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5ddbe8e4 | 1 | Internet Systems Consortium DHCP Distribution |
7512d88b | 2 | Version 4.4.0-dev |
33dca28a | 3 | 29 March 2016 |
72c7bd79 | 4 | |
5ddbe8e4 | 5 | Release Notes |
72c7bd79 | 6 | |
5ddbe8e4 | 7 | NEW FEATURES |
16449d9c | 8 | |
7512d88b | 9 | The major "theme" for ISC DHCP 4.4.x .... |
37ec5845 | 10 | |
7512d88b | 11 | <TBD PRIOR TO RELEASE OF 4.4.0> |
4ff4053b | 12 | |
01a54c17 EH |
13 | For information on how to install, configure and run this software, as |
14 | well as how to find documentation and report bugs, please consult the | |
15 | README file. | |
ca4606b5 | 16 | |
01a54c17 EH |
17 | ISC DHCP uses standard GNU configure for installation. Please review the |
18 | output of "./configure --help" to see what options are available. | |
fe5b0fdd | 19 | |
01a54c17 EH |
20 | The system has only been tested on Linux, FreeBSD, and Solaris, and may not |
21 | work on other platforms. Please report any problems and suggested fixes to | |
22 | <dhcp-users@isc.org>. | |
98bd7ca0 | 23 | |
fef8c6f0 SR |
24 | ISC DHCP is open source software maintained by Internet Systems |
25 | Consortium. This product includes cryptographic software written | |
26 | by Eric Young (eay@cryptsoft.com). | |
27 | ||
7512d88b TM |
28 | Please note that as of version 4.4.0, ISC DHCP is licensed under the Mozilla |
29 | Public License, MPL 2.0. Please see https://www.mozilla.org/en-US/MPL/2.0/ | |
30 | to read the MPL 2.0 license terms. | |
31 | ||
32 | Older versions already published under the ISC license will remain under the | |
33 | ISC license. Those unsure whether or not the license change affects their use | |
34 | of ISC DHCP, or who wish to discuss how to comply with the license may contact | |
35 | ISC at info@isc.org or use https://www.isc.org/mission/contact/. | |
36 | ||
37 | We welcome comments from DHCP users, about this or anything else we do. Email | |
38 | Vicky Risk, Product Manager at vicky@isc.org or discuss on | |
39 | dhcp-users@lists.isc.org. | |
40 | ||
d618ba48 | 41 | Changes since 4.3.0 (new features) |
1e08558f | 42 | |
0ee00c5b SR |
43 | - Insert the raw data from a fully encapsualted option into the option cache. |
44 | This allows "exists" to check for the option if any sub options exist. It | |
45 | also adds the raw data to the environment variables supplied to the client | |
46 | script. | |
47 | [ISC-Bugs #39863] | |
48 | ||
a53c9bf2 FD |
49 | - Pass configure arguments which begin with an upper case letter, e.g. |
50 | CFLAGS, to the embedded bind configure, so it is no longer required | |
51 | to use environment variables to get the same effect. | |
52 | [ISC-Bugs #35143] | |
53 | ||
81f844d2 FD |
54 | - Added --enable-kqueue, --enable-epoll, --enable-devpoll and a more |
55 | general --with-bind-extra-config to pass extra options to the | |
56 | embedded bind configure. Note we had mixed experiences with this | |
54ee18cf | 57 | so it is at the user risk, i.e., they are NOT SUPPORTED yet. |
f285576d | 58 | [ISC-Bugs #20890] |
81f844d2 | 59 | |
53c7a535 FD |
60 | - Changed the way the embedded bind Makefile is updated by configure. |
61 | The only user visible side effect is that --with-libbind now requires | |
62 | either "no" or an (absolute) path, i.e. "yes" is no longer valid. | |
63 | [ISC-Bugs #43227] | |
64 | ||
d163c8f7 TM |
65 | - Added the support for git repositories in the util/bind.sh script. |
66 | When you build ISC DHCP from a git repo, i.e., without a "bind" | |
67 | directory populated as in the release distribution file, you may now | |
4b914743 FD |
68 | create the bind directory, change to it and clone the private |
69 | (repo.isc.org/proj/git/prod/bind9.git) or the public | |
290a7613 | 70 | (https://source.isc.org/git/bind9.git) git repository into |
d163c8f7 | 71 | bind/bind9 and then invoke the util/bind.sh script as usual. |
c4ea4af0 FD |
72 | Note this option is incompatible with "make dist" (and make "distcheck") |
73 | because no bind/bind.tar.gz nor bind/version.tmp files are available. | |
4b914743 FD |
74 | [ISC-Bugs #43236] |
75 | ||
e94e7f23 FD |
76 | - Use the embedded bind libraries where they are built (vs where they |
77 | are installed). | |
78 | [ISC-Bugs #39319] | |
79 | ||
a1372bbe FD |
80 | - Use last version (9.11) of plain embedded bind libraries in place of |
81 | older (9.9) version of export bind libraries. | |
82 | [ISC-Bugs #43215] | |
83 | ||
5a2e8c37 | 84 | - Using "make distcheck" now works with external bind libraries (aka |
c4ea4af0 FD |
85 | configure --with-libbind). |
86 | [ISC-Bugs #43285] | |
87 | ||
3210786b TM |
88 | - The server now allows the client identifier (option 61) to own leases |
89 | in more than one subnet concurrently. Prior to this the server would | |
90 | incorrectly release an existing lease in one subnet prior to assigning | |
91 | a lease in another subnet. Note that the prior behavior can be still | |
92 | be achieved by enabling one-lease-per-client. Thanks to both David Zych at | |
93 | the University of Illinois and Norm Proffitt of Infoblox for reporting | |
94 | the issue; and Norm for suggesting a solution. | |
95 | [ISC-Bugs #41358] | |
96 | ||
f9741514 FD |
97 | - Added --enable-bind-install to install embedded bind includes and |
98 | libraries. Default is to not install them (it was the previous | |
99 | behavior). If you'd like to change the includedir and/or libdir | |
5a67b030 FD |
100 | installation directories to something different than for ISC DHCP |
101 | you must pass them using the --with-bind-extra-config configuration | |
102 | arguments. | |
f9741514 FD |
103 | [ISC-Bugs #39318] |
104 | ||
007ba82a FD |
105 | - Added support of dynamic shared libraries with libtool. A new |
106 | --enable-libtool configuration parameter is available but | |
107 | should not be used directly: *please* read the build configuration | |
108 | section in the README file for the recommended procedure. | |
109 | [ISC-Bugs #29402] | |
110 | ||
417b7b4a TM |
111 | - IPv6 operation now supports an EUI-64 based address allocation which will |
112 | calculate addresses for clients with EUI-64 DUIDs based on those DUIDs when | |
113 | enabled by setting use-eui-64 true. The parameter may defined down to the | |
114 | pool scope. Note this feature must be compiled in by defining EUI_64 in | |
115 | includes/site.h. This flag is undefined by default. | |
116 | [ISC-Bugs #43927] | |
117 | ||
c8f0b32a MS |
118 | - Added new compile time option --with-srv-conf-file which specifies a |
119 | default location of the server configuration file. | |
120 | [ISC-Bugs #44765] | |
121 | ||
a68ec967 MS |
122 | - Added --dad-wait-time parameter to dhclient. It specifies the maximum time, |
123 | in seconds, that the client process should wait for the duplicate address | |
124 | detection to complete before initiating DHCP requests. This value is | |
125 | propagated to the dhclient script and the script is responsible for waiting | |
126 | the specified amount of time or until DAD has completed. If the script does | |
127 | not support it, specifying this parameter has no effect. The default value | |
128 | is 0 which specifies that the script should not wait for DAD. With this | |
129 | change the following scripts have been modified to support the new parameter: | |
130 | freebsd, linux, macos, netbsd, openbsd. | |
131 | [ISC-Bugs #36169] | |
132 | ||
251bb4b9 | 133 | - Modified DDNS support initialization such that DNS related ports will only be |
ca22af89 TM |
134 | opened by the server (dhcpd) at startup if ddns-update-style is not "none"; |
135 | by dhclient only if and when the it first attempts an update; and never by | |
136 | dhcrelay. Prior to this all three always did the initialization at startup | |
137 | which causes them to always open on and listen for traffic on two random | |
ff343a30 | 138 | ports. Thanks to Rodney Beede for reporting the issue. |
ca22af89 TM |
139 | [ISC-Bugs #45290] |
140 | [ISC-Bugs #33377] | |
141 | ||
8c785e79 TM |
142 | - Added error logging to two memory allocation failure checks. Thanks to Bill |
143 | Parker (wp02855 at gmail dot com) for reporting the issue. | |
144 | [ISC-Bugs #41185] | |
145 | ||
251bb4b9 | 146 | - Corrected a dhclient -6 issue that caused the client to crash with an |
147 | "Impossible condition" error after de-preferencing its only IA binding. | |
148 | The crash occurred when server configuration changes rendered the existing | |
01bfe9c5 TM |
149 | binding out-of-range and no other leases were available to offer. Thanks |
150 | to Pierre Clerissi for bringing this issue to our attention. | |
251bb4b9 | 151 | [ISC-Bugs #44373] |
152 | ||
5c03ed37 | 153 | - By defining CALL_SCRIPT_ON_ONETRY_FAIL in includes/site.h, dhclient will |
154 | now call the script with reason set to FAIL when run with -1 (one try) and | |
155 | there are no server responses. This applies to IPv4 mode only. Thanks for a | |
156 | patch by Martin Pitt which got to us via Andrew Pollock. | |
a489cc48 TM |
157 | [ISC-bugs #18183] |
158 | ||
6573afff | 159 | - Linux script updated. The script is now based on Debian version. It uses |
fbe81d8e TM |
160 | ip tool from iproute2 package and ifconfig is no longer used. This also |
161 | addresses an issue of calling arping with inappropriate parameter. | |
6573afff | 162 | [ISC-bugs #19430] |
fbe81d8e | 163 | [ISC-bugs #18111] |
6573afff | 164 | |
30afd7db | 165 | - The directory minires has been removed from the source tree. It has |
c1beb003 | 166 | long been obsolete for branches other than v4_1_esv. Additionally, |
30afd7db TM |
167 | includes/minires.h was renamed includes/ns_name.h. |
168 | [ISC-bugs #45471] | |
169 | ||
b3e6fd51 TM |
170 | - The directory includes/isc-dhcp and it's only occupant, dst.h, have |
171 | been removed from the source tree. They are obsolete for branches | |
172 | other than v4_1_esv. | |
173 | [ISC-bugs #45541] | |
174 | ||
7512d88b TM |
175 | - Replaced ISC licensing with Mozilla Public License, MPL 2.0 licensing |
176 | throughout. Please see https://www.mozilla.org/en-US/MPL/2.0/ to read | |
177 | the MPL 2.0 license terms. | |
178 | [ISC-Bugs #45541] | |
179 | ||
3e985dbf TM |
180 | - Load balancing for failover peers can now be disabled by setting |
181 | "load balance max secs" to 0. Doing so for both peers means both | |
182 | servers will respond to all DHCPDISCOVERs or DHCPREQUESTs as soon as | |
183 | they are received. | |
184 | [ISC-Bugs #39669] | |
185 | ||
c0e9661e TM |
186 | - Added a new dhclient command line parameter, --prefix-len-hint <length>. |
187 | When used in conjunction with -P, it directs dhclient to use the given | |
8e219746 TM |
188 | length as the prefix length hint when requesting prefixes. Thanks to |
189 | H. Peter Anvin for suggesting this change. | |
3e88222f TM |
190 | [ISC-Bugs #43792] |
191 | [ISC-Bugs #35112] | |
192 | [ISC-Bugs #32228] | |
193 | [ISC-Bugs #29470] | |
194 | ||
195 | - dhclient will now wait for 10 seconds after declining an IPv4 address | |
196 | before issuing a discover. This is in keeping with RFC 2131, section 3.1.5. | |
197 | Prior to this dhclient did not wait at all. The amount of time dhclient | |
198 | waits can be specified via a new command line parameter: | |
199 | --decline-wait-time <seconds>. A value of zero equates to no wait at all. | |
ecf9f77b | 200 | Thanks to Pavel Kankovsky for bringing this matter to our attention. |
3e88222f | 201 | [ISC-Bugs #45457] |
c0e9661e | 202 | |
83f1dd95 TM |
203 | - Corrected dhclient command line parsing for --dad-wait-time that causes |
204 | even valid values to fail as invalid on some environments. | |
205 | [ISC-Bugs #46535] | |
206 | ||
35e86889 TM |
207 | - dhclient will now include the lease address when logging DHCPOFFERs, |
208 | DHCPREQUESTs, DHCPACKs, DHCPRELEASEs, and DHCPDECLINEs. Additionally, | |
209 | DHCPOFFERs will be logged before their corresponding DHCPREQUESTs are | |
210 | sent and logged. | |
211 | [ISC-Bugs #2729] | |
212 | ||
d6057334 TM |
213 | - When given the -T command line argument, in addition to reading the |
214 | current lease file, the server will write the leases to a temporary | |
215 | lease file. This can help detect issues in server configuration that | |
216 | only surface when leases are written to the file. The current lease | |
217 | file will not be modified and the temporary lease file is removed upon | |
218 | completion of the test. | |
219 | [ISC-Bugs #22267] | |
220 | ||
0f69ff73 TM |
221 | - dhclient will now generate a DHCPv6 DECLINE message containing all IA_NA |
222 | addresses which for which the client script indicates a DAD failure. After | |
223 | receiving the DECLINE reply, dhclient will restart the solicit process. | |
224 | Note, the client script must exit with a value of 3 to signify that the | |
225 | address failed DAD. Thanks to Jiri Popelka of Red Hat for submitting the | |
226 | patch that was the foundation for this change. | |
227 | [ISC-Bugs #21297] | |
f0f3555e | 228 | [ISC-Bugs #36966] |
0f69ff73 | 229 | |
30593241 TM |
230 | - Replaced compilation option, enable-secs-byteorder, with a run-time, server |
231 | configuration parameter, check-secs-byte-order. When enabled, the | |
232 | server will check for clients that do the byte ordering on the secs field | |
233 | incorrectly. This field should be in network byte order but some clients | |
234 | get it wrong. When this parameter is enabled the server will examine the | |
235 | secs field and if it looks wrong (high byte non zero and low byte zero) swap | |
236 | the bytes. The default is disabled. This parameter is only useful when | |
237 | doing load balancing within failover. | |
238 | [ISC-Bugs #45364] | |
239 | ||
d618ba48 | 240 | Changes since 4.3.0 (bug fixes) |
0b0a1399 | 241 | |
d618ba48 SR |
242 | - Tidy up several small tickets. |
243 | Correct parsing of DUID from config file, previously the LL type | |
244 | was put in the wrong place in the DUID string. | |
245 | [ISC-Bugs #20962] | |
d1489a35 | 246 | |
d618ba48 SR |
247 | Add code to parse "do-forward-updates" as well as "do-forward-update" |
248 | Thanks to Jiri Popelka at Red Hat. | |
249 | [ISC-Bugs #31328] | |
d1489a35 | 250 | |
d618ba48 SR |
251 | Remove log_priority as it isn't currently used. |
252 | [ISC-Bugs #33397] | |
d1489a35 | 253 | |
d618ba48 SR |
254 | Increase the size of the buffer used for reading interface information. |
255 | [ISC-Bugs #34858] | |
e105afa1 | 256 | |
d618ba48 SR |
257 | - Remove an extra set of the msg_controllen variable. |
258 | [ISC-Bugs #21035] | |
4f553fea | 259 | |
d618ba48 SR |
260 | - Add a more understandable error message if a configuration attempts |
261 | to add multiple keys for a single zone. Thanks to a patch from Jiri | |
262 | Popelka at Red Hat. | |
263 | [ISC-Bugs #31892] | |
09dccd03 | 264 | |
d618ba48 SR |
265 | - Fix some minor issues in the dst code. |
266 | [ISC-Bugs #34172] | |
eb2d84b6 | 267 | |
d618ba48 SR |
268 | - Properly #ifdef functions so that the code can compile without NSUPDATE. |
269 | [ISC-Bugs #35058] | |
76a7db2c | 270 | |
d618ba48 SR |
271 | - Update the partner's stos (start time of state, basically when we last |
272 | heard from this partner) field when updating the state in failover. | |
273 | [ISC-Bugs #35549] | |
ad06e7ba | 274 | |
d618ba48 SR |
275 | - Modify the overload processing to allow space for the remote agent ID. |
276 | [ISC-Bugs #35569] | |
277 | Handle the ordering of the SUBNET_MASK option even if it is the last | |
278 | option in the list. | |
279 | [ISC-Bugs #24580] | |
a5252220 | 280 | |
d618ba48 SR |
281 | - Remove the code that allows a server to follow RFC3315 instead of |
282 | the subsequent errata from August 2010 when determining which IAs | |
283 | to include if no addresses will be assigned. | |
284 | [ISC-Bugs #28938] | |
b7bfb2c7 | 285 | |
d618ba48 SR |
286 | - Remove unused RCSID tags. |
287 | [ISC-Bugs #35846] | |
841d9a18 | 288 | |
d618ba48 SR |
289 | - Correct the v6 client timing code. When doing the timing backoff |
290 | for MRT limit it to MRD. | |
291 | Thanks to Jiri Popelka at Red Hat for the bug report and fix. | |
292 | [ISC-Bugs #21238 | |
3abc5708 | 293 | |
d618ba48 SR |
294 | - Add a log entry when killing a client and remove the PID files |
295 | when a server, relay or client are killed. | |
296 | [ISC-Bugs #16970] | |
297 | [ISC-Bugs #17258] | |
10b7683e | 298 | |
d618ba48 SR |
299 | - Some minor cleanups in the client code. |
300 | In addition to checking for dhcpc check for bootpc in the services list. | |
301 | [ISC-Bugs #18933] | |
302 | Correct the client code to only try to get a lease once when the | |
303 | given the "-1" argument. | |
304 | Thanks to Jiri Popelka at Red Hat for the bug report and fix. | |
305 | [ISC-Bugs #26735] | |
306 | When asked for the version don't send the output to syslog. | |
307 | [ISC-Bugs #29772] | |
308 | Add the next server information to the environment variables for | |
309 | use by the client script. In order to avoid changing the client | |
310 | lease file the next server information isn't written to it. | |
311 | Thanks to Tomas Hozza at Red Hat for the suggestion and a prototype fix. | |
312 | [ISC-Bugs #33098] | |
21f3982a | 313 | |
d618ba48 SR |
314 | - Several updates to the dhcp server code. |
315 | When not in quiet mode print out the files being used. | |
316 | [ISC-Bugs #17551] | |
317 | As accessing some pid files may require privileges move the dropping | |
318 | of permission bits due to the paranoia patch to be after the pid code. | |
319 | Thanks to Jiri Popelka at Red Hat for the bug report and fix. | |
320 | [ISC-Bugs #25806] | |
321 | When processing a "--version" request don't output the version information | |
322 | to syslog. | |
33dca28a | 323 | |
d618ba48 SR |
324 | - Add the "enable-log-pid" build option to the configure script. When enabled |
325 | this causes the client, server and relay programs to include the PID | |
326 | number in syslog messages. | |
327 | Thanks to Marius Tomaschewski for the suggestion and proto-patch. | |
328 | [ISC-Bugs #29713] | |
33dca28a | 329 | |
d618ba48 SR |
330 | - Add a #define to specify the prefix length used when a client attempts |
331 | to configure an address. This can be modified by editing includes/site.h. | |
332 | By default it is set to 64. While 128 might be a better choice it would | |
333 | also be a change for currently running systems, so we have left it at 64. | |
334 | [ISC-Bugs #DHCP-2] | |
7da1ac2b | 335 | |
d618ba48 SR |
336 | - Add a run time option to the client "-df" to allow the administrator to |
337 | point to a second lease file the client can search for a DUID. This can | |
338 | be used to allow a v4 and a v6 instance of the client to share a DUID. | |
339 | The second file will only be searched if there isn't a DUID in the main | |
340 | lease file and the DUID will be written out to the main lease file. | |
341 | [ISC-Bugs #34886] | |
e82906fc | 342 | |
d618ba48 SR |
343 | - Have the client fsync the lease file to avoid lease corruption if the |
344 | client hibernates or otherwise shuts down. | |
345 | [ISC-Bugs #35894] | |
20931f53 | 346 | |
d618ba48 SR |
347 | - Add a check for L2VLAN in bpf.c to help support VLAN interfaces |
348 | Thanks to Steinar Haug for the suggestion. | |
349 | [ISC-Bugs #36033] | |
5cc6f201 | 350 | |
d618ba48 SR |
351 | - Modify the handling of the resolv.conf file to allow the DHCP |
352 | process to start up even if the resolv.conf file has problems. | |
353 | [ISC-Bugs #35989] | |
88c3ff5d | 354 | |
d618ba48 SR |
355 | - Add threshold logging functionality. Two new options, |
356 | log-threshold-low and log-threshold-high, indicate to the | |
357 | server if and when it should log an error message as addresses | |
358 | in a pool are used. | |
359 | [ISC-Bugs #34487] | |
f10cbbfa | 360 | |
d618ba48 SR |
361 | - Add code to properly dereference a pointer in the dhclient code |
362 | on an error condition. | |
363 | [ISC-Bugs #36194] | |
5fc79cfd | 364 | |
d618ba48 SR |
365 | - Add code to help clean up soft leases. |
366 | [ISC-Bugs #36304] | |
555093da | 367 | |
d618ba48 SR |
368 | - Disable the gentle shutdown functionality until we can determine |
369 | the best way to present it to remove or reduce the side effects. | |
370 | [ISC-Bugs #36066] | |
646acb59 | 371 | |
d618ba48 SR |
372 | - Modify the message displayed when a process hits a fatal error. |
373 | The new message is much shorter and simply points to the README | |
374 | and our website for directions on bug submissions. | |
375 | [ISC-Bugs #24789] | |
18ba0ff3 | 376 | |
d618ba48 SR |
377 | - Handle an absent resolv.conf file better. |
378 | [ISC-Bugs #35194] | |
ce29e695 | 379 | |
d618ba48 SR |
380 | - Tidy up receive packet processing. |
381 | Thanks to Brad Plank of GTA for reporting the issue and suggesting | |
382 | a possible patch. | |
383 | [ISC-Bugs #34447] | |
d1d1da8f | 384 | |
d618ba48 SR |
385 | - Corrected parser's right brace matching when a statement contains an error. |
386 | [ISC-Bugs #36021] | |
d1d1da8f | 387 | |
d618ba48 SR |
388 | - TSIG-authenticated dynamic DNS updates now support the use of these |
389 | additional algorithms: hmac-sha1, hmac-sha224, hmac-sha256, hmac-sha384, | |
390 | and hmac-sha512 | |
391 | [ISC-Bugs #36947] | |
c88dfebd | 392 | |
d618ba48 SR |
393 | - Added check for invalid failover message type. Thanks to Tobias Stoeckmann |
394 | working with the OpenBSD project who spotted the issue and provided the | |
4ce21cb6 | 395 | patch. |
d618ba48 | 396 | [ISC-Bugs #36653] |
4ce21cb6 | 397 | |
d618ba48 SR |
398 | - Corrected rate limiting checks for bad packet logging. Thanks to Tobias |
399 | Stoeckmann working with the OpenBSD project who spotted the issue and | |
400 | provided the patch. | |
401 | [ISC-Bugs #36897] | |
b2cb745b | 402 | |
d618ba48 SR |
403 | - Log statements depicting what files will be used by the server now occur |
404 | after the configuration file has been processed. | |
405 | [ISC-Bugs #36671] | |
4ced250f | 406 | |
d618ba48 SR |
407 | - Addressed Coverity issues reported as of 07-31-2014: |
408 | [ISC-Bugs #36712] Corrects Coverity reported "high" impact issues. | |
409 | [ISC-Bugs #36933] Corrects Coverity reported "medium" impact issues | |
410 | [ISC-Bugs #37708] Fixes compilation error in dst_api.c seen in older | |
411 | compilers that was introduced by #36712 | |
a3471269 | 412 | |
d618ba48 SR |
413 | - Server now supports a failover split value of 256. |
414 | [ISC-Bugs] #36664] | |
3e3b5257 | 415 | |
d618ba48 SR |
416 | - Remove unneeded error #defines. These defines were included in case |
417 | external programs required the older versions of the macro. They | |
418 | have been #ifdeffed for now and will be removed at a future date. | |
419 | See site.h for the #define to include them again, but you should | |
420 | switch to using the DHCP_R_* versions instead of the ISC_R_* versions. | |
421 | Also ISC_R_MULTIPLE has been removed as it is also defined in bind. | |
422 | [ISC-Bugs #37128] | |
ba4c704d | 423 | |
d618ba48 SR |
424 | - Added checks in range6 and prefix6 statement parsing to ensure addresses |
425 | are within the declared subnet. Thanks to Jiri Popelka at Red Hat for the | |
426 | bug report and patch. | |
427 | [ISC-Bugs #32453] | |
428 | [ISC-Bugs #17766] | |
429 | [ISC-Bugs #18510] | |
430 | [ISC-Bugs #23698] | |
431 | [ISC-Bugs #28883] | |
b1eea858 | 432 | |
d618ba48 SR |
433 | - Addressed checksum issues: |
434 | Added checksum readiness check to Linux packet filtering which eliminates | |
435 | invalid packet drops due to checksum errors when checksum offloading is | |
436 | in use. Based on dhcp-4.2.2-xen-checksum.patch made to the Fedora project. | |
437 | [ISC-Bugs #22806] | |
438 | [ISC-Bugs #15902] | |
439 | [ISC-Bugs #17739] | |
440 | [ISC-Bugs #18010] | |
441 | [ISC-Bugs #22556] | |
442 | [ISC-Bugs #29769] | |
443 | Inbound packets with UDP checksums of 0xffff now validate correctly rather | |
444 | than being dropped. | |
445 | [ISC-Bugs #24216] | |
446 | [ISC-Bugs #25587] | |
36c4a037 | 447 | |
d618ba48 SR |
448 | - Added the echo-client-id configuration parameter to the server configuration. |
449 | The server now supports RFC 6842 compliant behavior by setting a new | |
450 | configuration parameter, echo-client-id. When enabled, the server will | |
451 | include the client identifier option (Option code 61) if received, in its | |
452 | responses. The server identifier returned in NAKs (if enabled) will now | |
453 | be the globally defined value (if one) if the server cannot attribute the | |
454 | inbound request to a known subnet. | |
455 | [ISC-Bugs #35958] | |
456 | [ISC-Bugs #32545] | |
41b5a1a6 | 457 | |
d618ba48 SR |
458 | - Added support of the configuration parameter, use-host-decl-names, to |
459 | BOOTP request handling. | |
460 | [ISC-Bugs #36233] | |
62a9eb91 | 461 | |
d618ba48 SR |
462 | - Added logic to ignore the signal, SIGPIPE, which ensures write failures |
463 | will be delivered as errors rather than as SIGPIPE signals on all OSs. | |
464 | Thanks to Marius Tomaschewski from SUSE who reported the issue and provided | |
465 | the patch upon which the fix is based. | |
466 | [ISC-Bugs #32222] | |
b7311aae | 467 | |
d618ba48 SR |
468 | - In the failover code, handle the case of communications being interrupted |
469 | when the servers are dealing with POTENTIAL-CONFLICT. This patch allows | |
470 | the primary to accept the secondary moving from POTENTIAL-CONFLICT to | |
471 | RESOLUTION-INTERRUPTED as well as handling the bind update process better. | |
472 | In addition the code to resend update or update all requests has been | |
473 | modified to send requests more often. | |
474 | [ISC-Bugs #36810] | |
475 | [ISC-Bugs #20352] | |
1bfdeaae | 476 | |
d618ba48 SR |
477 | - By default, the server will now choose the value to use in the forward DNS |
478 | name from the following in order of preference: | |
1d3fc4d0 | 479 | |
d618ba48 SR |
480 | 1. FQDN option if provided by the client |
481 | 2. Host name option if provided by the client | |
482 | 3. Configured option host-name if defined | |
68b5d395 | 483 | |
d618ba48 SR |
484 | As before, this may be overridden by defining ddns-hostname to the desired |
485 | value (or expression). In addition, the server logic has been extended to | |
486 | use the value of the host name declaration if use-host-decl-names is enabled | |
487 | and no other value is available. | |
488 | [ISC-Bugs #21323] | |
f704712e | 489 | |
d618ba48 SR |
490 | - DNS updates were being attempted when dhcp-cache-threshold enabled the use of |
491 | the existing lease and the forward DNS name had not changed. This has been | |
492 | corrected. | |
493 | [ISC-Bugs #37368] | |
494 | [ISC-Bugs #38636] | |
6e7e6637 | 495 | |
d618ba48 SR |
496 | - Corrected an issue which caused dhclient to incorrectly form the result when |
497 | prepending or appending to the IPv4 domain-search option, received from the | |
498 | server, when either of the values being combined contain compressed | |
499 | components. | |
500 | [ISC-Bugs #20558] | |
dce576b8 | 501 | |
d618ba48 SR |
502 | - Added the server-id-check parameter to the server configuration. |
503 | This parameter allows run-time control over whether or not a server, | |
504 | participating in failover, verifies the dhcp-server-identifier option in | |
505 | DHCP REQUESTs against the server's id before processing the request. | |
506 | Formerly, enabling this behavior was done at compilation time through | |
507 | the use of the #define, SERVER_ID_CHECK, which has been removed from site.h | |
508 | The functionality is now only available through the new runtime parameter. | |
509 | [ISC-Bugs #37551] | |
45086eef | 510 | |
d618ba48 SR |
511 | - During startup, when the server encounters a lease whose binding state is |
512 | FTS_BACKUP but whose pool has no configured failover peer, it will reset the | |
513 | lease's binding state to FTS_FREE. This allows the leases to be reclaimed | |
514 | by the server after a pool's configuration has changed from failover to | |
515 | standalone. Prior to this such leases would remain stuck in the backup state | |
516 | making them unavailable for assignment. Note this conversion will occur | |
517 | whether or not the server is compiled for failover. | |
518 | [ISC-Bugs #36960] | |
785c1a51 | 519 | |
d618ba48 SR |
520 | - Fixed a small issue in the treatment of hosts in the inform processing |
521 | that could cause the response to an inform to include information from | |
522 | the wrong scope. The two examples we've heard of are getting subnet | |
523 | instead of group information associated with a host entry, or getting | |
524 | global information instead of subnet if the host entry was built via | |
525 | omapi. Thanks to Julien Soula at University of Lille for finding the | |
526 | bug and supplying a patch. | |
527 | [ISC-Bugs #35712] | |
0f1a34e9 | 528 | |
d618ba48 SR |
529 | - Avoid calling pool_timer() recursively from supersede_lease(). This could |
530 | result in leases changing state incorrectly or delaying the running of the | |
531 | leae expiration code. | |
532 | [ISC-Bugs #38002] | |
84ee63a0 | 533 | |
d618ba48 SR |
534 | - Move the check for a PID file and process to be before we rewrite the |
535 | lease file. This avoids the possibility of starting a second instance | |
536 | of a server which changes the current lease file confusing the first | |
537 | instance. This check is only included if the admin hasn't disabled PID | |
538 | files. | |
539 | [ISC-Bugs #38078] | |
540 | [ISC-Bugs #38143] | |
cc1bd34e | 541 | |
d618ba48 SR |
542 | - In the client code change the way preferred_life and max_life are printed |
543 | for environment variables to be unsigned rather than signed. | |
544 | Thanks to Jiri Popelka at Red Hat for the bug report and patch. | |
545 | [ISC-Bugs #37084] | |
0b209ea5 | 546 | |
d618ba48 SR |
547 | - Modified Linux packet handling such that packets received via VLAN are now |
548 | seen only by the VLAN interface. Prior to this, such packets were seen by | |
549 | both the VLAN interface and its parent (physical) interface, causing the | |
550 | server to respond to both. Note this remains an issue for non-Linux OSs. | |
551 | Thanks to Jiri Popelka at Red Hat for the patch. | |
552 | [ISC-Bugs #37415] | |
553 | [ISC-Bugs #37133] | |
554 | [ISC-Bugs #36668] | |
555 | [ISC-Bugs #36652] | |
ba4c704d | 556 | |
d618ba48 SR |
557 | - Log content has been changed to more directly suggest that admins should |
558 | check for multiple IPv6 clients attempting to use the same DUID when only | |
559 | abandoned addresses are available. Debug level logging will now emit counts | |
560 | of the total number of, in-use, and abandoned addresses in a shared subnet | |
561 | when the server finds no addresses available for a given DUID. Lastly, | |
562 | threshold logging is now automatically disabled for shared subnets whose | |
563 | total number of possible addresses exceeds (2^64)-1. | |
564 | [ISC-Bugs #26376] | |
565 | [ISC-Bugs #38131] | |
5fc79cfd | 566 | |
d618ba48 SR |
567 | - Added a global parameter, prefix-length-mode, which may be used to determine |
568 | how the server uses a non-zero value for prefix-length supplied by clients | |
569 | when soliciting DHCPv6 prefixes. The server supports selection modes of: | |
570 | ignore, prefer, exact, minimum and maximum which are described in detail in | |
571 | the server man pages. The prior behavior of the server was to only offer a | |
572 | prefix whose length exactly matched the prefix-length value requested. If | |
573 | no such prefixes were available, the server returned a status of none | |
574 | available. Note the default mode, "exact", provides this same behavior. | |
575 | [ISC-Bugs #36780] | |
576 | [ISC-Bugs #32228] | |
b31fe1d5 | 577 | |
d618ba48 SR |
578 | - Corrected inconsistencies in dhcrelay's setting the upper interface hop count |
579 | limit such that it now sets it to 32 when the upstream address is a multicast | |
580 | address per RFC 3315 Section 20. Prior to this if the -u argument preceded | |
581 | the -l argument on the command line or if the same interface was specified | |
582 | for both; the logic to set the hop limit count for the upper interface was | |
583 | skipped. This caused the hop count limit to be set to the default value | |
584 | (typically 1) in the outbound upstream packets. | |
585 | [ISC-Bugs #37426] | |
586 | ||
587 | - Modify the linux and openwrt dhclient scripts to process information | |
588 | from a stateless request. Thanks to Jiri Popelka at Red Hat for the | |
589 | bug report and patch. | |
590 | [ISC-Bugs #36102] | |
591 | ||
592 | - Remove more unused RCSID tags. These weren't noticed in 4.3 as | |
593 | the code isn't used anymore but we remove them here to keep the | |
594 | code consistent across versions. | |
595 | [ISC-Bugs #36451] | |
596 | ||
597 | - The server now does a better check to see if it can allocate the memory | |
598 | for large blocks of v4 leases and should provide a slightly better error | |
599 | message. Note well: the server pre-allocates v4 addresses, if you use | |
600 | a large range, such as a /8, the server will attempt to use a large | |
601 | amount of memory and may not start if there either isn't enough memory | |
bc549dd9 SR |
602 | or the size exceeds what the code supports. |
603 | [ISC-Bugs #38637] | |
604 | ||
b31fe1d5 TM |
605 | - The server will now reject unicast Request, Renew, Decline, and Release |
606 | messages from a client unless the server would have sent that client the | |
607 | dhcp6.unicast option. This behavior is in compliance with paragraph 1 in | |
608 | each of the sections 18.2,1, 18.2.3, 18.2.6, and 18.2.7 of RFC 3315. Prior | |
609 | to this, the server would simply accept the messages. Now, in order for | |
610 | the server to accept such a message, the server configuration must include | |
611 | the dhcp6.unicast option either globally or within the shared network to | |
612 | which the requested lease belongs. In other words, the server will map | |
613 | the first IA_XX address found within the client message to a shared-network | |
614 | and look for the presence of the unicast option there and then globally. | |
ba21bb1b TM |
615 | Thanks to Jiri Popelka at Red Hat for this issue and his patch which |
616 | inspired the fix. | |
b31fe1d5 | 617 | [ISC-Bugs #21235] |
c2419dca | 618 | |
20c0fdc7 SR |
619 | - The ATF (Automated Testing Framework) tools used for optional unit tests |
620 | can now be built from its embedded sources in bind, solving the | |
621 | atf-run / atf-report issue with recent (>= 0.20) versions of ATF. | |
622 | The new configuration option is "./configure --with-atf=bind". | |
1b245c91 | 623 | [ISC-Bugs #38754, #39300] |
20c0fdc7 | 624 | |
1c0b7d66 SR |
625 | - Corrected a compilation error introduced by the fix for ISC-Bugs #22806. |
626 | On older linuxes that do not include the tpacket_auxdata structure don't | |
627 | bother allocating the cmsgbuf as it isn't necessary and we don't have | |
628 | a proper length for it. | |
629 | [ISC-Bugs #39209] | |
630 | ||
da88d34b SR |
631 | - Remove the dst directory. This was replaced in 4.2.0 with the dst |
632 | code from the Bind libraries but we continued to include it for | |
633 | backwards compatibility. As we have now released 4.3.x it seems | |
634 | reasonable to remove it. | |
635 | [ISC-Buts #39019] | |
636 | ||
90a062fb | 637 | - Write out the DUID server id on startup in all cases, previously if it |
cacce092 | 638 | was read in from server-duid option in the config or lease files for |
90a062fb SR |
639 | DHCPv4 it would not be written to the new lease file. |
640 | [ISC-Bugs #37791] | |
641 | ||
90fdd337 SR |
642 | - When parsing dates for leases convert dates past 2038 to "never". |
643 | This avoids problems with integer overflows in the date and time | |
644 | handling code for people that decide to use very large lease times | |
645 | or add a lease entry with a date far in the future. | |
646 | [ISC-Bugs #33056] | |
647 | ||
70689a73 SR |
648 | - Leave the siaddr field clear when sending a NACK as per RFC 2131 |
649 | table 3. | |
650 | [ISC-Bugs #38769] | |
651 | ||
30dcfbf6 SR |
652 | - In the client don't send expired addresses to the script as part of |
653 | the binding process. Thanks to Sven Trenkel at Google for reporting | |
654 | the issue and suggesting the patch. | |
655 | [ISC-Bugs #38631] | |
656 | ||
4136513e SR |
657 | - While parsing IPv6 addresses treat "add" as part of the address instead |
658 | of as a token. | |
659 | [ISC-Bugs #39529] | |
660 | ||
3933e2aa SR |
661 | - Add support for accessing the v4 lease queues (active, free etc) in a |
662 | binary fashion instead of needing to walk through a linear list to | |
663 | insert, find or remove an entry from the queues. In addition add a | |
664 | compile time option "--enable-binary-leases" to enable the new code | |
665 | or to continue using the old code. The old code is the default. | |
666 | Thanks to Fernando Soto from BlueCat Networks for the patch. | |
667 | [ISC-Bugs #39078] | |
668 | ||
cca6a648 | 669 | - Delayed-ack now works properly with Failover. Prior to this, bind updates |
670 | post startup were being queued but never delivered. Among other things, this | |
671 | was causing leases to not transition from expired or released to free. | |
672 | [ISC-Bugs #31474] | |
673 | ||
46d31b51 SR |
674 | - Clean up parsing of v6 lease files a bit to avoid infinite loops if the |
675 | lease file is corrupt in certain ways. | |
676 | [ISC-Bugs #39760] | |
677 | ||
cca6a648 | 678 | - Corrected a crash in dhclient that occurs during lease renewal if the |
68b3e7f2 TM |
679 | client is performing its own DNS updates. Thanks to Jiri Popelka at Red Hat |
680 | for the bug report. | |
cca6a648 | 681 | [ISC-Bugs #38639] |
682 | ||
ff1b3d04 TM |
683 | - Corrected an issue in v6 lease file parsing. Prior to this, when encountering |
684 | a lease with an address for which no configured pool exists, the server was | |
685 | declaring the lease file corrupt and incorrectly skipping over the subsequent | |
686 | entry in the file. The server will now emit a log message indicating that | |
687 | no pool was found for the address (or prefix) and correctly resume parsing | |
cacce092 | 688 | with the next entry in the lease file. Our thanks to Michal Žejdl for |
673137b1 | 689 | reporting the issue. |
ff1b3d04 TM |
690 | [ISC-Bugs #39314] |
691 | ||
34711bb7 SR |
692 | - Be more liberal in finding a subnet group associated with a static |
693 | prefix. When we added the class matching code for v6 we also added | |
694 | a requirement that the static prefix must be within a subnet the | |
695 | client was in, in order to find the proper statements. We now | |
696 | look for a subnet based on the prefix, failing that on the static | |
697 | address for the client and failing that on the shared network | |
698 | itself. | |
699 | [ISC-Bugs #38329] | |
700 | ||
45c332f0 SR |
701 | - Add a new action expression "parse_vendor_options", which can be used |
702 | to parse a vendor-encapsualted-option received by the server based on | |
703 | the encoding specified by the vendor-option-space statement. | |
704 | [ISC-Bugs #36449] | |
705 | ||
7a6c9368 SR |
706 | - Enhance the PARANOIA patch to include fchown() the lease file to |
707 | allow it to be manipulated after the server does a chown(). | |
708 | Thanks to Jiri Popelka at Red Hat for the patch. | |
709 | [ISC-Bugs #36978] | |
710 | ||
7ef55702 SR |
711 | - Relax the requirement that prefix pools must be within the subnet. |
712 | This was added in as part of #32453 in order to avoid configuration | |
713 | mistakes but is being removed as prefixes aren't required to be | |
714 | within the same subnet and many people configure them in that fashion. | |
715 | [ISC-Bugs #40077] | |
716 | ||
6a39bcf0 TM |
717 | - Fixed a server crash that could occur when the server attempts to remove |
718 | the billing class from the last lease billed to a dynamic class after said | |
6c8eb544 TM |
719 | class has been deleted. Our thanks to Lasse Pesonen for reporting the |
720 | issue. | |
6a39bcf0 TM |
721 | [ISC-Bugs #39978] |
722 | ||
743d6937 TM |
723 | - LDAP Patches - Numerous small patches submitted by contributors have |
724 | been applied to the contributed code which supplies LDAP support. | |
af25ded3 SR |
725 | In addition, two larger submissions have also been included. The |
726 | first adds support for IPv6 configuration and the second provides | |
35b6560b TM |
727 | GSSAPI authentication. We would like to thank the following for their |
728 | contributions (alphabetically): | |
729 | Alex Novak at SUSE | |
db48f927 | 730 | Bill Parker (wp02855 at gmail dot com) |
35b6560b TM |
731 | Jiri Popelka at Red Hat |
732 | Marius Tomaschewski at SUSE | |
405fccfc | 733 | (william at adelaide.edu.au), The University of Adelaide |
743d6937 TM |
734 | [ISC-Bugs #39056] |
735 | [ISC-Bugs #22742] | |
736 | [ISC-Bugs #24449] | |
737 | [ISC-Bugs #28545] | |
738 | [ISC-Bugs #29873] | |
739 | [ISC-Bugs #30183] | |
740 | [ISC-Bugs #30402] | |
741 | [ISC-Bugs #32217] | |
742 | [ISC-Bugs #32240] | |
743 | [ISC-Bugs #33176] | |
744 | [ISC-Bugs #33178] | |
745 | [ISC-Bugs #36409] | |
746 | [ISC-Bugs #36774] | |
747 | [ISC-Bugs #37876] | |
748 | ||
af25ded3 | 749 | - Handle an out of memory condition in the client a bit better. |
5bc0a4e1 SR |
750 | Thanks to Frédéric Perrin from Brocade for finding the issue |
751 | and suggesting a patch. | |
2932b357 | 752 | [ISC-Bugs #39279] |
af25ded3 | 753 | |
75d02fcf TM |
754 | - Corrected a compilation error introduced by the fix for ISC-Bugs #37415. |
755 | The error occurs on Linux variants that do not support VLAN tag information | |
756 | in packet auxiliary data. The configure script now only enables inclusion | |
757 | of the VLAN tag-based logic if it is supported by the underlying OS. | |
758 | [ISC-Bugs #38677] | |
759 | ||
45adf35c | 760 | - Specifying the option, --disable-debug, on the configure script command line |
4e1bf548 | 761 | now disables debug features. Prior to this, specifying --disable-debug |
112d76f6 TM |
762 | incorrectly enabled debug features. Thanks to Gustavo Zacarias for reporting |
763 | the issue. | |
4e1bf548 | 764 | [ISC-Bugs #37780] |
4d9b81fc | 765 | |
9a111ee8 TM |
766 | - Unit test execution now uses a path augmented during configuration |
767 | processing of the --with-atf option to locate ATF runtime tools, atf-run | |
768 | and atf-report. For most installations of ATF, this should alleviate the | |
769 | need to manually include them in the PATH, as was formerly required. | |
770 | If the configure script cannot locate the tools it will emit a warning, | |
771 | informing the user that the tools must be in the PATH when running unit | |
772 | tests. | |
773 | Secondly, please note that "make check" will now exit with a failure status | |
774 | code (non-zero) if one or more unit tests fail. This means that invoking | |
775 | "make check" from an upper level directory will cause the make process to | |
776 | STOP after the first test subdirectory with failed test(s). To force all | |
777 | tests in all subdirectories to run, regardless of individual test outcome, | |
778 | use the command "make -k check". | |
779 | [ISC-Bugs #38619] | |
780 | ||
d618ba48 SR |
781 | - Corrected a static analyzer warning in common/execute.c |
782 | [ISC-Bugs #40374] | |
0a7e1a8a | 783 | |
d618ba48 SR |
784 | - ISC DHCP now follows the common convention to use the base name a |
785 | program is invoked with (aka argv[0], vs. a builtin name) for | |
786 | logs. This should help differentiate syslog entries for DHCPv4 and | |
787 | DHCPv6 servers. You can define OLD_LOG_NAME in includes/site.h to | |
788 | keep the previous behavior. | |
789 | [ISC-Bugs #38692] | |
6067cd48 | 790 | |
d618ba48 SR |
791 | - The Linux packet filter code now correctly treats only the least significant |
792 | 12 bits in an inbound packet's TCI value as the VLAN id (per IEEE 802.1Q). | |
793 | Prior to this it was using the entire 16 bit value as the VLAN id and | |
794 | incorrectly discarding packets. Thanks to Jiri Popelka at Red Hat for | |
795 | reporting this issue and supplying its patch. | |
796 | [ISC-Bugs #40591] | |
21d30347 | 797 | |
d618ba48 SR |
798 | - Fixed several static analysis issues such as potential null |
799 | references, unchecked strdup returns. Thanks to Bill Parker (wp02855 at | |
800 | gmail dot com) who identified these issues and supplied patches to | |
801 | address them. | |
802 | [ISC-Bugs #40754] | |
803 | [ISC-Bugs #40823] | |
d9b2a590 | 804 | |
d618ba48 SR |
805 | - Corrected compilation errors that prohibited building the server |
806 | and its ATF unit tests when failover is disabled. | |
807 | [ISC-Bugs #40372] | |
d9b2a590 | 808 | |
d618ba48 SR |
809 | - Added the lease address to the end of the debug level log message |
810 | emitted when an existing lease is renewed within the dhcp-cache-threshold. | |
811 | Thanks to Nathan Neulinger at Missouri S&T for suggesting the change. | |
812 | [ISC-Bugs #40598] | |
d9b2a590 | 813 | |
d618ba48 SR |
814 | - Added dhcpv6 and delayed-ack to settings listed in the "Features:" |
815 | section of the configure script output. Additionally, all of the | |
816 | features reported on will now always show either a "yes" or "no" | |
817 | value. Prior to this features left to their default setting would | |
818 | not show a value. | |
819 | [ISC-Bugs #40381] | |
f3a44c10 | 820 | |
d618ba48 SR |
821 | - Added a parameter, authoring-byte-order, to the lease file. This value |
822 | is automatically added to the top of new lease files by the server and | |
823 | indicates the internal byte order (big endian or little endian) of the | |
824 | server. This permits lease files generated on a server with one form of | |
825 | byte order to be used on a server with the opposite form. Our thanks to | |
826 | Timothe Litt for calling this to our attention and for the suggestions | |
827 | he provided. | |
828 | [ISC-Bugs #38396] | |
04daf4fe | 829 | |
d618ba48 SR |
830 | - Fixed a small memory leak in the DHCPv6 version of the client code. |
831 | This is unlikely to cause significant issues in actual use. | |
832 | [ISC-Bugs #40990] | |
7116a34f | 833 | |
d618ba48 SR |
834 | - Corrected a few minor memory leaks in omapi's dereferencing of |
835 | host objects. Thanks to Jiri Popelka at Red Hat for reporting | |
836 | the issue and supplying the patches. | |
837 | [ISC-Bugs #33990] | |
838 | [ISC-Bugs #41325] | |
2775bd62 | 839 | |
d618ba48 SR |
840 | - Cleaned up some of the Make infrastructure to make --with-libbind |
841 | work better. Though it still only works with an absolute path. | |
842 | [ISC-Bugs #39210] | |
dd9738aa | 843 | |
d618ba48 SR |
844 | - Made the embedded bind libraries able to be cross compiled |
845 | (please refer to the bind9 documentation to learn how to cross | |
846 | compile DHCP and its bind library dependency). | |
847 | [ISC-Bugs #38836] | |
491bf4a2 | 848 | |
d618ba48 SR |
849 | - Update the client code to better support getting IA_NAs and IA_PDs |
850 | in the same packet, see RFC7550 for some discussion. | |
851 | [ISC-Bugs #40190] | |
992dc765 | 852 | |
d618ba48 SR |
853 | ! Update the bounds checking when receiving a packet. |
854 | Thanks to Sebastian Poehn from Sophos for the bug report and a suggested | |
855 | patch. | |
856 | [ISC-Bugs #41267] | |
857 | CVE: CVE-2015-8605 | |
cb8c997e | 858 | |
d618ba48 SR |
859 | - When handling an incorrect command line for dhcpd, dhclient or dhcrelay |
860 | print out a specific error message about the first error in addition | |
861 | to the usage string. This may be disabled by editing includes/site.h. | |
862 | [ISC-Bugs #40321] | |
863 | [ISC-Bugs #41454] | |
acbecb2e | 864 | |
d618ba48 SR |
865 | - The configure script will now exit with an error message if it cannot find |
866 | a GNU-style make tool (needed when building BIND libraries) or pkg-config | |
867 | (needed to locate ATF used for building unit tests). Prior to this the | |
868 | script would exit indicating success causing subsequent attempts to build | |
869 | the software to fail. | |
870 | [ISC-Bugs #40371] | |
fb98e02e | 871 | |
d618ba48 SR |
872 | - Properly terminate strings before passing them to regex and fix |
873 | a boundary error when creating certain new data strings. | |
874 | Thanks to Andrey Jr. Melnikov for the bug report. | |
875 | [ISC-Bugs #41217] | |
1a006ff6 | 876 | |
d618ba48 SR |
877 | - Option expressions, such as prepend and append, are now supported when |
878 | running dhclient for IPv6. Prior to this such statements in the | |
879 | client configuration file would be parsed but have no affect. Thanks | |
880 | to Jiri Popelka at Red Hat for reporting the issue. | |
881 | [ISC-Bugs #39952] | |
45adf35c | 882 | |
d618ba48 SR |
883 | - A failover primary server will now accept a binding status update from the |
884 | secondary which transitions a lease from ACTIVE to ABANDONED. This accounts | |
885 | for instances in which a client declines a lease and only the secondary | |
886 | server receives it. Prior to this the primary server would reject such an | |
887 | update as an "invalid state transition". | |
888 | [ISC_BUGS #25189] | |
7d9dd306 | 889 | |
d618ba48 SR |
890 | - Properly allocate memory for a bpf filter. |
891 | Thanks to Bill Parker (wp02855 at gmail dot com) who identified this issue. | |
892 | [ISC-Bugs #41485] | |
7d9dd306 | 893 | |
d618ba48 SR |
894 | - Updated contrib/dhcp-lease-list.pl to handle garbage in the oui file better |
895 | and to print out the hostnames a bit better. | |
896 | Thanks to Antoine Beaupré from Debian for the suggested patch. | |
897 | [ISC-Bugs #41288] | |
29c6b4f1 | 898 | |
d618ba48 SR |
899 | - The DHCPv6 server now handles long valid and preferred lease times better. |
900 | Values that would cause the internal end time of the lease to wrap are | |
901 | modified to work as infinite. | |
902 | [ISC-Bugs #40773] | |
01a44a77 | 903 | |
d618ba48 SR |
904 | - Updated support for cross compiling by allowing the library archiver |
905 | to be set at configure time via the environment variable 'AR'. | |
906 | [ISC-Bugs #41536] | |
01a44a77 | 907 | |
d618ba48 SR |
908 | - The server will now match DHCPv6 relayed clients to host declarations |
909 | which include the "hardware" statement, if the relay connected to the | |
910 | client supplies the client's hardware address via client-linklayer-address | |
911 | option as per RFC 6939. | |
912 | [ISC-Bugs #40334] | |
fc48033a | 913 | |
d618ba48 SR |
914 | - Allow a filename to be specified instead of /dev/random during |
915 | configuration. This is passed to the BIND configuration to allow | |
916 | for cross compilation. | |
917 | [ISC-Bugs #33835] | |
db3f7799 | 918 | |
d618ba48 SR |
919 | - Add more option definitions. |
920 | [ISC-Bugs #40562] | |
0da37b4c | 921 | |
d618ba48 SR |
922 | - Correct outputting of long lines in the lease file when writing |
923 | a lease that includes long strings in an execute statement. | |
924 | [ISC-Bugs #40994] | |
158a34fb | 925 | |
d618ba48 SR |
926 | - The server will now correctly treat a lease as reserved when the client |
927 | requests an infinite lease time (i.e. OxFFFFFFFF) and "infinite-is-reserved" | |
928 | is enabled. Prior to this the server would halt. In addition, corrections | |
929 | were made to the server to allow a lease's flags field to be set via omapi. | |
930 | Prior to this, the server, depending on the host architecture, would | |
931 | incorrectly parse the new flags value from the omapi message. | |
932 | [ISC-Bugs #31179] | |
dceef873 | 933 | |
d618ba48 SR |
934 | - ISC DHCP can now be configured and built from a directory other than |
935 | the top level source directory. Note that "make distcheck" uses this | |
936 | feature. | |
937 | [ISC-Bugs #39262] | |
1be2ba15 | 938 | |
d618ba48 SR |
939 | - Add support for RFC 3527 to dhcrelay. A new, dhcrelay command line argument, |
940 | "-U <interface>" enables the addition of a RFC 3527 compliant link selection | |
941 | suboption to the agent option added for clients directly connected to the | |
942 | relay. | |
943 | [ISC-Bugs #34875] | |
944 | [ISC-Bugs #41708] | |
388cba45 | 945 | |
d618ba48 SR |
946 | - Add a new global DHCPv6 option, dhcpv6-set-tee-times, which when enabled |
947 | instructs the server to calculate T1 and T2 as recommended in RFC 3315, | |
948 | Section 22.4. | |
949 | [ISC-Bugs #25687] | |
388cba45 | 950 | |
d618ba48 SR |
951 | - Corrected minor Coverity issues. |
952 | [ISC-Bugs #35144] | |
b6ab3f6c | 953 | |
d618ba48 SR |
954 | - Add support for RFC 7341 DHCPv4 over DHCPv6 with a new configuration |
955 | option "--enable-dhcpv4o6". Note this feature requires DHCPv6 support | |
956 | and is not compatible with delayed-ack. Both client and server use 2 | |
957 | processes which communicate over UDP on a pair of sockets. The new | |
958 | "-4o6 <port>" command line argument enables DHCPv4 over DHCPv6 support | |
959 | and specifies the consecutive ports to use for inter-process communication. | |
960 | Please look at doc/DHCPv4-over-DHCPv6 for more details. | |
961 | [ISC-Bugs #35711] | |
f950de77 | 962 | |
d618ba48 SR |
963 | - Correct interface name formation when using DLPI under Solaris 11. As of |
964 | Solaris 11, ethernet device files are located in "/dev/net". The configure | |
965 | script has been modified to detect this situation and adjust the directory | |
966 | used accordingly. Thanks to Jarkko Torppa for reporting this issue and | |
86bda88b | 967 | submitting a patch |
d618ba48 SR |
968 | [ISC-Bugs #37954] |
969 | [ISC-Bugs #40752] | |
02b0bdc3 | 970 | |
d618ba48 SR |
971 | - Add a dereference call when handling an error condition while |
972 | decoding a packet. | |
973 | [ISC-Bugs #41774] | |
d8c7c34e | 974 | |
d618ba48 SR |
975 | - Add a new parameter, lease-id-format, to both dhcpd and dhclient. The |
976 | parameter controls the format in which certain values are written to lease | |
977 | files. Formats supported are octal - quoted string containing octal | |
978 | escapes, and hex - unquoted, colon separated hex digits. Thanks to | |
979 | Jay Ford, University of Iowa for bringing the issue to our attention. | |
980 | [ISC-Bugs #26378] | |
00e9af8e | 981 | |
d618ba48 SR |
982 | ! Add an option in site.h to limit the number of failover and control |
983 | connections the server will accept. By default this is 200. | |
984 | [ISC-Bugs #41845] | |
985 | CVE: CVE-2016-2774 | |
9279a3d7 | 986 | |
d618ba48 SR |
987 | - Fixed util/bindvar.sh error handling. |
988 | [ISC-Bugs #41973] | |
79818c93 | 989 | |
d618ba48 SR |
990 | - Correct error message in relay to use remote id length instead |
991 | of circuit id length. | |
992 | [ISC-Bugs #42556] | |
8a2e40cf | 993 | |
d618ba48 SR |
994 | - Add support for including an encapsulated option in a response |
995 | from the DHCPv6 server. This allows the v6 FQDN option to be | |
996 | returned in responses. | |
997 | [ISC-Bugs #29246] | |
59a351d6 | 998 | |
d618ba48 SR |
999 | - Add logic to test directory Makefiles to avoid copying Attfile(s) |
1000 | when building within the source tree. This eliminates a noisy but | |
1001 | otherwise harmless error message when running "make check". | |
1002 | [ISC-Bugs #41883] | |
0ab4a716 | 1003 | |
d618ba48 SR |
1004 | - Leases are now scrubbed of certain prior use information when pool |
1005 | re-balancing reassigns them from one FO peer to the other. This | |
2b5c8201 SR |
1006 | corrects an issue where leases that were offered but not used |
1007 | by the client retained the client hostname from the original | |
1008 | client. Thanks to Pavel Polacek, Jan Evangelista Purkyne University | |
1009 | for reporting the issue. | |
d618ba48 | 1010 | [ISC-Bugs #42008] |
250f7134 | 1011 | |
d618ba48 SR |
1012 | - In the LDAP code and schema add some missing '6' characters to use |
1013 | the v6 instead of the v4 versions. Thanks to Denis Taranushin for | |
1014 | reporting this issue and supplying its patch. | |
1015 | [ISC-Bugs #42666] | |
b05e05b7 | 1016 | |
d618ba48 SR |
1017 | - Correct how the pick-first-value expression is written to a lease |
1018 | file. Previously it was written as a concat expression due to | |
1019 | a cut and paste error. | |
1020 | [ISC-Bugs #42253] | |
ad80055f | 1021 | |
d618ba48 SR |
1022 | - Modify the DDNS code to clean up the PTR record even if there |
1023 | are issues while cleaning up the A or AAAA records. | |
1024 | [ISC-Bugs #23954] | |
e9326fd0 | 1025 | |
d618ba48 SR |
1026 | - Added global configuration parameter, abandon-lease-time, which determines |
1027 | the amount of time a lease remains abandoned. The default is 84600 seconds. | |
1028 | Additionaly, the server now conducts a ping check (if ping checks are | |
db4bcbdc TM |
1029 | enabled) prior to offering an abandoned lease to client. Our thanks to |
1030 | David Zych at University of Illinois for reporting the issue and working | |
1031 | with us to produce a viable solution. | |
d618ba48 | 1032 | [ISC-Bugs #41815] |
01a44a77 | 1033 | |
d618ba48 SR |
1034 | - Correct handling of interface names during interface discovery. This |
1035 | addresses an issue where interface names of 15 characters in length | |
86bda88b | 1036 | could lead to crashes or interface recognition errors during startup |
d618ba48 SR |
1037 | of dhcpd, dhclient, and dhcrelay. |
1038 | [ISC-Bugs #42226] | |
01a44a77 | 1039 | |
d618ba48 | 1040 | - Updates to contrib/dhcp-lease-list.pl to make it more friendly. |
2b5c8201 | 1041 | The updates are: looking for the lease file in more places and skipping |
d618ba48 | 1042 | the "processing complete" output when creating machine readable |
ec9d0f8e SR |
1043 | output. Thanks to Cameron Paine (cbp at null dot net) for the |
1044 | patch. | |
d618ba48 | 1045 | [ISC-Bugs #42113] |
01a44a77 | 1046 | |
d618ba48 SR |
1047 | - When reusing a lease for dhcp-cache-threshold return the hostname |
1048 | to the original lease. Also if the host pointer, UID or hardware address | |
1049 | change don't allow reuse of the lease. | |
1050 | Thanks to Michael Vincent for reporting this and helping us | |
1051 | verify the problem and fix. | |
1052 | [ISC-Bugs #42849] | |
01a44a77 | 1053 | |
d618ba48 SR |
1054 | - Change dmalloc to use a size_t as the length argument to bring it |
1055 | in line with the call it will make to malloc(). | |
1056 | [ISC-Bugs #40843] | |
01a44a77 | 1057 | |
2b5c8201 | 1058 | - If the failover socket can't be bound, close it. Otherwise if the |
d618ba48 SR |
1059 | user configures an incorrect address in the failover stanza the |
1060 | server will continue to open new sockets every 90 seconds until | |
1061 | it runs out. | |
1062 | [ISC-Bugs #42452] | |
01a44a77 | 1063 | |
edd6d888 TM |
1064 | - Add DHCPv4-mode, dhcrelay command line options, "-iu" and "-id", that |
1065 | allow interfaces to be upstream or downstream respectively. Upstream | |
1066 | interfaces will accept and forward only BOOTP replies, while downstream | |
1067 | interfaces will accept and forward only BOOTP requests. | |
f2e70402 TM |
1068 | [ISC-Bugs #41547] |
1069 | ||
51ce5995 SR |
1070 | - Clean up some memory references in the vendor-class construct. |
1071 | [ISC-Bugs #42984] | |
1072 | ||
9b7d458d TM |
1073 | - Removed an extraneous expression in omapi socket callback function. Prior |
1074 | to this change, the logic was techinically incorrect but other factors | |
1075 | ensured the outcome itself was correct. This change was made primarily | |
1076 | for code clarity. Thanks to Ganesh Pinjala for bringing the issue to our | |
1077 | attention. | |
1078 | [ISC-Bugs #42834] | |
1079 | ||
1080 | - Corrected a bug which could cause the server to sporadically crash while | |
1081 | loading lease files with the lease-id-format is set to "hex". Our thanks | |
1082 | to Jay Ford, University of Iowa for reporting the issue. | |
1083 | [ISC-Bugs #43185] | |
1084 | ||
1085 | - Eliminated a noisy, but otherwise harmless debug log statment that may | |
1086 | appear during server startup when building with --enable-binary-leases | |
1087 | and configuring multiple pools in a shared network. Thanks to Fernando | |
1088 | Soto from BlueCat Networks for reporting the issue and supplying a patch. | |
1089 | [ISC-Bugs #43262] | |
1090 | ||
86bda88b | 1091 | - The configure script for use with libtool now catches a failure to |
2c8a396a TM |
1092 | execute autoreconf. Prior to this, autoreconf failures would go undetected |
1093 | causing the legacy configure script to loop when run with --enable-libtool. | |
1094 | [ISC-Bugs #43546] | |
1095 | ||
9b7d458d TM |
1096 | - When replying to a DHCPINFORM, the server will now include options specified |
1097 | at the pool scope, provided the ciaddr field of the DHCPINFORM is populated. | |
1098 | Prior to this the server only evaluated options down to the subnet scope. | |
1099 | Thanks to Fernando Soto at BlueCat Networks for reporting the issue. | |
1100 | [ISC-Bugs #43219] | |
1101 | [ISC-Bugs #45051] | |
1102 | ||
66e80033 FD |
1103 | - When memory allocation fails in a repeated way the process writes |
1104 | "Run out of memory." on the standard error and exists with status 1. | |
1105 | [ISC-Bugs #32744] | |
1106 | ||
9b7d458d TM |
1107 | - The new lmdb (Lightning Memory DataBase) bind9 configure option is |
1108 | now disabled by default to avoid the presence of this library to be | |
1109 | detected which can lead to a link failure. | |
1110 | [ISC-Bugs #45069] | |
1111 | ||
86bda88b | 1112 | - The linux interface discovery code has been modified to use getifaddrs() |
e191f1e8 FD |
1113 | as is done for BSD and OS-X. Prior to this the code would only recognize |
1114 | the first address on an interface and thereby omit vlans. | |
024bee00 | 1115 | Thanks to Jiri Popelka at Redhat, Marius Tomaschewski at SUSE, and Wei |
e191f1e8 FD |
1116 | Kong at Novell, who all submitted patches. |
1117 | [ISC-Bugs #28761] | |
1118 | [ISC-Bugs #31992] | |
1119 | [ISC-Bugs #25428] | |
1120 | [ISC-Bugs #31940] | |
01bfe9c5 | 1121 | [ISC-Bugs #32935] |
e191f1e8 | 1122 | |
9b7d458d TM |
1123 | - Fixed a bug in OMAPI that causes omshell to crash when a name-value |
1124 | pair with a zero length value is shipped in an object. Thanks to | |
1125 | Fernando Soto at BlueCat Networks for reporting the issue and | |
1126 | supplying the patch. | |
1127 | [ISC-Bugs #29108] | |
1128 | ||
1129 | - On 64-bit platforms, dhclient now generates the correct value for the | |
1130 | script environment variable, "expiry", the lease expiry value exceeds | |
1131 | 0x7FFFFFFF. Prior to this such values would produce negative values | |
1132 | for expiry in the script environment. | |
1133 | [ISC-Bugs #43326] | |
1134 | ||
1135 | - Common timer logic was modified to cap the maximum timeout values at | |
1136 | 0x7FFFFFFF - 1. Values larger than that were causing fatal timer out of | |
1137 | range errors on 64-bit platforms. Thanks to Jiri Popelka at Red Hat for | |
1138 | reporting the issue. | |
1139 | [ISC-Bugs #28038] | |
1140 | ||
1141 | - DHCP6 FQDN option unpacking code now correctly handles values that contain | |
1142 | spaces, special, or non-printable characters. Prior to this the buffer | |
c1beb003 | 1143 | size needed was underestimated causing a conversion error message to |
9b7d458d TM |
1144 | be logged and DNS updates to be skipped. Thanks to Fernando Soto at |
1145 | BlueCat Networks for bringing the matter to our attention. | |
1146 | [ISC-Bugs #43592] | |
1147 | ||
1148 | - When running in -6 mode, dhclient now enforces the require option statement | |
1149 | and will discard offered leases that do not contain all the required | |
1150 | options specified in the client configuration. Prior to this the client | |
1151 | would still consider such leases. This may be disabled at compile time | |
1152 | (see ENFORCE_DHCPV6_CLIENT_REQUIRE in includes/site.h). Thanks to | |
1153 | Mritunjaykumar Dubey at Nokia for reporting the issue. | |
1154 | [ISC-Bugs #41473] | |
1155 | ||
1156 | - Altered DHCPv4 lease time calculation to avoid roll over errors on 64-bit | |
1157 | OS systems when using -1 or large values for default-lease-time. Rollover | |
1158 | values will be replaced with 0x7FFFFFFF - 1. This alleviates unintentionally | |
1159 | short expiration times being handed out when infinite lease times (-1) in | |
c1beb003 | 1160 | conjunction with failover. Our thanks to Alessandro Gherardi for bringing |
b63c3212 | 1161 | the issue to our attention. |
9b7d458d | 1162 | [ISC-Bugs #41976] |
ece2d9da | 1163 | |
ab777749 TM |
1164 | - The server nows checks both the address and length of a prefix delegation |
1165 | when attempting to match it to a prefix pool. This ensures the server | |
1166 | responds properly when pool configurations change such that once valid, | |
1167 | "in-pool" delegations are now treated as being invalid. During lease | |
1168 | file loading at startup, the server will discard any PD leases that | |
1169 | are deemed "out-of-pool" either by address or mis-matched prefix length. | |
1170 | Clients seeking to renew or rebind such leases will get a response of | |
1171 | No Binding in the case of the former, and the prefix delegation with | |
24f10d6d TM |
1172 | lifetimes set to zero in the case of the latter. Thanks to Mark Nejedlo |
1173 | at TDS Telecom for reporting this issue. | |
ab777749 TM |
1174 | [ISC-Bugs #35378] |
1175 | ||
6ec59010 TM |
1176 | - The server now detects failover peers that are not referenced in at least |
1177 | one pool when run with the command line option for test mode, -T. Prior to | |
1178 | this the check was performed too far down stream to be detected in test mode. | |
1179 | [ISC-Bugs #29892] | |
1180 | ||
63ccfbb0 MS |
1181 | - Changed severity of the log message indicating UDP checksum errors in |
1182 | the received packets from 'info' to 'debug' to avoid logging excessive | |
1183 | number of false positives when UDP checksum offloading is enabled. | |
1184 | [ISC-bugs #41757] | |
1185 | ||
babe4149 | 1186 | - Replaced ifconfig parameters "add" and "delete" with "alias" and "-alias" |
1187 | for IPv6 mode in the client scripts, netbsd and openbsd. This was | |
1188 | preventing IPv6 addresses from being added or removed from interfaces. | |
a9df4710 | 1189 | Thanks to Tim Dean for reporting this issue. |
babe4149 | 1190 | [ISC-bugs #31573] |
1191 | ||
d1489a35 TM |
1192 | - Corrected an issue where the server would return a client's previously |
1193 | released prefix lease even when the client provides a prefix length | |
1194 | hint that does not match the prior lease. Now the server will only | |
1195 | return the previous lease if it exactly matches the hint. If not | |
1196 | it will attempt to allocate a new prefix based on the hint and the | |
a58a1076 TM |
1197 | prefix-length-mode. Thanks to Tim DeNike - Lightspeed Communications |
1198 | for pointing out the error of our ways. | |
d1489a35 TM |
1199 | [ISC-bugs #45780] |
1200 | ||
e39b4193 TM |
1201 | - Added explicit include of BIND9 isc/util.h to adapt to revisisions |
1202 | in BIND9 (see BIND9 ticket #46311). Prior to this the build was failing | |
1203 | with implicit function declarations errors for POST() and INSIST(). | |
1204 | [ISC-bugs #46332] | |
1205 | ||
2d542e1e TM |
1206 | - Added to code ignore empty IPv4 host name option (code 12). While RFC 2132 |
1207 | states the option cannot be empty, some clients are apparently capable of | |
1208 | sending it. Prior to this the server was attempting to use it and store it | |
1209 | in the lease file causing issues with DDNS and so forth. | |
1210 | [ISC-bugs #43786] | |
1211 | ||
abacf8ad TM |
1212 | - Replaced iasubopt::heap_index with separate values for active and inactive |
1213 | heaps: iasubopt::active_index and iasubopt::inactive_index. This was done | |
1214 | to accomodate a change in behavior in BIND9 isc_heap_delete(). | |
1215 | [ISC-bugs #46719] | |
1216 | ||
6980ae03 | 1217 | Changes since 4.2.0 (new features) |
51b8a8a0 SR |
1218 | |
1219 | - If a client renews before 'dhcp-cache-threshold' percent of its lease | |
1220 | has elapsed (default 25%), the server will reuse the allocated lease | |
1221 | (provide a lease within the currently allocated lease-time) rather | |
1222 | than extend or renew the lease. This absolves the server of needing | |
1223 | to perform an fsync() operation on the lease database before reply, | |
1224 | which improves performance. [ISC-Bugs #22228] | |
80778e94 | 1225 | Updated this patch to support asynchronous DDNS. If the server is |
adb95d23 | 1226 | attempting to do DDNS on a lease it should be updated and written to |
4809ef5c | 1227 | disk even if that wouldn't be necessary due to the thresholding. |
8cd88e20 | 1228 | [ISC-Bugs #26311] |
51b8a8a0 | 1229 | |
6980ae03 SR |
1230 | - The 'no available billing' log line now also logs the name of the last |
1231 | matching billing class tried before failing to provide a billing. | |
1232 | [ISC-Bugs #21759] | |
1233 | ||
32e651c4 SR |
1234 | - A problem with missing get_hw_addr function when --enable-use-sockets |
1235 | was used is now solved on GNU/Linux, BSD and GNU/Hurd systems. Note | |
1236 | that use-sockets feature was not tested on those systems. Client and | |
1237 | server code no longer use MAX_PATH constant that is not defined on | |
3cb6f9bb | 1238 | GNU/Hurd systems. [ISC-Bugs #25979] |
32e651c4 | 1239 | |
67418698 SR |
1240 | - Add a perl script in the contrib directory, dhcp-lease-list.pl, which |
1241 | can parse v4 lease files and output the lease information in a more | |
1242 | human friendly manner. This was written by Christian Hammers with | |
1243 | some updates by vom and ISC. This is contributed code and is not | |
1244 | supported by ISC; however it may be useful to some users. | |
1245 | [ISC-Bugs #20680] | |
1246 | ||
a7341359 | 1247 | - Add support in v6 for on-commit, on-expire and on-release. |
4809ef5c | 1248 | [ISC-Bugs #27912] |
a7341359 | 1249 | |
01fa619f SR |
1250 | - Add support for using classes with v6. |
1251 | [ISC-Bugs #26510] | |
1252 | ||
d7d9c0c7 SR |
1253 | - Update the DDNS code to current standards and allow for sharing |
1254 | of DDNS entries between v4 and v6 clients. The new code is used | |
1255 | if the ddns-update-style is set to "standard", the older code is | |
1256 | still available if ddns-update-style is set to "interim". The | |
1257 | oldest DDNS code "ad-hoc" has been removed. Thanks to Thomas Pegeot | |
1258 | who submitted a patch for this issue. This patch is based on | |
1259 | that work with some modifications. | |
64fb661c | 1260 | [ISC-Bugs #21139] |
1534fff7 | 1261 | |
cde11a4c SR |
1262 | - Add a configuration option to the server to suppress using fsync(). |
1263 | Enabling this option will mean that fsync() is never called. This | |
1264 | may provide better performance but there is also a risk that a lease | |
1265 | will not be properly written to the disk after it has been issued | |
1266 | to a client and before the server stops. Using this option is | |
1267 | not recommended. | |
64fb661c | 1268 | [ISC-Bugs #34810] |
cde11a4c | 1269 | |
f88446f1 SR |
1270 | - Add some logging statements to indicate when the server is ready |
1271 | to serve. One statement is emitted after the server has finished | |
1272 | reading its files and is about to enter the dispatch loop. | |
1273 | This is "Server starting service.". | |
1274 | The second is emitted when a server determines that both it and | |
1275 | its failover peer are in the normal state. | |
1276 | This is "failover peer <name>: Both servers normal." | |
64fb661c | 1277 | [ISC-Bugs #33208] |
f88446f1 | 1278 | |
619304cd SR |
1279 | - Add support for accessing options from v6 relays. The v6relay |
1280 | statement allows the administrator to choose which relay to | |
1281 | use when searching for an option, see the dhcp-options man page | |
6b9c9f87 SR |
1282 | for a description. The host-identifier option has also been |
1283 | updated to support the use of relay options, see the dhcpd.conf | |
619304cd SR |
1284 | man page for a description. |
1285 | [ISC-Bugs #19598] | |
1286 | ||
e54ff84f | 1287 | - When doing DDNS if there isn't an appropriate zone statement attempt |
80778e94 | 1288 | to find a reasonable nameserver via a DNS resolver. This restores |
e54ff84f SR |
1289 | some functionality that was lost in the transition to asynchronous |
1290 | DDNS. Due to the lack of security and increase in fragility of the | |
1291 | system when using this feature we strongly recommend the use of | |
1292 | appropriate zone statements rather than using this functionality. | |
1293 | [ISC-Bugs #30461] | |
1294 | ||
61ef216b SR |
1295 | - Add support for specifying the address from which to send |
1296 | DDNS updates on the DHCP server. There are two new options | |
1297 | "ddns-local-address4" and "ddns-local-address6" that each take | |
1298 | one instance of their respective address types. | |
1299 | [ISC-Bugs #34779] | |
4d079f0e | 1300 | |
38ee81bd SR |
1301 | - Add ignore-client-uids option in the server. This option causes |
1302 | the server to not record a client's uid in its lease. This | |
1303 | violates the specification but may also be useful when a client | |
1304 | can dual boot using different client ids but the same mac address. | |
6b9c9f87 | 1305 | Thank you to Brian De Wolf at Cal Poly Pomona for the patch. |
38ee81bd SR |
1306 | [ISC-Bugs #32427] |
1307 | [ISC-Bugs #35066] | |
4d079f0e SR |
1308 | |
1309 | - Extend the DHCPINFORM processing to honor the subnet selection option | |
1310 | and take host declarations into account. | |
1311 | Thanks to Christof Chen for testing and submitting the patch. | |
1312 | [ISC-Bugs #35015] | |
1313 | ||
fe2ac9e3 SR |
1314 | - Extend the hardware expression to look into the lease structure |
1315 | for a hardware address if there is no packet. This allows the | |
1316 | server to find the hardware address during on-expiry processing. | |
1317 | [ISC-Bugs #24584] | |
61ef216b | 1318 | |
bc30c84e SR |
1319 | - Add definitions for some options that have been specified by the IETF. |
1320 | [ISC-Bugs #29268] | |
ccc2a367 | 1321 | [ISC-Bugs #35198] |
bc30c84e | 1322 | |
01a44a77 | 1323 | Changes since 4.2.0 (bug fixes) |
8ee352ee | 1324 | |
01a44a77 SR |
1325 | - When using 'ignore client-updates;', the FQDN returned to the client |
1326 | is no longer truncated to one octet. | |
8ee352ee | 1327 | |
01a44a77 | 1328 | - Cleaned up an unused hardware address variable in nak_lease(). |
4889a646 | 1329 | |
01a44a77 SR |
1330 | - Manpage entries for the ia-pd and ia-prefix options were updated to |
1331 | reflect support for prefix delegation. | |
4889a646 | 1332 | |
01a44a77 | 1333 | - Cleaned up some compiler warnings |
7dc4e69c | 1334 | |
01a44a77 SR |
1335 | - An optimization described in the failover protocol draft is now included, |
1336 | which permits a DHCP server operating in communications-interrupted state | |
1337 | to 'rewind' a lease to the state most recently transmitted to its peer, | |
1338 | greatly increasing a server's endurance in communications-interrupted. | |
1339 | This is supported using a new 'rewind state' record on the dhcpd.leases | |
1340 | entry for each lease. | |
c5bc8b1a | 1341 | |
01a44a77 | 1342 | - Fix the trace code which was broken by the changes to the DDNS code. |
d0a10f6a | 1343 | |
01a44a77 SR |
1344 | - Update the fsync code to work with the changes to the DDNS code. It now |
1345 | uses a timer instead of noticing if there are no more packets to process. | |
dc9d7b08 | 1346 | |
01a44a77 SR |
1347 | - When constructing the DNS name structure from a text string append |
1348 | the root to relative names. This satisfies a requirement in the DNS | |
1349 | library that names be absolute instead of relative and prevents DHCP | |
1350 | from crashing. [ISC-Bugs #21054] | |
a24b9f23 | 1351 | |
01a44a77 SR |
1352 | - "The LDAP Patch" that has been circulating for some time, written by |
1353 | Brian Masney and S.Kalyanasundraram and maintained for application to | |
1354 | the DHCP-4 sources by David Cantrell has been included. Please be | |
1355 | advised that these sources were contributed, and do not yet meet the | |
1356 | high standards we place on production sources we include by default. | |
1357 | As a result, the LDAP features are only included by using a compile-time | |
1358 | option which defaults off, and if you enable it you do so under your | |
1359 | own recognizance. We will be improving this software over time. | |
1360 | [ISC-Bugs #17741] | |
c5bc8b1a | 1361 | |
01a44a77 SR |
1362 | - Prohibit including lease time information in a response to a DHCP INFORM. |
1363 | [ISC-Bugs #21092] | |
cc17cbc3 | 1364 | |
01a44a77 SR |
1365 | ! Accept a client id of length 0 while hashing. Previously the server would |
1366 | exit if it attempted to hash a zero length client id, providing attackers | |
1367 | with a simple denial of service attack. [ISC-Bugs #21253] | |
1368 | CERT: VU#541921 - CVE: CVE-2010-2156 | |
08b2d347 | 1369 | |
01a44a77 | 1370 | - A memory leak in ddns processing was closed. [ISC-Bugs #21377] |
08b2d347 | 1371 | |
01a44a77 SR |
1372 | - Modify the exception handling for initial context creation. Previously |
1373 | we would try and clean up before exiting. This could present problems | |
1374 | when the cleanup required part of the context that wasn't available. It | |
1375 | also didn't do much as we exited afterwards anyway. Now we simply log | |
1376 | the error and exit. [ISC-Bugs #21093] | |
ad4001ce | 1377 | |
01a44a77 SR |
1378 | - A bug was fixed that could cause the DHCPv6 server to advertise/assign a |
1379 | previously allocated (active) lease to a client that has changed subnets, | |
1380 | despite being on different shared networks. Dynamic prefixes specifically | |
1381 | allocated in shared networks also now are not offered if the client has | |
1382 | moved. [ISC-Bugs #21152] | |
3cb6f9bb | 1383 | |
01a44a77 | 1384 | - Add some debugging output for use with the DDNS code. [ISC-Bugs #20916] |
f6dc164f | 1385 | |
01a44a77 SR |
1386 | - Fix the trace code to handle timing events better and to truncate a file |
1387 | before using instead of overwriting it. [ISC-Bugs #20969] | |
4b8251a0 | 1388 | |
01a44a77 SR |
1389 | - Modify the determination of the default TTL to use for DDNS updates. |
1390 | The user may still configure the ttl via ddns-ttl. The default for | |
1391 | both v4 and v6 is now 1/2 the (preferred) lease time with a limit. The | |
1392 | previous defaults (1/2 lease time without a limit for v4 and a default | |
1393 | value for v6) may be used by defining USE_OLD_DDNS_TTL in site.h | |
1394 | [ISC-Bugs #21126] | |
47e8308d | 1395 | |
01a44a77 SR |
1396 | - libisc/libdns is now brought up to version 9.7.1rc1. This corrects |
1397 | three reported flaws in ISC DHCP; | |
d9b5c150 | 1398 | |
01a44a77 SR |
1399 | o DHCP processes (dhcpd, dhclient) fail to start if one of either the |
1400 | IPv4 or IPv6 address families is not present. [ISC-Bugs #21122] | |
08e6dad9 | 1401 | |
01a44a77 SR |
1402 | o Assertion failure when attempting to cancel a previously running DDNS |
1403 | update. [ISC-Bugs #21133] | |
9f9265b6 | 1404 | |
01a44a77 SR |
1405 | o Compilation failure of libisc/libdns due to the use of a flexible |
1406 | array member. [ISC-Bugs #21316] | |
9f9265b6 | 1407 | |
01a44a77 | 1408 | - Add declaration for variable in debug code in alloc.c. [ISC-Bugs #21472] |
35de6c8c | 1409 | |
01a44a77 SR |
1410 | - Documentation cleanup covering multiple tickets |
1411 | [ISC-Bugs #20265] [ISC-Bugs #20259] minor cleanup | |
1412 | [ISC-Bugs #20263] add text describing some default values | |
1413 | [ISC-Bugs #20193] single quotes at the start of a line indicate a control | |
1414 | line to nroff, escape them if we actually want a quote. | |
1415 | [ISC-Bugs #18916] sync the pointer to web pages amongst the different docs | |
de87ffe3 | 1416 | |
01a44a77 SR |
1417 | - 'get-host-names true;' now also works even if 'use-host-decl-names true;' |
1418 | was also configured. The nature of this repair also fixes another | |
1419 | error; the host-name supplied by a client is no longer overridden by a | |
1420 | reverse lookup of the lease address. Thanks to a patch from Wilco Baan | |
1421 | Hofman supplied to us by the Debian package maintenance team. | |
1422 | [ISC-Bugs #21691] {Debian Bug#509445} | |
e563ec2e | 1423 | |
01a44a77 SR |
1424 | - The .TH tag for the dhcp-options manpage was typo repaired |
1425 | thanks to a report from jidanni and the Debian package maintenance | |
1426 | team. [ISC-Bugs #21676] {Debian Bug#563613} | |
3bedb117 | 1427 | |
01a44a77 SR |
1428 | - More documentation changes - primarily to put the options in the dhclient |
1429 | and dhcpd man pages into the standard form. Thanks in part to a patch | |
1430 | from David Cantrell at Red Hat. | |
1431 | [ISC-Bugs #20264] and parts of [ISC-Bugs #17744] dhclient.8 changes | |
18a28679 | 1432 | |
01a44a77 SR |
1433 | - Add code to clear the pointer to an object in an OMAPI handle when the |
1434 | object is freed due to a dereference. [ISC-Bugs #21306] | |
0b2ec8c9 | 1435 | |
01a44a77 SR |
1436 | - Fixed a bug that leaks host record references onto lease structures, |
1437 | causing the server to apply configuration intended for one host to any | |
1438 | other innocent clients that come along later. [ISC-Bugs #22018] | |
67b2cb45 | 1439 | |
01a44a77 SR |
1440 | - Minor code fixes |
1441 | [ISC-Bugs #19566] When trying to find the zone for a name for ddns allow | |
1442 | the name to be at the apex of the zone. | |
1443 | [ISC-Bugs #19617] Restrict length of interface name read from command line | |
1444 | in dhcpd - based on a patch from David Cantrell at Red Hat. | |
1445 | [ISC-Bugs #20039] Correct some error messages in dhcpd.c | |
1446 | [ISC-Bugs #20070] Better range check on values when creating a DHCID. | |
9a111ee8 | 1447 | [ISC-Bugs #20198] Avoid writing past the end of the field when adding |
01a44a77 SR |
1448 | overly long file or server names to a packet and add a log message |
1449 | if the configuration supplied overly long names for these fields. | |
1450 | Thanks to Martin Pala. | |
1451 | [ISC-Bugs #21497] Add a little more randomness to rng seed in client | |
1452 | thanks to a patch from Jeremiah Jinno. | |
74977c94 | 1453 | |
01a44a77 | 1454 | - Correct error handling in DLPI [ISC-Bugs #20378] |
30e42327 | 1455 | |
01a44a77 SR |
1456 | - Remove __sun__ and __hpux__ typedefs in osdep.h as they are now being |
1457 | checked in configure. [ISC-Bugs #20443] | |
dbd65517 | 1458 | |
01a44a77 SR |
1459 | - Modify how the cmsg header is allocated the v6 send and received routines |
1460 | to compile on more compilers. [ISC-Bugs #20524] | |
0f750c4f | 1461 | |
01a44a77 SR |
1462 | - When parsing a domain name free the memory for the name after we are |
1463 | done with it. [ISC-Bugs #20824] | |
b95f1ee0 | 1464 | |
01a44a77 SR |
1465 | - Add an elapsed time option to the release message and refactor the |
1466 | code to move most of the common code to a single routine. | |
1467 | [ISC-Bugs #21171]. | |
b95f1ee0 | 1468 | |
01a44a77 SR |
1469 | - Two identical log messages for commit_leases() have been disambiguated. |
1470 | [ISC-Bugs #18915] | |
0ef9a46e | 1471 | |
01a44a77 SR |
1472 | - Parse date strings more properly - the code now handles semi-colons in |
1473 | date strings correctly. Thanks to a patch from Jiri Popelka at Red Hat. | |
1474 | [ISC-Bugs #21501, #20598] | |
de6c9af6 | 1475 | |
01a44a77 SR |
1476 | - Fixes to lease input and output. |
1477 | [ISC-Bugs #20418] - Some systems don't support the "%s" argument to | |
1478 | strftime, paste together the same string using mktime instead. | |
1479 | [ISC-Bugs #19596] - When parsing iaid values accept printable | |
1480 | characters. | |
1481 | [ISC-Bugs #21585] - Always print time values in omshell as hex | |
1482 | instead of ascii if the values happen to be printable characters. | |
87132514 | 1483 | |
01a44a77 SR |
1484 | - Minor changes for scripts, configure.ac and Makefiles |
1485 | [ISC-Bugs #19147] Use domain-search instead of domain-name in manual and | |
1486 | example conf file. Thanks to a patch from David Cantrell | |
1487 | at Red Hat. | |
1488 | [ISC-Bugs #19761] Restore address when doing a rebind in DHCPv6 | |
1489 | [ISC-Bugs #19945] Properly close the quote on some arguments. | |
1490 | [ISC-Bugs #20952] Add 64 bit types to configure.ac | |
adb95d23 | 1491 | [ISC-Bugs #21308] Add "PATH=" to CLIENT_PATH environment variable |
b047bd38 | 1492 | |
01a44a77 SR |
1493 | - Update the code to parse dhcpv6 lease files to accept a semi-colon at |
1494 | the end of the max-life and preferred-life clauses. In order to be | |
1495 | backwards compatible with older lease files not finding a semi-colon | |
1496 | is also accepted. [ISC-Bugs #22303]. | |
e3c94800 | 1497 | |
01a44a77 SR |
1498 | ! Handle a relay forward message with an unspecified address in the |
1499 | link address field. Previously such a message would cause the | |
e675b663 | 1500 | server to crash. Thanks to a report from John Gibbins. [ISC-Bugs #21992] |
01a44a77 | 1501 | CERT: VU#102047 CVE: CVE-2010-3611 |
dd9237c3 | 1502 | |
01a44a77 SR |
1503 | - ./configure on longer searches for -lcrypto to explicitly link against. |
1504 | This fixes a bug where 'dhclient' would have shared library dependencies | |
1505 | on '/usr/lib'. [ISC-Bugs #21967] | |
d13db163 | 1506 | |
01a44a77 SR |
1507 | - Handle pipe failures more gracefully. Some OSes pass a SIGPIPE |
1508 | signal to a process and will kill the process if the signal isn't | |
1509 | caught. This patch adds code to turn off the SIGPIPE signal via | |
1510 | a setsockopt() call. The signal is already being ignored as part | |
1511 | of the ISC library. [ISC-Bugs #22269] | |
b342f2e7 | 1512 | |
01a44a77 SR |
1513 | - Restore printing of values in omshell to the style pre 21585. For |
1514 | 21585 we changed the print routines to always display time values | |
1515 | as a hex list. This had a side effect of printing all data strings | |
1516 | as a hex list. We shall investigate other ways of displaying time | |
1517 | values more usefully. [ISC-Bugs #22626] | |
797aab67 | 1518 | |
01a44a77 SR |
1519 | ! Fix the handling of connection requests on the failover port. |
1520 | Previously a connection request from a source that wasn't | |
1521 | listed as a failover peer would cause the server to become | |
1522 | non-responsive. Thanks to a report from Brad Bendily, brad@bendily.com. | |
1523 | [ISC-Bugs #22679] | |
9a111ee8 | 1524 | CERT: VU#159528 CVE: CVE-2010-3616 |
bc7f8b8e | 1525 | |
01a44a77 SR |
1526 | - Don't pass the ISC_R_INPROGRESS status to the omapi signal handlers. |
1527 | Passing it through to the handlers caused the omshell program to fail | |
1528 | to connect to the server. [ISC-Bugs #21839] | |
d289ee68 | 1529 | |
adb95d23 | 1530 | - Fix the parenthesis in the code to process configuration statements |
01a44a77 SR |
1531 | beginning with "auth". The previous arrangement caused |
1532 | "auto-partner-down" to be processed incorrectly. [ISC-Bugs #21854] | |
d19fa5a1 | 1533 | |
01a44a77 SR |
1534 | - Limit the timeout period allowed in the dispatch code to 2^^32-1 seconds. |
1535 | Thanks to a report from Jiri Popelka at Red Hat. | |
1536 | [ISC-Bugs #22033], [Red Hat Bug #628258] | |
bb9189c3 | 1537 | |
01a44a77 SR |
1538 | - When processing the format flags for a given option consume the |
1539 | flag indicating an optional value correctly. A symptom of this | |
1540 | bug was an infinite loop when trying to parse the slp-service-scope | |
1541 | option. Thanks to a patch from Marius Tomaschewski. | |
1542 | [ISC-Bugs #22055] | |
cbbd2714 | 1543 | |
01a44a77 SR |
1544 | - Disable the use of kqueue in the ISC library. This avoids a problem |
1545 | between the fork and socket code that caused the dhcpd process to | |
1546 | use all available cpu if the program daemonized itself. | |
1547 | [ISC-Bugs #21911] | |
d208bb04 | 1548 | |
01a44a77 SR |
1549 | ! When processing a request in the DHCPv6 server code that specifies |
1550 | an address that is tagged as abandoned (meaning we received a | |
1551 | decline request for it previously) don't attempt to move it from | |
1552 | the inactive to active pool as doing so can result in the server | |
1553 | crashing on an assert failure. Also retag the lease as active | |
1554 | and reset its timeout value. | |
1555 | [ISC-Bugs #21921] | |
9a111ee8 | 1556 | |
01a44a77 SR |
1557 | - Removed the restriction on using IPv6 addresses in IPv4 mode. This |
1558 | allows IPv4 options which contain IPv6 addresses to be specified. For | |
1559 | example the 6rd option can be specified and used like this: | |
1560 | [ISC-Bugs #23039] | |
d208bb04 | 1561 | |
01a44a77 SR |
1562 | option 6rd code 212 = { integer 8, integer 8, |
1563 | ip6-address, array of ip-address }; | |
1564 | option 6rd 16 10 2001:: 1.2.3.4, 5.6.7.8; | |
25f664a6 | 1565 | |
01a44a77 SR |
1566 | - Handle some DDNS corner cases better. Maintain the DDNS transaction |
1567 | information when updating a lease and cancel any existing transactions | |
9a111ee8 | 1568 | when removing the ddns information. |
01a44a77 | 1569 | [ISC-Bugs #23103] |
d424157d | 1570 | |
01a44a77 SR |
1571 | - Some fixes for LDAP |
1572 | [ISC-Bugs #21783] - Include lber library when building ldap | |
1573 | [ISC-Bugs #22888] - Enable the ldap code when buidling common | |
1574 | The above fixes are from Jiri Popelka at Red Hat. | |
3221151b | 1575 | |
01a44a77 SR |
1576 | - Modify the dlpi code to accept getmsg() returning a positive value. |
1577 | [ISC-Bugs #22824] | |
bea17697 SR |
1578 | |
1579 | ! In dhclient check the data for some string options for | |
1580 | reasonableness before passing it along to the script that | |
1581 | interfaces with the OS. | |
1582 | [ISC-Bugs #23722] | |
1583 | CVE: CVE-2011-0997 | |
c7aa4dd4 TM |
1584 | |
1585 | - DHCPv6 server now responds properly if client asks for a prefix that | |
1586 | is already assigned to a different client. [ISC-Bugs #23948] | |
4a5bfeac SR |
1587 | |
1588 | - Add the option "--no-pid" to the client, relay and server code, | |
1589 | to disable writing a pid file. Add the option "-pf pidfile" | |
1590 | to the relay to allow the user to supply the pidfile name at | |
1591 | runtime. Add the "with-relay6-pid-file" option to configure | |
1592 | to allow the user to supply the pidfile name for the relay | |
1593 | in v6 mode at configure time. | |
1594 | [ISC-Bugs #23351] [ISC-Bugs #17541] | |
5d082abd TM |
1595 | |
1596 | - 'dhclient' no longer waits a random interval after first starting up to | |
1597 | begin in the INIT state. This conforms to RFC 2131, but elects not to | |
9a111ee8 | 1598 | implement a 'SHOULD' direction in section 4.1. The goal of this change |
73c83820 | 1599 | is to start up faster. [ISC-Bugs #19660] |
9a111ee8 TM |
1600 | |
1601 | - Added 'initial-delay' parameter that specifies maximum amount of time | |
1602 | before client goes to the INIT state. The default value is 0. In previous | |
1603 | versions of the code client could wait up to 5 seconds. The old behavior | |
5d082abd | 1604 | may be restored by using 'initial-delay 5;' in the client config file. |
73c83820 | 1605 | [ISC-Bugs #19660] |
5d082abd TM |
1606 | |
1607 | - ICMP ping-check should now sit closer to precisely the number of seconds | |
1608 | configured (or default 1), due to making use of the new microsecond | |
1609 | scale timer internally to dhcpd. This corrects a bug where the server | |
1610 | may immediately timeout an ICMP ping-check if it was made late in the | |
73c83820 | 1611 | current second. [ISC-Bugs #19660] |
5d082abd TM |
1612 | |
1613 | - The DHCP client will schedule renewal and rebinding events in | |
1614 | microseconds if the DHCP server provided a lease-time that would result | |
1615 | in sub-1-second timers. This corrects a bug where a 2-second or lower | |
1616 | lease-time would cause the DHCP client to enter an infinite loop by | |
73c83820 | 1617 | scheduling renewal at zero seconds. [ISC-Bugs #19660] |
5d082abd TM |
1618 | |
1619 | - Client lease records are recorded at most once every 15 seconds. This | |
1620 | keeps the client from filling the lease database disk quickly on very small | |
73c83820 | 1621 | lease times. [ISC-Bugs #19660] |
5d082abd TM |
1622 | |
1623 | - To defend against RFC 2131 non-compliant DHCP servers which fail to | |
1624 | advertise a lease-time (either mangled, or zero in value) the DHCP | |
1625 | client now adds the server to the reject list ACL and returns to INIT | |
1626 | state to hopefully find an RFC 2131 compliant server (or retry in INIT | |
73c83820 | 1627 | forever). [ISC-Bugs #19660] |
023fbaa0 TM |
1628 | |
1629 | - Parameters configured to evaluate from user defined function calls can | |
1630 | now be correctly written to dhcpd.leases (as on 'on events' or dynamic | |
1631 | host records inserted via OMAPI). [ISC-Bugs #22266] | |
1632 | ||
1633 | - If a 'next-server' parameter is configured in a dynamic host record via | |
1634 | OMAPI as a domain name, the syntax written to disk is now correctly parsed | |
1635 | upon restart. [ISC-Bugs #22266] | |
656b1ece TM |
1636 | |
1637 | - The DHCP server now responds to DHCPLEASEQUERY messages from agents using | |
1638 | IP addresses not covered by a subnet in configuration. Whether or not to | |
1639 | respond to such an agent is still governed by the 'allow leasequery;' | |
1640 | configuration parameter, in the case of an agent not covered by a configured | |
1641 | subnet the root configuration area is examined. Server now also returns | |
1642 | vendor-class-id option, if client sent it. [ISC-Bugs #21094] | |
9a111ee8 | 1643 | |
fc06ee4f SR |
1644 | - Documentation fixes |
1645 | [ISC-Bugs #17959] add text to AIX section describing how to have it send | |
1646 | responses to the all-ones address. | |
1647 | [ISC-Bugs #19615] update the includes in dhcpctl/dhcpctl.3 to be more correct | |
1648 | [ISC-Bugs #20676] update dhcpd.conf.5 to include the RFC numbers for DDNS | |
1649 | ||
1185c766 TM |
1650 | - Relay no longer crashes, when DHCP packet is received over interface without |
1651 | any IPv4 address assigned. Also extended logging message about discarding | |
1652 | packets with invalid hlen with information about relevant interface name. | |
1653 | [ISC-Bugs #22409] | |
1654 | ||
c6455252 TM |
1655 | - Relay now properly logs that packet was received over interface without |
1656 | global IPv6 address [ISC-Bugs #24070] | |
1657 | ||
9a111ee8 TM |
1658 | - Linux Packet Filter interface improvement. sockaddr_pkt structure is used, |
1659 | rather than sockaddr. Packet ethertype is now forced to ETH_P_IP. | |
9369bdc1 TM |
1660 | [ISC-Bugs #18975] |
1661 | ||
fb30f3fc SR |
1662 | - Minor code cleanups - but note port change for #23196 |
1663 | [ISC-Bugs #23470] - Modify when an ignore return macro is defined to | |
1664 | handle unsed error return warnings for more versions of gcc. | |
1665 | [ISC-Bugs #23196] - Modify the reply handling in the server code to | |
1666 | send to a specified port rather than to the source port for the incoming | |
1667 | message. Sending to the source port was test code that should have | |
1668 | been removed. The previous functionality may be restored by defining | |
1669 | REPLY_TO_SOURCE_PORT in the includes/site.h file. We suggest you don't | |
1670 | enable this except for testing purposes. | |
1671 | [ISC-Bugs #22695] - Close a file descriptor in an error path. | |
1672 | [ISC-Bugs #19368] - Tidy up variable types in validate_port. | |
1673 | ||
c616de4f | 1674 | - Code cleanup: remove obsolete PROTO, KandR, INLINE and ANSI_DECL macros |
9a111ee8 | 1675 | [ISC-Bugs #13151] |
c616de4f TM |
1676 | |
1677 | - Compilation problem with gcc4.5 and omshell.c resolved. [ISC-Bugs #23831] | |
a34feb7d | 1678 | |
4f55e11b SR |
1679 | - Client Script fixes |
1680 | [ISC-Bugs #23045] Typos in client/scripts/openbsd | |
1681 | [ISC-Bugs #23565] In the client scripts add a zone id (interface id) if | |
1682 | the domain search address is link local. | |
1683 | [ISC-Bugs #1277] In some of the client scripts add code to handle the | |
1684 | case of the default router information being changed without the address | |
1685 | being changed. | |
1686 | ||
802fdea1 TM |
1687 | - Documentation cleanup |
1688 | [ISC-Bugs #23326] Updated References document, several man page updates | |
1689 | ||
9a111ee8 | 1690 | - Server no longer complains about NULL pointer when configured |
1b601efa TM |
1691 | server-identifier expression fails to evaluate. [ISC-Bugs #24547] |
1692 | ||
199f0b8a SR |
1693 | - Convert ISC_R_INPROGRESS status to ISC_R_SUCCESS when called from other |
1694 | than the dispatch handler. This fixes an issue where omshell, when | |
1695 | run from the same platform as the server, would appear to fail to | |
1696 | connect. This is a companion to #21839. [ISC-Bugs #23592] | |
1697 | ||
786f2e79 SR |
1698 | - Enlarge the buffer size used by the Omshell code and some of the |
1699 | print routines to allow for greater than 60 characters or, when | |
1700 | printing as hex strings, 20 characters. [ISC-Bugs #22743] | |
1701 | ||
7cfeb916 SR |
1702 | - In Solaris 11 switch to using sockets instead of DLPI, thanks |
1703 | to a patch form Oracle. [ISC-Bugs #24634]. | |
1704 | ||
9a111ee8 TM |
1705 | - Strict checks for content of domain-name DHCPv4 option can now be |
1706 | configured during compilation time. Even though RFC2132 does not allow | |
1707 | to store more than one domain in domain-name option, such behavior is | |
d15aa964 TM |
1708 | now enabled by default, but this may change some time in the future. |
1709 | See ACCEPT_LIST_IN_DOMAIN_NAME define in includes/site.h. | |
1710 | [ISC-Bugs #24167] | |
1711 | ||
beaed73f SR |
1712 | - DNS Update fix. A misconfigured server could crash during DNS update |
1713 | processing if the configuration included overlapping pools or | |
1714 | multiple fixed-address entries for a single address. This issue | |
1715 | affected both IPv4 and IPv6. The fix allows a server to detect such | |
1716 | conditions, provides the user with extra information and recommended | |
1717 | steps to fix the problem. If the user enables the appropriate option | |
1718 | in site.h then server will be terminated | |
1719 | [ISC-Bugs #23595] | |
1720 | ||
8bd96ccb SR |
1721 | ! Two packets were found that cause a server to halt. The code |
1722 | has been updated to properly process or reject the packets as | |
1723 | appropriate. Thanks to David Zych at University of Illinois | |
1724 | for reporting this issue. [ISC-Bugs #24960] | |
1725 | One CVE number for each class of packet. | |
1726 | CVE-2011-2748 | |
1727 | CVE-2011-2749 | |
1728 | ||
01a44a77 SR |
1729 | - Fix the code that checks for an existing DDNS transaction to cancel |
1730 | when removing DDNS information, so that we will continue with the | |
1731 | processing if we have a lease even if it doesn't have an outstanding | |
1732 | transaction. [ISC-Bugs #24682] | |
5a38e43f | 1733 | |
01a44a77 SR |
1734 | - Add AM_MAINTAINER_MODE to configure.ac to avoid rebuilding |
1735 | configuration files. [ISC-Bugs #24107] | |
5a38e43f | 1736 | |
01a44a77 SR |
1737 | - Add support for passing DDNS information to a DNS server over |
1738 | an IPv6 address. [ISC-Bugs #22647] | |
524705e5 | 1739 | |
01a44a77 SR |
1740 | - Enhanced patch for 23595 to handle IPv4 fixed addresses more |
1741 | cleanly. [ISC-Bugs #23595] | |
66be0ad1 | 1742 | |
01a44a77 SR |
1743 | ! Add a check for a null pointer before calling the regexec function. |
1744 | Without this check we could, under some circumstances, pass | |
1745 | a null pointer to the regexec function causing it to segfault. | |
1746 | Thanks to a report from BlueCat Networks. | |
1747 | [ISC-Bugs #26704]. | |
1748 | CVE: CVE-2011-4539 | |
57fbc772 | 1749 | |
01a44a77 SR |
1750 | ! Modify the DDNS handling code. In a previous patch we added logging |
1751 | code to the DDNS handling. This code included a bug that caused it | |
1752 | to attempt to dereference a NULL pointer and eventually segfault. | |
1753 | While reviewing the code as we addressed this problem, we determined | |
1754 | that some of the updates to the lease structures would not work as | |
1755 | planned since the structures being updated were in the process of | |
1756 | being freed: these updates were removed. In addition we removed an | |
1757 | incorrect call to the DDNS removal function that could cause a failure | |
1758 | during the removal of DDNS information from the DNS server. | |
1759 | Thanks to Jasper Jongmans for reporting this issue. | |
1760 | [ISC-Bugs #27078] | |
1761 | CVE: CVE-2011-4868 | |
57fbc772 | 1762 | |
01a44a77 SR |
1763 | - Fixed the code that checks if an address the server is planning |
1764 | to hand out is in a reserved range. This would appear as | |
1765 | the server being out of addresses in pools with particular ranges. | |
1766 | [ISC-Bugs #26498] | |
57fbc772 | 1767 | |
01a44a77 SR |
1768 | - In the DDNS code handle error conditions more gracefully and add more |
1769 | logging code. The major change is to handle unexpected cancel events | |
1770 | from the DNS client code. | |
1771 | [ISC-Bugs #26287] | |
57fbc772 | 1772 | |
01a44a77 SR |
1773 | - Tidy up the receive calls and eliminate the need for found_pkt. |
1774 | [ISC-Bugs #25066] | |
9a111ee8 | 1775 | |
01a44a77 SR |
1776 | - Add support for Infiniband over sockets to the server and |
1777 | relay code. We've tested this on Solaris and hope to expand | |
1778 | support for Infiniband in the future. This patch also corrects | |
1779 | some issues we found in the socket code. | |
1780 | [ISC-Bugs #24245] | |
197c917e | 1781 | |
01a44a77 SR |
1782 | - Add a compile time check for the presence of the noreturn attribute |
1783 | and use it for log_fatal if it's available. This will help code | |
1784 | checking programs to eliminate false positives. | |
1785 | [ISC-Bugs #27539] | |
8bd445a1 | 1786 | |
01a44a77 SR |
1787 | - Fixed many compilation problems ("set, but not used" warnings) for |
1788 | gcc 4.6 that may affect Ubuntu 11.10 users. [ISC-Bugs #27588] | |
83d409ae | 1789 | |
01a44a77 SR |
1790 | - Modify the code that determines if an outstanding DDNS request |
1791 | should be cancelled. This patch results in cancelling the | |
1792 | outstanding request less often. It fixes the problem caused | |
1793 | by a client doing a release where the TXT and PTR records | |
1794 | weren't removed from the DNS. | |
1795 | [ISC-BUGS #27858] | |
6aaaf6a4 | 1796 | |
01a44a77 SR |
1797 | - Use offsetof() instead of sizeof() to get the sizes for dhcpv6_relay_packet |
1798 | and dhcpv6_packet in several more places. Thanks to a report from | |
1799 | Bruno Verstuyft and Vincent Demaertelaere of Excentis. | |
1800 | [ISC-Bugs #27941] | |
4e0997c6 | 1801 | |
01a44a77 SR |
1802 | - Remove outdated note in the description of the bootp keyword about the |
1803 | option not satisfying the requirement of failover peers for denying | |
1804 | dynamic bootp clients. | |
1805 | [ISC-bugs #28574] | |
ad59838e | 1806 | |
01a44a77 SR |
1807 | - Multiple items to clean up IPv6 address processing. |
1808 | When processing an IA that we've seen check to see if the | |
1809 | addresses are usable (not in use by somebody else) before | |
1810 | handing it out. | |
1811 | When reading in leases from the file discard expired addresses. | |
1812 | When picking an address for a client include the IA ID in | |
1813 | addition to the client ID to generally pick different addresses | |
1814 | for different IAs. | |
1815 | [ISC-Bugs #23138] [ISC-Bugs #27945] [ISC-Bugs #25586] | |
1816 | [ISC-Bugs #27684] | |
f33dc722 | 1817 | |
01a44a77 SR |
1818 | - Remove unnecessary checks in the lease query code and clean up |
1819 | several compiler issues (some dereferences of NULL and treating | |
1820 | an int as a boolean). | |
1821 | [ISC-Bugs #26203] | |
4dc5a6b1 | 1822 | |
01a44a77 SR |
1823 | - Fix the NA and PD allocation code to handle the case where a client |
1824 | provides a preference and the server doesn't have any addresses or | |
1825 | prefixes available. Previously the server ignored the request with | |
1826 | this patch it replies with a NoAddrsAvail or NoPrefixAvail response. | |
1827 | By default the code performs according to the errata of August 2010 | |
1828 | for RFC 3315 section 17.2.2; to enable the previous style see the | |
1829 | section on RFC3315_PRE_ERRATA_2010_08 in includes/site.h. This option | |
1830 | may be removed in the future. | |
1831 | Thanks to Jiri Popelka at Red Hat for the patch. | |
1832 | [ISC-Bugs #22676] | |
3004baba | 1833 | |
01a44a77 SR |
1834 | - Fix up some issues found by static analysis. |
1835 | A potential memory leak and NULL dereference in omapi. | |
1836 | The use of a boolean test instead of a bitwise test in dst. | |
1837 | [ISC-Bugs #28941] | |
3004baba | 1838 | |
01a44a77 SR |
1839 | - Rotate the lease file when running in v6 mode. |
1840 | Thanks to Christoph Moench-Tegeder at Astaro for the | |
1841 | report and the first version of the patch. | |
1842 | [ISC-Bugs #24887] | |
9d97e644 | 1843 | |
01a44a77 SR |
1844 | - Correct code to calculate timing values in client to compare |
1845 | rebind value to infinity instead of renew value. | |
1846 | Thanks to Chenda Huang from H3C Technologies Co., Limited | |
1847 | for reporting this issue. | |
1848 | [ISC-Bugs #29062] | |
23d39ae2 | 1849 | |
01a44a77 SR |
1850 | - Fix some issues in the code for parsing and printing options. |
1851 | [ISC-Bugs #22625] - properly print options that have several fields | |
1852 | followed by an array of something for example "fIa" | |
1853 | [ISC-Bugs #27289] - properly parse options in declarations that have | |
1854 | several fields followed by an array of something for example "fIa" | |
1855 | [ISC-Bugs #27296] - properly determine if we parsed a 16 or 32 bit | |
1856 | value in evaluate_numeric_expression (extract-int). | |
1857 | [ISC-Bugs #27314] - properly parse a zero length option from | |
1858 | a lease file. Thanks to Marius Tomaschewski from SUSE for the report | |
1859 | and prototype patch for this ticket as well as ticket 27289. | |
23d39ae2 | 1860 | |
01a44a77 SR |
1861 | ! Previously the server code was relaxed to allow packets with zero |
1862 | length client ids to be processed. Under some situations use of | |
1863 | zero length client ids can cause the server to go into an infinite | |
1864 | loop. As such ids are not valid according to RFC 2132 section 9.14 | |
1865 | the server no longer accepts them. Client ids with a length of 1 | |
1866 | are also invalid but the server still accepts them in order to | |
1867 | minimize disruption. The restriction will likely be tightened in | |
1868 | the future to disallow ids with a length of 1. | |
1869 | Thanks to Markus Hietava of Codenomicon CROSS project for the | |
9a111ee8 | 1870 | finding this issue and CERT-FI for vulnerability coordination. |
01a44a77 SR |
1871 | [ISC-Bugs #29851] |
1872 | CVE: CVE-2012-3571 | |
0c9d3a81 | 1873 | |
01a44a77 SR |
1874 | ! When attempting to convert a DUID from a client id option |
1875 | into a hardware address handle unexpected client ids properly. | |
1876 | Thanks to Markus Hietava of Codenomicon CROSS project for the | |
9a111ee8 | 1877 | finding this issue and CERT-FI for vulnerability coordination. |
01a44a77 SR |
1878 | [ISC-Bugs #29852] |
1879 | CVE: CVE-2012-3570 | |
e1a40211 | 1880 | |
01a44a77 SR |
1881 | ! A pair of memory leaks were found and fixed. Thanks to |
1882 | Glen Eustace of Massey University, New Zealand for finding | |
1883 | this issue. | |
1884 | [ISC-Bugs #30024] | |
1885 | CVE: CVE-2012-3954 | |
e7e17397 | 1886 | |
01a44a77 SR |
1887 | - Existing legacy unit-tests have been migrated to Automated Test |
1888 | Framework (ATF). Several new tests have been developed. To enable | |
1889 | unit-tests, please use --with-atf in configure script. A Developer's | |
1890 | Guide has been added. To generate it, please use make devel in | |
1891 | the doc directory. It is currently in early stages of development, | |
1892 | but is expected to grow in the near future. [ISC-Bugs 25901] | |
ef86959b | 1893 | |
01a44a77 SR |
1894 | ! An issue with the use of lease times was found and fixed. Making |
1895 | certain changes to the end time of an IPv6 lease could cause the | |
1896 | server to abort. Thanks to Glen Eustace of Massey University, | |
1897 | New Zealand for finding this issue. | |
1898 | [ISC-Bugs #30281] | |
1899 | CVE: CVE-2012-3955 | |
ef86959b | 1900 | |
01a44a77 SR |
1901 | - Update the memory leakage debug code to work with v6. |
1902 | [ISC-Bugs #30297] | |
919f1407 | 1903 | |
01a44a77 SR |
1904 | - Relax the requirements for deleting an A or AAAA record. |
1905 | Previously the DDNS removal code required both the A or AAAA | |
1906 | record and the TXT record to exist. This requirement could | |
1907 | cause problems if something interrupted the removal leaving | |
1908 | the TXT record alone. This relaxation was codified in RFC 4703. | |
1909 | [ISC-Bugs #30734] | |
8a0d9ca4 | 1910 | |
01a44a77 SR |
1911 | - Modify the failover code to handle incorrect peer names |
1912 | better. Previously the structure holding the name might | |
1913 | have been freed inappropriately in some cases and not | |
1914 | freed in other cases. | |
1915 | [ISC-Bugs #30320] | |
17a8f0e2 | 1916 | |
01a44a77 SR |
1917 | - Add a configure option, enable-secs-byteorder, to deal with |
1918 | clients that do the byte ordering on the secs field incorrectly. | |
1919 | This field should be in network byte order but some clients | |
1920 | get it wrong. When this option is enabled the server will examine | |
1921 | the secs field and if it looks wrong (high byte non zero and low | |
1922 | byte zero) swap the bytes. The default is disabled. This option | |
1923 | is only useful when doing load balancing within failover. | |
1924 | [ISC-Bugs #26108] | |
badc999d | 1925 | |
01a44a77 SR |
1926 | - Fix a set of issues that were discovered via a code inspection |
1927 | tool. Thanks to Jiri Popelka and Tomas Hozza Red Hat for the logs | |
1928 | and patches. | |
1929 | [ISC-Bugs #23833] | |
0d8c3d6e | 1930 | |
9a111ee8 | 1931 | - Parsing unquoted base64 strings improved. Parser now properly handles |
01a44a77 | 1932 | strings that contain reserved names. [ISC-Bugs #23048] |
1e05d095 | 1933 | |
01a44a77 SR |
1934 | - Modify the nak_lease function to make some attempts to find a |
1935 | server-identifier option to use for the NAK. | |
1936 | [ISC-Bugs #25689] | |
1e05d095 | 1937 | |
01a44a77 SR |
1938 | - The client now passes information about the options it requested |
1939 | from the server to the script code via environment variables. | |
1940 | These variables are of the form requested_<option_name>=1 with | |
1941 | the option name being the same as used in the new_* and old_* | |
1942 | variables. | |
1943 | [ISC-Bugs #29068] | |
1943bbf8 | 1944 | |
01a44a77 SR |
1945 | - Add support for a simple check that the server id in a request message |
1946 | to a failover peer matches the server id of the server. This support | |
1947 | is enabled by editing the file includes/site.h and uncommenting the | |
1948 | definition for SERVER_ID_CHECK. The option has several restrictions | |
1949 | and issues - please read the comment in the site.h file before | |
1950 | enabling it. | |
1951 | [ISC-Bugs #31463] | |
8a513c43 | 1952 | |
01a44a77 SR |
1953 | - Tidy up some compiler issues in the debug code. |
1954 | [ISC-Bugs #26460] | |
d122accf | 1955 | |
adb95d23 | 1956 | - Move the dhcpd.conf example file to dhcpd.conf.example to avoid |
01a44a77 SR |
1957 | overwriting the dhcpd.conf file when installing a new version of |
1958 | ISC DHCP. The user will now need to manual copy and edit the | |
1959 | dhcpd.conf file as desired. | |
1960 | [ISC-Bugs #19337] | |
0d8c3d6e | 1961 | |
01a44a77 SR |
1962 | - Check the status value when trying to read from a connection to |
1963 | see if it may have been closed. If it appears closed don't try | |
1964 | to read from it again. This avoids a potential busy-wait like | |
1965 | loop when the peer names are mismatched. | |
1966 | [ISC-Bugs #31231] | |
590298e7 | 1967 | |
01a44a77 SR |
1968 | - Remove an unused variable to keep compilers happy. |
1969 | [ISC-Bugs #31983] | |
2b58b865 | 1970 | |
01a44a77 SR |
1971 | - Modify test makefiles to be more similar to standard makefiles |
1972 | and comment out a currently unused test. | |
1973 | [ISC-Bugs #32089] | |
600ee619 | 1974 | |
01a44a77 SR |
1975 | - Address static analysis warnings. |
1976 | [ISC-Bugs #33510] [ISC-Bugs #33511] | |
a5c7bf77 | 1977 | |
01a44a77 SR |
1978 | - Silence benign static analysis warnings. |
1979 | [ISC-Bugs #33428] | |
a5c7bf77 | 1980 | |
01a44a77 SR |
1981 | - Add check for 64-bit package for atf. |
1982 | [ISC-Bugs #32206] | |
a5c7bf77 | 1983 | |
01a44a77 SR |
1984 | - Use newer auto* tool packages and turn on RFC_3542 support on Mac OS. |
1985 | [ISC-Bugs #26303] | |
a5c7bf77 | 1986 | |
01a44a77 SR |
1987 | - Remove a variable when it isn't being used due to #ifdefs to avoid |
1988 | a compiler warning on Solaris using GCC. | |
1989 | [ISC-Bugs #33032] | |
0585235c | 1990 | |
01a44a77 SR |
1991 | - Add a check for too much whitespace in a config or lease file. |
1992 | Thanks to Paolo Pellegrino for finding the issue and a suggestion | |
1993 | for the patch. | |
1994 | [ISC-Bugs #33351] | |
0585235c | 1995 | |
01a44a77 SR |
1996 | - Fix several problems with using OMAPI to manipulate class and subclass |
1997 | objects. | |
1998 | [ISC-Bugs #27452] | |
f4bc8261 | 1999 | |
01a44a77 SR |
2000 | - Added a sleep call after killing the old client to allow time |
2001 | for the sockets to be cleaned. This should allow the -r option | |
2002 | to work more consistently. | |
2003 | [ISC-Bugs #18175] | |
33692791 | 2004 | |
01a44a77 SR |
2005 | - Missing files for ISC DHCP Developer's Guide are now included in |
2006 | the release tarballs. To generate this documentation, please use | |
2007 | make devel command in doc directory. [ISC-Bugs #32767] | |
928618dd | 2008 | |
01a44a77 SR |
2009 | - Update client script for use with openwrt. |
2010 | [ISC-Bugs #29843] | |
928618dd | 2011 | |
01a44a77 SR |
2012 | - Fix the socket handling for DHCPv6 clients to allow multiple instances |
2013 | of a client on a single machine to work properly. Previously only | |
2014 | one client would receive the packets. Thanks to Jiri Popelka at Red Hat | |
2015 | for the bug report and a potential patch. | |
2016 | [ISC-Bugs #34784] | |
3c941d42 | 2017 | |
01a44a77 SR |
2018 | - Added support for gentle shutdown after signal is received. |
2019 | [ISC-Bugs #32692] [ISC-Bugs 34945] | |
bdd8e747 | 2020 | |
01a44a77 SR |
2021 | - Enhance the DHCPv6 server logging to include the addresses that are assigned |
2022 | to the clients. | |
2023 | [ISC-Bugs #26377] | |
3da71461 | 2024 | |
01a44a77 SR |
2025 | - Fix an operation in the DDNS code to be a bitwise instead of logical or. |
2026 | [ISC-Bugs #35138] | |
fdfebedf | 2027 | |
7aa153b8 | 2028 | |
adbef119 DH |
2029 | Changes since 4.1.0 (new features) |
2030 | ||
d340bc24 DH |
2031 | - Failover port configuration can now be left to defaults (port 647) as |
2032 | described in the -12 revision of the Failover draft (and assigned by | |
4b97eaff | 2033 | IANA). Thanks in part to a patch from David Cantrell at Red Hat. |
adbef119 | 2034 | |
0829d595 DH |
2035 | - If configured, dhclient may now transmit to an anycast MAC address, |
2036 | rather than using a broadcast address. Thanks to a patch from David | |
2037 | Cantrell at Red Hat. | |
2038 | ||
8a3c1e33 PS |
2039 | - Added client support for setting interface MTU and metric, thanks to |
2040 | Roy "UberLord" Marples <roy@marples.name>. | |
2041 | ||
a41d7a25 PS |
2042 | - Added client -D option to specify DUID type to send. |
2043 | ||
9e3eb22a DH |
2044 | - A new failover configuration parameter has been introduced for those |
2045 | environments where DHCP servers can be reasonably guaranteed to be | |
2046 | "down" when the failover TCP socket is severed, "auto-partner-down". | |
2047 | This parameter is not generally safe, and by default is disabled, so | |
2048 | please carefully review the documentation of this parameter in the | |
2049 | dhcpd.conf(5) manpage before determining to use it yourself. | |
2050 | ||
33ea4622 DH |
2051 | - Added a configuration function, 'gethostname()', which calls the system |
2052 | function of the same name and presents the results as a data expression. | |
2053 | This function can be used to incorporate the system level hostname of | |
2054 | the system the DHCP software is operating on in responses or queries (such | |
2055 | as including a failover partner's hostname in a dhcp message or binding | |
2056 | scope, or having a DHCP client send any system hostname in the host-name or | |
2057 | FQDN options by default). | |
2058 | ||
5a671e87 DH |
2059 | - The dhcp-renewal-time and dhcp-rebinding-time options may now be configured |
2060 | for DHCPv4 operation and used independently of the dhcp-lease-time | |
2061 | calculations. Invalid renew and rebinding times (e.g., greater than the | |
2062 | determined lease time) are omitted. | |
2063 | ||
adb95d23 | 2064 | - Processing the DHCP to DNS server transactions in an asynchronous fashion, |
45adf35c | 2065 | the DHCP server or client can now continue with its processing while |
98bf1607 | 2066 | awaiting replies from the DNS server. |
c900c5b2 DH |
2067 | |
2068 | - The 'hardware [ethernet|etc] ...;' parameter in host records has been | |
2069 | extended to attempt to match DHCPv6 clients by the last octets of a | |
2070 | DUID-LL or DUID-LLT provided by the client. | |
2071 | ||
59112e84 SR |
2072 | Changes since 4.1.0 (bug fixes) |
2073 | ||
62f6843d MA |
2074 | - Remove infinite loop in token_print_indent_concat(). |
2075 | ||
59112e84 SR |
2076 | - Validate the argument to the -p option. |
2077 | ||
47e6eb82 DH |
2078 | - The notorious 'option <unknown> ... larger than buffer' log line, |
2079 | which is seen in some malformed DHCP client packets, was modified. | |
2080 | It now logs the universe name, and does not log the length values | |
2081 | (which are bogus corruption read from the packet anyway). It also | |
2082 | carries a hopefully more useful explanation. | |
2083 | ||
159c89d7 EH |
2084 | - Suppress spurious warnings from configure about --datarootdir |
2085 | ||
1aa0fe5e DH |
2086 | - A bug was fixed that caused the server not to answer some valid Solicit |
2087 | and Request packets, if the dynamic range covering any requested addresses | |
2088 | had been deleted from configuration. | |
2089 | ||
cd51403d SR |
2090 | - Update the code to deal with GCC 4.3. This included two sets of changes. |
2091 | The first is to the configuration files to include the use of | |
571c38b0 | 2092 | AC_USE_SYSTEM_EXTENSIONS. The second is to deal with return values that |
cd51403d SR |
2093 | were being ignored. |
2094 | ||
64e1823d DH |
2095 | - The db-time-format option was documented in manpages. |
2096 | ||
26e59ee9 DH |
2097 | - Using reserved leases no longer results in 'lease with binding state |
2098 | free not on its queue' error messages, thanks to a patch from Frode | |
2099 | Nordahl. | |
2100 | ||
70ea9345 PS |
2101 | - Fix a build error in dhcrelay, using older versions of gcc with |
2102 | dhcpv6 disabled. | |
2103 | ||
8d7dca58 | 2104 | - Two uninitialized stack structures are now memset to zero, thanks to a |
4b97eaff | 2105 | patch from David Cantrell at Red Hat. |
819186b7 | 2106 | |
f4534b17 DH |
2107 | - Fixed a cosmetic bug where pretty-printing valid domain-search options would |
2108 | result in an erroneous error log message ('garbage in format string'). | |
2109 | ||
f9453d21 DH |
2110 | - A bug in DLPI packet transmission (Solaris, HP/UX) that caused the server |
2111 | to stop receiving packets is fixed. The same fix also means that the MAC | |
2112 | address will no longer appear 'bogus' on DLPI-based systems. | |
2113 | ||
2114 | - A bug in select handling was discovered where the results of one select() | |
2115 | call were discarded, causing the server to process the next select() call | |
2116 | and use more system calls than required. This has been repaired - the | |
2117 | sockets will be handled after the first return from select(), resulting in | |
2118 | fewer system calls. | |
2119 | ||
a3dcc0b1 DH |
2120 | - The update-conflict-detection feature would leave an FQDN updated without |
2121 | a DHCID (still currently implemented as a TXT RR). This would cause later | |
2122 | expiration or release events to fail to remove the domain name. The feature | |
2123 | now also inserts the client's up to date DHCID record, so records may safely | |
2124 | be removed at expiration or release time. Thanks to a patch submitted by | |
2125 | Christof Chen. | |
2126 | ||
95fd7038 DH |
2127 | - Memory leak in the load_balance_mine() function is fixed. This would |
2128 | leak ~20-30 octets per DHCPDISCOVER packet while failover was in use | |
2129 | and in normal state. | |
2130 | ||
2131 | - Various compilation fixes have been included for the memory related | |
2132 | DEBUG #defines in includes/site.h. | |
2133 | ||
8a3c1e33 PS |
2134 | - Fixed Linux client script 'unary operator expected' errors with DHCPv6. |
2135 | ||
2136 | - Fixed setting hostname in Linux hosts that require hostname argument | |
2137 | to be double-quoted. Also allow server-provided hostname to | |
2138 | override hostnames 'localhost' and '(none)'. | |
2139 | ||
dedde1ba DH |
2140 | - Fixed failover reconnection retry code to continue to retry to reconnect |
2141 | rather than restarting the listener. | |
2142 | ||
a57df74a DH |
2143 | - Compilation on Solaris with USE_SOCKETS defined in includes/site.h has |
2144 | been repaired. Other USE_ overrides should work better. | |
2145 | ||
2146 | - A check for the local flavor of IFNAMSIZ had a broken 'else' condition, | |
2147 | that probably still resulted in the correct behaviour (but wouldn't use | |
2148 | a larger defined value provided by the host OS). | |
2149 | ||
350576c5 DH |
2150 | - Fixed a bug where an OMAPI socket disconnection message would not result |
2151 | in scheduling a failover reconnection, if the link had not negotiated a | |
2152 | failover connect yet (e.g.: connection refused, asynch socket connect() | |
2153 | timeouts). | |
2154 | ||
792156a9 DH |
2155 | - A bug was fixed that caused the 'conflict-done' state to fail to be parsed |
2156 | in failover state records. | |
2157 | ||
8a4e543b DH |
2158 | ! A stack overflow vulnerability was fixed in dhclient that could allow |
2159 | remote attackers to execute arbitrary commands as root on the system, | |
2160 | or simply terminate the client, by providing an over-long subnet-mask | |
1b12d999 | 2161 | option. CERT VU#410676 - CVE-2009-0692 |
8a4e543b | 2162 | |
a1308b64 DH |
2163 | - Fixed a bug where relay agent options would never be returned when |
2164 | processing a DHCPINFORM. | |
2165 | ||
1b12d999 DH |
2166 | - Versions 3.0.x syntax with multiple name->code option definitions is now |
2167 | supported. Note that, similarly to 3.0.x, for by-code lookups only the | |
2168 | last option definition is used. | |
2169 | ||
d453265f PS |
2170 | - Fixed a bug where a time difference of greater than 60 seconds between a |
2171 | failover pair could cause the primary to crash on contact with the | |
2172 | secondary. Thanks to a patch from Steinar Haug. | |
2173 | ||
3e29af1e PS |
2174 | - Don't look for IPv6 interfaces on Linux when running in DHCPv4 mode. |
2175 | Thanks to patches from Matthew Newton and David Cantrell. | |
2176 | ||
b8d45c67 DH |
2177 | - Secondary servers in a failover pair will now perform ddns removals if |
2178 | they had performed ddns updates on a lease that is expiring, or was | |
2179 | released through the primary. As part of the same fix, stale binding scopes | |
2180 | will now be removed if a change in identity of a lease's active client is | |
2181 | detected, rather than simply if a lease is noticed to have expired (which it | |
2182 | may have expired without a failover server noticing in some situations). | |
2183 | ||
583c1c16 DH |
2184 | - A patch supplied by David Cantrell at RedHat was applied that detects |
2185 | invalid calling parameters given to the ns_name_ntop() function. | |
2186 | Specifically, it detects if the caller passed a pointer and size pair | |
2187 | that causes the pointer to integer-wrap past zero. | |
2188 | ||
e4e3a2ab DH |
2189 | ! Fixed a fenceposting bug when a client had two host records configured, |
2190 | one using 'uid' and the other using 'hardware ethernet'. CVE-2009-1892 | |
95f5d38c | 2191 | |
875e99dc SR |
2192 | - Fixed the check in the dhcp_interface_signal_handler routine to verify |
2193 | the existence of the linked signal handler before calling it. | |
2194 | ||
2267da84 DH |
2195 | - Both host and subnet6 configuration groups are now included whether a |
2196 | fixed-address6 (DHCPv6) is in use or not. Host scoped configuration takes | |
2197 | precedence. This fixes two bugs, one where host scoped configuration | |
2198 | would not be included from a non-fixed-address6 host record, and the equal | |
2199 | and opposite bug where subnet6 scoped configuration would not be used when | |
571c38b0 | 2200 | over-riding values were not present in a matching fixed-address6 host |
2267da84 DH |
2201 | configuration. |
2202 | ||
cd3f0b9b DH |
2203 | - ./configure now checks to ensure the intX_t and u_intX_t types are defined, |
2204 | correcting a compilation failure when using Sun's compiler. | |
2205 | ||
0493fdca SR |
2206 | - Modified the handling of a connection to avoid releasing the omapi io |
2207 | object for the connection while it is still in use. One symptom from | |
2208 | this error was a segfault when a failover secondary attempted to connect | |
2209 | to the failover primary if their clocks were not synchronized. | |
2210 | ||
95bba8b6 SR |
2211 | - Clean up to allow compilation with gcc 2.95.4 on FreeBSD. Remove an |
2212 | extra semi-colon from common/dns.c and moved setting a variable to NULL | |
2213 | in server/dhcpv6.c to allow the compiler to decide that the variable | |
9a111ee8 | 2214 | was always properly set. |
95bba8b6 | 2215 | |
adbef119 | 2216 | Changes since 4.1.0b1 |
ebf076fe EH |
2217 | |
2218 | - A missing "else" in dhcrelay.c could have caused an interface not to | |
2219 | be recognized. | |
61d75ea2 | 2220 | |
a4ffedd1 DH |
2221 | Changes since 4.1.0a2 |
2222 | ||
2223 | - A cosmetic bug in DHCPDECLINE processing was fixed which caused all | |
2224 | successful DHCPDECLINEs to be logged as "not found" rather than | |
2225 | "abandoned". | |
2226 | ||
6ff3b26d FD |
2227 | - Added configuration file examples for DHCPv6. |
2228 | ||
1387545f DH |
2229 | - Some failover debugging #defines have been better defined and some |
2230 | high frequency messages moved to a deeper debugging symbol. | |
2231 | ||
2232 | - The CLTT parameter in failover is now only updated by client activity, | |
2233 | and not by failover binding updates (taking on the peer's CLTT). | |
2234 | ||
2235 | - Failover BNDUPD messages are now discarded if they conflict with an | |
d7ac7a27 | 2236 | update that has been transmitted, but not acknowledged. |
1387545f | 2237 | |
399d3dbe DH |
2238 | - A bug cleaning up unknown-xxx temporary option definitions was fixed. |
2239 | ||
fbcee149 DH |
2240 | - Delayed-ack is now a compile-time option, compiled out by default. |
2241 | This feature is simply too experimental for right now, and causes | |
2242 | some problems to some failover installations. We will revisit this | |
2243 | in future releases. | |
2244 | ||
f1672d89 DH |
2245 | - The !inet_pton() call in res_mkupdrec was adjusted to '<= 0' as |
2246 | inet_pton returns either 1, 0, or -1. | |
2247 | ||
236d3a99 DH |
2248 | - A dhclient-script for MacOS X has been included, which enables |
2249 | 'dhclient -6' support. | |
2250 | ||
efa5e6b9 DH |
2251 | - DDNS removal routines were updated so that the DHCID is not removed until |
2252 | the client has been deprived of all A and AAAA records (not only the last | |
2253 | one of either of those). This resolves a bug where dual stack clients | |
2254 | would not be able to regain their names after either expiration event. | |
2255 | ||
7d6180be | 2256 | Changes since 4.1.0a1 |
edcb5c46 EH |
2257 | |
2258 | - Corrected list of failover state values in dhcpd man page. | |
2259 | ||
51e7687f EH |
2260 | - Fixed a bug that caused some request types to be logged incorrectly. |
2261 | ||
20210a7b EH |
2262 | - Clients that sent a parameter request list containing the |
2263 | routers option before the subnet mask option were receiving | |
2264 | only the latter. Fixed. | |
2265 | ||
535485df EH |
2266 | - The server wasn't always sending the FQDN option when it should. |
2267 | ||
8fbb55ff DH |
2268 | - A partner-down failover server no longer emits 'peer holds all free leases' |
2269 | if it is able to newly-allocate one of the peer's leases. | |
2270 | ||
61220a00 EH |
2271 | - Fixed a coredump when adding a class via OMAPI. |
2272 | ||
c40e954c EH |
2273 | - Check whether files are zero length before trying to parse them. |
2274 | ||
63971a83 DH |
2275 | - Ari Edelkind's PARANOIA patch has been included and may be compiled in |
2276 | via two ./configure parameters, --enable-paranoia and | |
2277 | --enable-early-chroot. | |
2278 | ||
66cebfcb DH |
2279 | - ./configure was extended to cover many optional build features, such |
2280 | as failover, server tracing, debugging, and the execute() command. | |
2281 | ||
f8cbf390 DH |
2282 | - There is now a default 1/4 of a second scheduled delay between delayed |
2283 | fsync()'s, it can be configured by the max-ack-delay configuration | |
2284 | parameter. | |
2285 | ||
8269561d DH |
2286 | - A bug was fixed where the length of a hostname was miscalculated, so that |
2287 | hosts were given odd-looking domain names ("foo.bar.ba.example.com"). | |
2288 | ||
b445a411 DH |
2289 | - Shared network selection should be done from the innermost relay |
2290 | valid link-address field, rather than the outermost. | |
2291 | ||
bd72740e FD |
2292 | - Prefix pools are attached to shared network scopes. |
2293 | ||
9322442f FD |
2294 | - Merged IA_XX related structures. |
2295 | ||
8dea7ba7 FD |
2296 | - Add DHCPv6 files in configure. |
2297 | ||
4619c0a2 DH |
2298 | - A memory leak when using omapi has been fixed. |
2299 | ||
9ac4206a DH |
2300 | - DHCPv6 vendor-class options (VSIO) are now only sent when they appear |
2301 | on the DHCPv6 ORO. This resolves a bug where VSIO options were placed | |
2302 | in IA_NA encapsulated options fields. | |
2303 | ||
420d8b3f FD |
2304 | - Integrated client with stateless, temporary address and prefix delegation |
2305 | support. | |
2306 | ||
40ec5f38 DH |
2307 | - A double-dereference in dhclient transmission of DHCPDECLINEs was |
2308 | repaired. | |
2309 | ||
80097764 FD |
2310 | - Fix handling of format code 'Z'. |
2311 | ||
ffbaa880 FD |
2312 | - Support "-1" argument in DHCPv6. |
2313 | ||
7de20a95 EH |
2314 | - Merge DHCPv6-only "dhcrelay6" into general-purpose "dhcrelay" (use |
2315 | "-6" option to select DHCPv6 mode). | |
2316 | ||
d352732e EH |
2317 | - Fix handling of -A and -a flags in dhcrelay; it was failing to expand |
2318 | packet size as needed to add relay agent options. | |
2319 | ||
7d6180be DH |
2320 | - A bug in subnet6 parsing where options contained in subnet6 clauses would |
2321 | not be applied to clients addressed within that network was repaired. | |
2322 | ||
2323 | - When configuring a "subnet {}" or "subnet6 {}" without an explicit | |
2324 | shared-network enclosing it, the DHCP software would synthesize a | |
2325 | shared-network to contain the subnet. However, all configuration | |
2326 | parameters within the subnet more intuitively belong "to any client | |
2327 | on that interface", or rather the synthesized shared-network. So, | |
2328 | when a shared-network is synthesized, it is used to contain the | |
2329 | configuration present inside the subnet {} clause. This means that | |
2330 | the configuration will be valid for all clients on that network, not | |
2331 | just those addressed out of the stated subnet. If you intended the | |
2332 | opposite, the workaround is to explicitly configure an empty | |
2333 | shared-network. | |
2334 | ||
2335 | - A bug was fixed where Information-Request processing was not sourcing | |
2336 | configured option values. | |
2337 | ||
2338 | - A warning was added since the DHCPv6 processing software does not yet | |
2339 | support class statements. | |
2340 | ||
adb95d23 | 2341 | - Compilation warnings on GCC 4.3 relating to bootp source address |
dd484ced DH |
2342 | selection were repaired. |
2343 | ||
ecddae64 DH |
2344 | - The v6 BSD socket method was updated to use a single UDP BSD socket |
2345 | no matter how many interfaces are involved, differentiating the | |
2346 | interfaces the packets were received on by the interface index supplied | |
2347 | by the OS. | |
2348 | ||
2349 | - The relay agent no longer listens to the All DHCP Servers Multicast | |
2350 | address. | |
2351 | ||
2352 | - A bug was fixed in data_string_sprintfa() where va_start was only called | |
2353 | once for two invocations of vsprintf() variants. | |
2354 | ||
d104d45b DH |
2355 | - ERO (RFC 4994) server support. |
2356 | ||
2357 | - Basic and partial DHCPv6 leasequery support. | |
2358 | ||
2359 | - Reliable DHCPv6 release (previous behavior, send release and exit, is | |
2360 | still available with dhclient -6 -1 -r). | |
2361 | ||
01a54c17 | 2362 | Changes since 4.0.0 (new features) |
3c12f746 | 2363 | |
6d7f9584 FD |
2364 | - Added DHCPv6 rapid commit support. |
2365 | ||
4cafb815 | 2366 | - Added explicit parser support for zero-length DHCP options, such as |
6d7f9584 | 2367 | rapid-commit, via format code 'Z'. |
4cafb815 | 2368 | |
022fe95e EH |
2369 | - It's now possible to update the "ends" field of a lease with OMAPI. |
2370 | This is useful if you want not only to release a lease, but also make | |
2371 | it available for reuse right away. Hat tip to Christof Chen. | |
2372 | ||
9a111ee8 | 2373 | - Fixed definition of the iaaddr hash functions to use the correct |
1dcc3612 SK |
2374 | functions when referencing and dereferencing memory. |
2375 | ||
aabfa4de FD |
2376 | - Some definitions not in phase with the IANA registry were updated. |
2377 | ||
0674055a FD |
2378 | - Allocated interface IDs are better controlled ('u' bit set to zero, |
2379 | reserved IDs avoided). | |
2380 | ||
b51c785f FD |
2381 | - Unicast options are taken into account only for RENEWs. |
2382 | ||
900405e9 FD |
2383 | - NoAddrsAvail answers to SOLICITs are always ADVERTISEs even when a SOLICIT |
2384 | carries a rapid-commit option. | |
2385 | ||
96b620e5 FD |
2386 | - Return in place of raise an impossible condition when one tries to release |
2387 | an empty active lease. | |
2388 | ||
be62cf06 FD |
2389 | - Timer granularity is now 1/100s in the DHCPv6 client. |
2390 | ||
01a54c17 EH |
2391 | - The dhclient-script was updated to create a host route for the default |
2392 | gateway if the supplied subnet mask for an IPv4 address was a /32. This | |
2393 | allows the client to work in 'captive' network environments, where the | |
2394 | operator does not want clients to crosstalk directly. | |
2395 | ||
adb95d23 | 2396 | - MINUS tokens should be parsable again. |
01a54c17 EH |
2397 | |
2398 | - Multiple (up to "delayed-ack x;" maximum) DHCPv4 packets are now queued and | |
2399 | released in bursts after single fsync() events when the upper limit is | |
2400 | reached or if the receiving sockets go dry. The practical upshot is | |
2401 | that fsync-coupled server performance is now multiplicitively increased. | |
2402 | The default delayed ack limit is 28. Thanks entirely to a patch from | |
2403 | Christof Chen. | |
2404 | ||
2405 | Changes since 4.0.0 (bug fixes) | |
2406 | ||
2407 | - DHCP now builds on AIX. | |
2408 | ||
2409 | - Exit with warning when DHCPv6-specific statements are used in the | |
2410 | config file but -6 is not specified. | |
2411 | ||
2412 | - Fixed "--version" flag in dhcrelay | |
2413 | ||
2414 | - The 'min-secs' configuration parameter's log message has been updated to | |
2415 | be more helpful. | |
2416 | ||
2417 | - The warning logged when an address range doesn't fit in the subnets | |
2418 | they were declared has been updated to be more helpful and identify the | |
2419 | typo in configuration that created the spanning addresses. | |
2420 | ||
2421 | - A bug in failover pool rebalancing that caused POOLREQ message ping-pongs | |
2422 | was repaired. | |
2423 | ||
2424 | - A flaw in failover pool rebalancing that could cause POOLREQ messages to | |
2425 | be sent outside of the min-balance/max-balance scheduled intervals has | |
2426 | been repaired. | |
2427 | ||
2428 | - A cosmetic bug during potential-conflict recovery that caused the peer's | |
2429 | 'conflict-done' state message to be logged as 'unknown-state' has been | |
2430 | repaired. It is now logged correctly. | |
2431 | ||
49f61135 DH |
2432 | - A bug was fixed where the 'giaddr' may be used to find the client's subnet |
2433 | rather than its own 'ciaddr'. | |
2434 | ||
41d4652f DH |
2435 | - A log message was introduced to clarify the situation where a failover |
2436 | 'address' parameter (the server's local address) did not resolve to an | |
2437 | IPv4 address. | |
2438 | ||
2c9bf1f4 DH |
2439 | - The minimum site code value was set to 224 in 3.1.0 to track RFC3942. This |
2440 | broke a lot of legacy site local configurations. The new code in place will | |
2441 | track site local space minimum option codes and logs a warning to encourage | |
2442 | updates and exploration of site local code migration problems. Option | |
2443 | codes less than 128 in site local spaces remain inaccessible. | |
2444 | ||
2445 | - A possible relay agent option bug was repaired where random server | |
2446 | initialization state may have been used to signal the relay agent | |
2447 | information options sub-option code for the 'END' of the option space. | |
2448 | ||
cff9b78f SK |
2449 | - Fixes to allow code to compile and run on Solaris 9. |
2450 | ||
c4d29896 SK |
2451 | - Fixes to allow code to compile on Mac OS X Leopard (10.5). |
2452 | ||
57fcb8d9 SK |
2453 | - When server is configured with options that it overrides, a warning is |
2454 | issued when the configuration file is read, rather than at the time the | |
2455 | option is overridden. This was important, because the warning was given | |
9a111ee8 | 2456 | every time the option was overridden, which could create a lot of |
57fcb8d9 SK |
2457 | unnecessary logging. |
2458 | ||
219a65eb DH |
2459 | - Fixed a compilation problems on platforms that define a value for FDDI, |
2460 | which conflicts with a dhcp configuration syntax token by the same name. | |
2461 | ||
ffdf3c8c DH |
2462 | - When a failover server suspects it has encountered a peer running a |
2463 | version 3.0.x failover server, a warning that the failover wire protocol | |
2464 | is incompatible is printed. | |
2465 | ||
2466 | - The failover server no longer issues a floating point error if it encounters | |
2467 | a previously undefined option code. | |
2468 | ||
00a002fc MA |
2469 | - Fix startup error messages to report a missing "subnet6 declaration", rather |
2470 | than a missing "subnet declaration", when running as a DHCPv6 server. | |
2471 | ||
9a111ee8 | 2472 | - DHCPv6 client timestamp in DUID was based on the year 1970 rather |
7e9f7a1b FD |
2473 | than the year 2000. |
2474 | ||
e2cfde76 FD |
2475 | - Warn when attempting to use a hardware parameter in DHCPv6. |
2476 | ||
cabdb9b1 FD |
2477 | - DHCPv6 released resources are now marked as released by the client. |
2478 | ||
5d89d60f FD |
2479 | - 'Soft' bindings have no more side-effects. |
2480 | ||
61d75ea2 DH |
2481 | Changes since 4.0.0b3 |
2482 | ||
2483 | - The reverse dns name for PTR updates on IPv6 addresses has been fixed to | |
2484 | use ip6.arpa. rather than default to in-addr.arpa and require user | |
2485 | configuration. | |
76db44f9 | 2486 | |
e32529a5 EH |
2487 | - dhc6_lease_destroy() and dhc6_ia_destroy() now set lease and IA pointers |
2488 | to NULL after freeing, to prevent subsequent accesses to freed memory. | |
2489 | ||
9a111ee8 | 2490 | - The DHCPv6 server would not send the preference option unless the |
76db44f9 SK |
2491 | client requested it, via the ORO. This has been fixed, so the DHCPv6 |
2492 | server will always send the preference value if it is configured. | |
e4a6be15 | 2493 | |
9a111ee8 TM |
2494 | - When addresses were passed as hints to the server in an IA, they were |
2495 | incorrectly handled, sometimes being treated as an error. Now the | |
6f76de58 SK |
2496 | server will treat these as hints and ignore them if it cannot supply |
2497 | a requested address. | |
2498 | ||
703873ab DH |
2499 | - If the client had multiple addresses, and one expired (was not renewed |
2500 | by the server), the client would continue to attempt to renew the same | |
2501 | old address over and over. Now, the client will omit any expired | |
2502 | addresses from future Confirm, Renew, or Rebind messages. | |
2503 | ||
2504 | - dhclient -6 will now select renew/rebind timers based upon the longest | |
2505 | address expiration time rather than the shortest expiration time, in | |
2506 | order to avoid cascading renewals in the event a server elects not to | |
2507 | extend one of multiple IAADDR leases. | |
2508 | ||
b024480e DH |
2509 | - The server now limits clients that request multiple addresses to one |
2510 | address per IA by default, which can be adjusted through the | |
2511 | "limit-addrs-per-ia" configuration option. | |
2512 | ||
c0216cb7 DH |
2513 | - The DHCPv6 client now issues fresh transaction IDs on Renew and Rebind |
2514 | message exchanges, rather than using the most recent ID. | |
2515 | ||
1ac57173 FD |
2516 | - The DHCPv6 server now replies to Information-Request messages. |
2517 | ||
83835822 DH |
2518 | - A bug was fixed in the dhclient-script for BSDs to correctly carry error |
2519 | codes through some conditions. | |
2520 | ||
c54db708 FD |
2521 | - The parsing of some options in the dhclient lease file, in particular |
2522 | the success DHCPv6 status-code, was fixed. | |
2523 | ||
e5d83524 DH |
2524 | - A bug was fixed that caused the DHCPv6 ORO option to be corrupted with |
2525 | seemingly random values. | |
2526 | ||
821f2dda DH |
2527 | - A reference overleak in DHCPv6 shared network processing was repaired. |
2528 | ||
f8b3c6f4 DH |
2529 | - ./configure now autodetects local database locations rather than trying |
2530 | to put dhcpd.leases and dhclient.leases in /usr/local/var/db, which no | |
2531 | one ever has. | |
2532 | ||
9a111ee8 TM |
2533 | - Regression fix for bug where server advertised a IPv6 address in |
2534 | response to a SOLICIT but would not return the address in response | |
b9137d42 SK |
2535 | to a REQUEST. |
2536 | ||
9f1d5a2f DH |
2537 | - A bug was fixed where the DHCPv6 server puts the NoAddrsAvail status |
2538 | code in the IA_NA was fixed. The status code now appears in the root | |
2539 | level. | |
2540 | ||
e4a6be15 DH |
2541 | Changes since 4.0.0b2 |
2542 | ||
65cf86d7 EH |
2543 | - Clarified error message when lease limit exceeded |
2544 | ||
b1d3778c DH |
2545 | - Relative time may now be used as a qualifier for 'allow' and 'deny' access |
2546 | control lists. These directives may be used to assist in re-addressing | |
2547 | address pools without having to constantly reconfigure the server. Please | |
2548 | see 'man dhcpd.conf' for more information on allow/deny 'after time' syntax. | |
2549 | Thanks to a patch from Christof Chen. | |
2550 | ||
bead14ea DH |
2551 | - The server will now include multiple IA_NA's and multiple IAADDRs within |
2552 | them, if advertised by the client. It still only seeks to allocate one | |
2553 | new address. | |
2554 | ||
f765ec36 SK |
2555 | Changes since 4.0.0b1 |
2556 | ||
75135a3f | 2557 | - Use different paths for PID and lease files when running in DHCPv4 |
adb95d23 | 2558 | or DHCPv6 mode, so that servers for both protocols can be run |
75135a3f EH |
2559 | simultaneously on a single interface. |
2560 | ||
5c2d55c7 EH |
2561 | - Fixed a buffer overflow error which could have allowed a denial |
2562 | of service under unusual server configurations | |
2563 | ||
2564 | - Eliminated a spurious error message from the client | |
2565 | ||
9a111ee8 | 2566 | - A number of bugs with the internal handling of lease state on the |
f765ec36 | 2567 | server have been fixed. Some of these could cause server crashes. |
fa9b593d | 2568 | |
edb1283e DH |
2569 | - The peer_wants_leases() changes pulled up from 3.1.0 were corrected, |
2570 | 'never used' leases will no longer consistently shift between servers | |
2571 | on every pool rebalance run. | |
2572 | ||
c71c6399 DH |
2573 | - sendmsg()/recvmsg() control buffers are now declared in such a way to |
2574 | ensure they are correctly aligned on all (esp. 64-bit) architectures. | |
2575 | ||
5279b8f3 DH |
2576 | - The client leasing subsystem was streamlined and corrected to account |
2577 | more closely for changes in client link attachment selection. | |
2578 | ||
ab3a540f | 2579 | Changes since 4.0.0a3 |
763cba6b | 2580 | |
9a111ee8 | 2581 | - The DHCP server no longer requires a "ddns-update-style" statement, |
884a458f SK |
2582 | and now defaults to "none", which means DNS updates are disabled. |
2583 | ||
fa9b593d DH |
2584 | - Log messages when failover peer names mismatch have been improved to |
2585 | point out the problem. | |
2586 | ||
9a111ee8 | 2587 | - Bug where server advertised a IPv6 address in response to a SOLICIT |
1b5053b5 SK |
2588 | but would not return the address in response to a REQUEST. Thanks to |
2589 | Dennis Kou for finding the bug. | |
2590 | ||
c886c298 SK |
2591 | - Fixed an error causing the server to lock up on lease expiration, |
2592 | reported independently by Jothilingam Vasu and Dennis Kou. | |
2593 | ||
eaf7eb17 DH |
2594 | - Fixed a ./configure bug where compile tests were failing due to |
2595 | "-Werror" (unused variable) rather than the actual test failure. Lead | |
2596 | to inconsistent and unworkable auto-configurations. | |
2597 | ||
109e00db DH |
2598 | - Compilation with DLPI and -Werror has been repaired. |
2599 | ||
9a111ee8 | 2600 | - Error in decoding IA_NA option if multiple interfaces are present |
3ad9d48f SK |
2601 | fixed by Marcus Goller. |
2602 | ||
8eab95f2 DH |
2603 | - DHCPv6 server Confirm message processing has been enhanced - it no |
2604 | longer replies only to clients with host {} records, it now replies | |
2605 | as directed in RFC3315 section 18.2.2 - that is, to all clients | |
2606 | regardless of the existence of bindings. | |
2607 | ||
07b9a351 DH |
2608 | - A core dump during expired lease cleanup has been repaired. |
2609 | ||
7285af30 DH |
2610 | - DDNS updates state information are now stored in 'binding scopes' that |
2611 | follow the leases through their lifecycles. This enables DDNS teardowns | |
2612 | on leases that are assigned and expired inbetween a server restart (the | |
2613 | state is recovered from dhcpd.leases). Arbitrary user-specified binding | |
2614 | scopes ('set var = "value";') are not yet supported. | |
2615 | ||
2394b26b DH |
2616 | - Additional compilation problems on HP/UX have been repaired. |
2617 | ||
ab3a540f SK |
2618 | Changes since 4.0.0a2 |
2619 | ||
97050349 SK |
2620 | - Fix for startup where there are no IPv4 addresses on an interface. |
2621 | Thanks to Marcus Goller for reporting the bug. | |
2622 | ||
763cba6b | 2623 | - Fixed file descriptor leak on listen failure. Thanks to Tom Clark. |
e889ded1 | 2624 | |
237f8d3a | 2625 | - Bug in server configuration parser caused server to get stuck on |
9a111ee8 | 2626 | startup for certain bad pool declarations. Thanks to Guillaume |
237f8d3a SK |
2627 | Knispel for the bug report and fix. |
2628 | ||
28868515 SK |
2629 | - Code cleaned to remove warnings reported by "gcc -Wall". |
2630 | ||
d00d373a SK |
2631 | - DHCPv6 is now the default. You can disable DHCPv6 support using the |
2632 | "--disable-dhcpv6" flag when you run the configure script. | |
2633 | ||
8dfd5744 DH |
2634 | - An internal database inconsistency bug was repaired where the server |
2635 | would segfault if a client attempted to renew a lease that had been | |
2636 | loaded from persistent storage. | |
2637 | ||
45d545f0 | 2638 | - 'request' and 'also request' syntaxes have been added to accommodate |
0c20eab3 DH |
2639 | the DHCPv6 client configuration. 'send dhcp6.oro' is no longer |
2640 | necessary. | |
2641 | ||
9a111ee8 TM |
2642 | - Bug fixed where configuration file parsing did not work with |
2643 | zero-length options; this made it impossible to set the | |
f800f4f6 SK |
2644 | rapid-commit option. |
2645 | ||
845e9677 DH |
2646 | - Bogus messages about host records with IPv4 fixed-addresses being of |
2647 | non-128-bits in length were removed. | |
2648 | ||
76c944da SK |
2649 | Changes since 4.0.0a1 |
2650 | ||
71765b58 SK |
2651 | - Bug in octal parsing fixed. Thanks to Bernd Fuhrmann for the report |
2652 | and fix. | |
2653 | ||
847e7000 SK |
2654 | - Autoconf now supplies proper flags for Solaris DHCPv6 builds. |
2655 | ||
bda33169 SK |
2656 | - Fix for parsing error on some IPv6 addresses. |
2657 | ||
9b21e73e SK |
2658 | - Invalid CIDR representation for IPv6 subnets or ranges now checked |
2659 | for when loading configuration. | |
2660 | ||
8da06bb1 DH |
2661 | - Compilation on HP/UX has been repaired. The changes should generally |
2662 | apply to any architecture that supplies SIOCGLIFCONF but does not | |
2663 | use 'struct lifconf' structures to pass values. | |
2664 | ||
dd328225 DH |
2665 | - Two new operators, ~= and ~~, have been integrated to implement |
2666 | boolean matches by regular expression (such as may be used in | |
2667 | class matching statements). Thanks to a patch by Alexandr S. | |
2668 | Agranovsky, which underwent slight modification. | |
2669 | ||
76c944da SK |
2670 | - Fix for icmp packets on 64-bit systems (bug introduced in 4.0). |
2671 | ||
f796f70a DH |
2672 | - A bug was fixed in interface discovery wherein an error identifying |
2673 | a server-configured interface with no IPv4 addresses would SEGV. | |
76c944da | 2674 | |
c11f349d EH |
2675 | - Fixed a bug in which write_lease() might report a failure incorrectly |
2676 | ||
af5fa176 EH |
2677 | - Added support for DHCPv6 Release messages |
2678 | ||
2679 | - Added -x option to dhclient, which triggers dhclient processes | |
2680 | to exit gracefully without releasing leases first | |
2681 | ||
a546f2a7 EH |
2682 | - All binaries (client, server, relay) now change directories |
2683 | to / before going into daemon mode, so as not to hold $CWD open | |
2684 | ||
b55d0d5f EH |
2685 | - Fixed a bug parsing DHCPv6 client-id's in host-identifier statements |
2686 | ||
26be82af DH |
2687 | - Fixed a bug with the 'ddns-updates' boolean server configuration |
2688 | parameter, which caused the server to fail. | |
2689 | ||
98bd7ca0 DH |
2690 | Changes since 4.0.0-20070413 |
2691 | ||
d9b43370 SK |
2692 | - Old (expired) leases are now cleaned. |
2693 | ||
8c1752d2 DH |
2694 | - IPv6 subnets now have support for arbitrary allocation ranges via |
2695 | a new 'range6' configuration directive. | |
2696 | ||
98bd7ca0 DH |
2697 | - An obviated option code hash lookup to find D6O_CLIENTID was removed. |
2698 | ||
a512d11b DH |
2699 | - Corrected some situations where variables might be used without being |
2700 | initialized. | |
2701 | ||
2702 | - Silenced several other compiler warnings. | |
2703 | ||
2704 | - Include the more standard sys/uio.h rather than rely upon other | |
f66f02cc DH |
2705 | header files to include it (fixes a BSD 4.2 compile failure). |
2706 | ||
2707 | - Duplicate dhclient-script updates for DHCPv6 to all provided scripts. | |
a512d11b | 2708 | |
4ba58919 DH |
2709 | - DHCPv4 I/O methods that failed to sense hardware address were corrected. |
2710 | ||
2711 | - DHCPv4 is now the default (as documented) rather than DHCPv6. The default | |
2712 | was set to DHCPv6 to facilitate ease early development, and forgotten. | |
2713 | ||
2714 | - Corrected a segmentation violation in DHCPv4 socket processing. | |
2715 | ||
8ea19a71 | 2716 | - dhclient will now fork() into the background once it binds to an |
45d545f0 | 2717 | IPv6 address, or immediately if the -n flag is supplied. |
8ea19a71 DH |
2718 | |
2719 | - -q is now the default behaviour on dhclient, with -d or -v enabling | |
2720 | non-quiet (stderr logging) mode. | |
2721 | ||
2cf8d0bd DH |
2722 | - Fix documentation of the domain-search atom (quoted, with commas). |
2723 | ||
2724 | - Document DHCPv6 options presently in the default table. | |
2725 | ||
fe5b0fdd DH |
2726 | - Replaced ./configure shellscripting with GNU Autoconf. |
2727 | ||
98bd7ca0 DH |
2728 | Changes since 3.1.0 (NEW FEATURES) |
2729 | ||
2730 | - DHCPv6 Client and Server protocol support. Use '-6' to run the daemons | |
2731 | as v6-only. Use '-4' to run the daemons as v4-only (default. There is | |
2732 | no support currently for both. | |
2733 | ||
2734 | - Server support for multiple IA_NA options, containing at most one | |
2735 | IAADDR option. | |
2736 | ||
2737 | - Client support for one IA_NA option, containing any number of IAADDR | |
2738 | options. | |
2739 | ||
2740 | - Server support for the DHCPv6 Information-request message. | |
2741 | ||
2742 | - Inappropriate unicast DHCPv6 messages sent to the server are now | |
2743 | discarded, and this has rearchitected the IO system slightly. | |
2744 | ||
2745 | - The DHCPv6 server DUID defaults to type 1, is persistently stored in | |
2746 | the leases database, and can be over-ridden (either completely, or by | |
2747 | specifying type 1 or type 2). | |
2748 | ||
2749 | - The server only uses Rapid-Commit if it has been configured with the | |
2750 | Rapid-Commit option and the client requests it. | |
2751 | ||
2752 | - DDNS support. We now update AAAA records in the same place we would | |
2753 | update A records, if we have an IPv6 address. We also generate IP6.ARPA | |
2754 | style names for PTR records if we're dealing with an IPv6 address. Both | |
2755 | A and AAAA updates are done using the same 'fqdn.' virtual option space | |
2756 | (although the DHCPv4 FQDN and DHCPv6 FQDN options are formatted | |
2757 | differently, they both use the same code here). | |
2758 | ||
2759 | - The Linux dhclient-script attempts to set and remove assigned addresses, | |
2760 | and to configure /etc/resolv.conf from nameserver and domain name | |
2761 | configurations. It can be extended to configure other parameters. | |
2762 | ||
2763 | - Initial DHCPv6 lease support. | |
2764 | ||
2765 | - The IO system now tracks all local IP addresses, so that the DHCP | |
2766 | applications (particularly the dhcrelay) can discern between what frames | |
2767 | were transmitted to it, and what frames are being carried through it which | |
2768 | it should not intercept. | |
2769 | ||
1418fd11 DH |
2770 | Changes since 3.1.0 (Maintenance) |
2771 | ||
2772 | - A bug was repaired where MAC Address Affinity for virgin leases always | |
2773 | mapped to the primary. Virgin leases now have an interleaved preference | |
2774 | between primary and secondary. | |
2775 | ||
2776 | - A bug was repaired where MAC Address Affinity for clients with no client | |
2777 | identifier was sometimes mishashed to the peer. Load balancing during | |
2778 | runtime and pool rebalancing were opposing. | |
2779 | ||
aa3e348e DH |
2780 | - An assertion in lease counting relating to reserved leases was repaired. |
2781 | ||
e9c59645 DH |
2782 | - The subnet-mask option inclusion now conforms with RFC2132 section 3.3; |
2783 | it will only appear prior to the routers option if it is present on the | |
2784 | Parameter-Request-List. The subnet-mask option will also only be | |
2785 | included by default (if it is not on the PRL) in response to DISCOVER | |
2786 | or REQUEST messages. | |
2787 | ||
2788 | - The FQDN option is only supplied if the client supplied an FQDN option or | |
2789 | if the FQDN option was explicitly requested on the PRL. | |
2790 | ||
c104546d DH |
2791 | - Dynamic BOOTP leases are now load balanced in failover. |
2792 | ||
b9d0cc05 DH |
2793 | Changes since 3.1.0rc1 |
2794 | ||
adb95d23 | 2795 | - The parse warning that 'deny dynamic bootp;' must be configured for |
b9d0cc05 DH |
2796 | failover protected subnets was removed. |
2797 | ||
a512cc3a DH |
2798 | Changes since 3.1.0b2 |
2799 | ||
2800 | - Failover rebalance events no longer play ping pong with round errors | |
2801 | (moving leases between free and back to backup where there are an | |
2802 | odd number of leases). | |
2803 | ||
2804 | - The 'pool' log line has been split into two messages, one before the | |
2805 | rebalance run, and one after. | |
2806 | ||
2807 | - Any queued BNDACKs are transmitted before transmitting new BNDUPDs. | |
2808 | This enforces the correct sequence of events for the remote server | |
2809 | processing these messages. | |
2810 | ||
fe5b0fdd | 2811 | Changes since 3.1.0b1 |
27837f95 | 2812 | |
74dc3e0b EH |
2813 | - Fixed a bug that caused OMAPI clients to freeze when opening lease |
2814 | objects. | |
2815 | ||
1ba87b37 EH |
2816 | - A new server config option "fqdn-reply" specifies whether the server |
2817 | should send out option 81 (FQDN). Defaults to "on". If set to "off", | |
2818 | the FQDN option is not sent, even if the client requested it. This is | |
2819 | needed because some clients misbehave otherwise. Thanks to Christof Chen | |
2820 | at Allianz. | |
2821 | ||
a58da042 EH |
2822 | - Allow trace output files (-tf option) to be overwritten, rather than |
2823 | crashing dhcpd if the file already exists | |
2824 | ||
61252edf EH |
2825 | - A bug was fixed that caused dhcpd to segfault if a pool was declared |
2826 | outside the scope of a subnet in dhcpd.conf. | |
2827 | ||
27837f95 DH |
2828 | - Some uninitialized values were repaired in dhcpleasequery.c that |
2829 | caused the server to abort. | |
2830 | ||
4d2eaafb DH |
2831 | - A new server config option, 'do-reverse-updates', has been added |
2832 | which causes the server to abstain from performing updates on PTR | |
2833 | records. Thanks to a patch from Christof Chen at Allianz. | |
2834 | ||
06211b40 DH |
2835 | - A bug was repaired in subencapsulation support, where spaces separated |
2836 | by empty spaces would not get included. | |
2837 | ||
d6614ea2 DH |
2838 | - A bug in dhclient was repaired which caused it to send parameter request |
2839 | lists of 55 bytes in length no matter how long the declared PRL was. | |
2840 | ||
132d38f2 DH |
2841 | - 'dhcp.c(3953): non-null pointer' has been repaired. This fixes a flaw |
2842 | wherein the DHCPv4 server may ignore a configured server-identifier. | |
2843 | ||
fc3b9c90 DH |
2844 | - A flaw in failover startup sequences was repaired that sometimes left |
2845 | the primary DHCP server's pool rebalance schedules unscheduled. | |
2846 | ||
c9feb859 DH |
2847 | - Corrected a flaw that broke encapsulated spaces included due to presence |
2848 | on the parameter request list. | |
2849 | ||
c57db45c SK |
2850 | Changes since 3.1.0a3 |
2851 | ||
2852 | - Some spelling fixes. | |
98311e4b | 2853 | |
bd2bc2fa DH |
2854 | Changes since 3.1.0a2 |
2855 | ||
2856 | - A bug was fixed where attempting to permit leasequeries results in a | |
2857 | fatal internal error, "Unable to find server option 49". | |
2858 | ||
85edef5c DH |
2859 | - A bug was fixed in dhclient rendering the textual output form of the |
2860 | domain-search option syntax. | |
2861 | ||
bdddcb7d DH |
2862 | Changes since 3.1.0a1 |
2863 | ||
2864 | - A bug in the FQDN universe that added FQDN codes to the NWIP universe's | |
2865 | hash table was repaired. | |
2866 | ||
616d67cb DH |
2867 | - The servers now try harder to transmit pending binding updates when |
2868 | entering normal state. | |
2869 | ||
2870 | - UPDREQ/UPDREQALL handling was optimized - it no longer dequeues and | |
2871 | requeues all pending updates. This should reduce the number of spurious | |
66c8f734 DH |
2872 | 'xid mismatch' log messages. |
2873 | ||
2874 | - An option definition referencing leak was fixed, which resulted in early | |
2875 | termination of dhclient upon the renewal event. | |
616d67cb | 2876 | |
6708d944 DH |
2877 | - Some default hash table sizes were tweaked, some upwards, some downwards. |
2878 | 3.1.0a1's tables resulted in a reduction in default server memory use. | |
2879 | The new selected values provide more of a zero sum (increasing the size | |
2880 | of tables likely to be populated, decreasing the size of tables unlikely). | |
2881 | ||
45d545f0 | 2882 | - Lease structures appear in three separate hashes: by IP address, by UID, |
6708d944 DH |
2883 | and by hardware address. One type of table was used for all three, and |
2884 | improvements to IP address hashing were applied to all three (so UID and | |
2885 | hardware addresses were treated like 4-byte integers). There are now two | |
2886 | types of tables, and the uid/hw hashes use functions more appropriate | |
2887 | to their needs. | |
2888 | ||
2889 | - The max-lease-misbalance percentage no longer causes scheduled rebalance | |
2890 | runs to be skipped: it still governs the schedule, but every scheduled | |
2891 | run will attempt balance. | |
2892 | ||
a7ee93fe DH |
2893 | - A segfault bug in recursive encapsulation support has been corrected. |
2894 | ||
98311e4b DH |
2895 | Changes since 3.0 (New Features) |
2896 | ||
2897 | - A workaround for certain STSN servers that send a mangled domain-name | |
2898 | option was introduced for dhclient. The client will now accept corrupted | |
2899 | server responses, if they contain a valid DHCP_MESSAGE_TYPE (OFFER, ACK, | |
2900 | or NAK). The server will continue to not accept corrupt client packets. | |
2901 | ||
98bd7ca0 | 2902 | - Support for 'reserved' (pseudo-static) and BOOTP leases via failover |
a55ccdd0 | 2903 | was introduced. |
98311e4b DH |
2904 | |
2905 | - Support for adding, removing, and managing class and subclass statements | |
2906 | via OMAPI. | |
2907 | ||
a55ccdd0 DH |
2908 | - The failover implementation was updated to comply with revision 12 of |
2909 | the protocol draft. | |
2910 | ||
98311e4b DH |
2911 | - 'make install' now creates the initial zero-length dhcpd.leases file if |
2912 | one does not already exist on the system. | |
2913 | ||
b43c87ad | 2914 | - RFC3942 compliance, site-local option spaces start at 224 now, not 128. |
b43c87ad | 2915 | |
0b17f049 DH |
2916 | - The Load Balance Algorithm was misimplemented. The current implementation |
2917 | matches RFC 3074. | |
2918 | ||
2727c1cf DH |
2919 | - lcase() and ucase() configuration expressions have been added which adjust |
2920 | their arguments from upper to lower and lower to upper cases respectively. | |
2714a8ef | 2921 | Thanks to a patch from Albert Herranz. |
2727c1cf | 2922 | |
febbd402 DH |
2923 | - The dhclient 'reject ...;' statement, which rejects leases given by named |
2924 | server-identifiers, now permits address ranges to be specified in CIDR | |
7d7073e7 | 2925 | notation. Thanks to a patch from David Boyce. |
febbd402 | 2926 | |
ee912528 DH |
2927 | - The subnet-mask option is now supplied by default, but at lowest |
2928 | priority. This helps a small minority of clients that provide parameter | |
2929 | request lists, but do not list the subnet-mask option because they were | |
2930 | designed to interoperate with a server that behaves in this manner. | |
2931 | ||
2932 | - The FQDN option is similarly supplied even if it does not appear on the | |
2933 | parameter request list, but not to the exclusion of options that do | |
2934 | appear at the parameter request list. Up until now it had ultimate | |
2935 | priority over the client's parameter request list. | |
2936 | ||
f7fdb216 | 2937 | - Varying option space code and length bit widths (8/16/32) are now |
51202707 | 2938 | supported. This is a milestone in achieving RFC 3925 "VIVSO" and |
f7fdb216 DH |
2939 | DHCPv6 support. |
2940 | ||
5e864416 DH |
2941 | - A new common (server or client) option, 'db-time-format local;', has |
2942 | been added which prints the local time in /var/db/dhcpd.leases rather | |
2943 | than UTC. Thanks to a patch from Ken Lalonde. | |
2944 | ||
b500bd4c DH |
2945 | - Some patches to improve DHCP Server startup speed from Andrew Matheson |
2946 | have been incorporated. | |
2947 | ||
2426234f DH |
2948 | - Failover pairs now implement 'MAC Affinity' on leases moving from the |
2949 | active to free states. Leases that belonged to the failover secondary | |
2950 | are moved to BACKUP state rather than FREE upon exiting EXPIRED state. | |
2951 | If lease rebalancing must move leases, it tries first to move leases | |
2952 | that belong to the peer in need. | |
2953 | ||
2954 | - The server no longer sends POOLREQ messages unless the pool is severely | |
2955 | misbalanced in the peer's favor (see 'man dhcpd.conf' for more details). | |
2956 | ||
2957 | - Pool rebalance events no longer happen upon successfully allocating a | |
2958 | lease. Instead, they happen on a schedule. See 'man dhcpd.conf' for the | |
2959 | min-balance and max-balance statements for more information. | |
2960 | ||
334bf491 DH |
2961 | - The DHCP Relay Agent Information Option / Link Selection Sub-Option |
2962 | is now supported. (See RFC3527 for details). | |
2963 | ||
3004bebf DH |
2964 | - A new DDNS related server option, update-conflict-detection, has been |
2965 | added. If this option is enabled, dhcpd will perform normal DHCID | |
2966 | conflict resolution (the default). If this option is disabled, it will | |
2967 | instead trust the assigned name implicitly (removing any other bindings | |
2968 | on that name). This option has not been made available in dhclient. | |
2969 | ||
567e8561 DH |
2970 | - In those cases where the DHCP software manufactures an IP header (to |
2971 | transmit via bpf, lpf, etc), the IP TTL the software selects has been | |
2972 | increased from 16 to 128. This is intended to match Microsoft Windows | |
2973 | DHCP Client behaviour, to increase compatibility. | |
2974 | ||
a396d25f DH |
2975 | - 'ignore client-updates;' now has behaviour that is different from |
2976 | 'deny client-updates;'. The client's request is not truly ignored, | |
2977 | rather it is encouraged. Should this value be configured, the server | |
2978 | updates DNS as though client-updates were set to 'deny'. That is, it | |
2979 | enters into DNS whatever it is configured to do already, provided it is | |
2980 | configured to. Then it sends a response to the client that lets the | |
2981 | client believe it is performing client updates (which it will), probably | |
2982 | for a different name. In essence, this lets the client do as it will, | |
2983 | ignoring this aspect of their request. | |
2984 | ||
dba5803b DH |
2985 | - Support for compressed 'domain name list' style DHCP option contents, and |
2986 | in particular the domain search option (#119) was added. | |
2987 | ||
41e45067 | 2988 | - The DHCP LEASEQUERY protocol as defined in RFC4388 is now implemented. |
6d103865 SK |
2989 | LEASEQUERY lets you query the DHCP server for information about a lease, |
2990 | using either an IP address, MAC address, or client identifier. Thanks | |
2991 | to a patch from Justin Haddad. | |
2992 | ||
41e45067 DH |
2993 | - DHCPD is now RFC2131 section 4.1 compliant (broadcast to all-ones ip and |
2994 | ethernet mac address) on the SCO platform specifically without any strange | |
2995 | ifconfig hacks. Many thanks go to the Kroger Co. for donating the | |
2996 | hardware and funding the development. | |
6d103865 | 2997 | |
b543fea9 DH |
2998 | - A new common configuration executable statement, execute(), has been |
2999 | added. This permits dhcpd or dhclient to execute a named external | |
3000 | program with command line arguments specified from other configuration | |
3001 | language. Thanks to a patch written by Mattias Ronnblom, gotten to us | |
3002 | via Robin Breathe. | |
3003 | ||
b22de500 DH |
3004 | - A new dhcp server option 'adaptive-lease-time-threshold' has been added |
3005 | which causes the server to substantially reduce lease-times if there are | |
3006 | few (configured percentage) remaining leases. Thanks to a patch submitted | |
3007 | from Christof Chen. | |
3008 | ||
96bbe8c5 SK |
3009 | - Encapsulated option spaces within encapsulated option spaces is now |
3010 | formally supported. | |
3011 | ||
b8221d95 DH |
3012 | Changes since 3.0.6rc1 |
3013 | ||
3014 | - supersede_lease() now requeues leases in their respective hardware | |
3015 | address hash bucket. This mirrors client identifier behaviour. | |
3016 | ||
c1e6c832 DH |
3017 | Changes since 3.0.5 |
3018 | ||
f546c28b DH |
3019 | - Assorted fixes for broken network devices: Packet length is now |
3020 | determined from the IP header length field to finally calculate the | |
3021 | UDP payload length, because some NIC drivers return more data than | |
5a22eb63 | 3022 | they actually received. |
f546c28b DH |
3023 | |
3024 | - UDP packets are now stored in aligned data structures. | |
3025 | ||
c1e6c832 DH |
3026 | - A logic error in omapi interface code was repaired that might result in |
3027 | incorrectly indicating 'up' state when any flags were set, rather than | |
23e10d37 DH |
3028 | specifically the INTERFACE_REQUESTED flag. Thanks to a patch from |
3029 | Jochen Voss which got to us via Andrew Pollock at Debian. | |
c1e6c832 | 3030 | |
75ab3070 DH |
3031 | - A reference leak on binding scopes set by ddns updates was repaired. |
3032 | ||
d69fb6a8 | 3033 | - A memory leak in the minires_nsendsigned() function call was repaired. |
23e10d37 | 3034 | Effectively, this leaked ~176 bytes per DDNS update. |
d69fb6a8 | 3035 | |
02428754 DH |
3036 | - In the case where an "L2" DHCP Relay Agent (one that does not set giaddr) |
3037 | was directly attached to the same broadcast domain as the DHCP server, | |
3038 | the RFC3046 relay agent information option was not being returned to the | |
3039 | relay in the server's replies. This was fixed; the dhcp server no longer | |
3040 | requires the giaddr to reply with relay agent information. Note that | |
3041 | this also improves compatibility with L2 devices that "intercept" DHCP | |
3042 | packets and expect relay agent information even in unicast (renewal) | |
23e10d37 DH |
3043 | replies. Thanks to a patch from Pekka Silvonen. |
3044 | ||
3045 | - A bug was fixed where the BOOTP header 'sname' field had a value, the | |
3046 | copy written to persistent storage was actually the contents of the | |
3047 | 'file' field. | |
02428754 | 3048 | |
ecde99a3 DH |
3049 | - A bug was fixed where the nwip virtual option space was referencing |
3050 | the fqdn option's virtual option space's option cache. | |
3051 | ||
67674ffb DH |
3052 | - Timestamp parsing errors that indicated missing "minutes" fields rather |
3053 | than the actually missing "seconds" fields have been repaired thanks to | |
3054 | a patch from Kevin Steves. | |
3055 | ||
830ebc4c DH |
3056 | - A grammar error in the dhclient.8 manpage was repaired thanks to a patch |
3057 | from Chris Wagner. | |
3058 | ||
c759db75 DH |
3059 | - Several spelling typos were repaired, and some cross-references to other |
3060 | relevant documents were included in the manpages, thanks to a patch | |
3061 | by Andrew Pollock which got to us via Tomas Pospisek. | |
3062 | ||
9aa3f3a5 DH |
3063 | - Some bugs were fixed in the 'emergency relay agent options hologram' |
3064 | which is used to retain relay agent option contents from when the | |
3065 | client was in INIT or REBIND states. This should solve problems where | |
3066 | relay agent options were not echoed from the server, even when giaddr | |
3067 | was set. | |
3068 | ||
3d0c598a DH |
3069 | - dhclient now closes its descriptor to dhclient.leases prior to executing |
3070 | dhclient-script. Thanks to a patch from Tomas Pospisek. | |
3071 | ||
d5b6835f DH |
3072 | - The server's "by client-id" and "by hardware address" hash table lists |
3073 | are now sorted according to the preference to re-allocate that lease to | |
3074 | returning clients. This should eliminate pool starvation problems | |
3075 | arising when "INIT" clients were given new leases rather than presently | |
3076 | active ones. | |
3077 | ||
02428754 | 3078 | Changes since 3.0.5rc1 |
0a73b7b6 | 3079 | |
901306d5 | 3080 | - A bug was repaired in fixes to the dhclient, which sought to run the |
0a73b7b6 SK |
3081 | dhclient-script with the 'EXPIRE' state should it receive a NAK in |
3082 | response to a REQUEST. The client now iterates the PREINIT state | |
3083 | after the EXPIRE state, so that interfaces that might be configured | |
3084 | 'down' can be brought back 'up' and initialized. | |
3085 | ||
87a08ccc DH |
3086 | - DHCPINFORM handling for clients that properly set ciaddr and come to the |
3087 | server via a relay aget has been repaired. | |
3088 | ||
6da113fb DH |
3089 | Changes since 3.0.4 |
3090 | ||
3091 | - A warning that host statements declared within subnet or shared-network | |
3092 | scopes are actually global has been added. | |
3093 | ||
3094 | - The default minimum lease time (if min-lease-time was not specified) | |
3095 | was raised from 0 to 300. 0 is not thought to be sensible, and is | |
3096 | known to be damaging. | |
3097 | ||
3098 | - Added additional fatal error sanity checks surrounding lease binding | |
3099 | state count calculations (free/active counts used for failover pool | |
3100 | balancing). | |
3101 | ||
dcc557db DH |
3102 | - Some time value size fixes in 3.0.4 brought on from FreeBSD /usr/ports were |
3103 | misapplied to server values rather than client values. The server no longer | |
3104 | advertises 8-byte lease-time options when on 64-bit platforms. | |
3105 | ||
1b2ab55f DH |
3106 | - A bug where leases not in ACTIVE state would get billed to billed classes |
3107 | (classes with lease limitations) was fixed. Non-active leases OFFERed | |
3108 | to clients are no longer billed (but billing is checked before offering). | |
3109 | ||
e48891e8 DH |
3110 | - The dhcpd.conf.5 manpage was updated in regard to the ddns-domainname |
3111 | configuration option - the default configuration and results should be | |
3112 | more clear now. | |
3113 | ||
6cbc6629 DH |
3114 | - If the dhclient were to receive a DHCPNAK while it was in the RENEW |
3115 | state (and consequently, had an active, 'bound' address and related | |
3116 | configuration options), it would fail to 'tear down' this information | |
3117 | before proceeding into INIT state. dhclient now iterates the dhclient- | |
3118 | script with the 'EXPIRE' action to cause these teardowns prior to entering | |
1d3bfb17 | 3119 | INIT state. Thanks to a patch from Chris Zimmerman. |
6cbc6629 | 3120 | |
c5fec5fa DH |
3121 | - The omapi.1 manpage had some formatting errors repaired thanks to a patch |
3122 | from Yoshihiko Sarumaru. | |
3123 | ||
33e1cb2b DH |
3124 | - A few lines of code that were failover-specific were moved within |
3125 | #if defined() clauses so that compilation without failover could be | |
3126 | made possible. | |
3127 | ||
2bddf829 DH |
3128 | - The log message emitted when the 'leased-address' value was not available |
3129 | in dhcpd.conf "executable statements" has been updated to be more helpful. | |
3130 | Manpage information for this value has also been updated. | |
3131 | ||
87578987 DH |
3132 | - Abandoned or dissociated (err condition) leases now remove any related |
3133 | dynamic dns bindings. Thanks to a patch from Patrick Schoo. | |
3134 | ||
e77c575f DH |
3135 | - Attempting to write a new lease file to replace a corrupt (due to |
3136 | encountering non-retryable errors during writing) lease file should | |
3137 | no longer result in an infinite recursion. | |
3138 | ||
2178df03 DH |
3139 | - Host declaration hardware addresses and client identifiers may only be |
3140 | configured once. dhcpd will now fail to load config files that specify | |
3141 | multiple identifiers (previous versions would silently over-ride the | |
3142 | value with the later configured value). | |
3143 | ||
d5341d9b SK |
3144 | - Several option codes that have been allocated since our last release |
3145 | have been named and documented. | |
3146 | ||
3147 | - Option names of the form "unknown-123" have been removed from the in- | |
3148 | memory hash tables. In order to support options of these names that | |
3149 | may appear in dhclient.leases or similar in previous versions, the | |
3150 | parser will now find the new option code definition, or mock up a | |
3151 | generic option code definition. This should result in a smooth | |
3152 | transition from one name to the other, as the new name is used to | |
3153 | write new output. | |
3154 | ||
6da113fb DH |
3155 | Changes since 3.0.4rc1 |
3156 | ||
3157 | - The dhcp-options.5 manpage was updated to correct indentation errors | |
3158 | thanks to a patch from Jean Delvare. | |
3159 | ||
3160 | Changes since 3.0.4b3 | |
3161 | ||
3162 | - Some manual pages were clarified pursuant to discussion on the dhcp-server | |
3163 | mailing list. | |
3164 | ||
88cd8aca DH |
3165 | Changes since 3.0.4b2 |
3166 | ||
45d545f0 | 3167 | - Null-termination sensing for certain clients that unfortunately require |
88cd8aca DH |
3168 | it in DHCPINFORM processing was repaired. |
3169 | ||
3170 | - The host-name option and a few others were moved from "X" format to "t" | |
3171 | format to be compatible with new NULL handling functions. | |
3172 | ||
3173 | - DHCPINFORM processing is a little more careful about return addressing | |
3174 | its responses, or if responding via a relay. The INFORM related | |
3175 | messages also log the 'effective client ip address' rather than the | |
3176 | client's supplied ciaddr (since some clients produce null ciaddrs). | |
3177 | ||
3178 | - The server was inappropriately sending leases to the RESET state in the | |
3179 | event that multiple active leases were found to match a singly-identified | |
3180 | client. This was changed to RELEASED (by accepting a different, ACTIVE | |
3181 | binding, the client is implicitly releasing its lease). This repairs a | |
3182 | bug wherein secondary servers in failover pairs detecting this condition | |
3183 | move leases to RESET, and primaries refuse to accept that state | |
3184 | transition (properly). | |
3185 | ||
3186 | - The memset-after-dmalloc() changes made in 3.0.4b1 have been backed out. | |
3187 | ||
3188 | Changes since 3.0.4b1 | |
3189 | ||
3190 | - Command line parsing in omshell was repaired - it no longer closes | |
3191 | STDIN after reading one line. | |
3192 | ||
3193 | - The resolver library no longer closes the /etc/resolv.conf file | |
3194 | descriptor it opened twice. | |
3195 | ||
3196 | - Changes to trailing NULL removal in 't' option-atoms has been rethought, | |
3197 | it now includes 'd' (domain name) types, and tries hard not to rewind an | |
3198 | option beyond the start of the text field it is un-terminating. | |
3199 | ||
3200 | Changes since 3.0.3 | |
3201 | ||
3202 | - A DDNS update handling function was misusing the DNS error codes, rather | |
3203 | than the internal generic result enumeration. The result is a confusing | |
3204 | syslog line, logging the wrong condition. | |
3205 | ||
3206 | - The DHCP Server was not checking pool balance in the case where it brought | |
3207 | a non-ACTIVE lease out of storage for a client that was returning to use | |
3208 | a lease it once had long ago, and had since expired. | |
3209 | ||
3210 | - Failover peers no longer bother to look for free leases to allocate when | |
3211 | they already found the client's ACTIVE lease. DISCOVERs are load balanced | |
98bd7ca0 | 3212 | whether freely-allocated or not, unless the server doubts the peer has |
88cd8aca DH |
3213 | leases to allocate. |
3214 | ||
3215 | - Fixed a bug in dhcrelay agent addition code that suppressed trailing | |
45d545f0 | 3216 | PAD options - it was suppressing only one trailing PAD option, rather |
88cd8aca DH |
3217 | than the entire block of them. |
3218 | ||
3a16098f DH |
3219 | ! Fixed some unlikely overlapping-region memcpy() bugs in dhcrelay agent |
3220 | option addition and stripping code. Added a few sanity checks. Although | |
3221 | highly improbable, due to requiring the reception of a DHCP datagram well | |
3222 | in excess of all known to be used physical MTU limitations, it is possible | |
3223 | this may have been used in a stack overflow security vulnerability. Thanks | |
3224 | to a patch from infamous42md. | |
3225 | ||
3226 | ! Added some sanity checks to OMAPI connection/authentication code. | |
3227 | Although highly improbable, due to having to deliver in excess of 2^32 | |
3228 | bytes of data via the OMAPI channel, not to mention requiring dhcpd to | |
3229 | be able to malloc() a memory region 2^32 bytes in size, it was possible | |
3230 | this might have resulted in a heap overflow security vulnerability. | |
3231 | Thanks to a patch from infamous42md. | |
88cd8aca DH |
3232 | |
3233 | - dmalloc() memset()'s the non-debug (data) portion of the allocated | |
3234 | memory to zero. Code that memset()'s the result returned by dmalloc() to | |
3235 | zero is redundant. These redundancies were removed. | |
3236 | ||
3237 | - Some type declaration corrections to u_int16_t were made in common/tr.c | |
4b97eaff | 3238 | (Token Ring support) thanks to a patch from Jason Vas Dias at Red Hat. |
88cd8aca DH |
3239 | |
3240 | - A failover bug that was allowing leases that EXPIRED or were RELEASED | |
3241 | where tsfp and tstp are identical timestamps to languish in these | |
3242 | transitional states has been repaired. As a side effect, lease | |
3243 | databases should be kept more consistent overall, not just for these | |
3244 | transitional states. | |
3245 | ||
3246 | - If the lease db is deleted out from under the daemon, and it moves to rewrite | |
3247 | the db, it will go ahead with the operation and move the new db into place | |
3248 | once it detects the old db does not exist. | |
3249 | ||
3250 | - dhclient now ignores IRDA, SIT, and IEEE1394 network interfaces, as it | |
3251 | is either nonsensical or (in the case of IEEE1394) is not known to support | |
3252 | these interfaces. Thanks to Marius Gedminas and Andrew Pollock of Debian. | |
3253 | ||
3254 | - Some previously undocumented reasons for dhclient-script invoking has | |
45d545f0 | 3255 | been documented in the dhclient-script.8 manpage. |
88cd8aca DH |
3256 | |
3257 | - Failover potential expiry calculations (TSTP) have been corrected. Results | |
3258 | should be substantially more consistent, and proper given the constraints. | |
3259 | ||
3260 | - Adjusted lease state validation checks in potential-conflict, to | |
3261 | account for possible clock skew similarly to normal state, and several | |
3262 | previously illegal transitions were made legal (ex: active->released). | |
3263 | ||
3264 | - An impossible sanity check was removed from omapi/buffer.c, thanks to a | |
3265 | patch from 'infamous42md'. | |
3266 | ||
3267 | - An OMAPI host/network byte order problem in lease time values has been | |
3268 | repaired. | |
3269 | ||
3270 | - Several minor bugs, largely relating to treating 8-byte time values as | |
3271 | 4-byte entities, have been repaired after careful review of the FreeBSD | |
3272 | ports collection's patch set. Thanks to the nameless entities who have | |
3273 | contributed to the FreeBSD ports. | |
3274 | ||
3275 | - When writing a trace file, the file is now created with permissions 0600, | |
3276 | to help administrators avoid accidentally publicising sensitive config | |
3277 | data. | |
3278 | ||
3279 | - The calculation of the maximum size of DHCP packets no longer includes | |
3280 | Ethernet framing overhead. The result is that the 'Maximum Message | |
3281 | Size' option advertised by clients, or the default value 576, is no | |
3282 | longer reduced by 14 bytes, and instead directly reflects the IP level | |
3283 | MTU (and the default, minimum allowed IP MTU of 576). | |
3284 | ||
3285 | - The special status of RELEASED/EXPIRED/RESET leases when a server | |
3286 | is operating in partner-down was fixed. It no longer requires a | |
3287 | lease be twice the MCLT beyond STOS to 'reallocate', and the expiry | |
3288 | event to turn these into FREE leases without peer acknowledgement | |
3289 | (after STOS+MCLT) has been repaired. | |
3290 | ||
3291 | - Compilation on older Solaris systems (lacking /usr/include/sys/int_types.h) | |
3292 | has been repaired. | |
3293 | ||
3294 | - "append"ing a string onto the end of a "t" type option (such as the | |
3295 | domain-name field) that had been improperly NULL-terminated by the | |
3296 | DHCP server will no longer result in a truncated string containing | |
3297 | only the option from the server, and not the expected appended value. | |
4b97eaff | 3298 | Thanks to a patch from Jason Vas Dias at Red Hat. |
88cd8aca DH |
3299 | |
3300 | - File handlers on configuration state (config files and lease dbs) should | |
98bd7ca0 | 3301 | be treated consistently, regardless of whether TRACING is defined or not. |
88cd8aca | 3302 | |
45d545f0 | 3303 | - The Linux build environment has had some minor improvements - better |
88cd8aca DH |
3304 | sensing of 64-bit pointer sizes (only used for establishing an icmp_id), |
3305 | and corrections to #if operators regarding LINUX_MAJOR should it ever | |
3306 | move to 3.[01].x. | |
3307 | ||
3308 | - The server now tries harder to survive the condition where it is unable | |
3309 | to open a new lease file to rewrite the lease state database. | |
3310 | ||
c75473d8 DH |
3311 | Changes since 3.0.3b3 |
3312 | ||
3313 | - dhclient.conf documentation for interface {} was updated to reflect recent | |
3314 | discussion on the dhcp-hackers mailing list. | |
3315 | ||
3316 | - In response to reports that the software does not compile on GCC 4.0.0, | |
3317 | -Werror was removed from Makefile.conf for all platforms that used it. | |
3318 | We will address the true problem in a future release; this is a temporary | |
3319 | workaround. | |
3320 | ||
3321 | Changes since 3.0.3b2 | |
3322 | ||
3323 | - An error in code changes introduced in 3.0.3b2 was corrected, which caused | |
3324 | static BOOTP clients to receive random addresses. | |
3325 | ||
3326 | Changes since 3.0.3b1 | |
3327 | ||
3328 | - A bug was fixed in BOOTPREQUEST handling code wherein stale references to | |
3329 | host records would be left behind on leases that were not allocated to the | |
3330 | client currently booting (eg in the case where the host was denied booting). | |
3331 | ||
3332 | - The dhcpd.conf.5 manpage was updated to be more clear in regards to | |
3333 | multiple host declarations (thanks to Vincent McIntyre). 'Interim' style | |
3334 | dynamic updates were also retouched. | |
3335 | ||
98311e4b DH |
3336 | Changes since 3.0.2 |
3337 | ||
3338 | - A bug was fixed where a server might load balance a DHCP REQUEST to its | |
45d545f0 | 3339 | peer after already choosing not to load balance the preceding DISCOVER. |
98311e4b DH |
3340 | The peer cannot allocate the originating server's lease. |
3341 | ||
3342 | - In the case where a secondary server lost its stable storage while the | |
3343 | primary was still in communications-interrupted, and came back online, | |
3344 | the lease databases would not be fully transferred to the secondary. | |
3345 | This was due to the secondary errantly sending an extra UPDREQ message | |
3346 | when the primary made its state transition to PARTNER-DOWN known. | |
3347 | ||
3348 | - The package will now compile cleanly in gcc 3.3 and 3.4. As a side effect, | |
3349 | lease structures will be 9 bytes smaller on all platforms. Thanks to | |
4b97eaff | 3350 | Jason Vas Dias at Red Hat. |
98311e4b DH |
3351 | |
3352 | - Interface discovery code in DISCOVER_UNCONFIGURED mode is now | |
3353 | properly restricted to only detecting broadcast interfaces. Thanks | |
4b97eaff | 3354 | to a patch from Jason Vas Dias at Red Hat. |
98311e4b DH |
3355 | |
3356 | - decode_udp_ip_header was changed so that the IP address was copied out | |
3357 | to a variable, rather than referenced by a pointer. This enforces 4-byte | |
3358 | alignment of the 32-bit IP address value. Thanks to a patch from Dr. | |
3359 | Peter Poeml. | |
3360 | ||
3361 | - An incorrect log message was corrected thanks to a patch from | |
3362 | Dr. Peter Poeml. | |
3363 | ||
3364 | - A bug in DDNS was repaired, where if the server's first DDNS action was | |
3365 | a DDNS removal rather than a DDNS update, the resolver library's | |
3366 | retransmit timer and retry timer was set to the default, implying a | |
3367 | 15 second timeout interval. Which is a little excessive in a synchronous, | |
3368 | single-threaded system. In all cases, ISC DHCP should now hold fast to | |
3369 | a 1-second timeout, trying only once. | |
3370 | ||
3371 | - The siaddr field was being improperly set to the server-identifier when | |
3372 | responding to DHCP messages. RFC2131 clarified the siaddr field as | |
3373 | meaning the 'next server in the bootstrap process', eg a tftp server. | |
3374 | The siaddr field is now left zeroed unless next-server is configured. | |
3375 | ||
3376 | - mockup_lease() could have returned in an error condition (or in the | |
3377 | condition where no fixed-address was found matching the shared | |
3378 | network) with stale references to a host record. This is probably not | |
3379 | a memory leak since host records generally never die anyway. | |
3380 | ||
3381 | - A bug was repaired where failover servers would let stale client identifiers | |
3382 | persist on leases that were reallocated to new clients not sending an id. | |
3383 | ||
3384 | - Binding scopes ("set var = value;") are now removed from leases allocated | |
3385 | by failover peers if the lease had expired. This should help reduce the | |
3386 | number of stale binding scopes on leases. | |
3387 | ||
3388 | - A small memory leak was closed involving client identifiers larger than | |
3389 | 7 bytes, and failover. | |
3390 | ||
3391 | - Configuring a subnet in dhcpd.conf with a subnet mask of 32 bits might | |
3392 | cause an internal function to overflow heap. Thanks to Jason Vas Dias | |
4b97eaff | 3393 | at Red Hat. |
98311e4b DH |
3394 | |
3395 | - Some inconsistencies in treating numbers that the lexer parsed as 'NUMBER' | |
3396 | or 'NUMBER_OR_NAME' was repaired. Hexadecimal parsing is affected, and | |
3397 | should work better. | |
3398 | ||
3399 | - In several cases, parse warnings were being issued before the lexical | |
3400 | token had been advanced to the token whose value was causing an error... | |
3401 | causing parse warnings to claim the problem is on the wrong token. | |
3402 | ||
3403 | - Host declarations matching on client identifier for dynamic leases will | |
3404 | no longer match fixed-address host declarations (this is now identical | |
3405 | to behaviour for host records matching on hardware address). | |
3406 | ||
3407 | Changes since 3.0.2rc3 | |
3408 | ||
3409 | - A previously undocumented configuration directive, 'local-address', | |
3410 | was documented in the dhcpd.conf manpage. | |
3411 | ||
3412 | Changes since 3.0.2rc2 | |
3413 | ||
45d545f0 | 3414 | - Two variables introduced in 3.0.2b1 were used without being initialized |
98311e4b DH |
3415 | in the case where neither the FILE nor SNAME fields were available for |
3416 | overloading. This was repaired. | |
3417 | ||
3418 | - A heretofore believed to be impossible corner case of the option | |
3419 | overloading implementation turned out to be possible ("Unable to sort | |
3420 | overloaded options after 10 tries."). The implementation was reworked | |
3421 | to consider the case of an option so large it would require more than | |
3422 | three chunks to fit. | |
3423 | ||
3424 | - Many other instances of variables being used without being initialized | |
3425 | were repaired. | |
3426 | ||
3427 | - An uninitialized variable in omapi_io_destroy() led to the discovery | |
3428 | that this function may result in orphaned pointers (and hence, a memory | |
3429 | leak). | |
3430 | ||
3431 | Changes since 3.0.2rc1 | |
3432 | ||
3433 | - allocate_lease() was rewritten to repair a bug in which the server would | |
3434 | try to allocate an ABANDONED lease when FREE leases were available. | |
3435 | ||
3436 | Changes since 3.0.2b1 | |
3437 | ||
3438 | - Some dhcp-eval.5 manpage formatting was repaired. | |
3439 | ||
3440 | Changes since 3.0.1 | |
3441 | ||
3442 | - A bug was fixed in the server's 'option overloading' implementation, | |
3443 | where options loaded into the 'file' and 'sname' packet fields were | |
3444 | not aligned precisely as rfc2131 dictates. | |
3445 | ||
3446 | - The FreeBSD client script was changed to support the case where a domain | |
3447 | name was not provided by the server. | |
3448 | ||
3449 | - A memory leak in 'omshell' per each command line parsed was | |
3450 | repaired, thanks to a patch from Jarkko Torppa. | |
3451 | ||
3452 | - Log functions writing to stderr were adjusted to use the STDERR_FILENO | |
3453 | system definition rather than '2'. This is a no-op for 90% of platforms. | |
3454 | ||
3455 | - One call to trace_write_packet_iov() counted the number of io vectors | |
3456 | incorrectly, causing inconsistent tracefiles. This was fixed. | |
3457 | ||
3458 | - Some expression parse failure memory leaks were closed. | |
3459 | ||
3460 | - A host byte order problem in tracefiles was repaired. | |
3461 | ||
3462 | - Pools configured in DHCPD for failover possessing permission lists that | |
adb95d23 | 3463 | previously were assumed to not include dynamic bootp clients are now |
98311e4b DH |
3464 | a little more pessimistic. The result is, dhcpd will nag you about just |
3465 | about most pools that possess a 'allow' statement with no 'deny' that | |
3466 | would definitely match a dynamic bootp client. | |
3467 | ||
3468 | - The 'ddns-update-style' configuration warning bit now insists that | |
3469 | the configuration be globally scoped. | |
3470 | ||
3471 | - Two memory leaks in dhclient were closed thanks to a patch from Felix | |
3472 | Farkas. | |
3473 | ||
3474 | - Some minor but excellently pedantic documentation errors were fixed | |
3475 | thanks to a patch from Thomas Klausner. | |
3476 | ||
3477 | - Bugs in operator precedence in executable statements have been repaired | |
3478 | once again. More legal syntaxes should be parsed legally. | |
3479 | ||
3480 | - Failing to initialize a tracefile for any reason if a tracefile was | |
3481 | specified is now a fatal error. Thanks to a patch from Albert Herranz. | |
3482 | ||
3483 | - Corrected a bug in which the number of leases transferred as calculated | |
3484 | by the failover primary and sent to peers in POOLRESP responses may be | |
3485 | incorrect. This value is not believed to be used by other failover | |
3486 | implementations, excepting perhaps as logged information. | |
3487 | ||
3488 | - Corrected a bug in which 'dhcp_failover_send_poolresp()' was in fact | |
3489 | sending POOLREQ messages instead of POOLRESP mesasges. This message | |
3490 | was essentially ignored since failover secondaries effectively do not | |
3491 | respond to POOLREQ messages. | |
3492 | ||
3493 | - Type definitions for various bitwidths of integers in the sunos5-5 | |
3494 | build of ISC DHCP have been fixed. It should compile and run more | |
3495 | easily when built in 64-bit for this platform. | |
3496 | ||
3497 | - "allow known-clients;" is now a legal syntax, to avoid confusion. | |
3498 | ||
3499 | - If one dhcp server chooses to 'load balance' a request to its failover | |
3500 | peer, it first checks to see if it believes said peer has a free | |
3501 | lease to allocate before ignoring the DISCOVER. | |
3502 | ||
3503 | - log() was logging a work buffer, rather than the value returned by | |
3504 | executing the statements configured by the user. In some cases, | |
3505 | the work buffer and the intended results were the same. In some other | |
3506 | cases, they were not. This was fixed thanks to a patch from Gunnar | |
3507 | Fjone and directconnect.no. | |
3508 | ||
3509 | - Compiler warnings for some string type conversions was fixed, thanks | |
3510 | to Andreas Gustafsson. | |
3511 | ||
3512 | - The netbsd build environments were simplified to one, in which | |
3513 | -Wconversion is not used, thanks to Andreas Gustafsson. | |
3514 | ||
3515 | - How randomness in the backoff-cutoff dhclient configuration variable | |
3516 | is implemented was better documented in the manpage, and the behaviour | |
3517 | of dhclient in REQUEST timeout handling was changed to match that of | |
3518 | DISCOVER timeout handling. | |
3519 | ||
3520 | - Omapi was hardened against clients that pass in null values, thanks | |
3521 | to a patch from Mark Jason Dominus. | |
3522 | ||
3523 | - A bug was fixed in dhclient that kept it from doing client-side | |
3524 | ddns updates. Thanks to a patch from Andreas Gustafsson, which | |
3525 | underwent some modification after review by Jason Vas Dias. | |
3526 | ||
3527 | - Failover implementations disconnected due to the network between | |
3528 | them (rather than one of the two shutting down) will now try to | |
3529 | re-establish the failover connection every 5 seconds, rather than | |
3530 | to simply try once and give up until one of them is restarted. | |
3531 | Thanks to a patch from Ulf Ekberg from Infoblox, and field testing | |
3532 | by Greger V. Teigre which led to an enhancement to it. | |
3533 | ||
3534 | - A problem that kept DHCP Failover secondaries from tearing down | |
3535 | ddns records was repaired. Thanks to a patch from Ulf Ekberg from | |
3536 | Infoblox. | |
3537 | ||
3538 | - 64bit pointer sizes are detected properly on FreeBSD now. | |
3539 | ||
3540 | - A bug was repaired where the DHCP server would leave stale references | |
3541 | to host records on leases it once thought about offering to certain | |
3542 | clients. The result would be to apply host and 'known' scopes to the | |
3543 | wrong clients (possibly denying booting). NOTE: The 'mis-host' patch | |
3544 | that was being circulated as a workaround is not the way this bug was | |
3545 | fixed. If you were a victim of this bug in 3.0.1, you are cautioned | |
3546 | to proceed carefully and see if it fixes your problem. | |
3547 | ||
3548 | - A bug was repaired in the server's DHCPINFORM handling, where it | |
3549 | tried to divine the client's address from the source packet and | |
3550 | would get it wrong. Thanks to Anshuman Singh Rawat. | |
3551 | ||
3552 | - A log message was introduced to help illuminate the case where the | |
3553 | server was unable to find a lease to assign to any BOOTP client. | |
3554 | Thanks to Daniel Baker. | |
3555 | ||
3556 | - A minor dhcpd.conf.5 manpage error was fixed. | |
3557 | ||
3558 | Changes since 3.0.1rc14 | |
3559 | ||
3560 | - The global variable 'cur_time' was centralized and is now uniformly of a | |
3561 | type #defined in system-dependent headers. It had previously been defined | |
3562 | in one of many places as a 32-bit value, and this causes mayhem on 64-bit | |
3563 | big endian systems. It probably wasn't too healthy on little endian | |
3564 | systems either. | |
3565 | ||
3566 | - A printf format string error introduced in rc14 was repaired. | |
3567 | ||
3568 | - AIX system-dependent header file was altered to only define NO_SNPRINTF | |
3569 | if the condition used to #ifdef in vsnprintf in AIX' header files | |
3570 | is false. | |
3571 | ||
3572 | - The Alpha/OSF system-dependent header file was altered to define | |
3573 | NO_SNPRINTF on OS revisions older than 4.0G. | |
3574 | ||
3575 | - omapip/test.c had string.h added to its includes. | |
3576 | ||
3577 | Changes since 3.0.1rc13 | |
3578 | ||
3579 | ! CAN-2004-0460 - CERT VU#317350: Five stack overflow exploits were closed | |
3580 | in logging messages with excessively long hostnames provided by the | |
3581 | clients. It is highly probable that these could have been used by | |
3582 | attackers to gain arbitrary root access on systems using ISC DHCP 3.0.1 | |
3583 | release candidates 12 or 13. Special thanks to Gregory Duchemin for | |
3584 | both finding and solving the problem. | |
3585 | ||
3586 | ! CAN-2004-0461 - CERT VU#654390: Once the above was closed, an opening | |
45d545f0 | 3587 | in log_*() functions was evidenced, on some specific platforms where |
98311e4b DH |
3588 | vsnprintf() was not believed to be available and calls were wrapped to |
3589 | sprintf() instead. Again, credit goes to Gregory Duchemin for finding | |
3590 | the problem. Calls to snprintf() are now linked to a distribution-local | |
3591 | snprintf implementation, only in those cases where the architecture is | |
3592 | not known to provide one (see includes/cf/[arch].h). If you experience | |
3593 | linking problems with snprintf/vsnprintf or 'isc_print_' functions, this | |
3594 | is where to look. This vulnerability did not exist in any previously | |
3595 | published version of ISC DHCP. | |
3596 | ||
3597 | - Compilation on hpux 11.11 was repaired. | |
3598 | ||
3599 | - 'The cross-compile bug fix' was backed out. | |
3600 | ||
3601 | Changes since 3.0.1rc12 | |
3602 | ||
3603 | - Fixed a bug in omapi lease lookup function, to form the hardware | |
3604 | address for the hash lookup correctly, thanks to a patch from | |
3605 | Richard Hirst. | |
3606 | ||
3607 | - Fixed a bug where dhcrelay was sending relayed responses back to the | |
3608 | broadcast address, but with the source's unicast mac address. Should | |
3609 | now conform to rfc2131 section 4.1. | |
3610 | ||
3611 | - Cross-compile bug fix; use $(AR) instead of ar. Thanks to Morten Brorup. | |
3612 | ||
3613 | - Fixed a crash bug in dhclient where dhcpd servers that do not provide | |
3614 | renewal times results in an FPE. As a side effect, dhclient can now | |
3615 | properly handle 0xFFFFFFFF (-1) expiry times supplied by servers. Thanks | |
3616 | to a patch from Burt Silverman. | |
3617 | ||
3618 | - The 'ping timeout' debugs from rc12 were removed to -DDEBUG only, | |
45d545f0 | 3619 | and reformatted to correct a compilation error on Solaris platforms. |
98311e4b DH |
3620 | |
3621 | - A patch was applied which fixes a case where leases read from the | |
3622 | leases database do not properly over-ride previously read leases. | |
3623 | ||
3624 | - dhcpctl.3 manpage was tweaked. | |
3625 | ||
3626 | Changes since 3.0.1rc11 | |
3627 | ||
3628 | - A patch from Steve Campbell was applied with minor modifications to | |
3629 | permit reverse dns PTR record updates with values containing spaces. | |
3630 | ||
3631 | - A patch from Florian Lohoff was applied with some modifications to | |
3632 | dhcrelay. It now discards packets whose hop count exceeds 10 by default, | |
3633 | and a command-line option (-c) can be used to set this threshold. | |
3634 | ||
3635 | - A failover bug relating to identifying peers by name length instead of | |
3636 | by name was fixed. | |
3637 | ||
45d545f0 | 3638 | - Declaring failover configs within shared-network statements should no |
98311e4b DH |
3639 | longer result in error. |
3640 | ||
3641 | - The -nw command line option to dhclient now works. | |
3642 | ||
3643 | - Thanks to a patch from Michael Richardson: | |
3644 | - Some problems with long option processing have been fixed. | |
3645 | - Some fixes to minires so that updates of KEY records will work. | |
3646 | ||
3647 | - contrib/ms2isc was updated by Shu-Min Chang of the Intel Corporation. | |
3648 | see contrib/ms2isc/readme.txt for revision notes. | |
3649 | ||
3650 | - Dhclient no longer uses shell commands to kill another instance of | |
3651 | itself, it sends the signal directly. Thanks to a patch from Martin | |
3652 | Blapp. | |
3653 | ||
3654 | - The FreeBSD dhclient-script was changed so that a failure to write to | |
3655 | /etc/resolv.conf does not prematurely end the script. This keeps dhclient | |
3656 | from looping infinitely when this is the case. Thanks to a patch from | |
3657 | Martin Blapp. | |
3658 | ||
3659 | - A patch from Bill Stephens was applied which resolves a problem with lease | |
3660 | expiry times in failover configurations. | |
3661 | ||
3662 | - A memory leak in configuration parsing was closed thanks to a patch from | |
3663 | Steve G. | |
3664 | ||
3665 | - The function which discovers interfaces will now skip non-broadcast or | |
3666 | point-to-point interfaces, thanks to a patch from David Brownlee. | |
3667 | ||
3668 | - Options not yet known by the dhcpd or dhclient have had their names | |
3669 | changed such that they do not contain # symbols, in case they should ever | |
3670 | appear in a lease file. An option that might have been named "#144" is | |
3671 | now "unknown-144". | |
3672 | ||
3673 | - Another patch from Bill Stephens which allows the ping-check timeout to | |
3674 | be configured as 'ping-timeout'. Defaults to 1. | |
3675 | ||
3676 | Changes since 3.0.1rc10 | |
3677 | ||
3678 | - Potential buffer overflows in minires repaired. | |
3679 | ||
3680 | - A change to the linux client script to use /bin/bash, since /bin/sh may | |
3681 | not be bash. | |
3682 | ||
3683 | - Some missing va_end cleanups thanks to a patch from Thomas Klausner. | |
3684 | ||
3685 | - A correction of boolean parsing syntax validation - some illegal syntaxes | |
3686 | that worked before are now detected and produce errs, some legal syntaxes | |
3687 | that errored before will now work properly. | |
3688 | ||
3689 | - Some search-and-replace errors that caused some options to change their | |
3690 | names was repaired. | |
3691 | ||
3692 | - Shu-min Chang of the Intel corporation has contributed a perl script and | |
3693 | module that converts the MS NT4 DHCP configuration to a ISC DHCP3 | |
3694 | configuration file. | |
3695 | ||
3696 | - Applied the remainder of the dhcpctl memory leak patch provided by Bill | |
3697 | Squier at ReefEdge, Inc. (groo@reefedge.com). | |
3698 | ||
3699 | - Missing non-optional failover peer configurations will now result in a soft | |
3700 | error rather than a null dereference. | |
3701 | ||
3702 | Changes since 3.0.1rc9 | |
3703 | ||
3704 | - A format string was corrected to fix compiler warnings. | |
3705 | ||
3706 | - A number of spelling corrections were made in the man pages. | |
3707 | ||
3708 | - The dhclient.conf.5 man page was changed to refer to do-forward-updates | |
3709 | rather than a configuration option that doesn't exist. | |
3710 | ||
3711 | - A FreeBSD-specific bug in the interface removal handling was fixed. | |
3712 | ||
3713 | - A Linux-specific Token Ring detection problem was fixed. | |
3714 | ||
3715 | - Hashes removed from as-yet-unknown agent options, having those options | |
3716 | appear in reality before we know about them will no longer produce | |
3717 | self-corrupting lease databases. | |
3718 | ||
3719 | - dhclient will use the proper port numbers now when using the -g option. | |
3720 | ||
3721 | - A order-of-operations bug with 2 match clauses in 1 class statement is | |
3722 | fixed thanks to a patch from Andrew Matheson. | |
3723 | ||
3724 | - Compilation problems on Solaris were fixed. | |
3725 | ||
3726 | - Compilation problems when built with DEBUG or DEBUG_PACKET were repaired. | |
3727 | ||
3728 | - A fix to the dhcp ack process which makes certain group options will be | |
3729 | included in the first DHCPOFFER message was made thanks to a patch from | |
3730 | Ling Gou. | |
3731 | ||
3732 | - A few memory leaks were repaired thanks to patches from Bill Squier at | |
3733 | ReefEdge, Inc. (groo@reefedge.com). | |
3734 | ||
3735 | - A fix for shared-networks that sometimes give clients options for the | |
3736 | wrong subnets (in particular, 'option routers') was applied, thanks to | |
3737 | Ted Lemon for the patch. | |
3738 | ||
3739 | - Omshell's handling of dotted octets as values was changed such that dots | |
3740 | one after the other produce zero values in the integer string. | |
3741 | ||
3742 | Changes since 3.0.1rc8 | |
3743 | ||
3744 | - Fix a format string vulnerability in the server that could lead to a | |
3745 | remote root compromise (discovered by NGSEC Research Team, www.ngsec.com). | |
3746 | ||
3747 | - Add additional support for NetBSD/sparc64. | |
3748 | ||
3749 | - Fix a bug in the command-line parsing of the client. Also, resolve | |
3750 | a memory leak. | |
3751 | ||
3752 | - Add better support for shells other than bash in the Linux client | |
3753 | script. | |
3754 | ||
3755 | - Various build fixes for modern versions of FreeBSD and Linux. | |
3756 | ||
3757 | - Fix a bad bounds check when printing binding state names. | |
3758 | ||
3759 | - Clarify documentation about fixed-address and multiple addresses. | |
3760 | ||
3761 | - Fix a typo in the authoritative error message. | |
3762 | ||
3763 | - Make a log entry when we can't write a billing class. | |
3764 | ||
3765 | - Use conversion targets that are the right size on all architectures. | |
3766 | ||
3767 | - Increment the hop count when relaying. | |
3768 | ||
3769 | - Log a message when lease state is changed through OMAPI. | |
3770 | ||
3771 | - Don't rerun the shared_network when evaluating the pool. | |
3772 | ||
3773 | - Fix a reversed test in the parser. | |
3774 | ||
3775 | - Change the type of rbuf_max. | |
3776 | ||
3777 | - Make FTS_LAST a manifest constant to quiet warnings. | |
3778 | ||
3779 | Changes since 3.0.1rc7 | |
3780 | ||
3781 | - Fix two compiler warnings that are generated when compiling on Solaris | |
3782 | with gcc. These stop the build, even though they weren't actually | |
3783 | errors, because we prefer that our builds generate no warnings. | |
3784 | ||
3785 | Changes since 3.0.1rc6 | |
3786 | ||
3787 | - Don't allow a lease that's in the EXPIRED, RELEASED or RESET state | |
3788 | to be renewed. | |
3789 | ||
3790 | - Implement lease stealing for cases where the primary has fewer leases | |
3791 | than the secondary, as called for by the standard. | |
3792 | ||
3793 | - Add a fudge factor to the lease expiry acceptance code, (suggested | |
3794 | by Kevin Miller of CMU). | |
3795 | ||
3796 | - Fix a bug in permit_list_match that made it much too willing to say | |
3797 | that two permit lists matched. | |
3798 | ||
3799 | - Unless DEBUG_DNS_UPDATES is defined, print more user-friendly (and | |
3800 | also more compact) messages about DNS updates. | |
3801 | ||
3802 | - Fix a bug in generating wire-format domain names for the FQDN option. | |
3803 | ||
3804 | - Fix a bug where the FQDN option would not be returned if the client | |
3805 | requested it, contrary to the standard. | |
3806 | ||
3807 | - On Darwin, use the FreeBSD DHCP client script. | |
3808 | ||
3809 | - On NetBSD/sparc, don't check for casting warnings. | |
3810 | ||
3811 | - Add a flag in the DHCP client to disable updating the client's A | |
3812 | record when sending an FQDN option indicating that the client is | |
3813 | going to update its A record. | |
3814 | ||
3815 | - In the client, don't attempt a DNS update until one second after | |
3816 | configuring the new IP address, and if the update times out, keep | |
3817 | trying until a response, positive or negative, is received from the | |
3818 | DNS server. | |
3819 | ||
3820 | - Fix an uninitialized memory bug in the DHCP client. | |
3821 | ||
3822 | - Apply some FreeBSD-specific bug fixes suggested by Murray Stokely. | |
3823 | ||
3824 | - Fix a bug in ns_parserr(), where it was returning the wrong sort | |
3825 | of result code in some cases (suggested by Ben Harris of the | |
3826 | NetBSD project). | |
3827 | ||
3828 | - Fix a bug in is_identifier(), where it was checking against EOF | |
3829 | instead of the END_OF_FILE token (also suggested by Ben Harris). | |
3830 | ||
3831 | - Fix a bug where if an option universe contained no options, the | |
3832 | DHCP server could dump core (Walter Steiner). | |
3833 | ||
3834 | - Fix a bug in the handling of encapsulated options. | |
3835 | ||
3836 | - Fix a bug that prevented NWIP suboptions from being processed. | |
3837 | ||
3838 | - Delete the FTS_BOOTP and FTS_RESERVED states and implement them | |
3839 | as modifier flags to the FTS_ACTIVE state, as called for in the | |
3840 | failover protocol standard. | |
3841 | ||
3842 | - Fix bugs in the pool merging code that resulted in references and | |
3843 | dereferences of null pointers. This bug had no impact unless the | |
3844 | POINTER_DEBUG flag was defined. | |
3845 | ||
3846 | - In the server, added a do-forward-updates flag that can be used to | |
3847 | disable forward updates in all cases, so that sites that want the | |
3848 | clients to take sole responsibility for updating their A record can | |
3849 | do so. | |
3850 | ||
3851 | - Make it possible to disable optimization of PTR record updates. | |
3852 | ||
3853 | Changes since 3.0.1rc5 | |
3854 | ||
3855 | - Include some new documentation and changes provided by Karl Auer. | |
3856 | ||
3857 | - Add a workaround for some Lexmark printers that send a double-NUL- | |
3858 | terminated host-name option, which would break DNS updates. | |
3859 | ||
3860 | - Fix an off-by-one error in the MAC-address checking code for | |
3861 | DHCPRELEASE that was added in 3.0.1rc5. | |
3862 | ||
3863 | - Fix a bug where client-specific information was not being discarded | |
3864 | from the lease when it expired or was released, resulting in | |
3865 | problems if the lease was reallocated to a different client. | |
3866 | ||
3867 | - If more than one allocation pool is specified that has the same set | |
3868 | of constraints as another allocation pool on the same shared | |
3869 | network, merge the two pools. | |
3870 | ||
3871 | - Don't print an error in fallback_discard, since this just causes | |
3872 | confusion and does not appear to be helping to encourage anyone to | |
3873 | fix this bug. | |
3874 | ||
3875 | Changes since 3.0.1rc4 | |
3876 | ||
3877 | - Fix a bug that would cause the DHCP server to spin if asked to parse | |
3878 | a certain kind of incorrect statement. | |
3879 | ||
3880 | - Fix a related bug that would prevent an error from being reported in | |
3881 | the same case. | |
3882 | ||
3883 | - Additional documentation. | |
3884 | ||
3885 | - Make sure that the hardware address matches the lease when | |
3886 | processing a DHCPRELEASE message. | |
3887 | ||
3888 | Changes since 3.0.1rc3 | |
3889 | ||
3890 | - A minor bug fix in the arguments to a logging function call. | |
3891 | - Documentation update for dhcpd.conf. | |
3892 | ||
adbef119 | 3893 | Changes since 3.0.1rc2 |
98311e4b DH |
3894 | |
3895 | - Allow the primary to send a POOLREQ message. This isn't what the current | |
3896 | failover draft says to do, so we may have to back it out if I can't get the | |
3897 | authors to relent, but the scheme for balancing that's specified in the | |
3898 | current draft seems needlessly hairy, so I'm floating a trial balloon. | |
3899 | The rc1 code did not implement the method described in the draft either. | |
3900 | ||
adbef119 | 3901 | Changes since 3.0.1rc1 |
98311e4b DH |
3902 | |
3903 | - Treat NXDOMAIN and NXRRSET as success when we are trying to delete a | |
3904 | domain or RRSET. This allows the DHCP server to forget about a name | |
3905 | it added to the DNS once it's been removed, even if the DHCP server | |
3906 | wasn't the one that removed it. | |
3907 | ||
3908 | - Install defaults for failover maximum outstanding updates and maximum | |
3909 | silent time. This prevents problems that might occur if these values | |
3910 | were not configured. | |
3911 | ||
3912 | - Don't do DDNS deletes if ddns-update-style is none. | |
3913 | ||
3914 | - Return relay agent information options in DHCPNAK. This prevents DHCPNAK | |
3915 | messages from being dropped when the relay agent information option contains | |
3916 | routing information. | |
3917 | ||
3918 | - Fix a problem where coming up in recover wouldn't result in an update | |
3919 | request being sent. | |
3920 | ||
3921 | - Add some more chatty messages when we start a recovery update and when it's | |
3922 | done. | |
3923 | ||
3924 | - Fix a possible problem where some state might have been left around | |
3925 | after the peer lost contact and regained contact about how many updates | |
3926 | were pending. | |
3927 | ||
3928 | - Don't nix a lease update because of a lease conflict. This test has | |
3929 | never (as far as I know) prevented a mistake, and it appears to cause | |
3930 | problems with failover. | |
3931 | ||
3932 | - Add support in rc history code for keeping a selective history, rather | |
3933 | than a history of all references and dereferences. This code is only used | |
3934 | when extensive additional debugging is enabled. | |
3935 | ||
adbef119 | 3936 | Changes since 3.0 |
98311e4b DH |
3937 | |
3938 | - Make allocators for hash tables. As a side effect, this fixes a memory | |
3939 | smash in the subclass allocation code. | |
3940 | ||
3941 | - Fix a small bug in omshell where if you try to close an object when | |
3942 | no object is open, it dumps core. | |
3943 | ||
3944 | - Fix an obscure coredump that could occur on shutdown. | |
3945 | ||
3946 | - Fix a bug in the recording of host declaration rubouts in the lease file. | |
3947 | ||
3948 | - Fix two potential spins in the host deletion code. | |
3949 | ||
3950 | - Fix a core dump that would happen if an application tried to update | |
3951 | a host object attribute with a null value. | |
3952 | ||
3953 | Changes since 3.0 Release Candidate 12 | |
3954 | ||
3955 | - Fix a memory leak in the evaluation code. | |
3956 | ||
3957 | - Fix an obscure core dump. | |
3958 | ||
3959 | - Print a couple of new warnings when parsing the configuration file | |
3960 | when crucial information is left out. | |
3961 | ||
3962 | - Log "no free leases" as an error. | |
3963 | ||
3964 | - Documentation updates. | |
3965 | ||
3966 | Changes since 3.0 Release Candidate 11 | |
3967 | ||
3968 | - Always return a subnet selection option if one is sent. | |
3969 | ||
3970 | - Fix a warning that was being printed because an automatic data | |
3971 | structure wasn't zeroed. | |
3972 | ||
3973 | - Fix some failover state transitions that were being handled | |
3974 | incorrectly. | |
3975 | ||
3976 | - When supersede_lease is called on a lease whose end time has already | |
3977 | expired, but for which a state transition has not yet been done, do | |
3978 | a state transition. This fixes the case where if the secondary | |
3979 | allocated a lease to a client and the lease "expired" while the | |
3980 | secondary was in partner-down, no expiry event would actually | |
3981 | happen, so the lease would remain active until the primary was | |
3982 | restarted. | |
3983 | ||
3984 | Changes since 3.0 Release Candidate 10 | |
3985 | ||
3986 | - Fix a bug that was preventing released leases from changing state | |
3987 | in failover-enabled pools. | |
3988 | ||
3989 | - Fix a core dump in the client identifier finder code (for host | |
3990 | declarations). | |
3991 | ||
3992 | - Finish fixing a bug where bogus data would sometimes get logged to | |
3993 | the dhclient.leases file because it was opened as descriptor 2. | |
3994 | ||
3995 | - Fix the Linux dhclient-script according to suggestions made by | |
3996 | several people on the dhcp-client mailing list. | |
3997 | ||
3998 | - Log successful DNS updates at LOG_INFO, not LOG_ERROR. | |
3999 | ||
4000 | - Print an error message and refuse to run if a failover peer is | |
4001 | defined but not referenced by any pools. | |
4002 | ||
4003 | - Correct a confusing error message in failover. | |
4004 | ||
eaf0b302 TL |
4005 | Changes since 3.0 Release Candidate 9 |
4006 | ||
4007 | - Fix a bug in lease allocation for Dynamic BOOTP clients. | |
4008 | ||
0db87765 TL |
4009 | Changes since 3.0 Release Candidate 8 Patchlevel 2 |
4010 | ||
4011 | - Fix a bug that prevented update-static-leases from working. | |
4012 | ||
4013 | - Document failover-state OMAPI object. | |
4014 | ||
4015 | - Fix a compilation error on SunOS 4. | |
4016 | ||
d758ad8c TL |
4017 | Changes since 3.0 Release Candidate 8 Patchlevel 1 |
4018 | ||
4019 | - Fix a parsing bug that broke dns updates (both interim and ad-hoc). | |
4020 | This was introduced in rc8pl1 as an unintended result of the memory | |
4021 | leakage fixes that were in pl1. | |
4022 | ||
4023 | - Fix a long-standing bug where the server would record that an update | |
4024 | had been done for a client with no name, even though no update had | |
4025 | been done, and then when the client's lease expired the deletion of | |
4026 | that nonexistant record would time out because the name was the null | |
9a111ee8 | 4027 | string. |
d758ad8c TL |
4028 | |
4029 | - Clean up the omshell, dhcpctl and omapi man pages a bit. | |
4030 | ||
d758ad8c TL |
4031 | Changes since 3.0 Release Candidate 8 |
4032 | ||
4033 | - Fix a bug that could cause the DHCP server to spin if | |
4034 | one-lease-per-client was enabled. | |
4035 | ||
4036 | - Fix a bug that was causing core dumps on BSD/os in the presence of | |
4037 | malformed packets. | |
4038 | ||
4039 | - In partner-down state, don't restrict lease lengths to MCLT. | |
4040 | ||
4041 | - On the failover secondary, record the MCLT received from the primary | |
4042 | so that if we come up without a connection to the primary we don't | |
4043 | wind up giving out zero-length leases. | |
4044 | ||
4045 | - Fix some compilation problems on BSD/os. | |
4046 | ||
4047 | - Fix a bunch of memory leaks. | |
4048 | ||
4049 | - Fix a couple of bugs in the option printer. | |
4050 | ||
4051 | - Fix an obscure error reporting bug in the dns update code, and also | |
4052 | make the message clearer when a key algorithm isn't supported. | |
4053 | ||
4054 | - Fix a bug in the tracing code that prevented trace runs that used | |
4055 | tcp connections from being played back. | |
4056 | ||
4057 | - Add some additional debugging capability for catching memory leaks | |
4058 | on exit. | |
4059 | ||
4060 | - Make the client release the lease correctly on shutdown. | |
4061 | ||
4062 | - Add some configurability to the build system. | |
4063 | ||
4064 | - Install omshell manual page in man1, not man8. | |
4065 | ||
4066 | - Craig Gwydir sent in a patch that fixes a long-standing bug in the | |
4067 | DHCP client that could cause core dumps, but that for some reason | |
4068 | hadn't been noticed until now. | |
4069 | ||
4070 | Changes since 3.0 Release Candidate 7 | |
4071 | ||
4072 | - Fix a bug in failover where we weren't sending updates after a | |
4073 | transition from communications-interrupted to normal. | |
4074 | ||
4075 | - Handle expired/released/reset -> free transition according to the | |
4076 | protocol specification (this works - the other way not only wasn't | |
4077 | conformant, but also didn't work). | |
4078 | ||
4079 | - Add a control object in both client and server that allows either | |
4080 | daemon to be shut down cleanly. | |
4081 | ||
4082 | - When writing a lease, if we run out of disk space, shut down the | |
4083 | output file and insist on writing a new one before proceeding. | |
4084 | ||
4085 | - In the server, if the OMAPI listener port is occupied, keep trying | |
4086 | to get it, rather than simply giving up and exiting. | |
4087 | ||
4088 | - Support fetching variables from leases and also updating and adding | |
4089 | variables to leases via OMAPI. | |
4090 | ||
4091 | - If two failover peers have wildly different clocks, refuse to start | |
4092 | doing failover. | |
4093 | ||
4094 | - Fix a bug in the DNS update code that could cause core dumps when | |
4095 | running on alpha processors. | |
4096 | ||
4097 | - Fixed a bug in ddns updates for static lease entries, thanks to a | |
4098 | patch from Andrey M Linkevitch. | |
4099 | ||
4100 | - Add support for Darwin/MacOS X | |
4101 | ||
4102 | - Install omshell (including new documentation). | |
4103 | ||
4104 | - Support DNS updates in the client (this is a very obscure feature | |
4105 | that most DHCP client users probably will not be able to use). | |
4106 | ||
4107 | - Somewhat cleaner status logging in the client. | |
4108 | ||
4109 | - Make OMAPI key naming syntax compatible with the way keys are | |
4110 | actually named (key names are domain names). | |
4111 | ||
4112 | - Fix a bug in the lease file writer. | |
4113 | ||
4114 | - Install DHCP ISC headers in a different place than BIND 9 ISC | |
4115 | headers, to avoid causing trouble in BIND 9 builds. | |
4116 | ||
4117 | - Don't send updates for attributes on an object when the attributes | |
4118 | haven't changed. Support deleting attributes on remote objects. | |
4119 | ||
4120 | - Fix a number of bugs in omshell, and add the unset and refresh | |
4121 | statements. | |
4122 | ||
4123 | - Handle disconnects in OMAPI a little bit more intelligently (so that | |
4124 | the caller gets ECONNRESET instead of EINVAL). | |
4125 | ||
4126 | - Fix a bunch of bugs in the handling of clients that have existing | |
4127 | leases when the try to renew their leases while failover is | |
4128 | operating. | |
4129 | ||
eaf0b302 TL |
4130 | Changes since 3.0 Release Candidate 6 |
4131 | ||
4132 | - Fix a core dump that could happen when processing a DHCPREQUEST from | |
4133 | a client that had a host declaration that contained both a | |
4134 | fixed-address declaration and a dhcp-client-identifier option | |
4135 | declaration, if the client identifier was longer than nine bytes. | |
4136 | ||
4137 | - Fix a memory leak that could happen in certain obscure cases when | |
4138 | using omapi to manipulate leases. | |
4139 | ||
4140 | - Fix some bugs and omissions in omshell. | |
4141 | ||
eaf0b302 TL |
4142 | Changes since 3.0 Release Candidate 5 |
4143 | ||
4144 | - Fix a bug in omapi_object_dereference that prevented objects in | |
4145 | chains from having their reference counts decreased on dereference. | |
4146 | ||
4147 | - Fix a bug in omapi_object_dereference that would prevent object | |
4148 | chains from being freed upon removal of the last reference external | |
4149 | to the chain. | |
4150 | ||
4151 | - Fix a number of other memory leaks in the OMAPI protocol subsystem. | |
4152 | ||
4153 | - Add code in the OMAPI protocol handler to trace memory leakage. | |
4154 | ||
4155 | - Clean up the memory allocation/reference history printer. | |
4156 | ||
98311e4b | 4157 | - Support input of dotted quads and colon-separated hex lists as |
eaf0b302 TL |
4158 | attribute values in omshell. |
4159 | ||
98311e4b | 4160 | - Fix a typo in the Linux interface discovery code. |
eaf0b302 TL |
4161 | |
4162 | - Conditionalize a piece of trace code that wasn't conditional. | |
4163 | ||
4164 | Changes since 3.0 Release Candidate 4 | |
4165 | ||
4166 | - Fix a bug that would prevent leases from being abandoned properly on | |
4167 | DHCPDECLINE. | |
4168 | ||
4169 | - Fix failover peer OMAPI support. | |
4170 | ||
4171 | - In failover, correctly handle expiration of leases. Previously, | |
4172 | leases would never be reclaimed because they couldn't make the | |
4173 | transition from EXPIRED to FREE. | |
4174 | ||
4175 | - Fix some broken failover state transitions. | |
4176 | ||
4177 | - Documentation fixes. | |
4178 | ||
4179 | - Take out an unnecessary check in DHCP relay agent information option | |
4180 | stashing code that was preventing REBINDING clients from rebinding. | |
4181 | ||
4182 | - Prevent failover peers from allocating leases in DHCPREQUEST | |
4183 | processing if the lease belongs to the other server. | |
4184 | ||
4185 | - Record server version in lease file introductory comment. | |
4186 | ||
4187 | - Correctly report connection errors in OMAPI and failover. | |
4188 | ||
4189 | - Make authentication signature algorithm name comparisons in OMAPI | |
4190 | case-insensitive. | |
4191 | ||
4192 | - Fix compile problem on SunOS 4.x | |
4193 | ||
98311e4b | 4194 | - If a signature algorithm is not terminated with '.', terminate it so |
eaf0b302 TL |
4195 | that comparisons between fully-qualified names will work |
4196 | consistently. | |
4197 | ||
4198 | - Different SIOCGIFCONF probe code, may "fix" problem on some Linux | |
4199 | systems with the probe not working correctly. | |
4200 | ||
4201 | - Don't allow user to type omapi key on command line of omshell. | |
4202 | ||
0596b051 TL |
4203 | Changes since 3.0 Release Candidate 3 |
4204 | ||
4205 | - Do lease billing on startup in a way that I *think* will finally do | |
4206 | the billing correctly - the previous method could overbill as a | |
4207 | result of duplicate leases. | |
4208 | ||
4209 | - Document OMAPI server objects. | |
4210 | ||
892fe689 TL |
4211 | Changes since 3.0 Release Candidate 2 Patchlevel 1 |
4212 | ||
4213 | - Fix some problems in the DDNS update code. Thanks to Albert | |
4214 | Herranz for figuring out the main problem. | |
4215 | ||
4216 | - Fix some reference counting errors on host entries that were causing | |
4217 | core dumps. | |
4218 | ||
4219 | - Fix a byte-swap bug in the token ring code, thanks to Jochen | |
4220 | Friedrich. | |
4221 | ||
4222 | - Fix a bug in lease billing, thanks to Jonas Bulow. | |
4223 | ||
4224 | Changes since 3.0 Release Candidate 2 | |
4225 | ||
4226 | - Change the conditions under which a DHCPRELEASE is actually | |
4227 | committed to be consistent with lease binding states rather than | |
98311e4b | 4228 | using the lease end time. This may fix some problems with the |
892fe689 TL |
4229 | billing class code. |
4230 | ||
4231 | - Fix a bug where lease updates would fail on Digital Unix (and maybe | |
4232 | others) because malloc was called with a size of zero. | |
4233 | ||
4234 | - Fix a core dump that happens when the DHCP server can't create its | |
4235 | trace file. | |
4236 | ||
79ea3de8 | 4237 | Changes since 3.0 Release Candidate 1 Patchlevel 1 |
87784777 | 4238 | |
79ea3de8 TL |
4239 | - Fix the dhcp_failover_put_message to not attempt to allocate a |
4240 | zero-length buffer. Some versions of malloc() fail if you try to | |
4241 | allocate a zero-length buffer, and this was causing problems on, | |
4242 | e.g., Digital Unix. | |
4243 | ||
4244 | - Fix a case where the failover code was printing an error message | |
4245 | when no error had occurred. | |
4246 | ||
4247 | - Fix a problem where when a server went down and back up again, the | |
4248 | peer would not see a state transition and so would stay in the | |
4249 | non-communicating state. | |
4250 | ||
4251 | - Be smart about going into recover_wait. | |
4252 | ||
4253 | - Fix a problem in the failover implementation where peers would fail | |
4254 | to come into sync if interrupted in the RECOVER state. This could | |
4255 | have been the cause of some problems people have reported recently. | |
4256 | ||
4257 | - Fix a problem with billing classes where they would not be unbilled | |
4258 | when the client lease expired. | |
4259 | ||
4260 | - If select fails, figure out which descriptor is bad, and cut it out | |
4261 | of the I/O loop. This prevents a potentially nasty spin. I | |
4262 | haven't heard any report it in a while, but it came up consistently | |
4263 | in testing. | |
4264 | ||
4265 | - Fix a bug in the relay agent where if you specified interfaces on | |
4266 | the command line, it would fail. | |
4267 | ||
4268 | - Fix a couple of small bugs in the omapi connection object (no known | |
4269 | user impact). | |
4270 | ||
4271 | - Add the missing 3.0 Beta 1 lease conversion script. | |
4272 | ||
4273 | - Read dhcp client script hooks if they exist, rather than only if | |
4274 | they're executable. | |
4275 | ||
4276 | Changes since 3.0 Release Candidate 1 | |
87784777 TL |
4277 | |
4278 | - Fix a memory smash that happens when fixed-address leases are used. | |
4279 | ANY SITE AT WHICH FIXED-ADDRESS STATEMENTS ARE BEING USED SHOULD | |
4280 | UPGRADE IMMEDIATELY. This has been a long-standing bug - thanks to | |
4281 | Alvise Nobile for discovering it and helping me to find it! | |
4282 | ||
79ea3de8 TL |
4283 | - Fix a small bug in binary-to-ascii, thanks to H. Peter Anvin of |
4284 | Transmeta. | |
4285 | ||
87784777 TL |
4286 | - There is a known problem with the DHCP server doing failover on |
4287 | Compaq Alpha systems. This patchlevel is not a release candidate | |
4288 | because of this bug. The bug should be straightforward to fix, so | |
4289 | a new release candidate is expected shortly. | |
4290 | ||
4291 | - There is a known problem in the DDNS update code that is probably a | |
4292 | bug, and is not, as far as we know, fixed in this patchlevel. | |
4293 | ||
6d779c72 TL |
4294 | Changes since 3.0 Beta 2 Patchlevel 24 |
4295 | ||
4296 | - Went over problematic failover state transitions and made them all | |
4297 | work, so that failover should now much less fragile. | |
4298 | ||
4299 | - Add some dhcpctl and omapi documentation | |
4300 | ||
4301 | - Fix compile errors when compiling with unusual predefines. | |
4302 | ||
4303 | - Make Token Ring work on Linux 2.4 | |
4304 | ||
4305 | - Fix the Digital Unix BPF_WORDALIGN bug. | |
4306 | ||
4307 | - Fix some dhcp client documentation errors. | |
4308 | ||
4309 | - Update some parts of the README file. | |
4310 | ||
4311 | - Support GCC on SCO. | |
4312 | ||
adbef119 | 4313 | Changes since 3.0 Beta 2 Patchlevel 23 |
de57e64b TL |
4314 | |
4315 | - Fix a bug in the DNS update code where a status code was not being | |
4316 | checked. This may have been causing core dumps. | |
4317 | ||
4318 | - When parsing the lease file, if a lease declaration includes a | |
4319 | billing class statement, and the lease already has a billing class, | |
4320 | unbill the old class. | |
4321 | ||
4322 | - When processing failover transactions, where acks will be deferred, | |
4323 | process the state transition immediately. | |
4324 | ||
4325 | - Don't try to use the new SIOCGIFCONF buffer size detection code on | |
4326 | Linux 2.0, which doesn't provide this functionality. | |
4327 | ||
4328 | - Apply a patch suggested by Tuan Uong for a problem in dlpi.c. | |
4329 | ||
4330 | - Fix a problem in using the which command in the configure script. | |
4331 | ||
4332 | - Fix a parse error in the client when setting up an omapi listener. | |
4333 | ||
4334 | - Document the -n and -g flags to the client. | |
4335 | ||
4336 | - Make sure there is always a stdin and stdout on startup. This | |
4337 | prevents shell scripts from accidentally writing error messages into | |
4338 | configuration files that happen to be opened as stderr. | |
4339 | ||
4340 | - If an interface is removed, the client will now notice that it is | |
4341 | gone rather than spinning. This has only been tested on NetBSD. | |
4342 | ||
4343 | - The client will attempt to get an address even if it can't create a | |
4344 | lease file. | |
4345 | ||
4346 | - Don't overwrite tracefiles. | |
4347 | ||
4348 | - Fix some memory allocation bugs in failover. | |
2aa36519 | 4349 | |
adbef119 | 4350 | Changes since 3.0 Beta 2 Patchlevel 22 |
140158d3 TL |
4351 | |
4352 | - Apply some patches suggested by Cyrille Lefevre, who is maintaining | |
4353 | the FreeBSD ISC DHCP Distribution port. | |
4354 | ||
4355 | - Fix a core dump in DHCPRELEASE. | |
4356 | ||
adbef119 | 4357 | Changes since 3.0 Beta 2 Patchlevel 21 |
3a395e60 TL |
4358 | |
4359 | - This time for sure: fix the spin described in the changes for pl20. | |
4360 | ||
adbef119 | 4361 | Changes since 3.0 Beta 2 Patchlevel 20 |
fc74dd0c TL |
4362 | |
4363 | - Fix a problem with Linux detecting large numbers of interfaces (Ben) | |
4364 | ||
4365 | - Fix a memory smash in the quotify code, which was introduced in | |
4366 | pl19. | |
4367 | ||
4368 | - Actually fix the spin described in the changes for pl20. The | |
4369 | previous fix only partially fixed the problem - enough to get it | |
4370 | past the regression test. | |
4371 | ||
adbef119 | 4372 | Changes since 3.0 Beta 2 Patchlevel 19 |
ed5ee591 TL |
4373 | |
4374 | - Fix a bug that could cause the server to abort if compiled with | |
4375 | POINTER_DEBUG enabled. | |
4376 | ||
4377 | - Fix a bug that could cause the server to spin when responding to a | |
4378 | DHCPREQUEST. | |
4379 | ||
4380 | - Apply Joost Mulders' suggested patches for DLPI on x86. | |
4381 | ||
4382 | - Support NUL characters in quoted strings. | |
4383 | ||
4384 | - Install unformatted man pages on SunOS. | |
4385 | ||
adbef119 | 4386 | Changes since 3.0 Beta 2 Patchlevel 18 |
b3fad8ac | 4387 | |
3350f5b7 TL |
4388 | - Allow the server to be placed in partner-down state using OMAPI. |
4389 | (Damien Neil) | |
4390 | ||
4391 | - Implement omshell, which can be used to do arbitrary things to the | |
4392 | server (in theory). (Damien Neil) | |
4393 | ||
4394 | - Fix a case where if a client had two different leases the server could | |
4395 | actually dereference the second one when it hadn't been referenced, | |
4396 | leading to memory corruption and a core dump. (James Brister) | |
4397 | ||
4398 | - Fix a case where a client could request the address of another client's | |
4399 | lease, but find_lease wouldn't detect that the other client had it, and | |
4400 | would attempt to allocate it to the client, resulting in a lease conflict | |
4401 | message. | |
4402 | ||
4403 | - Fix a case where a client with more than one client identifier could be | |
4404 | given a lease where the hardware address was correct but the client | |
4405 | identifier was not, resulting in a lease conflict message. | |
4406 | ||
98311e4b | 4407 | - Fix a problem where the server could write out a colon-separated |
3350f5b7 TL |
4408 | hex list as a value for a variable, which would then not parse. |
4409 | The fix is to always write strings as quoted strings, with any | |
4410 | non-printable characters quoted as octal escape sequences. So | |
4411 | a file written the old way still won't work, but new files written | |
4412 | this way will work. | |
4413 | ||
b3fad8ac TL |
4414 | - Fix documentation for sending non-standard options. |
4415 | ||
4416 | - Use unparsable names for unknown options. WARNING: this will | |
4417 | break any configuration files that use the option-nnn convention. | |
4418 | If you want to continue to use this convention for some options, | |
4419 | please be sure to write a definition, like this: | |
4420 | ||
4421 | option option-nnn code nnn = string; | |
4422 | ||
4423 | You can use a descriptive name instead of option-nnn if you like. | |
4424 | ||
4425 | - Fix a problem where we would see a DHCPDISCOVER/DHCPOFFER/ | |
4426 | DHCPREQUEST/DHCPACK/DHCPREQUEST/DHCPNAK sequence. This was the | |
4427 | result of a deceptively silly bug in supersede_lease. | |
4428 | ||
4429 | - Fix client script exit status check, according to a fix supplied by | |
4430 | Hermann Lauer. | |
4431 | ||
4432 | - Fix an endianness bug in the tracefile support, regarding ICMP | |
4433 | messages. | |
4434 | ||
3350f5b7 TL |
4435 | - Fix a bug in the client where the medium would not work correctly if |
4436 | it contained quoted strings. | |
4437 | ||
b3fad8ac TL |
4438 | ** there was no pl17 ** |
4439 | ||
adbef119 | 4440 | Changes since 3.0 Beta 2 Patchlevel 16 |
e6d30fd6 | 4441 | |
6da9db9d TL |
4442 | - Add support for transaction tracing. This allows the state of the |
4443 | DHCP server on startup, and all the subsequent transactions, to be | |
4444 | recorded in a file which can then be played back to reproduce the | |
4445 | behaviour of the DHCP server. This can be used to quickly | |
4446 | reproduce bugs that cause core dumps or corruption, and also for | |
4447 | tracking down memory leaks. | |
4448 | ||
4449 | - Incorporate some bug fixes provided by Joost Mulders for the DLPI | |
4450 | package which should clear up problems people have been seeing on | |
4451 | Solaris. | |
4452 | ||
4453 | - Fix bugs in the handling of options stored as linked lists (agent | |
4454 | options, fqdn options and nwip options) that could cause memory | |
4455 | corruption and core dumps. | |
4456 | ||
4457 | - Fix a bug in DHCPREQUEST handling that resulted in DHCPNAK messages | |
4458 | not being send in some cases when they were needed. | |
4459 | ||
4460 | - Make the lease structure somewhat more compact. | |
4461 | ||
4462 | - Make initial failover startup *much* faster. This was researched | |
4463 | and implemented by Damien Neil. | |
4464 | ||
4465 | - Add a --version flag to all executables, which prints the program | |
4466 | name and version to standard output. | |
4467 | ||
4468 | - Don't rewrite the lease file every thousand leases. | |
4469 | ||
e6d30fd6 TL |
4470 | - A bug in nit.c for older SunOS machines was fixed by a patch sent in |
4471 | by Takeshi Hagiwara. | |
4472 | ||
6da9db9d TL |
4473 | - Fix a memory corruption bug in the DHCP client. |
4474 | ||
4475 | - Lots of documentation updates. | |
4476 | ||
4477 | - Add a feature allowing environment variables to be passed to the | |
4478 | DHCP client script on the DHCP client command line. | |
4479 | ||
4480 | - Fix client medium support, which had been broken for some time. | |
4481 | ||
4482 | - Fix a bug in the DHCP client initial startup backoff interval, which | |
4483 | would cause two DHCPDISCOVERS to be sent back-to-back on startup. | |
4484 | ||
adbef119 | 4485 | Changes since 3.0 Beta 2 Patchlevel 15 |
af49fdff TL |
4486 | |
4487 | - Some documentation tweaks. | |
4488 | ||
4489 | - Maybe fix a problem in the DLPI code. | |
4490 | ||
4491 | - Fix some error code space inconsistencies in ddns update code. | |
4492 | ||
4493 | - Support relay agents that intercept unicast DHCP messages to stuff | |
4494 | agent options into them. | |
4495 | ||
4496 | - Fix a small memory leak in the relay agent option support code. | |
4497 | ||
c5b569f8 TL |
4498 | - Fix a core dump that would occur if a packet was sent with no |
4499 | options. | |
4500 | ||
adbef119 | 4501 | Changes since 3.0 Beta 2 Patchlevel 14 |
754ae3e9 TL |
4502 | |
4503 | - Finish fixing a long-standing bug in the agent options code. This | |
4504 | was causing core dumps and failing to operate correctly - in | |
4505 | particular, agent option stashing wasn't working. Agent option | |
4506 | stashing should now be working, meaning that agent options can be | |
4507 | used in class statements to control address allocation. | |
4508 | ||
4509 | - Fix up documentation. | |
4510 | ||
4511 | - Fix a couple of small memory leaks that would have added up | |
4512 | significantly in a high-demand situation. | |
4513 | ||
4514 | - Add a log-facility configuration parameter. | |
4515 | ||
4516 | - Fix a compile error on some older operating systems. | |
4517 | ||
4518 | - Add the ability in the client to execute certain statements before | |
4519 | transmitting packets to the server. Handy for debugging; not much | |
4520 | practical use otherwise. | |
4521 | ||
4522 | - Don't send faked-out giaddr when renewing or bound - again, useful | |
4523 | for debugging. | |
4524 | ||
adbef119 | 4525 | Changes since 3.0 Beta 2 Patchlevel 13 |
2f2e7960 TL |
4526 | |
4527 | - Fixed a problem where the fqdn decoder would sometimes try to store | |
4528 | an option with an (unsigned) negative length, resulting in a core | |
4529 | dump on some systems. | |
4530 | ||
4531 | - Work around the Win98 DHCP client, which NUL-terminates the FQDN | |
4532 | option. | |
4533 | ||
4534 | - Work around Win98 and Win2k clients that will claim they want to do | |
4535 | the update even when they don't have any way to do it. | |
4536 | ||
4537 | - Fix some log messages that can be printed when failover is operating | |
4538 | that were not printing enough information. | |
4539 | ||
4540 | - It was possible for a DHCPDISCOVER to get an allocation even when | |
4541 | the state machine said the server shouldn't be responding. | |
4542 | ||
4543 | - Don't load balance DHCPREQUESTs from clients in RENEWING and | |
4544 | REBINDING, since in RENEWING, if we heard it, it's for us, and in | |
4545 | REBINDING, the client wouldn't have got to REBINDING if its primary | |
4546 | were answering. | |
4547 | ||
4548 | - When we get a bogus state lease binding state transition, don't do | |
4549 | the transition. | |
9a111ee8 | 4550 | |
2f2e7960 | 4551 | |
adbef119 | 4552 | Changes since 3.0 Beta 2 Patchlevel 12 |
66e98927 TL |
4553 | |
4554 | - Fixed a couple of silly compile errors. | |
4555 | ||
a1e2e3d6 TL |
4556 | Changes since 3.0 Beta 2 Patchlevel 11 |
4557 | ||
4558 | - Albert Herranz tracked down and fixed a subtle bug in the base64 | |
4559 | decoder that would prevent any key with an 'x' in its base64 | |
4560 | representation from working correctly. | |
4561 | ||
4562 | - Thanks to Chris Cheney and Michael Sanders, we have a fix for the | |
4563 | hang that they both spotted in the DHCP server - when | |
4564 | one-lease-per-client was set, the code to release the "other" lease | |
4565 | could spin. | |
4566 | ||
4567 | - Fix a problem with alignment of the input buffer in bpf in cases | |
4568 | where two packets arrive in the same bpf read. | |
4569 | ||
4570 | - Fix a problem where the relay agent would crash if you specified an | |
4571 | interface name on the command line. | |
4572 | ||
4573 | - Add the ability to conditionalize client behaviour based on the | |
4574 | client state. | |
4575 | ||
4576 | - Add support for the FQDN option, and added support for a new way of | |
4577 | doing ddns updates (ddns update style interim) that allows more than | |
4578 | one DHCP server to update the DNS for the same network(s). This | |
4579 | was implemented by Damien Neil with some additional functionality | |
4580 | added by Ted Lemon. | |
4581 | ||
4582 | - Damien added a "log" statement, so that the configuration file can | |
4583 | be made to log debugging information and other information. | |
4584 | ||
4585 | - Fixed a bug that caused option buffers not to be terminated with an | |
4586 | end option. | |
4587 | ||
4588 | - Fixed a long-standing bug in the support for option spaces where the | |
4589 | options are stored as an ordered list rather than in a hash table, | |
4590 | which could theoretically result in memory pool corruption. | |
4591 | ||
4592 | - Prevent hardware declarations with no actual hardware address from | |
4593 | being written as something unparsable, and behave correctly in the | |
4594 | face of a null hardware address on input. | |
4595 | ||
4596 | - Allow key names to be FQDNs, and qualify the algorithm name if it is | |
4597 | specified unqualified. | |
4598 | ||
4599 | - Modify the DDNS update code so that it never prints the "resolver | |
4600 | failed" message, but instead says *why* the resolver failed. | |
4601 | ||
4602 | - Officially support the subnet selection option, which now has an | |
4603 | RFC. | |
4604 | ||
4605 | - Fix a build bug on MacOS X. | |
4606 | ||
4607 | - Allow administrator to disable ping checking. | |
4608 | ||
4609 | - Clean up dhcpd.conf documentation and add more information about how | |
4610 | it works. | |
4611 | ||
6c68ec36 TL |
4612 | Changes since 3.0 Beta 2 Patchlevel 10 |
4613 | ||
4614 | - Fix a bug introduced during debugging (!) and accidentally committed | |
4615 | to CVS. | |
4616 | ||
9fd337e7 TL |
4617 | Changes since 3.0 Beta 2 Patchlevel 9 |
4618 | ||
4619 | - Fix DHCP client handling of vendor encapsulated options. | |
4620 | ||
4621 | - Fix a bug in the handling of relay agent information options introduced | |
4622 | in patchlevel 9. | |
4623 | ||
4624 | - Stash agent options on client leases by default, and use the stashed | |
4625 | options at renewal time. | |
4626 | ||
4627 | - Add the ability to test the client's binding state in the client | |
4628 | configuration language. | |
4629 | ||
4630 | - Fix a core dump in the DNS update code. | |
4631 | ||
4632 | - Fix some expression evaluation bugs that were causing updates to be | |
4633 | done when no client hostname was received. | |
4634 | ||
4635 | - Fix expression evaluation debugging printfs. | |
4636 | ||
4637 | - Teach pretty_print_option to print options in option spaces other than | |
4638 | the DHCP option space. | |
4639 | ||
4640 | - Add a warning message if the RHS of a not is not boolean. | |
4641 | ||
4642 | - Never select for more than a day, because some implementations of | |
4643 | select will just fail if the timeout is too long (!). | |
4644 | ||
4645 | - Fix a case where a DHCPDISCOVER from an unknown network would be | |
4646 | silently dropped. | |
4647 | ||
4648 | - Fix a bug where if a client requested an IP address for which a different | |
4649 | client had the lease, the DHCP server would reallocate it anyway. | |
4650 | ||
4651 | - Fix the DNS update code so that if the client changes its name, the DNS | |
4652 | will be correctly updated. | |
4653 | ||
3922772a TL |
4654 | Changes since 3.0 Beta 2 Patchlevel 8 |
4655 | ||
4656 | - Oops, there was another subtle math error in the header-length | |
4657 | bounds-checking. | |
4658 | ||
4659 | Changes since 3.0 Beta 2 Patchlevel 7 | |
848c2547 TL |
4660 | |
4661 | - Oops, forgot to byte-swap udp header length before bounds-checking it. | |
4662 | ||
3922772a | 4663 | Changes since 3.0 Beta 2 Patchlevel 6 |
0f6045f8 | 4664 | |
f8572308 TL |
4665 | - Fix a possible DoS attack where a client could cause the checksummer |
4666 | to dump core. This was a read, not a write, so it shouldn't be | |
4667 | possible to exploit it any further than that. | |
4668 | ||
4669 | - Implement client- and server-side support for using the Client FQDN | |
4670 | option. | |
4671 | ||
4672 | - Support for other option spaces in the client has been added. This | |
4673 | means that it is now possible to define a vendor option space on the | |
4674 | client, request options in that space from the server (which must | |
4675 | define the same option space), and then use those options in the | |
4676 | client. This also allows NWIP and Client FQDN options to be used | |
4677 | meaningfully. | |
4678 | ||
4679 | - Add object initializer support. This means that objects can now be | |
4680 | initialized to something other than all-zeros when allocated, which | |
4681 | makes, e.g., the interface object support code a little more robust. | |
4682 | ||
4683 | - Fix an off-by-one bug in the host stuffer. This was causing host | |
4684 | deletes not the work, and may also have been causing OMAPI | |
4685 | connections to get dropped. Thanks to James Brister for tracking | |
4686 | this one down! | |
4687 | ||
4688 | - Fixed a core dump in the interface discovery code that is triggered | |
4689 | when there is no subnet declaration for an interface, but the server | |
4690 | decides to continue running. Thanks to Shane Kerr for tracking | |
4691 | down and fixing this problem. | |
4692 | ||
4693 | Changes since 3.0 Beta 2 Patchlevel 5 | |
4694 | ||
0f6045f8 TL |
4695 | - Fix a bug in the recent enhancement to the interface discovery code |
4696 | to support arbitrary-length interface lists. | |
4697 | ||
4698 | - Support NUL-terminated DHCP options when initializing client-script | |
4699 | environment. | |
4700 | ||
4701 | - Fix suffix operator. | |
4702 | ||
4703 | - Fix NetWare/IP option parsing. | |
4704 | ||
4705 | - Better error/status checking in dhcpctl initialization and omapi | |
4706 | connection code. | |
4707 | ||
4708 | - Fix a potential memory smash in dhcpctl code. | |
4709 | ||
4710 | - Fix SunOS4 and (maybe) Ultrix builds. | |
4711 | ||
4712 | - Fix a bug where a certain sort of incoming packet could cause a core | |
4713 | dump on Solaris (and probably elsewhere). | |
4714 | ||
4715 | - Add some more safety checks in error logging code. | |
4716 | ||
4717 | - Add support for ISC_R_INCOMPLETE in OMAPI protocol connection code. | |
4718 | ||
4719 | - Fix relay agent so that if an interface is specified on the command | |
4720 | line, the relay agent does not dump core. | |
4721 | ||
4722 | - Fix class matching so that match if can be combined with match or | |
4723 | spawn with. | |
4724 | ||
4725 | - Do not allow spurious leases in the lease database to introduce | |
4726 | potentially bogus leases into the in-memory database. | |
4727 | ||
4728 | - Fix a byte-order problem in the client hardware address type code | |
4729 | for OMAPI. | |
4730 | ||
4731 | - Be slightly less picky about what sort of hardware addresses OMAPI | |
4732 | can install in host declarations. | |
4733 | ||
801de092 TL |
4734 | Changes since 3.0 Beta 2 Patchlevel 4 |
4735 | ||
4736 | - Incorporated Peter Marschall's proposed change to array/record | |
4737 | parsing, which allows things like the slp-agent option to be encoded | |
4738 | correctly. Thanks very much to Peter for taking the initiative to | |
4739 | do this, and for doing such a careful job of it (e.g., updating the | |
4740 | comments)! | |
4741 | ||
4742 | - Added an encoding for the slp-agent option. :') | |
4743 | ||
6ed7a93d TL |
4744 | - Fixed SunOS 4 build. Thanks to Robert Elz for responding to my |
4745 | request for help on this with patches! | |
4746 | ||
4747 | - Incorporated a change that should fix a problem reported by Philippe | |
4748 | Jumelle where when the network connection between two servers is | |
4749 | lost, they never reconnect. | |
4750 | ||
4751 | - Fix client script files other than that for NetBSD to actually use | |
4752 | make_resolv_conf as documented in the manual page. | |
4753 | ||
4754 | - Fix a bug in the packet handling code that could result in a core | |
4755 | dump. | |
4756 | ||
4757 | - Fix a bug in the bootp code where responses on the local net would | |
4758 | be sent to the wrong MAC address. Thanks to Jerry Schave for | |
4759 | catching this one. | |
4760 | ||
490eb5e7 TL |
4761 | Changes since 3.0 Beta 2 Patchlevel 3 |
4762 | ||
4763 | - In the DHCP client, execute client statements prior to using the values | |
45d545f0 | 4764 | of options, so that the client configuration can overridden, e.g., the |
490eb5e7 TL |
4765 | lease renewal time. |
4766 | ||
4767 | - Fix a reference counting error that would result in very reproducible | |
4768 | failures in updates, as well as occasional core dumps, if a zone was | |
4769 | declared without a key. | |
4770 | ||
4771 | - Fix some Linux 2.0 compilation problems. | |
4772 | ||
4773 | - Fix a bug in scope evaluation during execution of "on" statements that | |
4774 | caused values not to be recorded on leases. | |
4775 | ||
4776 | - If the dhcp-max-message-size option is specified in scope, and the | |
4777 | client didn't send this option, use the one specified in scope to | |
4778 | determine the maximum size of the response. | |
4779 | ||
592d8153 TL |
4780 | Changes since 3.0 Beta 2 Patchlevel 2 |
4781 | ||
359b023e TL |
4782 | - Fix a case where spawning subclasses were being allocated |
4783 | incorrectly, resulting in a core dump. | |
4784 | ||
592d8153 TL |
4785 | - Fix a case where the DHCP server might inappropriately NAK a |
4786 | RENEWING client. | |
4787 | ||
4788 | - Fix a place dhcprequest() where static leases could leak. | |
4789 | ||
4790 | - Include memory.h in omapip_p.h so that we don't get warnings about | |
4791 | using memcmp(). | |
4792 | ||
2aa36519 TL |
4793 | Changes since 3.0 Beta 2 Patchlevel 1 |
4794 | ||
4795 | - Notice when SIOCFIGCONF returns more data than fit in the buffer - | |
4796 | allocate a larger buffer, and retry. Thanks to Greg Fausak for | |
4797 | pointing this out. | |
4798 | ||
4799 | - In the server, if no interfaces were configured, report an error and | |
4800 | exit. | |
4801 | ||
4802 | - Don't ever record a state of 'startup'. | |
4803 | ||
4804 | - Don't try to evaluate the local failover binding address if none was | |
4805 | specified. Thanks to Joseph Breu for finding this. |