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