3924 | - Log "no free leases" as an error. | |
3925 | ||
3926 | - Documentation updates. | |
3927 | ||
3928 | Changes since 3.0 Release Candidate 11 | |
3929 | ||
3930 | - Always return a subnet selection option if one is sent. | |
3931 | ||
3932 | - Fix a warning that was being printed because an automatic data | |
3933 | structure wasn't zeroed. | |
3934 | ||
3935 | - Fix some failover state transitions that were being handled | |
3936 | incorrectly. | |
3937 | ||
3938 | - When supersede_lease is called on a lease whose end time has already | |
3939 | expired, but for which a state transition has not yet been done, do | |
3940 | a state transition. This fixes the case where if the secondary | |
3941 | allocated a lease to a client and the lease "expired" while the | |
3942 | secondary was in partner-down, no expiry event would actually | |
3943 | happen, so the lease would remain active until the primary was | |
3944 | restarted. | |
3945 | ||
3946 | Changes since 3.0 Release Candidate 10 | |
3947 | ||
3948 | - Fix a bug that was preventing released leases from changing state | |
3949 | in failover-enabled pools. | |
3950 | ||
3951 | - Fix a core dump in the client identifier finder code (for host | |
3952 | declarations). | |
3953 | ||
3954 | - Finish fixing a bug where bogus data would sometimes get logged to | |
3955 | the dhclient.leases file because it was opened as descriptor 2. | |
3956 | ||
3957 | - Fix the Linux dhclient-script according to suggestions made by | |
3958 | several people on the dhcp-client mailing list. | |
3959 | ||
3960 | - Log successful DNS updates at LOG_INFO, not LOG_ERROR. | |
3961 | ||
3962 | - Print an error message and refuse to run if a failover peer is | |
3963 | defined but not referenced by any pools. | |
3964 | ||
3965 | - Correct a confusing error message in failover. | |
3966 | ||
3967 | Changes since 3.0 Release Candidate 9 | |
3968 | ||
3969 | - Fix a bug in lease allocation for Dynamic BOOTP clients. | |
3970 | ||
3971 | Changes since 3.0 Release Candidate 8 Patchlevel 2 | |
3972 | ||
3973 | - Fix a bug that prevented update-static-leases from working. | |
3974 | ||
3975 | - Document failover-state OMAPI object. | |
3976 | ||
3977 | - Fix a compilation error on SunOS 4. | |
3978 | ||
3979 | Changes since 3.0 Release Candidate 8 Patchlevel 1 | |
3980 | ||
3981 | - Fix a parsing bug that broke dns updates (both interim and ad-hoc). | |
3982 | This was introduced in rc8pl1 as an unintended result of the memory | |
3983 | leakage fixes that were in pl1. | |
3984 | ||
3985 | - Fix a long-standing bug where the server would record that an update | |
3986 | had been done for a client with no name, even though no update had | |
3987 | been done, and then when the client's lease expired the deletion of | |
3988 | that nonexistant record would time out because the name was the null | |
3989 | string. | |
3990 | ||
3991 | - Clean up the omshell, dhcpctl and omapi man pages a bit. | |
3992 | ||
3993 | Changes since 3.0 Release Candidate 8 | |
3994 | ||
3995 | - Fix a bug that could cause the DHCP server to spin if | |
3996 | one-lease-per-client was enabled. | |
3997 | ||
3998 | - Fix a bug that was causing core dumps on BSD/os in the presence of | |
3999 | malformed packets. | |
4000 | ||
4001 | - In partner-down state, don't restrict lease lengths to MCLT. | |
4002 | ||
4003 | - On the failover secondary, record the MCLT received from the primary | |
4004 | so that if we come up without a connection to the primary we don't | |
4005 | wind up giving out zero-length leases. | |
4006 | ||
4007 | - Fix some compilation problems on BSD/os. | |
4008 | ||
4009 | - Fix a bunch of memory leaks. | |
4010 | ||
4011 | - Fix a couple of bugs in the option printer. | |
4012 | ||
4013 | - Fix an obscure error reporting bug in the dns update code, and also | |
4014 | make the message clearer when a key algorithm isn't supported. | |
4015 | ||
4016 | - Fix a bug in the tracing code that prevented trace runs that used | |
4017 | tcp connections from being played back. | |
4018 | ||
4019 | - Add some additional debugging capability for catching memory leaks | |
4020 | on exit. | |
4021 | ||
4022 | - Make the client release the lease correctly on shutdown. | |
4023 | ||
4024 | - Add some configurability to the build system. | |
4025 | ||
4026 | - Install omshell manual page in man1, not man8. | |
4027 | ||
4028 | - Craig Gwydir sent in a patch that fixes a long-standing bug in the | |
4029 | DHCP client that could cause core dumps, but that for some reason | |
4030 | hadn't been noticed until now. | |
4031 | ||
4032 | Changes since 3.0 Release Candidate 7 | |
4033 | ||
4034 | - Fix a bug in failover where we weren't sending updates after a | |
4035 | transition from communications-interrupted to normal. | |
4036 | ||
4037 | - Handle expired/released/reset -> free transition according to the | |
4038 | protocol specification (this works - the other way not only wasn't | |
4039 | conformant, but also didn't work). | |
4040 | ||
4041 | - Add a control object in both client and server that allows either | |
4042 | daemon to be shut down cleanly. | |
4043 | ||
4044 | - When writing a lease, if we run out of disk space, shut down the | |
4045 | output file and insist on writing a new one before proceeding. | |
4046 | ||
4047 | - In the server, if the OMAPI listener port is occupied, keep trying | |
4048 | to get it, rather than simply giving up and exiting. | |
4049 | ||
4050 | - Support fetching variables from leases and also updating and adding | |
4051 | variables to leases via OMAPI. | |
4052 | ||
4053 | - If two failover peers have wildly different clocks, refuse to start | |
4054 | doing failover. | |
4055 | ||
4056 | - Fix a bug in the DNS update code that could cause core dumps when | |
4057 | running on alpha processors. | |
4058 | ||
4059 | - Fixed a bug in ddns updates for static lease entries, thanks to a | |
4060 | patch from Andrey M Linkevitch. | |
4061 | ||
4062 | - Add support for Darwin/MacOS X | |
4063 | ||
4064 | - Install omshell (including new documentation). | |
4065 | ||
4066 | - Support DNS updates in the client (this is a very obscure feature | |
4067 | that most DHCP client users probably will not be able to use). | |
4068 | ||
4069 | - Somewhat cleaner status logging in the client. | |
4070 | ||
4071 | - Make OMAPI key naming syntax compatible with the way keys are | |
4072 | actually named (key names are domain names). | |
4073 | ||
4074 | - Fix a bug in the lease file writer. | |
4075 | ||
4076 | - Install DHCP ISC headers in a different place than BIND 9 ISC | |
4077 | headers, to avoid causing trouble in BIND 9 builds. | |
4078 | ||
4079 | - Don't send updates for attributes on an object when the attributes | |
4080 | haven't changed. Support deleting attributes on remote objects. | |
4081 | ||
4082 | - Fix a number of bugs in omshell, and add the unset and refresh | |
4083 | statements. | |
4084 | ||
4085 | - Handle disconnects in OMAPI a little bit more intelligently (so that | |
4086 | the caller gets ECONNRESET instead of EINVAL). | |
4087 | ||
4088 | - Fix a bunch of bugs in the handling of clients that have existing | |
4089 | leases when the try to renew their leases while failover is | |
4090 | operating. | |
4091 | ||
4092 | Changes since 3.0 Release Candidate 6 | |
4093 | ||
4094 | - Fix a core dump that could happen when processing a DHCPREQUEST from | |
4095 | a client that had a host declaration that contained both a | |
4096 | fixed-address declaration and a dhcp-client-identifier option | |
4097 | declaration, if the client identifier was longer than nine bytes. | |
4098 | ||
4099 | - Fix a memory leak that could happen in certain obscure cases when | |
4100 | using omapi to manipulate leases. | |
4101 | ||
4102 | - Fix some bugs and omissions in omshell. | |
4103 | ||
4104 | Changes since 3.0 Release Candidate 5 | |
4105 | ||
4106 | - Fix a bug in omapi_object_dereference that prevented objects in | |
4107 | chains from having their reference counts decreased on dereference. | |
4108 | ||
4109 | - Fix a bug in omapi_object_dereference that would prevent object | |
4110 | chains from being freed upon removal of the last reference external | |
4111 | to the chain. | |
4112 | ||
4113 | - Fix a number of other memory leaks in the OMAPI protocol subsystem. | |
4114 | ||
4115 | - Add code in the OMAPI protocol handler to trace memory leakage. | |
4116 | ||
4117 | - Clean up the memory allocation/reference history printer. | |
4118 | ||
4119 | - Support input of dotted quads and colon-separated hex lists as | |
4120 | attribute values in omshell. | |
4121 | ||
4122 | - Fix a typo in the Linux interface discovery code. | |
4123 | ||
4124 | - Conditionalize a piece of trace code that wasn't conditional. | |
4125 | ||
4126 | Changes since 3.0 Release Candidate 4 | |
4127 | ||
4128 | - Fix a bug that would prevent leases from being abandoned properly on | |
4129 | DHCPDECLINE. | |
4130 | ||
4131 | - Fix failover peer OMAPI support. | |
4132 | ||
4133 | - In failover, correctly handle expiration of leases. Previously, | |
4134 | leases would never be reclaimed because they couldn't make the | |
4135 | transition from EXPIRED to FREE. | |
4136 | ||
4137 | - Fix some broken failover state transitions. | |
4138 | ||
4139 | - Documentation fixes. | |
4140 | ||
4141 | - Take out an unnecessary check in DHCP relay agent information option | |
4142 | stashing code that was preventing REBINDING clients from rebinding. | |
4143 | ||
4144 | - Prevent failover peers from allocating leases in DHCPREQUEST | |
4145 | processing if the lease belongs to the other server. | |
4146 | ||
4147 | - Record server version in lease file introductory comment. | |
4148 | ||
4149 | - Correctly report connection errors in OMAPI and failover. | |
4150 | ||
4151 | - Make authentication signature algorithm name comparisons in OMAPI | |
4152 | case-insensitive. | |
4153 | ||
4154 | - Fix compile problem on SunOS 4.x | |
4155 | ||
4156 | - If a signature algorithm is not terminated with '.', terminate it so | |
4157 | that comparisons between fully-qualified names will work | |
4158 | consistently. | |
4159 | ||
4160 | - Different SIOCGIFCONF probe code, may "fix" problem on some Linux | |
4161 | systems with the probe not working correctly. | |
4162 | ||
4163 | - Don't allow user to type omapi key on command line of omshell. | |
4164 | ||
4165 | Changes since 3.0 Release Candidate 3 | |
4166 | ||
4167 | - Do lease billing on startup in a way that I *think* will finally do | |
4168 | the billing correctly - the previous method could overbill as a | |
4169 | result of duplicate leases. | |
4170 | ||
4171 | - Document OMAPI server objects. | |
4172 | ||
4173 | Changes since 3.0 Release Candidate 2 Patchlevel 1 | |
4174 | ||
4175 | - Fix some problems in the DDNS update code. Thanks to Albert | |
4176 | Herranz for figuring out the main problem. | |
4177 | ||
4178 | - Fix some reference counting errors on host entries that were causing | |
4179 | core dumps. | |
4180 | ||
4181 | - Fix a byte-swap bug in the token ring code, thanks to Jochen | |
4182 | Friedrich. | |
4183 | ||
4184 | - Fix a bug in lease billing, thanks to Jonas Bulow. | |
4185 | ||
4186 | Changes since 3.0 Release Candidate 2 | |
4187 | ||
4188 | - Change the conditions under which a DHCPRELEASE is actually | |
4189 | committed to be consistent with lease binding states rather than | |
4190 | using the lease end time. This may fix some problems with the | |
4191 | billing class code. | |
4192 | ||
4193 | - Fix a bug where lease updates would fail on Digital Unix (and maybe | |
4194 | others) because malloc was called with a size of zero. | |
4195 | ||
4196 | - Fix a core dump that happens when the DHCP server can't create its | |
4197 | trace file. | |
4198 | ||
4199 | Changes since 3.0 Release Candidate 1 Patchlevel 1 | |
4200 | ||
4201 | - Fix the dhcp_failover_put_message to not attempt to allocate a | |
4202 | zero-length buffer. Some versions of malloc() fail if you try to | |
4203 | allocate a zero-length buffer, and this was causing problems on, | |
4204 | e.g., Digital Unix. | |
4205 | ||
4206 | - Fix a case where the failover code was printing an error message | |
4207 | when no error had occurred. | |
4208 | ||
4209 | - Fix a problem where when a server went down and back up again, the | |
4210 | peer would not see a state transition and so would stay in the | |
4211 | non-communicating state. | |
4212 | ||
4213 | - Be smart about going into recover_wait. | |
4214 | ||
4215 | - Fix a problem in the failover implementation where peers would fail | |
4216 | to come into sync if interrupted in the RECOVER state. This could | |
4217 | have been the cause of some problems people have reported recently. | |
4218 | ||
4219 | - Fix a problem with billing classes where they would not be unbilled | |
4220 | when the client lease expired. | |
4221 | ||
4222 | - If select fails, figure out which descriptor is bad, and cut it out | |
4223 | of the I/O loop. This prevents a potentially nasty spin. I | |
4224 | haven't heard any report it in a while, but it came up consistently | |
4225 | in testing. | |
4226 | ||
4227 | - Fix a bug in the relay agent where if you specified interfaces on | |
4228 | the command line, it would fail. | |
4229 | ||
4230 | - Fix a couple of small bugs in the omapi connection object (no known | |
4231 | user impact). | |
4232 | ||
4233 | - Add the missing 3.0 Beta 1 lease conversion script. | |
4234 | ||
4235 | - Read dhcp client script hooks if they exist, rather than only if | |
4236 | they're executable. | |
4237 | ||
4238 | Changes since 3.0 Release Candidate 1 | |
4239 | ||
4240 | - Fix a memory smash that happens when fixed-address leases are used. | |
4241 | ANY SITE AT WHICH FIXED-ADDRESS STATEMENTS ARE BEING USED SHOULD | |
4242 | UPGRADE IMMEDIATELY. This has been a long-standing bug - thanks to | |
4243 | Alvise Nobile for discovering it and helping me to find it! | |
4244 | ||
4245 | - Fix a small bug in binary-to-ascii, thanks to H. Peter Anvin of | |
4246 | Transmeta. | |
4247 | ||
4248 | - There is a known problem with the DHCP server doing failover on | |
4249 | Compaq Alpha systems. This patchlevel is not a release candidate | |
4250 | because of this bug. The bug should be straightforward to fix, so | |
4251 | a new release candidate is expected shortly. | |
4252 | ||
4253 | - There is a known problem in the DDNS update code that is probably a | |
4254 | bug, and is not, as far as we know, fixed in this patchlevel. | |
4255 | ||
4256 | Changes since 3.0 Beta 2 Patchlevel 24 | |
4257 | ||
4258 | - Went over problematic failover state transitions and made them all | |
4259 | work, so that failover should now much less fragile. | |
4260 | ||
4261 | - Add some dhcpctl and omapi documentation | |
4262 | ||
4263 | - Fix compile errors when compiling with unusual predefines. | |
4264 | ||
4265 | - Make Token Ring work on Linux 2.4 | |
4266 | ||
4267 | - Fix the Digital Unix BPF_WORDALIGN bug. | |
4268 | ||
4269 | - Fix some dhcp client documentation errors. | |
4270 | ||
4271 | - Update some parts of the README file. | |
4272 | ||
4273 | - Support GCC on SCO. | |
4274 | ||
4275 | Changes since 3.0 Beta 2 Patchlevel 23 | |
4276 | ||
4277 | - Fix a bug in the DNS update code where a status code was not being | |
4278 | checked. This may have been causing core dumps. | |
4279 | ||
4280 | - When parsing the lease file, if a lease declaration includes a | |
4281 | billing class statement, and the lease already has a billing class, | |
4282 | unbill the old class. | |
4283 | ||
4284 | - When processing failover transactions, where acks will be deferred, | |
4285 | process the state transition immediately. | |
4286 | ||
4287 | - Don't try to use the new SIOCGIFCONF buffer size detection code on | |
4288 | Linux 2.0, which doesn't provide this functionality. | |
4289 | ||
4290 | - Apply a patch suggested by Tuan Uong for a problem in dlpi.c. | |
4291 | ||
4292 | - Fix a problem in using the which command in the configure script. | |
4293 | ||
4294 | - Fix a parse error in the client when setting up an omapi listener. | |
4295 | ||
4296 | - Document the -n and -g flags to the client. | |
4297 | ||
4298 | - Make sure there is always a stdin and stdout on startup. This | |
4299 | prevents shell scripts from accidentally writing error messages into | |
4300 | configuration files that happen to be opened as stderr. | |
4301 | ||
4302 | - If an interface is removed, the client will now notice that it is | |
4303 | gone rather than spinning. This has only been tested on NetBSD. | |
4304 | ||
4305 | - The client will attempt to get an address even if it can't create a | |
4306 | lease file. | |
4307 | ||
4308 | - Don't overwrite tracefiles. | |
4309 | ||
4310 | - Fix some memory allocation bugs in failover. | |
4311 | ||
4312 | Changes since 3.0 Beta 2 Patchlevel 22 | |
4313 | ||
4314 | - Apply some patches suggested by Cyrille Lefevre, who is maintaining | |
4315 | the FreeBSD ISC DHCP Distribution port. | |
4316 | ||
4317 | - Fix a core dump in DHCPRELEASE. | |
4318 | ||
4319 | Changes since 3.0 Beta 2 Patchlevel 21 | |
4320 | ||
4321 | - This time for sure: fix the spin described in the changes for pl20. | |
4322 | ||
4323 | Changes since 3.0 Beta 2 Patchlevel 20 | |
4324 | ||
4325 | - Fix a problem with Linux detecting large numbers of interfaces (Ben) | |
4326 | ||
4327 | - Fix a memory smash in the quotify code, which was introduced in | |
4328 | pl19. | |
4329 | ||
4330 | - Actually fix the spin described in the changes for pl20. The | |
4331 | previous fix only partially fixed the problem - enough to get it | |
4332 | past the regression test. | |
4333 | ||
4334 | Changes since 3.0 Beta 2 Patchlevel 19 | |
4335 | ||
4336 | - Fix a bug that could cause the server to abort if compiled with | |
4337 | POINTER_DEBUG enabled. | |
4338 | ||
4339 | - Fix a bug that could cause the server to spin when responding to a | |
4340 | DHCPREQUEST. | |
4341 | ||
4342 | - Apply Joost Mulders' suggested patches for DLPI on x86. | |
4343 | ||
4344 | - Support NUL characters in quoted strings. | |
4345 | ||
4346 | - Install unformatted man pages on SunOS. | |
4347 | ||
4348 | Changes since 3.0 Beta 2 Patchlevel 18 | |
4349 | ||
4350 | - Allow the server to be placed in partner-down state using OMAPI. | |
4351 | (Damien Neil) | |
4352 | ||
4353 | - Implement omshell, which can be used to do arbitrary things to the | |
4354 | server (in theory). (Damien Neil) | |
4355 | ||
4356 | - Fix a case where if a client had two different leases the server could | |
4357 | actually dereference the second one when it hadn't been referenced, | |
4358 | leading to memory corruption and a core dump. (James Brister) | |
4359 | ||
4360 | - Fix a case where a client could request the address of another client's | |
4361 | lease, but find_lease wouldn't detect that the other client had it, and | |
4362 | would attempt to allocate it to the client, resulting in a lease conflict | |
4363 | message. | |
4364 | ||
4365 | - Fix a case where a client with more than one client identifier could be | |
4366 | given a lease where the hardware address was correct but the client | |
4367 | identifier was not, resulting in a lease conflict message. | |
4368 | ||
4369 | - Fix a problem where the server could write out a colon-separated | |
4370 | hex list as a value for a variable, which would then not parse. | |
4371 | The fix is to always write strings as quoted strings, with any | |
4372 | non-printable characters quoted as octal escape sequences. So | |
4373 | a file written the old way still won't work, but new files written | |
4374 | this way will work. | |
4375 | ||
4376 | - Fix documentation for sending non-standard options. | |
4377 | ||
4378 | - Use unparsable names for unknown options. WARNING: this will | |
4379 | break any configuration files that use the option-nnn convention. | |
4380 | If you want to continue to use this convention for some options, | |
4381 | please be sure to write a definition, like this: | |
4382 | ||
4383 | option option-nnn code nnn = string; | |
4384 | ||
4385 | You can use a descriptive name instead of option-nnn if you like. | |
4386 | ||
4387 | - Fix a problem where we would see a DHCPDISCOVER/DHCPOFFER/ | |
4388 | DHCPREQUEST/DHCPACK/DHCPREQUEST/DHCPNAK sequence. This was the | |
4389 | result of a deceptively silly bug in supersede_lease. | |
4390 | ||
4391 | - Fix client script exit status check, according to a fix supplied by | |
4392 | Hermann Lauer. | |
4393 | ||
4394 | - Fix an endianness bug in the tracefile support, regarding ICMP | |
4395 | messages. | |
4396 | ||
4397 | - Fix a bug in the client where the medium would not work correctly if | |
4398 | it contained quoted strings. | |
4399 | ||
4400 | ** there was no pl17 ** | |
4401 | ||
4402 | Changes since 3.0 Beta 2 Patchlevel 16 | |
4403 | ||
4404 | - Add support for transaction tracing. This allows the state of the | |
4405 | DHCP server on startup, and all the subsequent transactions, to be | |
4406 | recorded in a file which can then be played back to reproduce the | |
4407 | behaviour of the DHCP server. This can be used to quickly | |
4408 | reproduce bugs that cause core dumps or corruption, and also for | |
4409 | tracking down memory leaks. | |
4410 | ||
4411 | - Incorporate some bug fixes provided by Joost Mulders for the DLPI | |
4412 | package which should clear up problems people have been seeing on | |
4413 | Solaris. | |
4414 | ||
4415 | - Fix bugs in the handling of options stored as linked lists (agent | |
4416 | options, fqdn options and nwip options) that could cause memory | |
4417 | corruption and core dumps. | |
4418 | ||
4419 | - Fix a bug in DHCPREQUEST handling that resulted in DHCPNAK messages | |
4420 | not being send in some cases when they were needed. | |
4421 | ||
4422 | - Make the lease structure somewhat more compact. | |
4423 | ||
4424 | - Make initial failover startup *much* faster. This was researched | |
4425 | and implemented by Damien Neil. | |
4426 | ||
4427 | - Add a --version flag to all executables, which prints the program | |
4428 | name and version to standard output. | |
4429 | ||
4430 | - Don't rewrite the lease file every thousand leases. | |
4431 | ||
4432 | - A bug in nit.c for older SunOS machines was fixed by a patch sent in | |
4433 | by Takeshi Hagiwara. | |
4434 | ||
4435 | - Fix a memory corruption bug in the DHCP client. | |
4436 | ||
4437 | - Lots of documentation updates. | |
4438 | ||
4439 | - Add a feature allowing environment variables to be passed to the | |
4440 | DHCP client script on the DHCP client command line. | |
4441 | ||
4442 | - Fix client medium support, which had been broken for some time. | |
4443 | ||
4444 | - Fix a bug in the DHCP client initial startup backoff interval, which | |
4445 | would cause two DHCPDISCOVERS to be sent back-to-back on startup. | |
4446 | ||
4447 | Changes since 3.0 Beta 2 Patchlevel 15 | |
4448 | ||
4449 | - Some documentation tweaks. | |
4450 | ||
4451 | - Maybe fix a problem in the DLPI code. | |
4452 | ||
4453 | - Fix some error code space inconsistencies in ddns update code. | |
4454 | ||
4455 | - Support relay agents that intercept unicast DHCP messages to stuff | |
4456 | agent options into them. | |
4457 | ||
4458 | - Fix a small memory leak in the relay agent option support code. | |
4459 | ||
4460 | - Fix a core dump that would occur if a packet was sent with no | |
4461 | options. | |
4462 | ||
4463 | Changes since 3.0 Beta 2 Patchlevel 14 | |
4464 | ||
4465 | - Finish fixing a long-standing bug in the agent options code. This | |
4466 | was causing core dumps and failing to operate correctly - in | |
4467 | particular, agent option stashing wasn't working. Agent option | |
4468 | stashing should now be working, meaning that agent options can be | |
4469 | used in class statements to control address allocation. | |
4470 | ||
4471 | - Fix up documentation. | |
4472 | ||
4473 | - Fix a couple of small memory leaks that would have added up | |
4474 | significantly in a high-demand situation. | |
4475 | ||
4476 | - Add a log-facility configuration parameter. | |
4477 | ||
4478 | - Fix a compile error on some older operating systems. | |
4479 | ||
4480 | - Add the ability in the client to execute certain statements before | |
4481 | transmitting packets to the server. Handy for debugging; not much | |
4482 | practical use otherwise. | |
4483 | ||
4484 | - Don't send faked-out giaddr when renewing or bound - again, useful | |
4485 | for debugging. | |
4486 | ||
4487 | Changes since 3.0 Beta 2 Patchlevel 13 | |
4488 | ||
4489 | - Fixed a problem where the fqdn decoder would sometimes try to store | |
4490 | an option with an (unsigned) negative length, resulting in a core | |
4491 | dump on some systems. | |
4492 | ||
4493 | - Work around the Win98 DHCP client, which NUL-terminates the FQDN | |
4494 | option. | |
4495 | ||
4496 | - Work around Win98 and Win2k clients that will claim they want to do | |
4497 | the update even when they don't have any way to do it. | |
4498 | ||
4499 | - Fix some log messages that can be printed when failover is operating | |
4500 | that were not printing enough information. | |
4501 | ||
4502 | - It was possible for a DHCPDISCOVER to get an allocation even when | |
4503 | the state machine said the server shouldn't be responding. | |
4504 | ||
4505 | - Don't load balance DHCPREQUESTs from clients in RENEWING and | |
4506 | REBINDING, since in RENEWING, if we heard it, it's for us, and in | |
4507 | REBINDING, the client wouldn't have got to REBINDING if its primary | |
4508 | were answering. | |
4509 | ||
4510 | - When we get a bogus state lease binding state transition, don't do | |
4511 | the transition. | |
4512 | ||
4513 | ||
4514 | Changes since 3.0 Beta 2 Patchlevel 12 | |
4515 | ||
4516 | - Fixed a couple of silly compile errors. | |
4517 | ||
4518 | Changes since 3.0 Beta 2 Patchlevel 11 | |
4519 | ||
4520 | - Albert Herranz tracked down and fixed a subtle bug in the base64 | |
4521 | decoder that would prevent any key with an 'x' in its base64 | |
4522 | representation from working correctly. | |
4523 | ||
4524 | - Thanks to Chris Cheney and Michael Sanders, we have a fix for the | |
4525 | hang that they both spotted in the DHCP server - when | |
4526 | one-lease-per-client was set, the code to release the "other" lease | |
4527 | could spin. | |
4528 | ||
4529 | - Fix a problem with alignment of the input buffer in bpf in cases | |
4530 | where two packets arrive in the same bpf read. | |
4531 | ||
4532 | - Fix a problem where the relay agent would crash if you specified an | |
4533 | interface name on the command line. | |
4534 | ||
4535 | - Add the ability to conditionalize client behaviour based on the | |
4536 | client state. | |
4537 | ||
4538 | - Add support for the FQDN option, and added support for a new way of | |
4539 | doing ddns updates (ddns update style interim) that allows more than | |
4540 | one DHCP server to update the DNS for the same network(s). This | |
4541 | was implemented by Damien Neil with some additional functionality | |
4542 | added by Ted Lemon. | |
4543 | ||
4544 | - Damien added a "log" statement, so that the configuration file can | |
4545 | be made to log debugging information and other information. | |
4546 | ||
4547 | - Fixed a bug that caused option buffers not to be terminated with an | |
4548 | end option. | |
4549 | ||
4550 | - Fixed a long-standing bug in the support for option spaces where the | |
4551 | options are stored as an ordered list rather than in a hash table, | |
4552 | which could theoretically result in memory pool corruption. | |
4553 | ||
4554 | - Prevent hardware declarations with no actual hardware address from | |
4555 | being written as something unparsable, and behave correctly in the | |
4556 | face of a null hardware address on input. | |
4557 | ||
4558 | - Allow key names to be FQDNs, and qualify the algorithm name if it is | |
4559 | specified unqualified. | |
4560 | ||
4561 | - Modify the DDNS update code so that it never prints the "resolver | |
4562 | failed" message, but instead says *why* the resolver failed. | |
4563 | ||
4564 | - Officially support the subnet selection option, which now has an | |
4565 | RFC. | |
4566 | ||
4567 | - Fix a build bug on MacOS X. | |
4568 | ||
4569 | - Allow administrator to disable ping checking. | |
4570 | ||
4571 | - Clean up dhcpd.conf documentation and add more information about how | |
4572 | it works. | |
4573 | ||
4574 | Changes since 3.0 Beta 2 Patchlevel 10 | |
4575 | ||
4576 | - Fix a bug introduced during debugging (!) and accidentally committed | |
4577 | to CVS. | |
4578 | ||
4579 | Changes since 3.0 Beta 2 Patchlevel 9 | |
4580 | ||
4581 | - Fix DHCP client handling of vendor encapsulated options. | |
4582 | ||
4583 | - Fix a bug in the handling of relay agent information options introduced | |
4584 | in patchlevel 9. | |
4585 | ||
4586 | - Stash agent options on client leases by default, and use the stashed | |
4587 | options at renewal time. | |
4588 | ||
4589 | - Add the ability to test the client's binding state in the client | |
4590 | configuration language. | |
4591 | ||
4592 | - Fix a core dump in the DNS update code. | |
4593 | ||
4594 | - Fix some expression evaluation bugs that were causing updates to be | |
4595 | done when no client hostname was received. | |
4596 | ||
4597 | - Fix expression evaluation debugging printfs. | |
4598 | ||
4599 | - Teach pretty_print_option to print options in option spaces other than | |
4600 | the DHCP option space. | |
4601 | ||
4602 | - Add a warning message if the RHS of a not is not boolean. | |
4603 | ||
4604 | - Never select for more than a day, because some implementations of | |
4605 | select will just fail if the timeout is too long (!). | |
4606 | ||
4607 | - Fix a case where a DHCPDISCOVER from an unknown network would be | |
4608 | silently dropped. | |
4609 | ||
4610 | - Fix a bug where if a client requested an IP address for which a different | |
4611 | client had the lease, the DHCP server would reallocate it anyway. | |
4612 | ||
4613 | - Fix the DNS update code so that if the client changes its name, the DNS | |
4614 | will be correctly updated. | |
4615 | ||
4616 | Changes since 3.0 Beta 2 Patchlevel 8 | |
4617 | ||
4618 | - Oops, there was another subtle math error in the header-length | |
4619 | bounds-checking. | |
4620 | ||
4621 | Changes since 3.0 Beta 2 Patchlevel 7 | |
4622 | ||
4623 | - Oops, forgot to byte-swap udp header length before bounds-checking it. | |
4624 | ||
4625 | Changes since 3.0 Beta 2 Patchlevel 6 | |
4626 | ||
4627 | - Fix a possible DoS attack where a client could cause the checksummer | |
4628 | to dump core. This was a read, not a write, so it shouldn't be | |
4629 | possible to exploit it any further than that. | |
4630 | ||
4631 | - Implement client- and server-side support for using the Client FQDN | |
4632 | option. | |
4633 | ||
4634 | - Support for other option spaces in the client has been added. This | |
4635 | means that it is now possible to define a vendor option space on the | |
4636 | client, request options in that space from the server (which must | |
4637 | define the same option space), and then use those options in the | |
4638 | client. This also allows NWIP and Client FQDN options to be used | |
4639 | meaningfully. | |
4640 | ||
4641 | - Add object initializer support. This means that objects can now be | |
4642 | initialized to something other than all-zeros when allocated, which | |
4643 | makes, e.g., the interface object support code a little more robust. | |
4644 | ||
4645 | - Fix an off-by-one bug in the host stuffer. This was causing host | |
4646 | deletes not the work, and may also have been causing OMAPI | |
4647 | connections to get dropped. Thanks to James Brister for tracking | |
4648 | this one down! | |
4649 | ||
4650 | - Fixed a core dump in the interface discovery code that is triggered | |
4651 | when there is no subnet declaration for an interface, but the server | |
4652 | decides to continue running. Thanks to Shane Kerr for tracking | |
4653 | down and fixing this problem. | |
4654 | ||
4655 | Changes since 3.0 Beta 2 Patchlevel 5 | |
4656 | ||
4657 | - Fix a bug in the recent enhancement to the interface discovery code | |
4658 | to support arbitrary-length interface lists. | |
4659 | ||
4660 | - Support NUL-terminated DHCP options when initializing client-script | |
4661 | environment. | |
4662 | ||
4663 | - Fix suffix operator. | |
4664 | ||
4665 | - Fix NetWare/IP option parsing. | |
4666 | ||
4667 | - Better error/status checking in dhcpctl initialization and omapi | |
4668 | connection code. | |
4669 | ||
4670 | - Fix a potential memory smash in dhcpctl code. | |
4671 | ||
4672 | - Fix SunOS4 and (maybe) Ultrix builds. | |
4673 | ||
4674 | - Fix a bug where a certain sort of incoming packet could cause a core | |
4675 | dump on Solaris (and probably elsewhere). | |
4676 | ||
4677 | - Add some more safety checks in error logging code. | |
4678 | ||
4679 | - Add support for ISC_R_INCOMPLETE in OMAPI protocol connection code. | |
4680 | ||
4681 | - Fix relay agent so that if an interface is specified on the command | |
4682 | line, the relay agent does not dump core. | |
4683 | ||
4684 | - Fix class matching so that match if can be combined with match or | |
4685 | spawn with. | |
4686 | ||
4687 | - Do not allow spurious leases in the lease database to introduce | |
4688 | potentially bogus leases into the in-memory database. | |
4689 | ||
4690 | - Fix a byte-order problem in the client hardware address type code | |
4691 | for OMAPI. | |
4692 | ||
4693 | - Be slightly less picky about what sort of hardware addresses OMAPI | |
4694 | can install in host declarations. | |
4695 | ||
4696 | Changes since 3.0 Beta 2 Patchlevel 4 | |
4697 | ||
4698 | - Incorporated Peter Marschall's proposed change to array/record | |
4699 | parsing, which allows things like the slp-agent option to be encoded | |
4700 | correctly. Thanks very much to Peter for taking the initiative to | |
4701 | do this, and for doing such a careful job of it (e.g., updating the | |
4702 | comments)! | |
4703 | ||
4704 | - Added an encoding for the slp-agent option. :') | |
4705 | ||
4706 | - Fixed SunOS 4 build. Thanks to Robert Elz for responding to my | |
4707 | request for help on this with patches! | |
4708 | ||
4709 | - Incorporated a change that should fix a problem reported by Philippe | |
4710 | Jumelle where when the network connection between two servers is | |
4711 | lost, they never reconnect. | |
4712 | ||
4713 | - Fix client script files other than that for NetBSD to actually use | |
4714 | make_resolv_conf as documented in the manual page. | |
4715 | ||
4716 | - Fix a bug in the packet handling code that could result in a core | |
4717 | dump. | |
4718 | ||
4719 | - Fix a bug in the bootp code where responses on the local net would | |
4720 | be sent to the wrong MAC address. Thanks to Jerry Schave for | |
4721 | catching this one. | |
4722 | ||
4723 | Changes since 3.0 Beta 2 Patchlevel 3 | |
4724 | ||
4725 | - In the DHCP client, execute client statements prior to using the values | |
4726 | of options, so that the client configuration can overridden, e.g., the | |
4727 | lease renewal time. | |
4728 | ||
4729 | - Fix a reference counting error that would result in very reproducible | |
4730 | failures in updates, as well as occasional core dumps, if a zone was | |
4731 | declared without a key. | |
4732 | ||
4733 | - Fix some Linux 2.0 compilation problems. | |
4734 | ||
4735 | - Fix a bug in scope evaluation during execution of "on" statements that | |
4736 | caused values not to be recorded on leases. | |
4737 | ||
4738 | - If the dhcp-max-message-size option is specified in scope, and the | |
4739 | client didn't send this option, use the one specified in scope to | |
4740 | determine the maximum size of the response. | |
4741 | ||
4742 | Changes since 3.0 Beta 2 Patchlevel 2 | |
4743 | ||
4744 | - Fix a case where spawning subclasses were being allocated | |
4745 | incorrectly, resulting in a core dump. | |
4746 | ||
4747 | - Fix a case where the DHCP server might inappropriately NAK a | |
4748 | RENEWING client. | |
4749 | ||
4750 | - Fix a place dhcprequest() where static leases could leak. | |
4751 | ||
4752 | - Include memory.h in omapip_p.h so that we don't get warnings about | |
4753 | using memcmp(). | |
4754 | ||
4755 | Changes since 3.0 Beta 2 Patchlevel 1 | |
4756 | ||
4757 | - Notice when SIOCFIGCONF returns more data than fit in the buffer - | |
4758 | allocate a larger buffer, and retry. Thanks to Greg Fausak for | |
4759 | pointing this out. | |
4760 | ||
4761 | - In the server, if no interfaces were configured, report an error and | |
4762 | exit. | |
4763 | ||
4764 | - Don't ever record a state of 'startup'. | |
4765 | ||
4766 | - Don't try to evaluate the local failover binding address if none was | |
4767 | specified. Thanks to Joseph Breu for finding this. |