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98311e4b | 1 | Internet Systems Consortium DHCP Distribution |
32da1939 SR |
2 | Version 4.3.0a1 |
3 | 17 December 2013 | |
72c7bd79 | 4 | |
0171be2d | 5 | Release Notes |
72c7bd79 | 6 | |
0171be2d | 7 | NEW FEATURES |
16449d9c | 8 | |
adbef119 DH |
9 | ISC DHCP 4.2.x includes features that were not included in DHCP 4.1.x. |
10 | These include: | |
37ec5845 | 11 | |
98bf1607 | 12 | Processing the DHCP to DNS server transactions in an asyncrhonous fashion. |
09afca0d | 13 | The DHCP server or client can now continue with its processing while |
98bf1607 SR |
14 | awaiting replies from the DNS server. |
15 | ||
01a54c17 EH |
16 | There are a number of DHCPv6 limitations and features missing in this |
17 | release, which will be addressed in the future: | |
98bd7ca0 | 18 | |
01a54c17 | 19 | - Only Solaris, Linux, FreeBSD, NetBSD, and OpenBSD are supported. |
3a16098f | 20 | |
adbef119 DH |
21 | - DHCPv6 includes human-readable text in status code messages, in |
22 | English. A method to reconfigure or support other languages would | |
23 | be preferrable. | |
98bd7ca0 DH |
24 | |
25 | - The "host-identifier" option is limited to a simple token. | |
26 | ||
98bd7ca0 | 27 | - The client and server can only operate DHCPv4 or DHCPv6 at a time, |
45d545f0 | 28 | not both. To use both protocols simultaneously, two instances of the |
6de1f33e | 29 | relevant daemon are required, one with the '-6' command line option. |
4ff4053b | 30 | |
01a54c17 EH |
31 | For information on how to install, configure and run this software, as |
32 | well as how to find documentation and report bugs, please consult the | |
33 | README file. | |
ca4606b5 | 34 | |
01a54c17 EH |
35 | ISC DHCP uses standard GNU configure for installation. Please review the |
36 | output of "./configure --help" to see what options are available. | |
fe5b0fdd | 37 | |
01a54c17 EH |
38 | The system has only been tested on Linux, FreeBSD, and Solaris, and may not |
39 | work on other platforms. Please report any problems and suggested fixes to | |
40 | <dhcp-users@isc.org>. | |
98bd7ca0 | 41 | |
6980ae03 | 42 | Changes since 4.2.0 (new features) |
51b8a8a0 SR |
43 | |
44 | - If a client renews before 'dhcp-cache-threshold' percent of its lease | |
45 | has elapsed (default 25%), the server will reuse the allocated lease | |
46 | (provide a lease within the currently allocated lease-time) rather | |
47 | than extend or renew the lease. This absolves the server of needing | |
48 | to perform an fsync() operation on the lease database before reply, | |
49 | which improves performance. [ISC-Bugs #22228] | |
8cd88e20 SR |
50 | Update this patch to support asynchronous DDNS. If the server is |
51 | attempting to do DDNS on a lease it should be udpated and written to | |
52 | disk even if that wouldn't be necessary due to the thresholding | |
53 | [ISC-Bugs #26311] | |
51b8a8a0 | 54 | |
6980ae03 SR |
55 | - The 'no available billing' log line now also logs the name of the last |
56 | matching billing class tried before failing to provide a billing. | |
57 | [ISC-Bugs #21759] | |
58 | ||
32e651c4 SR |
59 | - A problem with missing get_hw_addr function when --enable-use-sockets |
60 | was used is now solved on GNU/Linux, BSD and GNU/Hurd systems. Note | |
61 | that use-sockets feature was not tested on those systems. Client and | |
62 | server code no longer use MAX_PATH constant that is not defined on | |
3cb6f9bb | 63 | GNU/Hurd systems. [ISC-Bugs #25979] |
32e651c4 | 64 | |
67418698 SR |
65 | - Add a perl script in the contrib directory, dhcp-lease-list.pl, which |
66 | can parse v4 lease files and output the lease information in a more | |
67 | human friendly manner. This was written by Christian Hammers with | |
68 | some updates by vom and ISC. This is contributed code and is not | |
69 | supported by ISC; however it may be useful to some users. | |
70 | [ISC-Bugs #20680] | |
71 | ||
a7341359 SR |
72 | - Add support in v6 for on-commit, on-expire and on-release. |
73 | [ISC-Bugs #27912 | |
74 | ||
01fa619f SR |
75 | - Add support for using classes with v6. |
76 | [ISC-Bugs #26510] | |
77 | ||
d7d9c0c7 SR |
78 | - Update the DDNS code to current standards and allow for sharing |
79 | of DDNS entries between v4 and v6 clients. The new code is used | |
80 | if the ddns-update-style is set to "standard", the older code is | |
81 | still available if ddns-update-style is set to "interim". The | |
82 | oldest DDNS code "ad-hoc" has been removed. Thanks to Thomas Pegeot | |
83 | who submitted a patch for this issue. This patch is based on | |
84 | that work with some modifications. | |
64fb661c | 85 | [ISC-Bugs #21139] |
1534fff7 | 86 | |
cde11a4c SR |
87 | - Add a configuration option to the server to suppress using fsync(). |
88 | Enabling this option will mean that fsync() is never called. This | |
89 | may provide better performance but there is also a risk that a lease | |
90 | will not be properly written to the disk after it has been issued | |
91 | to a client and before the server stops. Using this option is | |
92 | not recommended. | |
64fb661c | 93 | [ISC-Bugs #34810] |
cde11a4c | 94 | |
f88446f1 SR |
95 | - Add some logging statements to indicate when the server is ready |
96 | to serve. One statement is emitted after the server has finished | |
97 | reading its files and is about to enter the dispatch loop. | |
98 | This is "Server starting service.". | |
99 | The second is emitted when a server determines that both it and | |
100 | its failover peer are in the normal state. | |
101 | This is "failover peer <name>: Both servers normal." | |
64fb661c | 102 | [ISC-Bugs #33208] |
f88446f1 | 103 | |
619304cd SR |
104 | - Add support for accessing options from v6 relays. The v6relay |
105 | statement allows the administrator to choose which relay to | |
106 | use when searching for an option, see the dhcp-options man page | |
107 | for a description. The host-identifer option has also been | |
108 | updated to support the use of relay options see the dhcpd.conf | |
109 | man page for a description. | |
110 | [ISC-Bugs #19598] | |
111 | ||
e54ff84f SR |
112 | - When doing DDNS if there isn't an appropriate zone statement attempt |
113 | to find a reasoanble nameserver via a DNS resolver. This restores | |
114 | some functionality that was lost in the transition to asynchronous | |
115 | DDNS. Due to the lack of security and increase in fragility of the | |
116 | system when using this feature we strongly recommend the use of | |
117 | appropriate zone statements rather than using this functionality. | |
118 | [ISC-Bugs #30461] | |
119 | ||
61ef216b SR |
120 | - Add support for specifying the address from which to send |
121 | DDNS updates on the DHCP server. There are two new options | |
122 | "ddns-local-address4" and "ddns-local-address6" that each take | |
123 | one instance of their respective address types. | |
124 | [ISC-Bugs #34779] | |
4d079f0e | 125 | |
38ee81bd SR |
126 | - Add ignore-client-uids option in the server. This option causes |
127 | the server to not record a client's uid in its lease. This | |
128 | violates the specification but may also be useful when a client | |
129 | can dual boot using different client ids but the same mac address. | |
08e6dad9 | 130 | Thank you to Brian De Wolf at Cal Ply Pomona for the patch. |
38ee81bd SR |
131 | [ISC-Bugs #32427] |
132 | [ISC-Bugs #35066] | |
4d079f0e SR |
133 | |
134 | - Extend the DHCPINFORM processing to honor the subnet selection option | |
135 | and take host declarations into account. | |
136 | Thanks to Christof Chen for testing and submitting the patch. | |
137 | [ISC-Bugs #35015] | |
138 | ||
fe2ac9e3 SR |
139 | - Extend the hardware expression to look into the lease structure |
140 | for a hardware address if there is no packet. This allows the | |
141 | server to find the hardware address during on-expiry processing. | |
142 | [ISC-Bugs #24584] | |
61ef216b | 143 | |
c5bc8b1a SR |
144 | Changes since 4.2.5 |
145 | ||
d0a10f6a | 146 | - Address static analysis warnings. |
9626483b | 147 | [ISC-Bugs #33510] [ISC-Bugs #33511] |
d0a10f6a | 148 | |
dc9d7b08 MA |
149 | - Silence benign static analysis warnings. |
150 | [ISC-Bugs #33428] | |
151 | ||
c5bc8b1a | 152 | - Add check for 64-bit package for atf. |
a24b9f23 MA |
153 | [ISC-Bugs #32206] |
154 | ||
155 | - Use newer auto* tool packages and turn on RFC_3542 support on Mac OS. | |
156 | [ISC-Bugs #26303] | |
c5bc8b1a | 157 | |
cc17cbc3 SR |
158 | - Remove a variable when it isn't being used due to #ifdefs to avoid |
159 | a compiler warning on Solaris using GCC. | |
160 | [ISC-Bugs #33032] | |
161 | ||
360cc6d9 SR |
162 | - Add a check for too much whitespace in a config or lease file. |
163 | Thanks to Paolo Pellegrino for finding the issue and a suggestion | |
164 | for the patch. | |
165 | [ISC-Bugs #33351] | |
08b2d347 SR |
166 | |
167 | - Fix several problems with using OMAPI to manipulate class and subclass | |
168 | objects. | |
169 | [ISC-Bugs #27452] | |
170 | ||
ad4001ce SR |
171 | - Added a sleep call after killing the old client to allow time |
172 | for the sockets to be cleaned. This should allow the -r option | |
173 | to work more consistently. | |
174 | [ISC-Bugs #18175] | |
175 | ||
3cb6f9bb SR |
176 | - Missing files for ISC DHCP Developer's Guide are now included in |
177 | the release tarballs. To generate this documentation, please use | |
178 | make devel command in doc directory. [ISC-Bugs #32767] | |
179 | ||
f6dc164f SR |
180 | - Update client script for use with openwrt. |
181 | [ISC-Bugs #29843] | |
182 | ||
4b8251a0 SR |
183 | - Fix the socket handling for DHCPv6 clients to allow multiple instances |
184 | of a client on a single machine to work properly. Previously only | |
185 | one client would receive the packets. Thanks to Jiri Popelka at Red Hat | |
186 | for the bug report and a potential patch. | |
187 | [ISC-Bugs #34784] | |
188 | ||
47e8308d | 189 | - Added support for gentle shutdown after signal is received. |
0895c955 | 190 | [ISC-Bugs #32692] [ISC-Bugs 34945] |
47e8308d | 191 | |
d9b5c150 SR |
192 | - Enhance the DHCPv6 server logging to include the addresses that are assigned |
193 | to the clients. | |
194 | [ISC-Bugs #26377] | |
195 | ||
08e6dad9 SR |
196 | - Fix an operation in the DDDNS code to be a bitwise instead of logcial or. |
197 | [ISC-Bugs #35138] | |
198 | ||
9f9265b6 SR |
199 | Changes since 4.2.4 |
200 | ||
201 | - Correct code to calculate timing values in client to compare | |
202 | rebind value to infinity instead of renew value. | |
203 | Thanks to Chenda Huang from H3C Technologies Co., Limited | |
204 | for reporting this issue. | |
205 | [ISC-Bugs #29062] | |
206 | ||
35de6c8c SR |
207 | - Fix some issues in the code for parsing and printing options. |
208 | [ISC-Bugs #22625] - properly print options that have several fields | |
209 | followed by an array of something for example "fIa" | |
210 | [ISC-Bugs #27289] - properly parse options in declarations that have | |
211 | several fields followed by an array of something for example "fIa" | |
212 | [ISC-Bugs #27296] - properly determine if we parsed a 16 or 32 bit | |
213 | value in evaluate_numeric_expression (extract-int). | |
214 | [ISC-Bugs #27314] - properly parse a zero length option from | |
215 | a lease file. Thanks to Marius Tomaschewski from SUSE for the report | |
216 | and prototype patch for this ticket as well as ticket 27289. | |
217 | ||
de87ffe3 SR |
218 | ! Previously the server code was relaxed to allow packets with zero |
219 | length client ids to be processed. Under some situations use of | |
220 | zero length client ids can cause the server to go into an infinite | |
221 | loop. As such ids are not valid according to RFC 2132 section 9.14 | |
222 | the server no longer accepts them. Client ids with a length of 1 | |
223 | are also invalid but the server still accepts them in order to | |
224 | minimize disruption. The restriction will likely be tightened in | |
225 | the future to disallow ids with a length of 1. | |
226 | Thanks to Markus Hietava of Codenomicon CROSS project for the | |
227 | finding this issue and CERT-FI for vulnerability coordination. | |
228 | [ISC-Bugs #29851] | |
229 | CVE: CVE-2012-3571 | |
230 | ||
e563ec2e SR |
231 | ! When attempting to convert a DUID from a client id option |
232 | into a hardware address handle unexpected client ids properly. | |
233 | Thanks to Markus Hietava of Codenomicon CROSS project for the | |
234 | finding this issue and CERT-FI for vulnerability coordination. | |
235 | [ISC-Bugs #29852] | |
236 | CVE: CVE-2012-3570 | |
237 | ||
3bedb117 SR |
238 | ! A pair of memory leaks were found and fixed. Thanks to |
239 | Glen Eustace of Massey University, New Zealand for finding | |
240 | this issue. | |
241 | [ISC-Bugs #30024] | |
df2c355e | 242 | CVE: CVE-2012-3954 |
3bedb117 | 243 | |
18a28679 TM |
244 | - Existing legacy unit-tests have been migrated to Automated Test |
245 | Framework (ATF). Several new tests have been developed. To enable | |
246 | unit-tests, please use --with-atf in configure script. A Developer's | |
247 | Guide has been added. To generate it, please use make devel in | |
248 | the doc directory. It is currently in early stages of development, | |
249 | but is expected to grow in the near future. [ISC-Bugs 25901] | |
250 | ||
0b2ec8c9 | 251 | ! An issue with the use of lease times was found and fixed. Making |
03b44855 | 252 | certain changes to the end time of an IPv6 lease could cause the |
0b2ec8c9 SR |
253 | server to abort. Thanks to Glen Eustace of Massey University, |
254 | New Zealand for finding this issue. | |
255 | [ISC-Bugs #30281] | |
256 | CVE: CVE-2012-3955 | |
257 | ||
67b2cb45 SR |
258 | - Update the memory leakage debug code to work with v6. |
259 | [ISC-Bugs #30297] | |
260 | ||
74977c94 SR |
261 | - Relax the requirements for deleting an A or AAAA record. |
262 | Previously the DDNS removal code required both the A or AAAA | |
263 | record and the TXT record to exist. This requirement could | |
264 | cause problems if something interrupted the removal leaving | |
265 | the TXT record alone. This relaxation was codified in RFC 4703. | |
266 | [ISC-Bugs #30734] | |
267 | ||
30e42327 SR |
268 | - Modify the failover code to handle incorrect peer names |
269 | better. Previously the structure holding the name might | |
270 | have been freed inappropriately in some cases and not | |
271 | freed in other cases. | |
272 | [ISC-Bugs #30320] | |
273 | ||
d5d868e7 | 274 | - Add a configure option, enable-secs-byteorder, to deal with |
dbd65517 SR |
275 | clients that do the byte ordering on the secs field incorrectly. |
276 | This field should be in network byte order but some clients | |
277 | get it wrong. When this option is enabled the server will examine | |
278 | the secs field and if it looks wrong (high byte non zero and low | |
279 | byte zero) swap the bytes. The default is disabled. This option | |
280 | is only useful when doing load balancing within failover. | |
281 | [ISC-Bugs #26108] | |
282 | ||
0f750c4f SR |
283 | - Fix a set of issues that were discovered via a code inspection |
284 | tool. Thanks to Jiri Popelka and Tomas Hozza Red Hat for the logs | |
285 | and patches. | |
286 | [ISC-Bugs #23833] | |
287 | ||
962d5eab SR |
288 | - Parsing unquoted base64 strings improved. Parser now properly handles |
289 | strings that contain reserved names. [ISC-Bugs #23048] | |
290 | ||
d56788df SR |
291 | - Modify the nak_lease function to make some attempts to find a |
292 | server-identifier option to use for the NAK. | |
293 | [ISC-Bugs #25689] | |
294 | ||
10613724 SR |
295 | - The client now passes information about the options it requested |
296 | from the server to the script code via environment variables. | |
297 | These variables are of the form requested_<option_name>=1 with | |
298 | the option name being the same as used in the new_* and old_* | |
299 | variables. | |
3aa562f8 | 300 | [ISC-Bugs #29068] |
10613724 | 301 | |
f8380d3f SR |
302 | - Add support for a simple check that the server id in a request message |
303 | to a failover peer matches the server id of the server. This support | |
304 | is enabled by editing the file includes/site.h and uncommenting the | |
305 | definition for SERVER_ID_CHECK. The option has several restrictions | |
306 | and issues - please read the comment in the site.h file before | |
307 | enabling it. | |
308 | [ISC-Bugs #31463] | |
309 | ||
d5d868e7 | 310 | - Tidy up some compiler issues in the debug code. |
0d93c339 SR |
311 | [ISC-Bugs #26460] |
312 | ||
9ff4e0a2 SR |
313 | - Move the dhcpd.conf exmample file to dhcpd.conf.example to avoid |
314 | overwriting the dhcpd.conf file when installing a new version of | |
315 | ISC DHCP. The user will now need to manual copy and edit the | |
316 | dhcpd.conf file as desired. | |
317 | [ISC-Bugs #19337] | |
318 | ||
1e2a127b SR |
319 | - Check the status value when trying to read from a connection to |
320 | see if it may have been closed. If it appears closed don't try | |
321 | to read from it again. This avoids a potential busy-wait like | |
322 | loop when the peer names are mismatched. | |
323 | [ISC-Bugs #31231] | |
324 | ||
d5d868e7 | 325 | - Remove an unused variable to keep compilers happy. |
8acc987b SR |
326 | [ISC-Bugs #31983] |
327 | ||
b89b8e16 SR |
328 | - Modify test makefiles to be more similar to standard makefiles |
329 | and comment out a currently unused test. | |
56c0e681 | 330 | [ISC-Bugs #32089] |
b89b8e16 | 331 | |
b95f1ee0 SR |
332 | Changes since 4.2.3 |
333 | ||
334 | ! Add a check for a null pointer before calling the regexec function. | |
dc6908b4 | 335 | Without this check we could, under some circumstances, pass |
b95f1ee0 | 336 | a null pointer to the regexec function causing it to segfault. |
317d1182 | 337 | Thanks to a report from BlueCat Networks. |
b95f1ee0 | 338 | [ISC-Bugs #26704]. |
846af1cd | 339 | CVE: CVE-2011-4539 |
b95f1ee0 | 340 | |
0ef9a46e SR |
341 | ! Modify the DDNS handling code. In a previous patch we added logging |
342 | code to the DDNS handling. This code included a bug that caused it | |
343 | to attempt to dereference a NULL pointer and eventually segfault. | |
344 | While reviewing the code as we addressed this problem, we determined | |
345 | that some of the updates to the lease structures would not work as | |
346 | planned since the structures being updated were in the process of | |
347 | being freed: these updates were removed. In addition we removed an | |
348 | incorrect call to the DDNS removal function that could cause a failure | |
349 | during the removal of DDNS information from the DNS server. | |
350 | Thanks to Jasper Jongmans for reporting this issue. | |
351 | [ISC-Bugs #27078] | |
352 | CVE: CVE-2011-4868 | |
353 | ||
de6c9af6 SR |
354 | - Fixed the code that checks if an address the server is planning |
355 | to hand out is in a reserved range. This would appear as | |
356 | the server being out of addresses in pools with particular ranges. | |
357 | [ISC-Bugs #26498] | |
358 | ||
87132514 SR |
359 | - In the DDNS code handle error conditions more gracefully and add more |
360 | logging code. The major change is to handle unexpected cancel events | |
361 | from the DNS client code. | |
cfc49463 | 362 | [ISC-Bugs #26287] |
87132514 | 363 | |
cfc49463 | 364 | - Tidy up the receive calls and eliminate the need for found_pkt. |
865afd5e SR |
365 | [ISC-Bugs #25066] |
366 | ||
b047bd38 SR |
367 | - Add support for Infiniband over sockets to the server and |
368 | relay code. We've tested this on Solaris and hope to expand | |
369 | support for Infiniband in the future. This patch also corrects | |
53394a8d SR |
370 | some issues we found in the socket code. |
371 | [ISC-Bugs #24245] | |
b047bd38 | 372 | |
e3c94800 SR |
373 | - Add a compile time check for the presence of the noreturn attribute |
374 | and use it for log_fatal if it's available. This will help code | |
375 | checking programs to eliminate false positives. | |
d13db163 | 376 | [ISC-Bugs #27539] |
e3c94800 | 377 | |
dd9237c3 TM |
378 | - Fixed many compilation problems ("set, but not used" warnings) for |
379 | gcc 4.6 that may affect Ubuntu 11.10 users. [ISC-Bugs #27588] | |
380 | ||
d13db163 SR |
381 | - Modify the code that determines if an outstanding DDNS request |
382 | should be cancelled. This patch results in cancelling the | |
383 | outstanding request less often. It fixes the problem caused | |
cfc49463 | 384 | by a client doing a release where the TXT and PTR records |
d13db163 SR |
385 | weren't removed from the DNS. |
386 | [ISC-BUGS #27858] | |
387 | ||
b342f2e7 SR |
388 | - Use offsetof() instead of sizeof() to get the sizes for dhcpv6_relay_packet |
389 | and dhcpv6_packet in several more places. Thanks to a report from | |
390 | Bruno Verstuyft and Vincent Demaertelaere of Excentis. | |
391 | [ISC-Bugs #27941] | |
392 | ||
cfc49463 SR |
393 | - Remove outdated note in the description of the bootp keyword about the |
394 | option not satisfying the requirement of failover peers for denying | |
395 | dynamic bootp clients. | |
797aab67 SR |
396 | [ISC-bugs #28574] |
397 | ||
bc7f8b8e SR |
398 | - Multiple items to clean up IPv6 address processing. |
399 | When processing an IA that we've seen check to see if the | |
400 | addresses are usable (not in use by somebody else) before | |
401 | handing it out. | |
402 | When reading in leases from the file discard expired addresses. | |
403 | When picking an address for a client include the IA ID in | |
404 | addition to the client ID to generally pick different addresses | |
405 | for different IAs. | |
406 | [ISC-Bugs #23138] [ISC-Bugs #27945] [ISC-Bugs #25586] | |
407 | [ISC-Bugs #27684] | |
408 | ||
d289ee68 SR |
409 | - Remove unnecessary checks in the lease query code and clean up |
410 | several compiler issues (some dereferences of NULL and treating | |
411 | an int as a boolean). | |
412 | [ISC-Bugs #26203] | |
413 | ||
d19fa5a1 SR |
414 | - Fix the NA and PD allocation code to handle the case where a client |
415 | provides a preference and the server doesn't have any addresses or | |
cfc49463 SR |
416 | prefixes available. Previously the server ignored the request with |
417 | this patch it replies with a NoAddrsAvail or NoPrefixAvail response. | |
d19fa5a1 | 418 | By default the code performs according to the errata of August 2010 |
53394a8d | 419 | for RFC 3315 section 17.2.2; to enable the previous style see the |
cfc49463 | 420 | section on RFC3315_PRE_ERRATA_2010_08 in includes/site.h. This option |
d19fa5a1 SR |
421 | may be removed in the future. |
422 | Thanks to Jiri Popelka at Red Hat for the patch. | |
423 | [ISC-Bugs #22676] | |
424 | ||
cfc49463 | 425 | - Fix up some issues found by static analysis. |
bb9189c3 SR |
426 | A potential memory leak and NULL dereference in omapi. |
427 | The use of a boolean test instead of a bitwise test in dst. | |
428 | [ISC-Bugs #28941] | |
429 | ||
cbbd2714 SR |
430 | - Rotate the lease file when running in v6 mode. |
431 | Thanks to Christoph Moench-Tegeder at Astaro for the | |
432 | report and the first version of the patch. | |
433 | [ISC-Bugs #24887] | |
434 | ||
d208bb04 SR |
435 | Changes since 4.2.2 |
436 | ||
437 | - Fix the code that checks for an existing DDNS transaction to cancel | |
438 | when removing DDNS information, so that we will continue with the | |
439 | processing if we have a lease even if it doesn't have an outstanding | |
440 | transaction. [ISC-Bugs #24682] | |
441 | ||
25f664a6 SR |
442 | - Add AM_MAINTAINER_MODE to configure.ac to avoid rebuilding |
443 | configuration files. [ISC-Bugs #24107] | |
444 | ||
d424157d SR |
445 | - Add support for passing DDNS information to a DNS server over |
446 | an IPv6 address. [ISC-Bugs #22647] | |
447 | ||
3221151b SR |
448 | - Enhanced patch for 23595 to handle IPv4 fixed addresses more |
449 | cleanly. [ISC-Bugs #23595] | |
450 | ||
bea17697 SR |
451 | Changes since 4.2.1 |
452 | ||
453 | ! In dhclient check the data for some string options for | |
454 | reasonableness before passing it along to the script that | |
455 | interfaces with the OS. | |
456 | [ISC-Bugs #23722] | |
457 | CVE: CVE-2011-0997 | |
c7aa4dd4 TM |
458 | |
459 | - DHCPv6 server now responds properly if client asks for a prefix that | |
460 | is already assigned to a different client. [ISC-Bugs #23948] | |
4a5bfeac SR |
461 | |
462 | - Add the option "--no-pid" to the client, relay and server code, | |
463 | to disable writing a pid file. Add the option "-pf pidfile" | |
464 | to the relay to allow the user to supply the pidfile name at | |
465 | runtime. Add the "with-relay6-pid-file" option to configure | |
466 | to allow the user to supply the pidfile name for the relay | |
467 | in v6 mode at configure time. | |
468 | [ISC-Bugs #23351] [ISC-Bugs #17541] | |
5d082abd TM |
469 | |
470 | - 'dhclient' no longer waits a random interval after first starting up to | |
471 | begin in the INIT state. This conforms to RFC 2131, but elects not to | |
472 | implement a 'SHOULD' direction in section 4.1. The goal of this change | |
73c83820 | 473 | is to start up faster. [ISC-Bugs #19660] |
5d082abd TM |
474 | |
475 | - Added 'initial-delay' parameter that specifies maximum amount of time | |
476 | before client goes to the INIT state. The default value is 0. In previous | |
477 | versions of the code client could wait up to 5 seconds. The old behavior | |
478 | may be restored by using 'initial-delay 5;' in the client config file. | |
73c83820 | 479 | [ISC-Bugs #19660] |
5d082abd TM |
480 | |
481 | - ICMP ping-check should now sit closer to precisely the number of seconds | |
482 | configured (or default 1), due to making use of the new microsecond | |
483 | scale timer internally to dhcpd. This corrects a bug where the server | |
484 | may immediately timeout an ICMP ping-check if it was made late in the | |
73c83820 | 485 | current second. [ISC-Bugs #19660] |
5d082abd TM |
486 | |
487 | - The DHCP client will schedule renewal and rebinding events in | |
488 | microseconds if the DHCP server provided a lease-time that would result | |
489 | in sub-1-second timers. This corrects a bug where a 2-second or lower | |
490 | lease-time would cause the DHCP client to enter an infinite loop by | |
73c83820 | 491 | scheduling renewal at zero seconds. [ISC-Bugs #19660] |
5d082abd TM |
492 | |
493 | - Client lease records are recorded at most once every 15 seconds. This | |
494 | keeps the client from filling the lease database disk quickly on very small | |
73c83820 | 495 | lease times. [ISC-Bugs #19660] |
5d082abd TM |
496 | |
497 | - To defend against RFC 2131 non-compliant DHCP servers which fail to | |
498 | advertise a lease-time (either mangled, or zero in value) the DHCP | |
499 | client now adds the server to the reject list ACL and returns to INIT | |
500 | state to hopefully find an RFC 2131 compliant server (or retry in INIT | |
73c83820 | 501 | forever). [ISC-Bugs #19660] |
023fbaa0 TM |
502 | |
503 | - Parameters configured to evaluate from user defined function calls can | |
504 | now be correctly written to dhcpd.leases (as on 'on events' or dynamic | |
505 | host records inserted via OMAPI). [ISC-Bugs #22266] | |
506 | ||
507 | - If a 'next-server' parameter is configured in a dynamic host record via | |
508 | OMAPI as a domain name, the syntax written to disk is now correctly parsed | |
509 | upon restart. [ISC-Bugs #22266] | |
656b1ece TM |
510 | |
511 | - The DHCP server now responds to DHCPLEASEQUERY messages from agents using | |
512 | IP addresses not covered by a subnet in configuration. Whether or not to | |
513 | respond to such an agent is still governed by the 'allow leasequery;' | |
514 | configuration parameter, in the case of an agent not covered by a configured | |
515 | subnet the root configuration area is examined. Server now also returns | |
516 | vendor-class-id option, if client sent it. [ISC-Bugs #21094] | |
bea17697 | 517 | |
fc06ee4f SR |
518 | - Documentation fixes |
519 | [ISC-Bugs #17959] add text to AIX section describing how to have it send | |
520 | responses to the all-ones address. | |
521 | [ISC-Bugs #19615] update the includes in dhcpctl/dhcpctl.3 to be more correct | |
522 | [ISC-Bugs #20676] update dhcpd.conf.5 to include the RFC numbers for DDNS | |
523 | ||
1185c766 TM |
524 | - Relay no longer crashes, when DHCP packet is received over interface without |
525 | any IPv4 address assigned. Also extended logging message about discarding | |
526 | packets with invalid hlen with information about relevant interface name. | |
527 | [ISC-Bugs #22409] | |
528 | ||
c6455252 TM |
529 | - Relay now properly logs that packet was received over interface without |
530 | global IPv6 address [ISC-Bugs #24070] | |
531 | ||
9369bdc1 TM |
532 | - Linux Packet Filter interface improvement. sockaddr_pkt structure is used, |
533 | rather than sockaddr. Packet ethertype is now forced to ETH_P_IP. | |
534 | [ISC-Bugs #18975] | |
535 | ||
fb30f3fc SR |
536 | - Minor code cleanups - but note port change for #23196 |
537 | [ISC-Bugs #23470] - Modify when an ignore return macro is defined to | |
538 | handle unsed error return warnings for more versions of gcc. | |
539 | [ISC-Bugs #23196] - Modify the reply handling in the server code to | |
540 | send to a specified port rather than to the source port for the incoming | |
541 | message. Sending to the source port was test code that should have | |
542 | been removed. The previous functionality may be restored by defining | |
543 | REPLY_TO_SOURCE_PORT in the includes/site.h file. We suggest you don't | |
544 | enable this except for testing purposes. | |
545 | [ISC-Bugs #22695] - Close a file descriptor in an error path. | |
546 | [ISC-Bugs #19368] - Tidy up variable types in validate_port. | |
547 | ||
c616de4f TM |
548 | - Code cleanup: remove obsolete PROTO, KandR, INLINE and ANSI_DECL macros |
549 | [ISC-Bugs #13151] | |
550 | ||
551 | - Compilation problem with gcc4.5 and omshell.c resolved. [ISC-Bugs #23831] | |
a34feb7d | 552 | |
4f55e11b SR |
553 | - Client Script fixes |
554 | [ISC-Bugs #23045] Typos in client/scripts/openbsd | |
555 | [ISC-Bugs #23565] In the client scripts add a zone id (interface id) if | |
556 | the domain search address is link local. | |
557 | [ISC-Bugs #1277] In some of the client scripts add code to handle the | |
558 | case of the default router information being changed without the address | |
559 | being changed. | |
560 | ||
802fdea1 TM |
561 | - Documentation cleanup |
562 | [ISC-Bugs #23326] Updated References document, several man page updates | |
563 | ||
1b601efa TM |
564 | - Server no longer complains about NULL pointer when configured |
565 | server-identifier expression fails to evaluate. [ISC-Bugs #24547] | |
566 | ||
199f0b8a SR |
567 | - Convert ISC_R_INPROGRESS status to ISC_R_SUCCESS when called from other |
568 | than the dispatch handler. This fixes an issue where omshell, when | |
569 | run from the same platform as the server, would appear to fail to | |
570 | connect. This is a companion to #21839. [ISC-Bugs #23592] | |
571 | ||
786f2e79 SR |
572 | - Enlarge the buffer size used by the Omshell code and some of the |
573 | print routines to allow for greater than 60 characters or, when | |
574 | printing as hex strings, 20 characters. [ISC-Bugs #22743] | |
575 | ||
7cfeb916 SR |
576 | - In Solaris 11 switch to using sockets instead of DLPI, thanks |
577 | to a patch form Oracle. [ISC-Bugs #24634]. | |
578 | ||
d15aa964 TM |
579 | - Strict checks for content of domain-name DHCPv4 option can now be |
580 | configured during compilation time. Even though RFC2132 does not allow | |
581 | to store more than one domain in domain-name option, such behavior is | |
582 | now enabled by default, but this may change some time in the future. | |
583 | See ACCEPT_LIST_IN_DOMAIN_NAME define in includes/site.h. | |
584 | [ISC-Bugs #24167] | |
585 | ||
beaed73f SR |
586 | - DNS Update fix. A misconfigured server could crash during DNS update |
587 | processing if the configuration included overlapping pools or | |
588 | multiple fixed-address entries for a single address. This issue | |
589 | affected both IPv4 and IPv6. The fix allows a server to detect such | |
590 | conditions, provides the user with extra information and recommended | |
591 | steps to fix the problem. If the user enables the appropriate option | |
592 | in site.h then server will be terminated | |
593 | [ISC-Bugs #23595] | |
594 | ||
8bd96ccb SR |
595 | ! Two packets were found that cause a server to halt. The code |
596 | has been updated to properly process or reject the packets as | |
597 | appropriate. Thanks to David Zych at University of Illinois | |
598 | for reporting this issue. [ISC-Bugs #24960] | |
599 | One CVE number for each class of packet. | |
600 | CVE-2011-2748 | |
601 | CVE-2011-2749 | |
602 | ||
5a38e43f SR |
603 | Changes since 4.2.0 |
604 | ||
605 | - Documentation cleanup covering multiple tickets | |
606 | [ISC-Bugs #20265] [ISC-Bugs #20259] minor cleanup | |
607 | [ISC-Bugs #20263] add text describing some default values | |
608 | [ISC-Bugs #20193] single quotes at the start of a line indicate a control | |
609 | line to nroff, escape them if we actually want a quote. | |
610 | [ISC-Bugs #18916] sync the pointer to web pages amongst the different docs | |
611 | ||
524705e5 DH |
612 | - 'get-host-names true;' now also works even if 'use-host-decl-names true;' |
613 | was also configured. The nature of this repair also fixes another | |
614 | error; the host-name supplied by a client is no longer overridden by a | |
615 | reverse lookup of the lease address. Thanks to a patch from Wilco Baan | |
616 | Hofman supplied to us by the Debian package maintenance team. | |
617 | [ISC-Bugs #21691] {Debian Bug#509445} | |
618 | ||
f07d0fb5 DH |
619 | - The .TH tag for the dhcp-options manpage was typo repaired |
620 | thanks to a report from jidanni and the Debian package maintenance | |
621 | team. [ISC-Bugs #21676] {Debian Bug#563613} | |
622 | ||
d6645f56 SR |
623 | - More documentation changes - primarily to put the options in the dhclient |
624 | and dhcpd man pages into the standard form. Thanks in part to a patch | |
625 | from David Cantrell at Red Hat. | |
626 | [ISC-Bugs #20264] and parts of [ISC-Bugs #17744] dhclient.8 changes | |
627 | ||
4a5098e9 SR |
628 | - Add code to clear the pointer to an object in an OMAPI handle when the |
629 | object is freed due to a dereference. [ISC-Bugs #21306] | |
630 | ||
ea75d544 DH |
631 | - Fixed a bug that leaks host record references onto lease structures, |
632 | causing the server to apply configuration intended for one host to any | |
633 | other innocent clients that come along later. [ISC-Bugs #22018] | |
634 | ||
66be0ad1 SR |
635 | - Minor code fixes |
636 | [ISC-Bugs #19566] When trying to find the zone for a name for ddns allow | |
637 | the name to be at the apex of the zone. | |
638 | [ISC-Bugs #19617] Restrict length of interface name read from command line | |
639 | in dhcpd - based on a patch from David Cantrell at Red Hat. | |
640 | [ISC-Bugs #20039] Correct some error messages in dhcpd.c | |
641 | [ISC-Bugs #20070] Better range check on values when creating a DHCID. | |
642 | [ISC-Bugs #20198] Avoid writing past the end of the field when adding | |
643 | overly long file or server names to a packet and add a log message | |
644 | if the configuration supplied overly long names for these fields. | |
645 | Thanks to Martin Pala. | |
646 | [ISC-Bugs #21497] Add a little more randomness to rng seed in client | |
647 | thanks to a patch from Jeremiah Jinno. | |
648 | ||
57fbc772 SR |
649 | - Correct error handling in DLPI [ISC-Bugs #20378] |
650 | ||
651 | - Remove __sun__ and __hpux__ typedefs in osdep.h as they are now being | |
652 | checked in configure. [ISC-Bugs #20443] | |
653 | ||
654 | - Modify how the cmsg header is allocated the v6 send and received routines | |
655 | to compile on more compilers. [ISC-Bugs #20524] | |
656 | ||
657 | - When parsing a domain name free the memory for the name after we are | |
658 | done with it. [ISC-Bugs #20824] | |
659 | ||
197c917e SR |
660 | - Add an elapsed time option to the release message and refactor the |
661 | code to move most of the common code to a single routine. | |
662 | [ISC-Bugs #21171]. | |
663 | ||
8bd445a1 DH |
664 | - Two identical log messages for commit_leases() have been disambiguated. |
665 | [ISC-Bugs #18915] | |
666 | ||
83d409ae SR |
667 | - Parse date strings more properly - the code now handles semi-colons in |
668 | date strings correctly. Thanks to a patch from Jiri Popelka at Red Hat. | |
669 | [ISC-Bugs #21501, #20598] | |
670 | ||
6aaaf6a4 SR |
671 | - Fixes to lease input and output. |
672 | [ISC-Bugs #20418] - Some systems don't support the "%s" argument to | |
673 | strftime, paste together the same string using mktime instead. | |
674 | [ISC-Bugs #19596] - When parsing iaid values accept printable | |
675 | characters. | |
676 | [ISC-Bugs #21585] - Always print time values in omshell as hex | |
677 | instead of ascii if the values happen to be printable characters. | |
678 | ||
4e0997c6 SR |
679 | - Minor changes for scripts, configure.ac and Makefiles |
680 | [ISC-Bugs #19147] Use domain-search instead of domain-name in manual and | |
681 | example conf file. Thanks to a patch from David Cantrell | |
682 | at Red Hat. | |
683 | [ISC-Bugs #19761] Restore address when doing a rebind in DHCPv6 | |
684 | [ISC-Bugs #19945] Properly close the quote on some arguments. | |
685 | [ISC-Bugs #20952] Add 64 bit types to configure.ac | |
686 | [ISC-Bugs #21308] Add "PATH=" to CLIENT_PATH envrionment variable | |
687 | ||
ad59838e SR |
688 | - Update the code to parse dhcpv6 lease files to accept a semi-colon at |
689 | the end of the max-life and preferred-life clauses. In order to be | |
690 | backwards compatible with older lease files not finding a semi-colon | |
691 | is also accepted. [ISC-Bugs #22303]. | |
692 | ||
4dc5a6b1 SR |
693 | ! Handle a relay forward message with an unspecified address in the |
694 | link address field. Previously such a message would cause the | |
f33dc722 SR |
695 | server to crash. Thanks to a report from John Gibbons. [ISC-Bugs #21992] |
696 | CERT: VU#102047 CVE: CVE-2010-3611 | |
697 | ||
8d50c721 DH |
698 | - ./configure on longer searches for -lcrypto to explicitly link against. |
699 | This fixes a bug where 'dhclient' would have shared library dependencies | |
700 | on '/usr/lib'. [ISC-Bugs #21967] | |
4dc5a6b1 | 701 | |
3004baba SR |
702 | - Handle pipe failures more gracefully. Some OSes pass a SIGPIPE |
703 | signal to a process and will kill the process if the signal isn't | |
704 | caught. This patch adds code to turn off the SIGPIPE signal via | |
705 | a setsockopt() call. The signal is already being ignored as part | |
706 | of the ISC library. [ISC-Bugs #22269] | |
707 | ||
42cbff63 SR |
708 | - Restore printing of values in omshell to the style pre 21585. For |
709 | 21585 we changed the print routines to always display time values | |
39196512 SR |
710 | as a hex list. This had a side effect of printing all data strings |
711 | as a hex list. We shall investigate other ways of displaying time | |
712 | values more usefully. [ISC-Bugs #22626] | |
3004baba | 713 | |
9d97e644 SR |
714 | ! Fix the handling of connection requests on the failover port. |
715 | Previously a connection request from a source that wasn't | |
716 | listed as a failover peer would cause the server to become | |
dbaa902c SR |
717 | non-responsive. Thanks to a report from Brad Bendily, brad@bendily.com. |
718 | [ISC-Bugs #22679] | |
9d97e644 SR |
719 | CERT: VU#159528 CVE: CVE-2010-3616 |
720 | ||
23d39ae2 SR |
721 | - Don't pass the ISC_R_INPROGRESS status to the omapi signal handlers. |
722 | Passing it through to the handlers caused the omshell program to fail | |
723 | to connect to the server. [ISC-Bugs #21839] | |
724 | ||
725 | - Fix the paranthesis in the code to process configuration statements | |
726 | beginning with "auth". The previous arrangement caused | |
727 | "auto-partner-down" to be processed incorrectly. [ISC-Bugs #21854] | |
728 | ||
0c9d3a81 SR |
729 | - Limit the timeout period allowed in the dispatch code to 2^^32-1 seconds. |
730 | Thanks to a report from Jiri Popelka at Red Hat. | |
731 | [ISC-Bugs #22033], [Red Hat Bug #628258] | |
732 | ||
e1a40211 SR |
733 | - When processing the format flags for a given option consume the |
734 | flag indicating an optional value correctly. A symptom of this | |
735 | bug was an infinite loop when trying to parse the slp-service-scope | |
736 | option. Thanks to a patch from Marius Tomaschewski. | |
737 | [ISC-Bugs #22055] | |
738 | ||
e7e17397 SR |
739 | - Disable the use of kqueue in the ISC library. This avoids a problem |
740 | between the fork and socket code that caused the dhcpd process to | |
741 | use all available cpu if the program daemonized itself. | |
742 | [ISC-Bugs #21911] | |
743 | ||
c8b189f1 | 744 | ! When processing a request in the DHCPv6 server code that specifies |
45918d36 | 745 | an address that is tagged as abandoned (meaning we received a |
c8b189f1 SR |
746 | decline request for it previously) don't attempt to move it from |
747 | the inactive to active pool as doing so can result in the server | |
e8f330a1 | 748 | crashing on an assert failure. Also retag the lease as active |
09afca0d | 749 | and reset its timeout value. |
c8b189f1 SR |
750 | [ISC-Bugs #21921] |
751 | ||
ef86959b SR |
752 | - Removed the restriction on using IPv6 addresses in IPv4 mode. This |
753 | allows IPv4 options which contain IPv6 addresses to be specified. For | |
754 | example the 6rd option can be specified and used like this: | |
755 | [ISC-Bugs #23039] | |
756 | ||
757 | option 6rd code 212 = { integer 8, integer 8, | |
758 | ip6-address, array of ip-address }; | |
759 | option 6rd 16 10 2001:: 1.2.3.4, 5.6.7.8; | |
760 | ||
919f1407 SR |
761 | - Handle some DDNS corner cases better. Maintain the DDNS transaction |
762 | information when updating a lease and cancel any existing transactions | |
763 | when removing the ddns information. | |
764 | [ISC-Bugs #23103] | |
765 | ||
8a0d9ca4 SR |
766 | - Some fixes for LDAP |
767 | [ISC-Bugs #21783] - Include lber library when building ldap | |
768 | [ISC-Bugs #22888] - Enable the ldap code when buidling common | |
769 | The above fixes are from Jiri Popelka at Red Hat. | |
770 | ||
17a8f0e2 SR |
771 | - Modify the dlpi code to accept getmsg() returning a positive value. |
772 | [ISC-Bugs #22824] | |
773 | ||
badc999d SR |
774 | Changes since 4.2.0b2 |
775 | ||
776 | - Add declaration for variable in debug code in alloc.c. [ISC-Bugs #21472] | |
0d8c3d6e | 777 | |
1e05d095 SR |
778 | Changes since 4.2.0b1 |
779 | ||
d122accf SR |
780 | - Prohibit including lease time information in a response to a DHCP INFORM. |
781 | [ISC-Bugs #21092] | |
1e05d095 | 782 | |
1943bbf8 SR |
783 | ! Accept a client id of length 0 while hashing. Previously the server would |
784 | exit if it attempted to hash a zero length client id, providing attackers | |
d122accf | 785 | with a simple denial of service attack. [ISC-Bugs #21253] |
63ff896a | 786 | CERT: VU#541921 - CVE: CVE-2010-2156 |
1943bbf8 | 787 | |
8a513c43 DH |
788 | - A memory leak in ddns processing was closed. [ISC-Bugs #21377] |
789 | ||
d122accf SR |
790 | - Modify the exception handling for initial context creation. Previously |
791 | we would try and clean up before exiting. This could present problems | |
792 | when the cleanup required part of the context that wasn't available. It | |
793 | also didn't do much as we exited afterwards anyway. Now we simply log | |
794 | the error and exit. [ISC-Bugs #21093] | |
795 | ||
0d8c3d6e DH |
796 | - A bug was fixed that could cause the DHCPv6 server to advertise/assign a |
797 | previously allocated (active) lease to a client that has changed subnets, | |
798 | despite being on different shared networks. Dynamic prefixes specifically | |
799 | allocated in shared networks also now are not offered if the client has | |
800 | moved. [ISC-Bugs #21152] | |
801 | ||
590298e7 SR |
802 | - Add some debugging output for use with the DDNS code. [ISC-Bugs #20916] |
803 | ||
600ee619 | 804 | - Fix the trace code to handle timing events better and to truncate a file |
2b58b865 SR |
805 | before using instead of overwriting it. [ISC-Bugs #20969] |
806 | ||
807 | - Modify the determination of the default TTL to use for DDNS updates. | |
808 | The user may still configure the ttl via ddns-ttl. The default for | |
809 | both v4 and v6 is now 1/2 the (preferred) lease time with a limit. The | |
810 | previous defaults (1/2 lease time without a limit for v4 and a default | |
811 | value for v6) may be used by defining USE_OLD_DDNS_TTL in site.h | |
812 | [ISC-Bugs #21126] | |
600ee619 | 813 | |
a5c7bf77 DH |
814 | - libisc/libdns is now brought up to version 9.7.1rc1. This corrects |
815 | three reported flaws in ISC DHCP; | |
816 | ||
817 | o DHCP processes (dhcpd, dhclient) fail to start if one of either the | |
818 | IPv4 or IPv6 address families is not present. [ISC-Bugs #21122] | |
819 | ||
820 | o Assertion failure when attempting to cancel a previously running DDNS | |
821 | update. [ISC-Bugs #21133] | |
822 | ||
823 | o Compilation failure of libisc/libdns due to the use of a flexible | |
824 | array member. [ISC-Bugs #21316] | |
825 | ||
0585235c SR |
826 | Changes since 4.2.0a2 |
827 | ||
828 | - Update the fsync code to work with the changes to the DDNS code. It now | |
829 | uses a timer instead of noticing if there are no more packets to process. | |
830 | ||
f4bc8261 SR |
831 | - When constructing the DNS name structure from a text string append |
832 | the root to relative names. This satisfies a requirement in the DNS | |
833 | library that names be absolute instead of relative and prevents DHCP | |
d122accf | 834 | from crashing. [ISC-Bugs #21054] |
f4bc8261 | 835 | |
33692791 DH |
836 | - "The LDAP Patch" that has been circulating for some time, written by |
837 | Brian Masney and S.Kalyanasundraram and maintained for application to | |
838 | the DHCP-4 sources by David Cantrell has been included. Please be | |
839 | advised that these sources were contributed, and do not yet meet the | |
840 | high standards we place on production sources we include by default. | |
841 | As a result, the LDAP features are only included by using a compile-time | |
842 | option which defaults off, and if you enable it you do so under your | |
843 | own recognizance. We will be improving this software over time. | |
844 | [ISC-Bugs #17741] | |
845 | ||
3c941d42 | 846 | Changes since 4.2.0a1 |
928618dd DH |
847 | |
848 | - When using 'ignore client-updates;', the FQDN returned to the client | |
849 | is no longer truncated to one octet. | |
850 | ||
3c941d42 DH |
851 | - Cleaned up an unused hardware address variable in nak_lease(). |
852 | ||
bdd8e747 DH |
853 | - Manpage entries for the ia-pd and ia-prefix options were updated to |
854 | reflect support for prefix delegation. | |
855 | ||
3da71461 SR |
856 | - Cleaned up some compiler warnings |
857 | ||
fdfebedf DH |
858 | - An optimization described in the failover protocol draft is now included, |
859 | which permits a DHCP server operating in communications-interrupted state | |
860 | to 'rewind' a lease to the state most recently transmitted to its peer, | |
861 | greatly increasing a server's endurance in communications-interrupted. | |
862 | This is supported using a new 'rewind state' record on the dhcpd.leases | |
863 | entry for each lease. | |
864 | ||
7aa153b8 SR |
865 | - Fix the trace code which was broken by the changes to the DDNS code. |
866 | ||
adbef119 DH |
867 | Changes since 4.1.0 (new features) |
868 | ||
d340bc24 DH |
869 | - Failover port configuration can now be left to defaults (port 647) as |
870 | described in the -12 revision of the Failover draft (and assigned by | |
4b97eaff | 871 | IANA). Thanks in part to a patch from David Cantrell at Red Hat. |
adbef119 | 872 | |
0829d595 DH |
873 | - If configured, dhclient may now transmit to an anycast MAC address, |
874 | rather than using a broadcast address. Thanks to a patch from David | |
875 | Cantrell at Red Hat. | |
876 | ||
8a3c1e33 PS |
877 | - Added client support for setting interface MTU and metric, thanks to |
878 | Roy "UberLord" Marples <roy@marples.name>. | |
879 | ||
a41d7a25 PS |
880 | - Added client -D option to specify DUID type to send. |
881 | ||
9e3eb22a DH |
882 | - A new failover configuration parameter has been introduced for those |
883 | environments where DHCP servers can be reasonably guaranteed to be | |
884 | "down" when the failover TCP socket is severed, "auto-partner-down". | |
885 | This parameter is not generally safe, and by default is disabled, so | |
886 | please carefully review the documentation of this parameter in the | |
887 | dhcpd.conf(5) manpage before determining to use it yourself. | |
888 | ||
33ea4622 DH |
889 | - Added a configuration function, 'gethostname()', which calls the system |
890 | function of the same name and presents the results as a data expression. | |
891 | This function can be used to incorporate the system level hostname of | |
892 | the system the DHCP software is operating on in responses or queries (such | |
893 | as including a failover partner's hostname in a dhcp message or binding | |
894 | scope, or having a DHCP client send any system hostname in the host-name or | |
895 | FQDN options by default). | |
896 | ||
5a671e87 DH |
897 | - The dhcp-renewal-time and dhcp-rebinding-time options may now be configured |
898 | for DHCPv4 operation and used independently of the dhcp-lease-time | |
899 | calculations. Invalid renew and rebinding times (e.g., greater than the | |
900 | determined lease time) are omitted. | |
901 | ||
98bf1607 | 902 | - Processing the DHCP to DNS server transactions in an asyncrhonous fashion. |
09afca0d | 903 | The DHCP server or client can now continue with its processing while |
98bf1607 | 904 | awaiting replies from the DNS server. |
c900c5b2 DH |
905 | |
906 | - The 'hardware [ethernet|etc] ...;' parameter in host records has been | |
907 | extended to attempt to match DHCPv6 clients by the last octets of a | |
908 | DUID-LL or DUID-LLT provided by the client. | |
909 | ||
59112e84 SR |
910 | Changes since 4.1.0 (bug fixes) |
911 | ||
62f6843d MA |
912 | - Remove infinite loop in token_print_indent_concat(). |
913 | ||
59112e84 SR |
914 | - Validate the argument to the -p option. |
915 | ||
47e6eb82 DH |
916 | - The notorious 'option <unknown> ... larger than buffer' log line, |
917 | which is seen in some malformed DHCP client packets, was modified. | |
918 | It now logs the universe name, and does not log the length values | |
919 | (which are bogus corruption read from the packet anyway). It also | |
920 | carries a hopefully more useful explanation. | |
921 | ||
159c89d7 EH |
922 | - Suppress spurious warnings from configure about --datarootdir |
923 | ||
1aa0fe5e DH |
924 | - A bug was fixed that caused the server not to answer some valid Solicit |
925 | and Request packets, if the dynamic range covering any requested addresses | |
926 | had been deleted from configuration. | |
927 | ||
cd51403d SR |
928 | - Update the code to deal with GCC 4.3. This included two sets of changes. |
929 | The first is to the configuration files to include the use of | |
571c38b0 | 930 | AC_USE_SYSTEM_EXTENSIONS. The second is to deal with return values that |
cd51403d SR |
931 | were being ignored. |
932 | ||
64e1823d DH |
933 | - The db-time-format option was documented in manpages. |
934 | ||
26e59ee9 DH |
935 | - Using reserved leases no longer results in 'lease with binding state |
936 | free not on its queue' error messages, thanks to a patch from Frode | |
937 | Nordahl. | |
938 | ||
70ea9345 PS |
939 | - Fix a build error in dhcrelay, using older versions of gcc with |
940 | dhcpv6 disabled. | |
941 | ||
8d7dca58 | 942 | - Two uninitialized stack structures are now memset to zero, thanks to a |
4b97eaff | 943 | patch from David Cantrell at Red Hat. |
819186b7 | 944 | |
f4534b17 DH |
945 | - Fixed a cosmetic bug where pretty-printing valid domain-search options would |
946 | result in an erroneous error log message ('garbage in format string'). | |
947 | ||
f9453d21 DH |
948 | - A bug in DLPI packet transmission (Solaris, HP/UX) that caused the server |
949 | to stop receiving packets is fixed. The same fix also means that the MAC | |
950 | address will no longer appear 'bogus' on DLPI-based systems. | |
951 | ||
952 | - A bug in select handling was discovered where the results of one select() | |
953 | call were discarded, causing the server to process the next select() call | |
954 | and use more system calls than required. This has been repaired - the | |
955 | sockets will be handled after the first return from select(), resulting in | |
956 | fewer system calls. | |
957 | ||
a3dcc0b1 DH |
958 | - The update-conflict-detection feature would leave an FQDN updated without |
959 | a DHCID (still currently implemented as a TXT RR). This would cause later | |
960 | expiration or release events to fail to remove the domain name. The feature | |
961 | now also inserts the client's up to date DHCID record, so records may safely | |
962 | be removed at expiration or release time. Thanks to a patch submitted by | |
963 | Christof Chen. | |
964 | ||
95fd7038 DH |
965 | - Memory leak in the load_balance_mine() function is fixed. This would |
966 | leak ~20-30 octets per DHCPDISCOVER packet while failover was in use | |
967 | and in normal state. | |
968 | ||
969 | - Various compilation fixes have been included for the memory related | |
970 | DEBUG #defines in includes/site.h. | |
971 | ||
8a3c1e33 PS |
972 | - Fixed Linux client script 'unary operator expected' errors with DHCPv6. |
973 | ||
974 | - Fixed setting hostname in Linux hosts that require hostname argument | |
975 | to be double-quoted. Also allow server-provided hostname to | |
976 | override hostnames 'localhost' and '(none)'. | |
977 | ||
dedde1ba DH |
978 | - Fixed failover reconnection retry code to continue to retry to reconnect |
979 | rather than restarting the listener. | |
980 | ||
a57df74a DH |
981 | - Compilation on Solaris with USE_SOCKETS defined in includes/site.h has |
982 | been repaired. Other USE_ overrides should work better. | |
983 | ||
984 | - A check for the local flavor of IFNAMSIZ had a broken 'else' condition, | |
985 | that probably still resulted in the correct behaviour (but wouldn't use | |
986 | a larger defined value provided by the host OS). | |
987 | ||
350576c5 DH |
988 | - Fixed a bug where an OMAPI socket disconnection message would not result |
989 | in scheduling a failover reconnection, if the link had not negotiated a | |
990 | failover connect yet (e.g.: connection refused, asynch socket connect() | |
991 | timeouts). | |
992 | ||
792156a9 DH |
993 | - A bug was fixed that caused the 'conflict-done' state to fail to be parsed |
994 | in failover state records. | |
995 | ||
8a4e543b DH |
996 | ! A stack overflow vulnerability was fixed in dhclient that could allow |
997 | remote attackers to execute arbitrary commands as root on the system, | |
998 | or simply terminate the client, by providing an over-long subnet-mask | |
1b12d999 | 999 | option. CERT VU#410676 - CVE-2009-0692 |
8a4e543b | 1000 | |
a1308b64 DH |
1001 | - Fixed a bug where relay agent options would never be returned when |
1002 | processing a DHCPINFORM. | |
1003 | ||
1b12d999 DH |
1004 | - Versions 3.0.x syntax with multiple name->code option definitions is now |
1005 | supported. Note that, similarly to 3.0.x, for by-code lookups only the | |
1006 | last option definition is used. | |
1007 | ||
d453265f PS |
1008 | - Fixed a bug where a time difference of greater than 60 seconds between a |
1009 | failover pair could cause the primary to crash on contact with the | |
1010 | secondary. Thanks to a patch from Steinar Haug. | |
1011 | ||
3e29af1e PS |
1012 | - Don't look for IPv6 interfaces on Linux when running in DHCPv4 mode. |
1013 | Thanks to patches from Matthew Newton and David Cantrell. | |
1014 | ||
b8d45c67 DH |
1015 | - Secondary servers in a failover pair will now perform ddns removals if |
1016 | they had performed ddns updates on a lease that is expiring, or was | |
1017 | released through the primary. As part of the same fix, stale binding scopes | |
1018 | will now be removed if a change in identity of a lease's active client is | |
1019 | detected, rather than simply if a lease is noticed to have expired (which it | |
1020 | may have expired without a failover server noticing in some situations). | |
1021 | ||
583c1c16 DH |
1022 | - A patch supplied by David Cantrell at RedHat was applied that detects |
1023 | invalid calling parameters given to the ns_name_ntop() function. | |
1024 | Specifically, it detects if the caller passed a pointer and size pair | |
1025 | that causes the pointer to integer-wrap past zero. | |
1026 | ||
e4e3a2ab DH |
1027 | ! Fixed a fenceposting bug when a client had two host records configured, |
1028 | one using 'uid' and the other using 'hardware ethernet'. CVE-2009-1892 | |
95f5d38c | 1029 | |
875e99dc SR |
1030 | - Fixed the check in the dhcp_interface_signal_handler routine to verify |
1031 | the existence of the linked signal handler before calling it. | |
1032 | ||
2267da84 DH |
1033 | - Both host and subnet6 configuration groups are now included whether a |
1034 | fixed-address6 (DHCPv6) is in use or not. Host scoped configuration takes | |
1035 | precedence. This fixes two bugs, one where host scoped configuration | |
1036 | would not be included from a non-fixed-address6 host record, and the equal | |
1037 | and opposite bug where subnet6 scoped configuration would not be used when | |
571c38b0 | 1038 | over-riding values were not present in a matching fixed-address6 host |
2267da84 DH |
1039 | configuration. |
1040 | ||
cd3f0b9b DH |
1041 | - ./configure now checks to ensure the intX_t and u_intX_t types are defined, |
1042 | correcting a compilation failure when using Sun's compiler. | |
1043 | ||
0493fdca SR |
1044 | - Modified the handling of a connection to avoid releasing the omapi io |
1045 | object for the connection while it is still in use. One symptom from | |
1046 | this error was a segfault when a failover secondary attempted to connect | |
1047 | to the failover primary if their clocks were not synchronized. | |
1048 | ||
95bba8b6 SR |
1049 | - Clean up to allow compilation with gcc 2.95.4 on FreeBSD. Remove an |
1050 | extra semi-colon from common/dns.c and moved setting a variable to NULL | |
1051 | in server/dhcpv6.c to allow the compiler to decide that the variable | |
1052 | was always properly set. | |
1053 | ||
adbef119 | 1054 | Changes since 4.1.0b1 |
ebf076fe EH |
1055 | |
1056 | - A missing "else" in dhcrelay.c could have caused an interface not to | |
1057 | be recognized. | |
61d75ea2 | 1058 | |
a4ffedd1 DH |
1059 | Changes since 4.1.0a2 |
1060 | ||
1061 | - A cosmetic bug in DHCPDECLINE processing was fixed which caused all | |
1062 | successful DHCPDECLINEs to be logged as "not found" rather than | |
1063 | "abandoned". | |
1064 | ||
6ff3b26d FD |
1065 | - Added configuration file examples for DHCPv6. |
1066 | ||
1387545f DH |
1067 | - Some failover debugging #defines have been better defined and some |
1068 | high frequency messages moved to a deeper debugging symbol. | |
1069 | ||
1070 | - The CLTT parameter in failover is now only updated by client activity, | |
1071 | and not by failover binding updates (taking on the peer's CLTT). | |
1072 | ||
1073 | - Failover BNDUPD messages are now discarded if they conflict with an | |
d7ac7a27 | 1074 | update that has been transmitted, but not acknowledged. |
1387545f | 1075 | |
399d3dbe DH |
1076 | - A bug cleaning up unknown-xxx temporary option definitions was fixed. |
1077 | ||
fbcee149 DH |
1078 | - Delayed-ack is now a compile-time option, compiled out by default. |
1079 | This feature is simply too experimental for right now, and causes | |
1080 | some problems to some failover installations. We will revisit this | |
1081 | in future releases. | |
1082 | ||
f1672d89 DH |
1083 | - The !inet_pton() call in res_mkupdrec was adjusted to '<= 0' as |
1084 | inet_pton returns either 1, 0, or -1. | |
1085 | ||
236d3a99 DH |
1086 | - A dhclient-script for MacOS X has been included, which enables |
1087 | 'dhclient -6' support. | |
1088 | ||
efa5e6b9 DH |
1089 | - DDNS removal routines were updated so that the DHCID is not removed until |
1090 | the client has been deprived of all A and AAAA records (not only the last | |
1091 | one of either of those). This resolves a bug where dual stack clients | |
1092 | would not be able to regain their names after either expiration event. | |
1093 | ||
7d6180be | 1094 | Changes since 4.1.0a1 |
edcb5c46 EH |
1095 | |
1096 | - Corrected list of failover state values in dhcpd man page. | |
1097 | ||
51e7687f EH |
1098 | - Fixed a bug that caused some request types to be logged incorrectly. |
1099 | ||
20210a7b EH |
1100 | - Clients that sent a parameter request list containing the |
1101 | routers option before the subnet mask option were receiving | |
1102 | only the latter. Fixed. | |
1103 | ||
535485df EH |
1104 | - The server wasn't always sending the FQDN option when it should. |
1105 | ||
8fbb55ff DH |
1106 | - A partner-down failover server no longer emits 'peer holds all free leases' |
1107 | if it is able to newly-allocate one of the peer's leases. | |
1108 | ||
61220a00 EH |
1109 | - Fixed a coredump when adding a class via OMAPI. |
1110 | ||
c40e954c EH |
1111 | - Check whether files are zero length before trying to parse them. |
1112 | ||
63971a83 DH |
1113 | - Ari Edelkind's PARANOIA patch has been included and may be compiled in |
1114 | via two ./configure parameters, --enable-paranoia and | |
1115 | --enable-early-chroot. | |
1116 | ||
66cebfcb DH |
1117 | - ./configure was extended to cover many optional build features, such |
1118 | as failover, server tracing, debugging, and the execute() command. | |
1119 | ||
f8cbf390 DH |
1120 | - There is now a default 1/4 of a second scheduled delay between delayed |
1121 | fsync()'s, it can be configured by the max-ack-delay configuration | |
1122 | parameter. | |
1123 | ||
8269561d DH |
1124 | - A bug was fixed where the length of a hostname was miscalculated, so that |
1125 | hosts were given odd-looking domain names ("foo.bar.ba.example.com"). | |
1126 | ||
b445a411 DH |
1127 | - Shared network selection should be done from the innermost relay |
1128 | valid link-address field, rather than the outermost. | |
1129 | ||
bd72740e FD |
1130 | - Prefix pools are attached to shared network scopes. |
1131 | ||
9322442f FD |
1132 | - Merged IA_XX related structures. |
1133 | ||
8dea7ba7 FD |
1134 | - Add DHCPv6 files in configure. |
1135 | ||
4619c0a2 DH |
1136 | - A memory leak when using omapi has been fixed. |
1137 | ||
9ac4206a DH |
1138 | - DHCPv6 vendor-class options (VSIO) are now only sent when they appear |
1139 | on the DHCPv6 ORO. This resolves a bug where VSIO options were placed | |
1140 | in IA_NA encapsulated options fields. | |
1141 | ||
420d8b3f FD |
1142 | - Integrated client with stateless, temporary address and prefix delegation |
1143 | support. | |
1144 | ||
40ec5f38 DH |
1145 | - A double-dereference in dhclient transmission of DHCPDECLINEs was |
1146 | repaired. | |
1147 | ||
80097764 FD |
1148 | - Fix handling of format code 'Z'. |
1149 | ||
ffbaa880 FD |
1150 | - Support "-1" argument in DHCPv6. |
1151 | ||
7de20a95 EH |
1152 | - Merge DHCPv6-only "dhcrelay6" into general-purpose "dhcrelay" (use |
1153 | "-6" option to select DHCPv6 mode). | |
1154 | ||
d352732e EH |
1155 | - Fix handling of -A and -a flags in dhcrelay; it was failing to expand |
1156 | packet size as needed to add relay agent options. | |
1157 | ||
7d6180be DH |
1158 | - A bug in subnet6 parsing where options contained in subnet6 clauses would |
1159 | not be applied to clients addressed within that network was repaired. | |
1160 | ||
1161 | - When configuring a "subnet {}" or "subnet6 {}" without an explicit | |
1162 | shared-network enclosing it, the DHCP software would synthesize a | |
1163 | shared-network to contain the subnet. However, all configuration | |
1164 | parameters within the subnet more intuitively belong "to any client | |
1165 | on that interface", or rather the synthesized shared-network. So, | |
1166 | when a shared-network is synthesized, it is used to contain the | |
1167 | configuration present inside the subnet {} clause. This means that | |
1168 | the configuration will be valid for all clients on that network, not | |
1169 | just those addressed out of the stated subnet. If you intended the | |
1170 | opposite, the workaround is to explicitly configure an empty | |
1171 | shared-network. | |
1172 | ||
1173 | - A bug was fixed where Information-Request processing was not sourcing | |
1174 | configured option values. | |
1175 | ||
1176 | - A warning was added since the DHCPv6 processing software does not yet | |
1177 | support class statements. | |
1178 | ||
dd484ced DH |
1179 | - Compliation warnings on GCC 4.3 relating to bootp source address |
1180 | selection were repaired. | |
1181 | ||
ecddae64 DH |
1182 | - The v6 BSD socket method was updated to use a single UDP BSD socket |
1183 | no matter how many interfaces are involved, differentiating the | |
1184 | interfaces the packets were received on by the interface index supplied | |
1185 | by the OS. | |
1186 | ||
1187 | - The relay agent no longer listens to the All DHCP Servers Multicast | |
1188 | address. | |
1189 | ||
1190 | - A bug was fixed in data_string_sprintfa() where va_start was only called | |
1191 | once for two invocations of vsprintf() variants. | |
1192 | ||
d104d45b DH |
1193 | - ERO (RFC 4994) server support. |
1194 | ||
1195 | - Basic and partial DHCPv6 leasequery support. | |
1196 | ||
1197 | - Reliable DHCPv6 release (previous behavior, send release and exit, is | |
1198 | still available with dhclient -6 -1 -r). | |
1199 | ||
01a54c17 | 1200 | Changes since 4.0.0 (new features) |
3c12f746 | 1201 | |
6d7f9584 FD |
1202 | - Added DHCPv6 rapid commit support. |
1203 | ||
4cafb815 | 1204 | - Added explicit parser support for zero-length DHCP options, such as |
6d7f9584 | 1205 | rapid-commit, via format code 'Z'. |
4cafb815 | 1206 | |
022fe95e EH |
1207 | - It's now possible to update the "ends" field of a lease with OMAPI. |
1208 | This is useful if you want not only to release a lease, but also make | |
1209 | it available for reuse right away. Hat tip to Christof Chen. | |
1210 | ||
1dcc3612 SK |
1211 | - Fixed definition of the iaaddr hash functions to use the correct |
1212 | functions when referencing and dereferencing memory. | |
1213 | ||
aabfa4de FD |
1214 | - Some definitions not in phase with the IANA registry were updated. |
1215 | ||
0674055a FD |
1216 | - Allocated interface IDs are better controlled ('u' bit set to zero, |
1217 | reserved IDs avoided). | |
1218 | ||
b51c785f FD |
1219 | - Unicast options are taken into account only for RENEWs. |
1220 | ||
900405e9 FD |
1221 | - NoAddrsAvail answers to SOLICITs are always ADVERTISEs even when a SOLICIT |
1222 | carries a rapid-commit option. | |
1223 | ||
96b620e5 FD |
1224 | - Return in place of raise an impossible condition when one tries to release |
1225 | an empty active lease. | |
1226 | ||
be62cf06 FD |
1227 | - Timer granularity is now 1/100s in the DHCPv6 client. |
1228 | ||
01a54c17 EH |
1229 | - The dhclient-script was updated to create a host route for the default |
1230 | gateway if the supplied subnet mask for an IPv4 address was a /32. This | |
1231 | allows the client to work in 'captive' network environments, where the | |
1232 | operator does not want clients to crosstalk directly. | |
1233 | ||
1234 | - MINUS tokens should be parseable again. | |
1235 | ||
1236 | - Multiple (up to "delayed-ack x;" maximum) DHCPv4 packets are now queued and | |
1237 | released in bursts after single fsync() events when the upper limit is | |
1238 | reached or if the receiving sockets go dry. The practical upshot is | |
1239 | that fsync-coupled server performance is now multiplicitively increased. | |
1240 | The default delayed ack limit is 28. Thanks entirely to a patch from | |
1241 | Christof Chen. | |
1242 | ||
1243 | Changes since 4.0.0 (bug fixes) | |
1244 | ||
1245 | - DHCP now builds on AIX. | |
1246 | ||
1247 | - Exit with warning when DHCPv6-specific statements are used in the | |
1248 | config file but -6 is not specified. | |
1249 | ||
1250 | - Fixed "--version" flag in dhcrelay | |
1251 | ||
1252 | - The 'min-secs' configuration parameter's log message has been updated to | |
1253 | be more helpful. | |
1254 | ||
1255 | - The warning logged when an address range doesn't fit in the subnets | |
1256 | they were declared has been updated to be more helpful and identify the | |
1257 | typo in configuration that created the spanning addresses. | |
1258 | ||
1259 | - A bug in failover pool rebalancing that caused POOLREQ message ping-pongs | |
1260 | was repaired. | |
1261 | ||
1262 | - A flaw in failover pool rebalancing that could cause POOLREQ messages to | |
1263 | be sent outside of the min-balance/max-balance scheduled intervals has | |
1264 | been repaired. | |
1265 | ||
1266 | - A cosmetic bug during potential-conflict recovery that caused the peer's | |
1267 | 'conflict-done' state message to be logged as 'unknown-state' has been | |
1268 | repaired. It is now logged correctly. | |
1269 | ||
49f61135 DH |
1270 | - A bug was fixed where the 'giaddr' may be used to find the client's subnet |
1271 | rather than its own 'ciaddr'. | |
1272 | ||
41d4652f DH |
1273 | - A log message was introduced to clarify the situation where a failover |
1274 | 'address' parameter (the server's local address) did not resolve to an | |
1275 | IPv4 address. | |
1276 | ||
2c9bf1f4 DH |
1277 | - The minimum site code value was set to 224 in 3.1.0 to track RFC3942. This |
1278 | broke a lot of legacy site local configurations. The new code in place will | |
1279 | track site local space minimum option codes and logs a warning to encourage | |
1280 | updates and exploration of site local code migration problems. Option | |
1281 | codes less than 128 in site local spaces remain inaccessible. | |
1282 | ||
1283 | - A possible relay agent option bug was repaired where random server | |
1284 | initialization state may have been used to signal the relay agent | |
1285 | information options sub-option code for the 'END' of the option space. | |
1286 | ||
cff9b78f SK |
1287 | - Fixes to allow code to compile and run on Solaris 9. |
1288 | ||
c4d29896 SK |
1289 | - Fixes to allow code to compile on Mac OS X Leopard (10.5). |
1290 | ||
57fcb8d9 SK |
1291 | - When server is configured with options that it overrides, a warning is |
1292 | issued when the configuration file is read, rather than at the time the | |
1293 | option is overridden. This was important, because the warning was given | |
1294 | every time the option was overridden, which could create a lot of | |
1295 | unnecessary logging. | |
1296 | ||
219a65eb DH |
1297 | - Fixed a compilation problems on platforms that define a value for FDDI, |
1298 | which conflicts with a dhcp configuration syntax token by the same name. | |
1299 | ||
ffdf3c8c DH |
1300 | - When a failover server suspects it has encountered a peer running a |
1301 | version 3.0.x failover server, a warning that the failover wire protocol | |
1302 | is incompatible is printed. | |
1303 | ||
1304 | - The failover server no longer issues a floating point error if it encounters | |
1305 | a previously undefined option code. | |
1306 | ||
00a002fc MA |
1307 | - Fix startup error messages to report a missing "subnet6 declaration", rather |
1308 | than a missing "subnet declaration", when running as a DHCPv6 server. | |
1309 | ||
7e9f7a1b FD |
1310 | - DHCPv6 client timestamp in DUID was based on the year 1970 rather |
1311 | than the year 2000. | |
1312 | ||
e2cfde76 FD |
1313 | - Warn when attempting to use a hardware parameter in DHCPv6. |
1314 | ||
cabdb9b1 FD |
1315 | - DHCPv6 released resources are now marked as released by the client. |
1316 | ||
5d89d60f FD |
1317 | - 'Soft' bindings have no more side-effects. |
1318 | ||
61d75ea2 DH |
1319 | Changes since 4.0.0b3 |
1320 | ||
1321 | - The reverse dns name for PTR updates on IPv6 addresses has been fixed to | |
1322 | use ip6.arpa. rather than default to in-addr.arpa and require user | |
1323 | configuration. | |
76db44f9 | 1324 | |
e32529a5 EH |
1325 | - dhc6_lease_destroy() and dhc6_ia_destroy() now set lease and IA pointers |
1326 | to NULL after freeing, to prevent subsequent accesses to freed memory. | |
1327 | ||
76db44f9 SK |
1328 | - The DHCPv6 server would not send the preference option unless the |
1329 | client requested it, via the ORO. This has been fixed, so the DHCPv6 | |
1330 | server will always send the preference value if it is configured. | |
e4a6be15 | 1331 | |
6f76de58 SK |
1332 | - When addresses were passed as hints to the server in an IA, they were |
1333 | incorrectly handled, sometimes being treated as an error. Now the | |
1334 | server will treat these as hints and ignore them if it cannot supply | |
1335 | a requested address. | |
1336 | ||
703873ab DH |
1337 | - If the client had multiple addresses, and one expired (was not renewed |
1338 | by the server), the client would continue to attempt to renew the same | |
1339 | old address over and over. Now, the client will omit any expired | |
1340 | addresses from future Confirm, Renew, or Rebind messages. | |
1341 | ||
1342 | - dhclient -6 will now select renew/rebind timers based upon the longest | |
1343 | address expiration time rather than the shortest expiration time, in | |
1344 | order to avoid cascading renewals in the event a server elects not to | |
1345 | extend one of multiple IAADDR leases. | |
1346 | ||
b024480e DH |
1347 | - The server now limits clients that request multiple addresses to one |
1348 | address per IA by default, which can be adjusted through the | |
1349 | "limit-addrs-per-ia" configuration option. | |
1350 | ||
c0216cb7 DH |
1351 | - The DHCPv6 client now issues fresh transaction IDs on Renew and Rebind |
1352 | message exchanges, rather than using the most recent ID. | |
1353 | ||
1ac57173 FD |
1354 | - The DHCPv6 server now replies to Information-Request messages. |
1355 | ||
83835822 DH |
1356 | - A bug was fixed in the dhclient-script for BSDs to correctly carry error |
1357 | codes through some conditions. | |
1358 | ||
c54db708 FD |
1359 | - The parsing of some options in the dhclient lease file, in particular |
1360 | the success DHCPv6 status-code, was fixed. | |
1361 | ||
e5d83524 DH |
1362 | - A bug was fixed that caused the DHCPv6 ORO option to be corrupted with |
1363 | seemingly random values. | |
1364 | ||
821f2dda DH |
1365 | - A reference overleak in DHCPv6 shared network processing was repaired. |
1366 | ||
f8b3c6f4 DH |
1367 | - ./configure now autodetects local database locations rather than trying |
1368 | to put dhcpd.leases and dhclient.leases in /usr/local/var/db, which no | |
1369 | one ever has. | |
1370 | ||
b9137d42 SK |
1371 | - Regression fix for bug where server advertised a IPv6 address in |
1372 | response to a SOLICIT but would not return the address in response | |
1373 | to a REQUEST. | |
1374 | ||
9f1d5a2f DH |
1375 | - A bug was fixed where the DHCPv6 server puts the NoAddrsAvail status |
1376 | code in the IA_NA was fixed. The status code now appears in the root | |
1377 | level. | |
1378 | ||
e4a6be15 DH |
1379 | Changes since 4.0.0b2 |
1380 | ||
65cf86d7 EH |
1381 | - Clarified error message when lease limit exceeded |
1382 | ||
b1d3778c DH |
1383 | - Relative time may now be used as a qualifier for 'allow' and 'deny' access |
1384 | control lists. These directives may be used to assist in re-addressing | |
1385 | address pools without having to constantly reconfigure the server. Please | |
1386 | see 'man dhcpd.conf' for more information on allow/deny 'after time' syntax. | |
1387 | Thanks to a patch from Christof Chen. | |
1388 | ||
bead14ea DH |
1389 | - The server will now include multiple IA_NA's and multiple IAADDRs within |
1390 | them, if advertised by the client. It still only seeks to allocate one | |
1391 | new address. | |
1392 | ||
f765ec36 SK |
1393 | Changes since 4.0.0b1 |
1394 | ||
75135a3f EH |
1395 | - Use different paths for PID and lease files when running in DHCPv4 |
1396 | or DHCPv6 mode, so that servers for both protcols can be run | |
1397 | simultaneously on a single interface. | |
1398 | ||
5c2d55c7 EH |
1399 | - Fixed a buffer overflow error which could have allowed a denial |
1400 | of service under unusual server configurations | |
1401 | ||
1402 | - Eliminated a spurious error message from the client | |
1403 | ||
f765ec36 SK |
1404 | - A number of bugs with the internal handling of lease state on the |
1405 | server have been fixed. Some of these could cause server crashes. | |
fa9b593d | 1406 | |
edb1283e DH |
1407 | - The peer_wants_leases() changes pulled up from 3.1.0 were corrected, |
1408 | 'never used' leases will no longer consistently shift between servers | |
1409 | on every pool rebalance run. | |
1410 | ||
c71c6399 DH |
1411 | - sendmsg()/recvmsg() control buffers are now declared in such a way to |
1412 | ensure they are correctly aligned on all (esp. 64-bit) architectures. | |
1413 | ||
5279b8f3 DH |
1414 | - The client leasing subsystem was streamlined and corrected to account |
1415 | more closely for changes in client link attachment selection. | |
1416 | ||
ab3a540f | 1417 | Changes since 4.0.0a3 |
763cba6b | 1418 | |
884a458f SK |
1419 | - The DHCP server no longer requires a "ddns-update-style" statement, |
1420 | and now defaults to "none", which means DNS updates are disabled. | |
1421 | ||
fa9b593d DH |
1422 | - Log messages when failover peer names mismatch have been improved to |
1423 | point out the problem. | |
1424 | ||
1b5053b5 SK |
1425 | - Bug where server advertised a IPv6 address in response to a SOLICIT |
1426 | but would not return the address in response to a REQUEST. Thanks to | |
1427 | Dennis Kou for finding the bug. | |
1428 | ||
c886c298 SK |
1429 | - Fixed an error causing the server to lock up on lease expiration, |
1430 | reported independently by Jothilingam Vasu and Dennis Kou. | |
1431 | ||
eaf7eb17 DH |
1432 | - Fixed a ./configure bug where compile tests were failing due to |
1433 | "-Werror" (unused variable) rather than the actual test failure. Lead | |
1434 | to inconsistent and unworkable auto-configurations. | |
1435 | ||
109e00db DH |
1436 | - Compilation with DLPI and -Werror has been repaired. |
1437 | ||
3ad9d48f SK |
1438 | - Error in decoding IA_NA option if multiple interfaces are present |
1439 | fixed by Marcus Goller. | |
1440 | ||
8eab95f2 DH |
1441 | - DHCPv6 server Confirm message processing has been enhanced - it no |
1442 | longer replies only to clients with host {} records, it now replies | |
1443 | as directed in RFC3315 section 18.2.2 - that is, to all clients | |
1444 | regardless of the existence of bindings. | |
1445 | ||
07b9a351 DH |
1446 | - A core dump during expired lease cleanup has been repaired. |
1447 | ||
7285af30 DH |
1448 | - DDNS updates state information are now stored in 'binding scopes' that |
1449 | follow the leases through their lifecycles. This enables DDNS teardowns | |
1450 | on leases that are assigned and expired inbetween a server restart (the | |
1451 | state is recovered from dhcpd.leases). Arbitrary user-specified binding | |
1452 | scopes ('set var = "value";') are not yet supported. | |
1453 | ||
2394b26b DH |
1454 | - Additional compilation problems on HP/UX have been repaired. |
1455 | ||
ab3a540f SK |
1456 | Changes since 4.0.0a2 |
1457 | ||
97050349 SK |
1458 | - Fix for startup where there are no IPv4 addresses on an interface. |
1459 | Thanks to Marcus Goller for reporting the bug. | |
1460 | ||
763cba6b | 1461 | - Fixed file descriptor leak on listen failure. Thanks to Tom Clark. |
e889ded1 | 1462 | |
237f8d3a SK |
1463 | - Bug in server configuration parser caused server to get stuck on |
1464 | startup for certain bad pool declarations. Thanks to Guillaume | |
1465 | Knispel for the bug report and fix. | |
1466 | ||
28868515 SK |
1467 | - Code cleaned to remove warnings reported by "gcc -Wall". |
1468 | ||
d00d373a SK |
1469 | - DHCPv6 is now the default. You can disable DHCPv6 support using the |
1470 | "--disable-dhcpv6" flag when you run the configure script. | |
1471 | ||
8dfd5744 DH |
1472 | - An internal database inconsistency bug was repaired where the server |
1473 | would segfault if a client attempted to renew a lease that had been | |
1474 | loaded from persistent storage. | |
1475 | ||
45d545f0 | 1476 | - 'request' and 'also request' syntaxes have been added to accommodate |
0c20eab3 DH |
1477 | the DHCPv6 client configuration. 'send dhcp6.oro' is no longer |
1478 | necessary. | |
1479 | ||
f800f4f6 SK |
1480 | - Bug fixed where configuration file parsing did not work with |
1481 | zero-length options; this made it impossible to set the | |
1482 | rapid-commit option. | |
1483 | ||
845e9677 DH |
1484 | - Bogus messages about host records with IPv4 fixed-addresses being of |
1485 | non-128-bits in length were removed. | |
1486 | ||
76c944da SK |
1487 | Changes since 4.0.0a1 |
1488 | ||
71765b58 SK |
1489 | - Bug in octal parsing fixed. Thanks to Bernd Fuhrmann for the report |
1490 | and fix. | |
1491 | ||
847e7000 SK |
1492 | - Autoconf now supplies proper flags for Solaris DHCPv6 builds. |
1493 | ||
bda33169 SK |
1494 | - Fix for parsing error on some IPv6 addresses. |
1495 | ||
9b21e73e SK |
1496 | - Invalid CIDR representation for IPv6 subnets or ranges now checked |
1497 | for when loading configuration. | |
1498 | ||
8da06bb1 DH |
1499 | - Compilation on HP/UX has been repaired. The changes should generally |
1500 | apply to any architecture that supplies SIOCGLIFCONF but does not | |
1501 | use 'struct lifconf' structures to pass values. | |
1502 | ||
dd328225 DH |
1503 | - Two new operators, ~= and ~~, have been integrated to implement |
1504 | boolean matches by regular expression (such as may be used in | |
1505 | class matching statements). Thanks to a patch by Alexandr S. | |
1506 | Agranovsky, which underwent slight modification. | |
1507 | ||
76c944da SK |
1508 | - Fix for icmp packets on 64-bit systems (bug introduced in 4.0). |
1509 | ||
f796f70a DH |
1510 | - A bug was fixed in interface discovery wherein an error identifying |
1511 | a server-configured interface with no IPv4 addresses would SEGV. | |
76c944da | 1512 | |
c11f349d EH |
1513 | - Fixed a bug in which write_lease() might report a failure incorrectly |
1514 | ||
af5fa176 EH |
1515 | - Added support for DHCPv6 Release messages |
1516 | ||
1517 | - Added -x option to dhclient, which triggers dhclient processes | |
1518 | to exit gracefully without releasing leases first | |
1519 | ||
a546f2a7 EH |
1520 | - All binaries (client, server, relay) now change directories |
1521 | to / before going into daemon mode, so as not to hold $CWD open | |
1522 | ||
b55d0d5f EH |
1523 | - Fixed a bug parsing DHCPv6 client-id's in host-identifier statements |
1524 | ||
26be82af DH |
1525 | - Fixed a bug with the 'ddns-updates' boolean server configuration |
1526 | parameter, which caused the server to fail. | |
1527 | ||
98bd7ca0 DH |
1528 | Changes since 4.0.0-20070413 |
1529 | ||
d9b43370 SK |
1530 | - Old (expired) leases are now cleaned. |
1531 | ||
8c1752d2 DH |
1532 | - IPv6 subnets now have support for arbitrary allocation ranges via |
1533 | a new 'range6' configuration directive. | |
1534 | ||
98bd7ca0 DH |
1535 | - An obviated option code hash lookup to find D6O_CLIENTID was removed. |
1536 | ||
a512d11b DH |
1537 | - Corrected some situations where variables might be used without being |
1538 | initialized. | |
1539 | ||
1540 | - Silenced several other compiler warnings. | |
1541 | ||
1542 | - Include the more standard sys/uio.h rather than rely upon other | |
f66f02cc DH |
1543 | header files to include it (fixes a BSD 4.2 compile failure). |
1544 | ||
1545 | - Duplicate dhclient-script updates for DHCPv6 to all provided scripts. | |
a512d11b | 1546 | |
4ba58919 DH |
1547 | - DHCPv4 I/O methods that failed to sense hardware address were corrected. |
1548 | ||
1549 | - DHCPv4 is now the default (as documented) rather than DHCPv6. The default | |
1550 | was set to DHCPv6 to facilitate ease early development, and forgotten. | |
1551 | ||
1552 | - Corrected a segmentation violation in DHCPv4 socket processing. | |
1553 | ||
8ea19a71 | 1554 | - dhclient will now fork() into the background once it binds to an |
45d545f0 | 1555 | IPv6 address, or immediately if the -n flag is supplied. |
8ea19a71 DH |
1556 | |
1557 | - -q is now the default behaviour on dhclient, with -d or -v enabling | |
1558 | non-quiet (stderr logging) mode. | |
1559 | ||
2cf8d0bd DH |
1560 | - Fix documentation of the domain-search atom (quoted, with commas). |
1561 | ||
1562 | - Document DHCPv6 options presently in the default table. | |
1563 | ||
fe5b0fdd DH |
1564 | - Replaced ./configure shellscripting with GNU Autoconf. |
1565 | ||
98bd7ca0 DH |
1566 | Changes since 3.1.0 (NEW FEATURES) |
1567 | ||
1568 | - DHCPv6 Client and Server protocol support. Use '-6' to run the daemons | |
1569 | as v6-only. Use '-4' to run the daemons as v4-only (default. There is | |
1570 | no support currently for both. | |
1571 | ||
1572 | - Server support for multiple IA_NA options, containing at most one | |
1573 | IAADDR option. | |
1574 | ||
1575 | - Client support for one IA_NA option, containing any number of IAADDR | |
1576 | options. | |
1577 | ||
1578 | - Server support for the DHCPv6 Information-request message. | |
1579 | ||
1580 | - Inappropriate unicast DHCPv6 messages sent to the server are now | |
1581 | discarded, and this has rearchitected the IO system slightly. | |
1582 | ||
1583 | - The DHCPv6 server DUID defaults to type 1, is persistently stored in | |
1584 | the leases database, and can be over-ridden (either completely, or by | |
1585 | specifying type 1 or type 2). | |
1586 | ||
1587 | - The server only uses Rapid-Commit if it has been configured with the | |
1588 | Rapid-Commit option and the client requests it. | |
1589 | ||
1590 | - DDNS support. We now update AAAA records in the same place we would | |
1591 | update A records, if we have an IPv6 address. We also generate IP6.ARPA | |
1592 | style names for PTR records if we're dealing with an IPv6 address. Both | |
1593 | A and AAAA updates are done using the same 'fqdn.' virtual option space | |
1594 | (although the DHCPv4 FQDN and DHCPv6 FQDN options are formatted | |
1595 | differently, they both use the same code here). | |
1596 | ||
1597 | - The Linux dhclient-script attempts to set and remove assigned addresses, | |
1598 | and to configure /etc/resolv.conf from nameserver and domain name | |
1599 | configurations. It can be extended to configure other parameters. | |
1600 | ||
1601 | - Initial DHCPv6 lease support. | |
1602 | ||
1603 | - The IO system now tracks all local IP addresses, so that the DHCP | |
1604 | applications (particularly the dhcrelay) can discern between what frames | |
1605 | were transmitted to it, and what frames are being carried through it which | |
1606 | it should not intercept. | |
1607 | ||
1418fd11 DH |
1608 | Changes since 3.1.0 (Maintenance) |
1609 | ||
1610 | - A bug was repaired where MAC Address Affinity for virgin leases always | |
1611 | mapped to the primary. Virgin leases now have an interleaved preference | |
1612 | between primary and secondary. | |
1613 | ||
1614 | - A bug was repaired where MAC Address Affinity for clients with no client | |
1615 | identifier was sometimes mishashed to the peer. Load balancing during | |
1616 | runtime and pool rebalancing were opposing. | |
1617 | ||
aa3e348e DH |
1618 | - An assertion in lease counting relating to reserved leases was repaired. |
1619 | ||
e9c59645 DH |
1620 | - The subnet-mask option inclusion now conforms with RFC2132 section 3.3; |
1621 | it will only appear prior to the routers option if it is present on the | |
1622 | Parameter-Request-List. The subnet-mask option will also only be | |
1623 | included by default (if it is not on the PRL) in response to DISCOVER | |
1624 | or REQUEST messages. | |
1625 | ||
1626 | - The FQDN option is only supplied if the client supplied an FQDN option or | |
1627 | if the FQDN option was explicitly requested on the PRL. | |
1628 | ||
c104546d DH |
1629 | - Dynamic BOOTP leases are now load balanced in failover. |
1630 | ||
b9d0cc05 DH |
1631 | Changes since 3.1.0rc1 |
1632 | ||
1633 | - The parse warning that 'deny dyanmic bootp;' must be configured for | |
1634 | failover protected subnets was removed. | |
1635 | ||
a512cc3a DH |
1636 | Changes since 3.1.0b2 |
1637 | ||
1638 | - Failover rebalance events no longer play ping pong with round errors | |
1639 | (moving leases between free and back to backup where there are an | |
1640 | odd number of leases). | |
1641 | ||
1642 | - The 'pool' log line has been split into two messages, one before the | |
1643 | rebalance run, and one after. | |
1644 | ||
1645 | - Any queued BNDACKs are transmitted before transmitting new BNDUPDs. | |
1646 | This enforces the correct sequence of events for the remote server | |
1647 | processing these messages. | |
1648 | ||
fe5b0fdd | 1649 | Changes since 3.1.0b1 |
27837f95 | 1650 | |
74dc3e0b EH |
1651 | - Fixed a bug that caused OMAPI clients to freeze when opening lease |
1652 | objects. | |
1653 | ||
1ba87b37 EH |
1654 | - A new server config option "fqdn-reply" specifies whether the server |
1655 | should send out option 81 (FQDN). Defaults to "on". If set to "off", | |
1656 | the FQDN option is not sent, even if the client requested it. This is | |
1657 | needed because some clients misbehave otherwise. Thanks to Christof Chen | |
1658 | at Allianz. | |
1659 | ||
a58da042 EH |
1660 | - Allow trace output files (-tf option) to be overwritten, rather than |
1661 | crashing dhcpd if the file already exists | |
1662 | ||
61252edf EH |
1663 | - A bug was fixed that caused dhcpd to segfault if a pool was declared |
1664 | outside the scope of a subnet in dhcpd.conf. | |
1665 | ||
27837f95 DH |
1666 | - Some uninitialized values were repaired in dhcpleasequery.c that |
1667 | caused the server to abort. | |
1668 | ||
4d2eaafb DH |
1669 | - A new server config option, 'do-reverse-updates', has been added |
1670 | which causes the server to abstain from performing updates on PTR | |
1671 | records. Thanks to a patch from Christof Chen at Allianz. | |
1672 | ||
06211b40 DH |
1673 | - A bug was repaired in subencapsulation support, where spaces separated |
1674 | by empty spaces would not get included. | |
1675 | ||
d6614ea2 DH |
1676 | - A bug in dhclient was repaired which caused it to send parameter request |
1677 | lists of 55 bytes in length no matter how long the declared PRL was. | |
1678 | ||
132d38f2 DH |
1679 | - 'dhcp.c(3953): non-null pointer' has been repaired. This fixes a flaw |
1680 | wherein the DHCPv4 server may ignore a configured server-identifier. | |
1681 | ||
fc3b9c90 DH |
1682 | - A flaw in failover startup sequences was repaired that sometimes left |
1683 | the primary DHCP server's pool rebalance schedules unscheduled. | |
1684 | ||
c9feb859 DH |
1685 | - Corrected a flaw that broke encapsulated spaces included due to presence |
1686 | on the parameter request list. | |
1687 | ||
c57db45c SK |
1688 | Changes since 3.1.0a3 |
1689 | ||
1690 | - Some spelling fixes. | |
98311e4b | 1691 | |
bd2bc2fa DH |
1692 | Changes since 3.1.0a2 |
1693 | ||
1694 | - A bug was fixed where attempting to permit leasequeries results in a | |
1695 | fatal internal error, "Unable to find server option 49". | |
1696 | ||
85edef5c DH |
1697 | - A bug was fixed in dhclient rendering the textual output form of the |
1698 | domain-search option syntax. | |
1699 | ||
bdddcb7d DH |
1700 | Changes since 3.1.0a1 |
1701 | ||
1702 | - A bug in the FQDN universe that added FQDN codes to the NWIP universe's | |
1703 | hash table was repaired. | |
1704 | ||
616d67cb DH |
1705 | - The servers now try harder to transmit pending binding updates when |
1706 | entering normal state. | |
1707 | ||
1708 | - UPDREQ/UPDREQALL handling was optimized - it no longer dequeues and | |
1709 | requeues all pending updates. This should reduce the number of spurious | |
66c8f734 DH |
1710 | 'xid mismatch' log messages. |
1711 | ||
1712 | - An option definition referencing leak was fixed, which resulted in early | |
1713 | termination of dhclient upon the renewal event. | |
616d67cb | 1714 | |
6708d944 DH |
1715 | - Some default hash table sizes were tweaked, some upwards, some downwards. |
1716 | 3.1.0a1's tables resulted in a reduction in default server memory use. | |
1717 | The new selected values provide more of a zero sum (increasing the size | |
1718 | of tables likely to be populated, decreasing the size of tables unlikely). | |
1719 | ||
45d545f0 | 1720 | - Lease structures appear in three separate hashes: by IP address, by UID, |
6708d944 DH |
1721 | and by hardware address. One type of table was used for all three, and |
1722 | improvements to IP address hashing were applied to all three (so UID and | |
1723 | hardware addresses were treated like 4-byte integers). There are now two | |
1724 | types of tables, and the uid/hw hashes use functions more appropriate | |
1725 | to their needs. | |
1726 | ||
1727 | - The max-lease-misbalance percentage no longer causes scheduled rebalance | |
1728 | runs to be skipped: it still governs the schedule, but every scheduled | |
1729 | run will attempt balance. | |
1730 | ||
a7ee93fe DH |
1731 | - A segfault bug in recursive encapsulation support has been corrected. |
1732 | ||
98311e4b DH |
1733 | Changes since 3.0 (New Features) |
1734 | ||
1735 | - A workaround for certain STSN servers that send a mangled domain-name | |
1736 | option was introduced for dhclient. The client will now accept corrupted | |
1737 | server responses, if they contain a valid DHCP_MESSAGE_TYPE (OFFER, ACK, | |
1738 | or NAK). The server will continue to not accept corrupt client packets. | |
1739 | ||
98bd7ca0 | 1740 | - Support for 'reserved' (pseudo-static) and BOOTP leases via failover |
a55ccdd0 | 1741 | was introduced. |
98311e4b DH |
1742 | |
1743 | - Support for adding, removing, and managing class and subclass statements | |
1744 | via OMAPI. | |
1745 | ||
a55ccdd0 DH |
1746 | - The failover implementation was updated to comply with revision 12 of |
1747 | the protocol draft. | |
1748 | ||
98311e4b DH |
1749 | - 'make install' now creates the initial zero-length dhcpd.leases file if |
1750 | one does not already exist on the system. | |
1751 | ||
b43c87ad | 1752 | - RFC3942 compliance, site-local option spaces start at 224 now, not 128. |
b43c87ad | 1753 | |
0b17f049 DH |
1754 | - The Load Balance Algorithm was misimplemented. The current implementation |
1755 | matches RFC 3074. | |
1756 | ||
2727c1cf DH |
1757 | - lcase() and ucase() configuration expressions have been added which adjust |
1758 | their arguments from upper to lower and lower to upper cases respectively. | |
2714a8ef | 1759 | Thanks to a patch from Albert Herranz. |
2727c1cf | 1760 | |
febbd402 DH |
1761 | - The dhclient 'reject ...;' statement, which rejects leases given by named |
1762 | server-identifiers, now permits address ranges to be specified in CIDR | |
7d7073e7 | 1763 | notation. Thanks to a patch from David Boyce. |
febbd402 | 1764 | |
ee912528 DH |
1765 | - The subnet-mask option is now supplied by default, but at lowest |
1766 | priority. This helps a small minority of clients that provide parameter | |
1767 | request lists, but do not list the subnet-mask option because they were | |
1768 | designed to interoperate with a server that behaves in this manner. | |
1769 | ||
1770 | - The FQDN option is similarly supplied even if it does not appear on the | |
1771 | parameter request list, but not to the exclusion of options that do | |
1772 | appear at the parameter request list. Up until now it had ultimate | |
1773 | priority over the client's parameter request list. | |
1774 | ||
f7fdb216 | 1775 | - Varying option space code and length bit widths (8/16/32) are now |
51202707 | 1776 | supported. This is a milestone in achieving RFC 3925 "VIVSO" and |
f7fdb216 DH |
1777 | DHCPv6 support. |
1778 | ||
5e864416 DH |
1779 | - A new common (server or client) option, 'db-time-format local;', has |
1780 | been added which prints the local time in /var/db/dhcpd.leases rather | |
1781 | than UTC. Thanks to a patch from Ken Lalonde. | |
1782 | ||
b500bd4c DH |
1783 | - Some patches to improve DHCP Server startup speed from Andrew Matheson |
1784 | have been incorporated. | |
1785 | ||
2426234f DH |
1786 | - Failover pairs now implement 'MAC Affinity' on leases moving from the |
1787 | active to free states. Leases that belonged to the failover secondary | |
1788 | are moved to BACKUP state rather than FREE upon exiting EXPIRED state. | |
1789 | If lease rebalancing must move leases, it tries first to move leases | |
1790 | that belong to the peer in need. | |
1791 | ||
1792 | - The server no longer sends POOLREQ messages unless the pool is severely | |
1793 | misbalanced in the peer's favor (see 'man dhcpd.conf' for more details). | |
1794 | ||
1795 | - Pool rebalance events no longer happen upon successfully allocating a | |
1796 | lease. Instead, they happen on a schedule. See 'man dhcpd.conf' for the | |
1797 | min-balance and max-balance statements for more information. | |
1798 | ||
334bf491 DH |
1799 | - The DHCP Relay Agent Information Option / Link Selection Sub-Option |
1800 | is now supported. (See RFC3527 for details). | |
1801 | ||
3004bebf DH |
1802 | - A new DDNS related server option, update-conflict-detection, has been |
1803 | added. If this option is enabled, dhcpd will perform normal DHCID | |
1804 | conflict resolution (the default). If this option is disabled, it will | |
1805 | instead trust the assigned name implicitly (removing any other bindings | |
1806 | on that name). This option has not been made available in dhclient. | |
1807 | ||
567e8561 DH |
1808 | - In those cases where the DHCP software manufactures an IP header (to |
1809 | transmit via bpf, lpf, etc), the IP TTL the software selects has been | |
1810 | increased from 16 to 128. This is intended to match Microsoft Windows | |
1811 | DHCP Client behaviour, to increase compatibility. | |
1812 | ||
a396d25f DH |
1813 | - 'ignore client-updates;' now has behaviour that is different from |
1814 | 'deny client-updates;'. The client's request is not truly ignored, | |
1815 | rather it is encouraged. Should this value be configured, the server | |
1816 | updates DNS as though client-updates were set to 'deny'. That is, it | |
1817 | enters into DNS whatever it is configured to do already, provided it is | |
1818 | configured to. Then it sends a response to the client that lets the | |
1819 | client believe it is performing client updates (which it will), probably | |
1820 | for a different name. In essence, this lets the client do as it will, | |
1821 | ignoring this aspect of their request. | |
1822 | ||
dba5803b DH |
1823 | - Support for compressed 'domain name list' style DHCP option contents, and |
1824 | in particular the domain search option (#119) was added. | |
1825 | ||
41e45067 | 1826 | - The DHCP LEASEQUERY protocol as defined in RFC4388 is now implemented. |
6d103865 SK |
1827 | LEASEQUERY lets you query the DHCP server for information about a lease, |
1828 | using either an IP address, MAC address, or client identifier. Thanks | |
1829 | to a patch from Justin Haddad. | |
1830 | ||
41e45067 DH |
1831 | - DHCPD is now RFC2131 section 4.1 compliant (broadcast to all-ones ip and |
1832 | ethernet mac address) on the SCO platform specifically without any strange | |
1833 | ifconfig hacks. Many thanks go to the Kroger Co. for donating the | |
1834 | hardware and funding the development. | |
6d103865 | 1835 | |
b543fea9 DH |
1836 | - A new common configuration executable statement, execute(), has been |
1837 | added. This permits dhcpd or dhclient to execute a named external | |
1838 | program with command line arguments specified from other configuration | |
1839 | language. Thanks to a patch written by Mattias Ronnblom, gotten to us | |
1840 | via Robin Breathe. | |
1841 | ||
b22de500 DH |
1842 | - A new dhcp server option 'adaptive-lease-time-threshold' has been added |
1843 | which causes the server to substantially reduce lease-times if there are | |
1844 | few (configured percentage) remaining leases. Thanks to a patch submitted | |
1845 | from Christof Chen. | |
1846 | ||
96bbe8c5 SK |
1847 | - Encapsulated option spaces within encapsulated option spaces is now |
1848 | formally supported. | |
1849 | ||
b8221d95 DH |
1850 | Changes since 3.0.6rc1 |
1851 | ||
1852 | - supersede_lease() now requeues leases in their respective hardware | |
1853 | address hash bucket. This mirrors client identifier behaviour. | |
1854 | ||
c1e6c832 DH |
1855 | Changes since 3.0.5 |
1856 | ||
f546c28b DH |
1857 | - Assorted fixes for broken network devices: Packet length is now |
1858 | determined from the IP header length field to finally calculate the | |
1859 | UDP payload length, because some NIC drivers return more data than | |
5a22eb63 | 1860 | they actually received. |
f546c28b DH |
1861 | |
1862 | - UDP packets are now stored in aligned data structures. | |
1863 | ||
c1e6c832 DH |
1864 | - A logic error in omapi interface code was repaired that might result in |
1865 | incorrectly indicating 'up' state when any flags were set, rather than | |
23e10d37 DH |
1866 | specifically the INTERFACE_REQUESTED flag. Thanks to a patch from |
1867 | Jochen Voss which got to us via Andrew Pollock at Debian. | |
c1e6c832 | 1868 | |
75ab3070 DH |
1869 | - A reference leak on binding scopes set by ddns updates was repaired. |
1870 | ||
d69fb6a8 | 1871 | - A memory leak in the minires_nsendsigned() function call was repaired. |
23e10d37 | 1872 | Effectively, this leaked ~176 bytes per DDNS update. |
d69fb6a8 | 1873 | |
02428754 DH |
1874 | - In the case where an "L2" DHCP Relay Agent (one that does not set giaddr) |
1875 | was directly attached to the same broadcast domain as the DHCP server, | |
1876 | the RFC3046 relay agent information option was not being returned to the | |
1877 | relay in the server's replies. This was fixed; the dhcp server no longer | |
1878 | requires the giaddr to reply with relay agent information. Note that | |
1879 | this also improves compatibility with L2 devices that "intercept" DHCP | |
1880 | packets and expect relay agent information even in unicast (renewal) | |
23e10d37 DH |
1881 | replies. Thanks to a patch from Pekka Silvonen. |
1882 | ||
1883 | - A bug was fixed where the BOOTP header 'sname' field had a value, the | |
1884 | copy written to persistent storage was actually the contents of the | |
1885 | 'file' field. | |
02428754 | 1886 | |
ecde99a3 DH |
1887 | - A bug was fixed where the nwip virtual option space was referencing |
1888 | the fqdn option's virtual option space's option cache. | |
1889 | ||
67674ffb DH |
1890 | - Timestamp parsing errors that indicated missing "minutes" fields rather |
1891 | than the actually missing "seconds" fields have been repaired thanks to | |
1892 | a patch from Kevin Steves. | |
1893 | ||
830ebc4c DH |
1894 | - A grammar error in the dhclient.8 manpage was repaired thanks to a patch |
1895 | from Chris Wagner. | |
1896 | ||
c759db75 DH |
1897 | - Several spelling typos were repaired, and some cross-references to other |
1898 | relevant documents were included in the manpages, thanks to a patch | |
1899 | by Andrew Pollock which got to us via Tomas Pospisek. | |
1900 | ||
9aa3f3a5 DH |
1901 | - Some bugs were fixed in the 'emergency relay agent options hologram' |
1902 | which is used to retain relay agent option contents from when the | |
1903 | client was in INIT or REBIND states. This should solve problems where | |
1904 | relay agent options were not echoed from the server, even when giaddr | |
1905 | was set. | |
1906 | ||
3d0c598a DH |
1907 | - dhclient now closes its descriptor to dhclient.leases prior to executing |
1908 | dhclient-script. Thanks to a patch from Tomas Pospisek. | |
1909 | ||
d5b6835f DH |
1910 | - The server's "by client-id" and "by hardware address" hash table lists |
1911 | are now sorted according to the preference to re-allocate that lease to | |
1912 | returning clients. This should eliminate pool starvation problems | |
1913 | arising when "INIT" clients were given new leases rather than presently | |
1914 | active ones. | |
1915 | ||
02428754 | 1916 | Changes since 3.0.5rc1 |
0a73b7b6 | 1917 | |
901306d5 | 1918 | - A bug was repaired in fixes to the dhclient, which sought to run the |
0a73b7b6 SK |
1919 | dhclient-script with the 'EXPIRE' state should it receive a NAK in |
1920 | response to a REQUEST. The client now iterates the PREINIT state | |
1921 | after the EXPIRE state, so that interfaces that might be configured | |
1922 | 'down' can be brought back 'up' and initialized. | |
1923 | ||
87a08ccc DH |
1924 | - DHCPINFORM handling for clients that properly set ciaddr and come to the |
1925 | server via a relay aget has been repaired. | |
1926 | ||
6da113fb DH |
1927 | Changes since 3.0.4 |
1928 | ||
1929 | - A warning that host statements declared within subnet or shared-network | |
1930 | scopes are actually global has been added. | |
1931 | ||
1932 | - The default minimum lease time (if min-lease-time was not specified) | |
1933 | was raised from 0 to 300. 0 is not thought to be sensible, and is | |
1934 | known to be damaging. | |
1935 | ||
1936 | - Added additional fatal error sanity checks surrounding lease binding | |
1937 | state count calculations (free/active counts used for failover pool | |
1938 | balancing). | |
1939 | ||
dcc557db DH |
1940 | - Some time value size fixes in 3.0.4 brought on from FreeBSD /usr/ports were |
1941 | misapplied to server values rather than client values. The server no longer | |
1942 | advertises 8-byte lease-time options when on 64-bit platforms. | |
1943 | ||
1b2ab55f DH |
1944 | - A bug where leases not in ACTIVE state would get billed to billed classes |
1945 | (classes with lease limitations) was fixed. Non-active leases OFFERed | |
1946 | to clients are no longer billed (but billing is checked before offering). | |
1947 | ||
e48891e8 DH |
1948 | - The dhcpd.conf.5 manpage was updated in regard to the ddns-domainname |
1949 | configuration option - the default configuration and results should be | |
1950 | more clear now. | |
1951 | ||
6cbc6629 DH |
1952 | - If the dhclient were to receive a DHCPNAK while it was in the RENEW |
1953 | state (and consequently, had an active, 'bound' address and related | |
1954 | configuration options), it would fail to 'tear down' this information | |
1955 | before proceeding into INIT state. dhclient now iterates the dhclient- | |
1956 | script with the 'EXPIRE' action to cause these teardowns prior to entering | |
1d3bfb17 | 1957 | INIT state. Thanks to a patch from Chris Zimmerman. |
6cbc6629 | 1958 | |
c5fec5fa DH |
1959 | - The omapi.1 manpage had some formatting errors repaired thanks to a patch |
1960 | from Yoshihiko Sarumaru. | |
1961 | ||
33e1cb2b DH |
1962 | - A few lines of code that were failover-specific were moved within |
1963 | #if defined() clauses so that compilation without failover could be | |
1964 | made possible. | |
1965 | ||
2bddf829 DH |
1966 | - The log message emitted when the 'leased-address' value was not available |
1967 | in dhcpd.conf "executable statements" has been updated to be more helpful. | |
1968 | Manpage information for this value has also been updated. | |
1969 | ||
87578987 DH |
1970 | - Abandoned or dissociated (err condition) leases now remove any related |
1971 | dynamic dns bindings. Thanks to a patch from Patrick Schoo. | |
1972 | ||
e77c575f DH |
1973 | - Attempting to write a new lease file to replace a corrupt (due to |
1974 | encountering non-retryable errors during writing) lease file should | |
1975 | no longer result in an infinite recursion. | |
1976 | ||
2178df03 DH |
1977 | - Host declaration hardware addresses and client identifiers may only be |
1978 | configured once. dhcpd will now fail to load config files that specify | |
1979 | multiple identifiers (previous versions would silently over-ride the | |
1980 | value with the later configured value). | |
1981 | ||
d5341d9b SK |
1982 | - Several option codes that have been allocated since our last release |
1983 | have been named and documented. | |
1984 | ||
1985 | - Option names of the form "unknown-123" have been removed from the in- | |
1986 | memory hash tables. In order to support options of these names that | |
1987 | may appear in dhclient.leases or similar in previous versions, the | |
1988 | parser will now find the new option code definition, or mock up a | |
1989 | generic option code definition. This should result in a smooth | |
1990 | transition from one name to the other, as the new name is used to | |
1991 | write new output. | |
1992 | ||
6da113fb DH |
1993 | Changes since 3.0.4rc1 |
1994 | ||
1995 | - The dhcp-options.5 manpage was updated to correct indentation errors | |
1996 | thanks to a patch from Jean Delvare. | |
1997 | ||
1998 | Changes since 3.0.4b3 | |
1999 | ||
2000 | - Some manual pages were clarified pursuant to discussion on the dhcp-server | |
2001 | mailing list. | |
2002 | ||
88cd8aca DH |
2003 | Changes since 3.0.4b2 |
2004 | ||
45d545f0 | 2005 | - Null-termination sensing for certain clients that unfortunately require |
88cd8aca DH |
2006 | it in DHCPINFORM processing was repaired. |
2007 | ||
2008 | - The host-name option and a few others were moved from "X" format to "t" | |
2009 | format to be compatible with new NULL handling functions. | |
2010 | ||
2011 | - DHCPINFORM processing is a little more careful about return addressing | |
2012 | its responses, or if responding via a relay. The INFORM related | |
2013 | messages also log the 'effective client ip address' rather than the | |
2014 | client's supplied ciaddr (since some clients produce null ciaddrs). | |
2015 | ||
2016 | - The server was inappropriately sending leases to the RESET state in the | |
2017 | event that multiple active leases were found to match a singly-identified | |
2018 | client. This was changed to RELEASED (by accepting a different, ACTIVE | |
2019 | binding, the client is implicitly releasing its lease). This repairs a | |
2020 | bug wherein secondary servers in failover pairs detecting this condition | |
2021 | move leases to RESET, and primaries refuse to accept that state | |
2022 | transition (properly). | |
2023 | ||
2024 | - The memset-after-dmalloc() changes made in 3.0.4b1 have been backed out. | |
2025 | ||
2026 | Changes since 3.0.4b1 | |
2027 | ||
2028 | - Command line parsing in omshell was repaired - it no longer closes | |
2029 | STDIN after reading one line. | |
2030 | ||
2031 | - The resolver library no longer closes the /etc/resolv.conf file | |
2032 | descriptor it opened twice. | |
2033 | ||
2034 | - Changes to trailing NULL removal in 't' option-atoms has been rethought, | |
2035 | it now includes 'd' (domain name) types, and tries hard not to rewind an | |
2036 | option beyond the start of the text field it is un-terminating. | |
2037 | ||
2038 | Changes since 3.0.3 | |
2039 | ||
2040 | - A DDNS update handling function was misusing the DNS error codes, rather | |
2041 | than the internal generic result enumeration. The result is a confusing | |
2042 | syslog line, logging the wrong condition. | |
2043 | ||
2044 | - The DHCP Server was not checking pool balance in the case where it brought | |
2045 | a non-ACTIVE lease out of storage for a client that was returning to use | |
2046 | a lease it once had long ago, and had since expired. | |
2047 | ||
2048 | - Failover peers no longer bother to look for free leases to allocate when | |
2049 | they already found the client's ACTIVE lease. DISCOVERs are load balanced | |
98bd7ca0 | 2050 | whether freely-allocated or not, unless the server doubts the peer has |
88cd8aca DH |
2051 | leases to allocate. |
2052 | ||
2053 | - Fixed a bug in dhcrelay agent addition code that suppressed trailing | |
45d545f0 | 2054 | PAD options - it was suppressing only one trailing PAD option, rather |
88cd8aca DH |
2055 | than the entire block of them. |
2056 | ||
3a16098f DH |
2057 | ! Fixed some unlikely overlapping-region memcpy() bugs in dhcrelay agent |
2058 | option addition and stripping code. Added a few sanity checks. Although | |
2059 | highly improbable, due to requiring the reception of a DHCP datagram well | |
2060 | in excess of all known to be used physical MTU limitations, it is possible | |
2061 | this may have been used in a stack overflow security vulnerability. Thanks | |
2062 | to a patch from infamous42md. | |
2063 | ||
2064 | ! Added some sanity checks to OMAPI connection/authentication code. | |
2065 | Although highly improbable, due to having to deliver in excess of 2^32 | |
2066 | bytes of data via the OMAPI channel, not to mention requiring dhcpd to | |
2067 | be able to malloc() a memory region 2^32 bytes in size, it was possible | |
2068 | this might have resulted in a heap overflow security vulnerability. | |
2069 | Thanks to a patch from infamous42md. | |
88cd8aca DH |
2070 | |
2071 | - dmalloc() memset()'s the non-debug (data) portion of the allocated | |
2072 | memory to zero. Code that memset()'s the result returned by dmalloc() to | |
2073 | zero is redundant. These redundancies were removed. | |
2074 | ||
2075 | - Some type declaration corrections to u_int16_t were made in common/tr.c | |
4b97eaff | 2076 | (Token Ring support) thanks to a patch from Jason Vas Dias at Red Hat. |
88cd8aca DH |
2077 | |
2078 | - A failover bug that was allowing leases that EXPIRED or were RELEASED | |
2079 | where tsfp and tstp are identical timestamps to languish in these | |
2080 | transitional states has been repaired. As a side effect, lease | |
2081 | databases should be kept more consistent overall, not just for these | |
2082 | transitional states. | |
2083 | ||
2084 | - If the lease db is deleted out from under the daemon, and it moves to rewrite | |
2085 | the db, it will go ahead with the operation and move the new db into place | |
2086 | once it detects the old db does not exist. | |
2087 | ||
2088 | - dhclient now ignores IRDA, SIT, and IEEE1394 network interfaces, as it | |
2089 | is either nonsensical or (in the case of IEEE1394) is not known to support | |
2090 | these interfaces. Thanks to Marius Gedminas and Andrew Pollock of Debian. | |
2091 | ||
2092 | - Some previously undocumented reasons for dhclient-script invoking has | |
45d545f0 | 2093 | been documented in the dhclient-script.8 manpage. |
88cd8aca DH |
2094 | |
2095 | - Failover potential expiry calculations (TSTP) have been corrected. Results | |
2096 | should be substantially more consistent, and proper given the constraints. | |
2097 | ||
2098 | - Adjusted lease state validation checks in potential-conflict, to | |
2099 | account for possible clock skew similarly to normal state, and several | |
2100 | previously illegal transitions were made legal (ex: active->released). | |
2101 | ||
2102 | - An impossible sanity check was removed from omapi/buffer.c, thanks to a | |
2103 | patch from 'infamous42md'. | |
2104 | ||
2105 | - An OMAPI host/network byte order problem in lease time values has been | |
2106 | repaired. | |
2107 | ||
2108 | - Several minor bugs, largely relating to treating 8-byte time values as | |
2109 | 4-byte entities, have been repaired after careful review of the FreeBSD | |
2110 | ports collection's patch set. Thanks to the nameless entities who have | |
2111 | contributed to the FreeBSD ports. | |
2112 | ||
2113 | - When writing a trace file, the file is now created with permissions 0600, | |
2114 | to help administrators avoid accidentally publicising sensitive config | |
2115 | data. | |
2116 | ||
2117 | - The calculation of the maximum size of DHCP packets no longer includes | |
2118 | Ethernet framing overhead. The result is that the 'Maximum Message | |
2119 | Size' option advertised by clients, or the default value 576, is no | |
2120 | longer reduced by 14 bytes, and instead directly reflects the IP level | |
2121 | MTU (and the default, minimum allowed IP MTU of 576). | |
2122 | ||
2123 | - The special status of RELEASED/EXPIRED/RESET leases when a server | |
2124 | is operating in partner-down was fixed. It no longer requires a | |
2125 | lease be twice the MCLT beyond STOS to 'reallocate', and the expiry | |
2126 | event to turn these into FREE leases without peer acknowledgement | |
2127 | (after STOS+MCLT) has been repaired. | |
2128 | ||
2129 | - Compilation on older Solaris systems (lacking /usr/include/sys/int_types.h) | |
2130 | has been repaired. | |
2131 | ||
2132 | - "append"ing a string onto the end of a "t" type option (such as the | |
2133 | domain-name field) that had been improperly NULL-terminated by the | |
2134 | DHCP server will no longer result in a truncated string containing | |
2135 | only the option from the server, and not the expected appended value. | |
4b97eaff | 2136 | Thanks to a patch from Jason Vas Dias at Red Hat. |
88cd8aca DH |
2137 | |
2138 | - File handlers on configuration state (config files and lease dbs) should | |
98bd7ca0 | 2139 | be treated consistently, regardless of whether TRACING is defined or not. |
88cd8aca | 2140 | |
45d545f0 | 2141 | - The Linux build environment has had some minor improvements - better |
88cd8aca DH |
2142 | sensing of 64-bit pointer sizes (only used for establishing an icmp_id), |
2143 | and corrections to #if operators regarding LINUX_MAJOR should it ever | |
2144 | move to 3.[01].x. | |
2145 | ||
2146 | - The server now tries harder to survive the condition where it is unable | |
2147 | to open a new lease file to rewrite the lease state database. | |
2148 | ||
c75473d8 DH |
2149 | Changes since 3.0.3b3 |
2150 | ||
2151 | - dhclient.conf documentation for interface {} was updated to reflect recent | |
2152 | discussion on the dhcp-hackers mailing list. | |
2153 | ||
2154 | - In response to reports that the software does not compile on GCC 4.0.0, | |
2155 | -Werror was removed from Makefile.conf for all platforms that used it. | |
2156 | We will address the true problem in a future release; this is a temporary | |
2157 | workaround. | |
2158 | ||
2159 | Changes since 3.0.3b2 | |
2160 | ||
2161 | - An error in code changes introduced in 3.0.3b2 was corrected, which caused | |
2162 | static BOOTP clients to receive random addresses. | |
2163 | ||
2164 | Changes since 3.0.3b1 | |
2165 | ||
2166 | - A bug was fixed in BOOTPREQUEST handling code wherein stale references to | |
2167 | host records would be left behind on leases that were not allocated to the | |
2168 | client currently booting (eg in the case where the host was denied booting). | |
2169 | ||
2170 | - The dhcpd.conf.5 manpage was updated to be more clear in regards to | |
2171 | multiple host declarations (thanks to Vincent McIntyre). 'Interim' style | |
2172 | dynamic updates were also retouched. | |
2173 | ||
98311e4b DH |
2174 | Changes since 3.0.2 |
2175 | ||
2176 | - A bug was fixed where a server might load balance a DHCP REQUEST to its | |
45d545f0 | 2177 | peer after already choosing not to load balance the preceding DISCOVER. |
98311e4b DH |
2178 | The peer cannot allocate the originating server's lease. |
2179 | ||
2180 | - In the case where a secondary server lost its stable storage while the | |
2181 | primary was still in communications-interrupted, and came back online, | |
2182 | the lease databases would not be fully transferred to the secondary. | |
2183 | This was due to the secondary errantly sending an extra UPDREQ message | |
2184 | when the primary made its state transition to PARTNER-DOWN known. | |
2185 | ||
2186 | - The package will now compile cleanly in gcc 3.3 and 3.4. As a side effect, | |
2187 | lease structures will be 9 bytes smaller on all platforms. Thanks to | |
4b97eaff | 2188 | Jason Vas Dias at Red Hat. |
98311e4b DH |
2189 | |
2190 | - Interface discovery code in DISCOVER_UNCONFIGURED mode is now | |
2191 | properly restricted to only detecting broadcast interfaces. Thanks | |
4b97eaff | 2192 | to a patch from Jason Vas Dias at Red Hat. |
98311e4b DH |
2193 | |
2194 | - decode_udp_ip_header was changed so that the IP address was copied out | |
2195 | to a variable, rather than referenced by a pointer. This enforces 4-byte | |
2196 | alignment of the 32-bit IP address value. Thanks to a patch from Dr. | |
2197 | Peter Poeml. | |
2198 | ||
2199 | - An incorrect log message was corrected thanks to a patch from | |
2200 | Dr. Peter Poeml. | |
2201 | ||
2202 | - A bug in DDNS was repaired, where if the server's first DDNS action was | |
2203 | a DDNS removal rather than a DDNS update, the resolver library's | |
2204 | retransmit timer and retry timer was set to the default, implying a | |
2205 | 15 second timeout interval. Which is a little excessive in a synchronous, | |
2206 | single-threaded system. In all cases, ISC DHCP should now hold fast to | |
2207 | a 1-second timeout, trying only once. | |
2208 | ||
2209 | - The siaddr field was being improperly set to the server-identifier when | |
2210 | responding to DHCP messages. RFC2131 clarified the siaddr field as | |
2211 | meaning the 'next server in the bootstrap process', eg a tftp server. | |
2212 | The siaddr field is now left zeroed unless next-server is configured. | |
2213 | ||
2214 | - mockup_lease() could have returned in an error condition (or in the | |
2215 | condition where no fixed-address was found matching the shared | |
2216 | network) with stale references to a host record. This is probably not | |
2217 | a memory leak since host records generally never die anyway. | |
2218 | ||
2219 | - A bug was repaired where failover servers would let stale client identifiers | |
2220 | persist on leases that were reallocated to new clients not sending an id. | |
2221 | ||
2222 | - Binding scopes ("set var = value;") are now removed from leases allocated | |
2223 | by failover peers if the lease had expired. This should help reduce the | |
2224 | number of stale binding scopes on leases. | |
2225 | ||
2226 | - A small memory leak was closed involving client identifiers larger than | |
2227 | 7 bytes, and failover. | |
2228 | ||
2229 | - Configuring a subnet in dhcpd.conf with a subnet mask of 32 bits might | |
2230 | cause an internal function to overflow heap. Thanks to Jason Vas Dias | |
4b97eaff | 2231 | at Red Hat. |
98311e4b DH |
2232 | |
2233 | - Some inconsistencies in treating numbers that the lexer parsed as 'NUMBER' | |
2234 | or 'NUMBER_OR_NAME' was repaired. Hexadecimal parsing is affected, and | |
2235 | should work better. | |
2236 | ||
2237 | - In several cases, parse warnings were being issued before the lexical | |
2238 | token had been advanced to the token whose value was causing an error... | |
2239 | causing parse warnings to claim the problem is on the wrong token. | |
2240 | ||
2241 | - Host declarations matching on client identifier for dynamic leases will | |
2242 | no longer match fixed-address host declarations (this is now identical | |
2243 | to behaviour for host records matching on hardware address). | |
2244 | ||
2245 | Changes since 3.0.2rc3 | |
2246 | ||
2247 | - A previously undocumented configuration directive, 'local-address', | |
2248 | was documented in the dhcpd.conf manpage. | |
2249 | ||
2250 | Changes since 3.0.2rc2 | |
2251 | ||
45d545f0 | 2252 | - Two variables introduced in 3.0.2b1 were used without being initialized |
98311e4b DH |
2253 | in the case where neither the FILE nor SNAME fields were available for |
2254 | overloading. This was repaired. | |
2255 | ||
2256 | - A heretofore believed to be impossible corner case of the option | |
2257 | overloading implementation turned out to be possible ("Unable to sort | |
2258 | overloaded options after 10 tries."). The implementation was reworked | |
2259 | to consider the case of an option so large it would require more than | |
2260 | three chunks to fit. | |
2261 | ||
2262 | - Many other instances of variables being used without being initialized | |
2263 | were repaired. | |
2264 | ||
2265 | - An uninitialized variable in omapi_io_destroy() led to the discovery | |
2266 | that this function may result in orphaned pointers (and hence, a memory | |
2267 | leak). | |
2268 | ||
2269 | Changes since 3.0.2rc1 | |
2270 | ||
2271 | - allocate_lease() was rewritten to repair a bug in which the server would | |
2272 | try to allocate an ABANDONED lease when FREE leases were available. | |
2273 | ||
2274 | Changes since 3.0.2b1 | |
2275 | ||
2276 | - Some dhcp-eval.5 manpage formatting was repaired. | |
2277 | ||
2278 | Changes since 3.0.1 | |
2279 | ||
2280 | - A bug was fixed in the server's 'option overloading' implementation, | |
2281 | where options loaded into the 'file' and 'sname' packet fields were | |
2282 | not aligned precisely as rfc2131 dictates. | |
2283 | ||
2284 | - The FreeBSD client script was changed to support the case where a domain | |
2285 | name was not provided by the server. | |
2286 | ||
2287 | - A memory leak in 'omshell' per each command line parsed was | |
2288 | repaired, thanks to a patch from Jarkko Torppa. | |
2289 | ||
2290 | - Log functions writing to stderr were adjusted to use the STDERR_FILENO | |
2291 | system definition rather than '2'. This is a no-op for 90% of platforms. | |
2292 | ||
2293 | - One call to trace_write_packet_iov() counted the number of io vectors | |
2294 | incorrectly, causing inconsistent tracefiles. This was fixed. | |
2295 | ||
2296 | - Some expression parse failure memory leaks were closed. | |
2297 | ||
2298 | - A host byte order problem in tracefiles was repaired. | |
2299 | ||
2300 | - Pools configured in DHCPD for failover possessing permission lists that | |
2301 | previously were assumed to not include dyanmic bootp clients are now | |
2302 | a little more pessimistic. The result is, dhcpd will nag you about just | |
2303 | about most pools that possess a 'allow' statement with no 'deny' that | |
2304 | would definitely match a dynamic bootp client. | |
2305 | ||
2306 | - The 'ddns-update-style' configuration warning bit now insists that | |
2307 | the configuration be globally scoped. | |
2308 | ||
2309 | - Two memory leaks in dhclient were closed thanks to a patch from Felix | |
2310 | Farkas. | |
2311 | ||
2312 | - Some minor but excellently pedantic documentation errors were fixed | |
2313 | thanks to a patch from Thomas Klausner. | |
2314 | ||
2315 | - Bugs in operator precedence in executable statements have been repaired | |
2316 | once again. More legal syntaxes should be parsed legally. | |
2317 | ||
2318 | - Failing to initialize a tracefile for any reason if a tracefile was | |
2319 | specified is now a fatal error. Thanks to a patch from Albert Herranz. | |
2320 | ||
2321 | - Corrected a bug in which the number of leases transferred as calculated | |
2322 | by the failover primary and sent to peers in POOLRESP responses may be | |
2323 | incorrect. This value is not believed to be used by other failover | |
2324 | implementations, excepting perhaps as logged information. | |
2325 | ||
2326 | - Corrected a bug in which 'dhcp_failover_send_poolresp()' was in fact | |
2327 | sending POOLREQ messages instead of POOLRESP mesasges. This message | |
2328 | was essentially ignored since failover secondaries effectively do not | |
2329 | respond to POOLREQ messages. | |
2330 | ||
2331 | - Type definitions for various bitwidths of integers in the sunos5-5 | |
2332 | build of ISC DHCP have been fixed. It should compile and run more | |
2333 | easily when built in 64-bit for this platform. | |
2334 | ||
2335 | - "allow known-clients;" is now a legal syntax, to avoid confusion. | |
2336 | ||
2337 | - If one dhcp server chooses to 'load balance' a request to its failover | |
2338 | peer, it first checks to see if it believes said peer has a free | |
2339 | lease to allocate before ignoring the DISCOVER. | |
2340 | ||
2341 | - log() was logging a work buffer, rather than the value returned by | |
2342 | executing the statements configured by the user. In some cases, | |
2343 | the work buffer and the intended results were the same. In some other | |
2344 | cases, they were not. This was fixed thanks to a patch from Gunnar | |
2345 | Fjone and directconnect.no. | |
2346 | ||
2347 | - Compiler warnings for some string type conversions was fixed, thanks | |
2348 | to Andreas Gustafsson. | |
2349 | ||
2350 | - The netbsd build environments were simplified to one, in which | |
2351 | -Wconversion is not used, thanks to Andreas Gustafsson. | |
2352 | ||
2353 | - How randomness in the backoff-cutoff dhclient configuration variable | |
2354 | is implemented was better documented in the manpage, and the behaviour | |
2355 | of dhclient in REQUEST timeout handling was changed to match that of | |
2356 | DISCOVER timeout handling. | |
2357 | ||
2358 | - Omapi was hardened against clients that pass in null values, thanks | |
2359 | to a patch from Mark Jason Dominus. | |
2360 | ||
2361 | - A bug was fixed in dhclient that kept it from doing client-side | |
2362 | ddns updates. Thanks to a patch from Andreas Gustafsson, which | |
2363 | underwent some modification after review by Jason Vas Dias. | |
2364 | ||
2365 | - Failover implementations disconnected due to the network between | |
2366 | them (rather than one of the two shutting down) will now try to | |
2367 | re-establish the failover connection every 5 seconds, rather than | |
2368 | to simply try once and give up until one of them is restarted. | |
2369 | Thanks to a patch from Ulf Ekberg from Infoblox, and field testing | |
2370 | by Greger V. Teigre which led to an enhancement to it. | |
2371 | ||
2372 | - A problem that kept DHCP Failover secondaries from tearing down | |
2373 | ddns records was repaired. Thanks to a patch from Ulf Ekberg from | |
2374 | Infoblox. | |
2375 | ||
2376 | - 64bit pointer sizes are detected properly on FreeBSD now. | |
2377 | ||
2378 | - A bug was repaired where the DHCP server would leave stale references | |
2379 | to host records on leases it once thought about offering to certain | |
2380 | clients. The result would be to apply host and 'known' scopes to the | |
2381 | wrong clients (possibly denying booting). NOTE: The 'mis-host' patch | |
2382 | that was being circulated as a workaround is not the way this bug was | |
2383 | fixed. If you were a victim of this bug in 3.0.1, you are cautioned | |
2384 | to proceed carefully and see if it fixes your problem. | |
2385 | ||
2386 | - A bug was repaired in the server's DHCPINFORM handling, where it | |
2387 | tried to divine the client's address from the source packet and | |
2388 | would get it wrong. Thanks to Anshuman Singh Rawat. | |
2389 | ||
2390 | - A log message was introduced to help illuminate the case where the | |
2391 | server was unable to find a lease to assign to any BOOTP client. | |
2392 | Thanks to Daniel Baker. | |
2393 | ||
2394 | - A minor dhcpd.conf.5 manpage error was fixed. | |
2395 | ||
2396 | Changes since 3.0.1rc14 | |
2397 | ||
2398 | - The global variable 'cur_time' was centralized and is now uniformly of a | |
2399 | type #defined in system-dependent headers. It had previously been defined | |
2400 | in one of many places as a 32-bit value, and this causes mayhem on 64-bit | |
2401 | big endian systems. It probably wasn't too healthy on little endian | |
2402 | systems either. | |
2403 | ||
2404 | - A printf format string error introduced in rc14 was repaired. | |
2405 | ||
2406 | - AIX system-dependent header file was altered to only define NO_SNPRINTF | |
2407 | if the condition used to #ifdef in vsnprintf in AIX' header files | |
2408 | is false. | |
2409 | ||
2410 | - The Alpha/OSF system-dependent header file was altered to define | |
2411 | NO_SNPRINTF on OS revisions older than 4.0G. | |
2412 | ||
2413 | - omapip/test.c had string.h added to its includes. | |
2414 | ||
2415 | Changes since 3.0.1rc13 | |
2416 | ||
2417 | ! CAN-2004-0460 - CERT VU#317350: Five stack overflow exploits were closed | |
2418 | in logging messages with excessively long hostnames provided by the | |
2419 | clients. It is highly probable that these could have been used by | |
2420 | attackers to gain arbitrary root access on systems using ISC DHCP 3.0.1 | |
2421 | release candidates 12 or 13. Special thanks to Gregory Duchemin for | |
2422 | both finding and solving the problem. | |
2423 | ||
2424 | ! CAN-2004-0461 - CERT VU#654390: Once the above was closed, an opening | |
45d545f0 | 2425 | in log_*() functions was evidenced, on some specific platforms where |
98311e4b DH |
2426 | vsnprintf() was not believed to be available and calls were wrapped to |
2427 | sprintf() instead. Again, credit goes to Gregory Duchemin for finding | |
2428 | the problem. Calls to snprintf() are now linked to a distribution-local | |
2429 | snprintf implementation, only in those cases where the architecture is | |
2430 | not known to provide one (see includes/cf/[arch].h). If you experience | |
2431 | linking problems with snprintf/vsnprintf or 'isc_print_' functions, this | |
2432 | is where to look. This vulnerability did not exist in any previously | |
2433 | published version of ISC DHCP. | |
2434 | ||
2435 | - Compilation on hpux 11.11 was repaired. | |
2436 | ||
2437 | - 'The cross-compile bug fix' was backed out. | |
2438 | ||
2439 | Changes since 3.0.1rc12 | |
2440 | ||
2441 | - Fixed a bug in omapi lease lookup function, to form the hardware | |
2442 | address for the hash lookup correctly, thanks to a patch from | |
2443 | Richard Hirst. | |
2444 | ||
2445 | - Fixed a bug where dhcrelay was sending relayed responses back to the | |
2446 | broadcast address, but with the source's unicast mac address. Should | |
2447 | now conform to rfc2131 section 4.1. | |
2448 | ||
2449 | - Cross-compile bug fix; use $(AR) instead of ar. Thanks to Morten Brorup. | |
2450 | ||
2451 | - Fixed a crash bug in dhclient where dhcpd servers that do not provide | |
2452 | renewal times results in an FPE. As a side effect, dhclient can now | |
2453 | properly handle 0xFFFFFFFF (-1) expiry times supplied by servers. Thanks | |
2454 | to a patch from Burt Silverman. | |
2455 | ||
2456 | - The 'ping timeout' debugs from rc12 were removed to -DDEBUG only, | |
45d545f0 | 2457 | and reformatted to correct a compilation error on Solaris platforms. |
98311e4b DH |
2458 | |
2459 | - A patch was applied which fixes a case where leases read from the | |
2460 | leases database do not properly over-ride previously read leases. | |
2461 | ||
2462 | - dhcpctl.3 manpage was tweaked. | |
2463 | ||
2464 | Changes since 3.0.1rc11 | |
2465 | ||
2466 | - A patch from Steve Campbell was applied with minor modifications to | |
2467 | permit reverse dns PTR record updates with values containing spaces. | |
2468 | ||
2469 | - A patch from Florian Lohoff was applied with some modifications to | |
2470 | dhcrelay. It now discards packets whose hop count exceeds 10 by default, | |
2471 | and a command-line option (-c) can be used to set this threshold. | |
2472 | ||
2473 | - A failover bug relating to identifying peers by name length instead of | |
2474 | by name was fixed. | |
2475 | ||
45d545f0 | 2476 | - Declaring failover configs within shared-network statements should no |
98311e4b DH |
2477 | longer result in error. |
2478 | ||
2479 | - The -nw command line option to dhclient now works. | |
2480 | ||
2481 | - Thanks to a patch from Michael Richardson: | |
2482 | - Some problems with long option processing have been fixed. | |
2483 | - Some fixes to minires so that updates of KEY records will work. | |
2484 | ||
2485 | - contrib/ms2isc was updated by Shu-Min Chang of the Intel Corporation. | |
2486 | see contrib/ms2isc/readme.txt for revision notes. | |
2487 | ||
2488 | - Dhclient no longer uses shell commands to kill another instance of | |
2489 | itself, it sends the signal directly. Thanks to a patch from Martin | |
2490 | Blapp. | |
2491 | ||
2492 | - The FreeBSD dhclient-script was changed so that a failure to write to | |
2493 | /etc/resolv.conf does not prematurely end the script. This keeps dhclient | |
2494 | from looping infinitely when this is the case. Thanks to a patch from | |
2495 | Martin Blapp. | |
2496 | ||
2497 | - A patch from Bill Stephens was applied which resolves a problem with lease | |
2498 | expiry times in failover configurations. | |
2499 | ||
2500 | - A memory leak in configuration parsing was closed thanks to a patch from | |
2501 | Steve G. | |
2502 | ||
2503 | - The function which discovers interfaces will now skip non-broadcast or | |
2504 | point-to-point interfaces, thanks to a patch from David Brownlee. | |
2505 | ||
2506 | - Options not yet known by the dhcpd or dhclient have had their names | |
2507 | changed such that they do not contain # symbols, in case they should ever | |
2508 | appear in a lease file. An option that might have been named "#144" is | |
2509 | now "unknown-144". | |
2510 | ||
2511 | - Another patch from Bill Stephens which allows the ping-check timeout to | |
2512 | be configured as 'ping-timeout'. Defaults to 1. | |
2513 | ||
2514 | Changes since 3.0.1rc10 | |
2515 | ||
2516 | - Potential buffer overflows in minires repaired. | |
2517 | ||
2518 | - A change to the linux client script to use /bin/bash, since /bin/sh may | |
2519 | not be bash. | |
2520 | ||
2521 | - Some missing va_end cleanups thanks to a patch from Thomas Klausner. | |
2522 | ||
2523 | - A correction of boolean parsing syntax validation - some illegal syntaxes | |
2524 | that worked before are now detected and produce errs, some legal syntaxes | |
2525 | that errored before will now work properly. | |
2526 | ||
2527 | - Some search-and-replace errors that caused some options to change their | |
2528 | names was repaired. | |
2529 | ||
2530 | - Shu-min Chang of the Intel corporation has contributed a perl script and | |
2531 | module that converts the MS NT4 DHCP configuration to a ISC DHCP3 | |
2532 | configuration file. | |
2533 | ||
2534 | - Applied the remainder of the dhcpctl memory leak patch provided by Bill | |
2535 | Squier at ReefEdge, Inc. (groo@reefedge.com). | |
2536 | ||
2537 | - Missing non-optional failover peer configurations will now result in a soft | |
2538 | error rather than a null dereference. | |
2539 | ||
2540 | Changes since 3.0.1rc9 | |
2541 | ||
2542 | - A format string was corrected to fix compiler warnings. | |
2543 | ||
2544 | - A number of spelling corrections were made in the man pages. | |
2545 | ||
2546 | - The dhclient.conf.5 man page was changed to refer to do-forward-updates | |
2547 | rather than a configuration option that doesn't exist. | |
2548 | ||
2549 | - A FreeBSD-specific bug in the interface removal handling was fixed. | |
2550 | ||
2551 | - A Linux-specific Token Ring detection problem was fixed. | |
2552 | ||
2553 | - Hashes removed from as-yet-unknown agent options, having those options | |
2554 | appear in reality before we know about them will no longer produce | |
2555 | self-corrupting lease databases. | |
2556 | ||
2557 | - dhclient will use the proper port numbers now when using the -g option. | |
2558 | ||
2559 | - A order-of-operations bug with 2 match clauses in 1 class statement is | |
2560 | fixed thanks to a patch from Andrew Matheson. | |
2561 | ||
2562 | - Compilation problems on Solaris were fixed. | |
2563 | ||
2564 | - Compilation problems when built with DEBUG or DEBUG_PACKET were repaired. | |
2565 | ||
2566 | - A fix to the dhcp ack process which makes certain group options will be | |
2567 | included in the first DHCPOFFER message was made thanks to a patch from | |
2568 | Ling Gou. | |
2569 | ||
2570 | - A few memory leaks were repaired thanks to patches from Bill Squier at | |
2571 | ReefEdge, Inc. (groo@reefedge.com). | |
2572 | ||
2573 | - A fix for shared-networks that sometimes give clients options for the | |
2574 | wrong subnets (in particular, 'option routers') was applied, thanks to | |
2575 | Ted Lemon for the patch. | |
2576 | ||
2577 | - Omshell's handling of dotted octets as values was changed such that dots | |
2578 | one after the other produce zero values in the integer string. | |
2579 | ||
2580 | Changes since 3.0.1rc8 | |
2581 | ||
2582 | - Fix a format string vulnerability in the server that could lead to a | |
2583 | remote root compromise (discovered by NGSEC Research Team, www.ngsec.com). | |
2584 | ||
2585 | - Add additional support for NetBSD/sparc64. | |
2586 | ||
2587 | - Fix a bug in the command-line parsing of the client. Also, resolve | |
2588 | a memory leak. | |
2589 | ||
2590 | - Add better support for shells other than bash in the Linux client | |
2591 | script. | |
2592 | ||
2593 | - Various build fixes for modern versions of FreeBSD and Linux. | |
2594 | ||
2595 | - Fix a bad bounds check when printing binding state names. | |
2596 | ||
2597 | - Clarify documentation about fixed-address and multiple addresses. | |
2598 | ||
2599 | - Fix a typo in the authoritative error message. | |
2600 | ||
2601 | - Make a log entry when we can't write a billing class. | |
2602 | ||
2603 | - Use conversion targets that are the right size on all architectures. | |
2604 | ||
2605 | - Increment the hop count when relaying. | |
2606 | ||
2607 | - Log a message when lease state is changed through OMAPI. | |
2608 | ||
2609 | - Don't rerun the shared_network when evaluating the pool. | |
2610 | ||
2611 | - Fix a reversed test in the parser. | |
2612 | ||
2613 | - Change the type of rbuf_max. | |
2614 | ||
2615 | - Make FTS_LAST a manifest constant to quiet warnings. | |
2616 | ||
2617 | Changes since 3.0.1rc7 | |
2618 | ||
2619 | - Fix two compiler warnings that are generated when compiling on Solaris | |
2620 | with gcc. These stop the build, even though they weren't actually | |
2621 | errors, because we prefer that our builds generate no warnings. | |
2622 | ||
2623 | Changes since 3.0.1rc6 | |
2624 | ||
2625 | - Don't allow a lease that's in the EXPIRED, RELEASED or RESET state | |
2626 | to be renewed. | |
2627 | ||
2628 | - Implement lease stealing for cases where the primary has fewer leases | |
2629 | than the secondary, as called for by the standard. | |
2630 | ||
2631 | - Add a fudge factor to the lease expiry acceptance code, (suggested | |
2632 | by Kevin Miller of CMU). | |
2633 | ||
2634 | - Fix a bug in permit_list_match that made it much too willing to say | |
2635 | that two permit lists matched. | |
2636 | ||
2637 | - Unless DEBUG_DNS_UPDATES is defined, print more user-friendly (and | |
2638 | also more compact) messages about DNS updates. | |
2639 | ||
2640 | - Fix a bug in generating wire-format domain names for the FQDN option. | |
2641 | ||
2642 | - Fix a bug where the FQDN option would not be returned if the client | |
2643 | requested it, contrary to the standard. | |
2644 | ||
2645 | - On Darwin, use the FreeBSD DHCP client script. | |
2646 | ||
2647 | - On NetBSD/sparc, don't check for casting warnings. | |
2648 | ||
2649 | - Add a flag in the DHCP client to disable updating the client's A | |
2650 | record when sending an FQDN option indicating that the client is | |
2651 | going to update its A record. | |
2652 | ||
2653 | - In the client, don't attempt a DNS update until one second after | |
2654 | configuring the new IP address, and if the update times out, keep | |
2655 | trying until a response, positive or negative, is received from the | |
2656 | DNS server. | |
2657 | ||
2658 | - Fix an uninitialized memory bug in the DHCP client. | |
2659 | ||
2660 | - Apply some FreeBSD-specific bug fixes suggested by Murray Stokely. | |
2661 | ||
2662 | - Fix a bug in ns_parserr(), where it was returning the wrong sort | |
2663 | of result code in some cases (suggested by Ben Harris of the | |
2664 | NetBSD project). | |
2665 | ||
2666 | - Fix a bug in is_identifier(), where it was checking against EOF | |
2667 | instead of the END_OF_FILE token (also suggested by Ben Harris). | |
2668 | ||
2669 | - Fix a bug where if an option universe contained no options, the | |
2670 | DHCP server could dump core (Walter Steiner). | |
2671 | ||
2672 | - Fix a bug in the handling of encapsulated options. | |
2673 | ||
2674 | - Fix a bug that prevented NWIP suboptions from being processed. | |
2675 | ||
2676 | - Delete the FTS_BOOTP and FTS_RESERVED states and implement them | |
2677 | as modifier flags to the FTS_ACTIVE state, as called for in the | |
2678 | failover protocol standard. | |
2679 | ||
2680 | - Fix bugs in the pool merging code that resulted in references and | |
2681 | dereferences of null pointers. This bug had no impact unless the | |
2682 | POINTER_DEBUG flag was defined. | |
2683 | ||
2684 | - In the server, added a do-forward-updates flag that can be used to | |
2685 | disable forward updates in all cases, so that sites that want the | |
2686 | clients to take sole responsibility for updating their A record can | |
2687 | do so. | |
2688 | ||
2689 | - Make it possible to disable optimization of PTR record updates. | |
2690 | ||
2691 | Changes since 3.0.1rc5 | |
2692 | ||
2693 | - Include some new documentation and changes provided by Karl Auer. | |
2694 | ||
2695 | - Add a workaround for some Lexmark printers that send a double-NUL- | |
2696 | terminated host-name option, which would break DNS updates. | |
2697 | ||
2698 | - Fix an off-by-one error in the MAC-address checking code for | |
2699 | DHCPRELEASE that was added in 3.0.1rc5. | |
2700 | ||
2701 | - Fix a bug where client-specific information was not being discarded | |
2702 | from the lease when it expired or was released, resulting in | |
2703 | problems if the lease was reallocated to a different client. | |
2704 | ||
2705 | - If more than one allocation pool is specified that has the same set | |
2706 | of constraints as another allocation pool on the same shared | |
2707 | network, merge the two pools. | |
2708 | ||
2709 | - Don't print an error in fallback_discard, since this just causes | |
2710 | confusion and does not appear to be helping to encourage anyone to | |
2711 | fix this bug. | |
2712 | ||
2713 | Changes since 3.0.1rc4 | |
2714 | ||
2715 | - Fix a bug that would cause the DHCP server to spin if asked to parse | |
2716 | a certain kind of incorrect statement. | |
2717 | ||
2718 | - Fix a related bug that would prevent an error from being reported in | |
2719 | the same case. | |
2720 | ||
2721 | - Additional documentation. | |
2722 | ||
2723 | - Make sure that the hardware address matches the lease when | |
2724 | processing a DHCPRELEASE message. | |
2725 | ||
2726 | Changes since 3.0.1rc3 | |
2727 | ||
2728 | - A minor bug fix in the arguments to a logging function call. | |
2729 | - Documentation update for dhcpd.conf. | |
2730 | ||
adbef119 | 2731 | Changes since 3.0.1rc2 |
98311e4b DH |
2732 | |
2733 | - Allow the primary to send a POOLREQ message. This isn't what the current | |
2734 | failover draft says to do, so we may have to back it out if I can't get the | |
2735 | authors to relent, but the scheme for balancing that's specified in the | |
2736 | current draft seems needlessly hairy, so I'm floating a trial balloon. | |
2737 | The rc1 code did not implement the method described in the draft either. | |
2738 | ||
adbef119 | 2739 | Changes since 3.0.1rc1 |
98311e4b DH |
2740 | |
2741 | - Treat NXDOMAIN and NXRRSET as success when we are trying to delete a | |
2742 | domain or RRSET. This allows the DHCP server to forget about a name | |
2743 | it added to the DNS once it's been removed, even if the DHCP server | |
2744 | wasn't the one that removed it. | |
2745 | ||
2746 | - Install defaults for failover maximum outstanding updates and maximum | |
2747 | silent time. This prevents problems that might occur if these values | |
2748 | were not configured. | |
2749 | ||
2750 | - Don't do DDNS deletes if ddns-update-style is none. | |
2751 | ||
2752 | - Return relay agent information options in DHCPNAK. This prevents DHCPNAK | |
2753 | messages from being dropped when the relay agent information option contains | |
2754 | routing information. | |
2755 | ||
2756 | - Fix a problem where coming up in recover wouldn't result in an update | |
2757 | request being sent. | |
2758 | ||
2759 | - Add some more chatty messages when we start a recovery update and when it's | |
2760 | done. | |
2761 | ||
2762 | - Fix a possible problem where some state might have been left around | |
2763 | after the peer lost contact and regained contact about how many updates | |
2764 | were pending. | |
2765 | ||
2766 | - Don't nix a lease update because of a lease conflict. This test has | |
2767 | never (as far as I know) prevented a mistake, and it appears to cause | |
2768 | problems with failover. | |
2769 | ||
2770 | - Add support in rc history code for keeping a selective history, rather | |
2771 | than a history of all references and dereferences. This code is only used | |
2772 | when extensive additional debugging is enabled. | |
2773 | ||
adbef119 | 2774 | Changes since 3.0 |
98311e4b DH |
2775 | |
2776 | - Make allocators for hash tables. As a side effect, this fixes a memory | |
2777 | smash in the subclass allocation code. | |
2778 | ||
2779 | - Fix a small bug in omshell where if you try to close an object when | |
2780 | no object is open, it dumps core. | |
2781 | ||
2782 | - Fix an obscure coredump that could occur on shutdown. | |
2783 | ||
2784 | - Fix a bug in the recording of host declaration rubouts in the lease file. | |
2785 | ||
2786 | - Fix two potential spins in the host deletion code. | |
2787 | ||
2788 | - Fix a core dump that would happen if an application tried to update | |
2789 | a host object attribute with a null value. | |
2790 | ||
2791 | Changes since 3.0 Release Candidate 12 | |
2792 | ||
2793 | - Fix a memory leak in the evaluation code. | |
2794 | ||
2795 | - Fix an obscure core dump. | |
2796 | ||
2797 | - Print a couple of new warnings when parsing the configuration file | |
2798 | when crucial information is left out. | |
2799 | ||
2800 | - Log "no free leases" as an error. | |
2801 | ||
2802 | - Documentation updates. | |
2803 | ||
2804 | Changes since 3.0 Release Candidate 11 | |
2805 | ||
2806 | - Always return a subnet selection option if one is sent. | |
2807 | ||
2808 | - Fix a warning that was being printed because an automatic data | |
2809 | structure wasn't zeroed. | |
2810 | ||
2811 | - Fix some failover state transitions that were being handled | |
2812 | incorrectly. | |
2813 | ||
2814 | - When supersede_lease is called on a lease whose end time has already | |
2815 | expired, but for which a state transition has not yet been done, do | |
2816 | a state transition. This fixes the case where if the secondary | |
2817 | allocated a lease to a client and the lease "expired" while the | |
2818 | secondary was in partner-down, no expiry event would actually | |
2819 | happen, so the lease would remain active until the primary was | |
2820 | restarted. | |
2821 | ||
2822 | Changes since 3.0 Release Candidate 10 | |
2823 | ||
2824 | - Fix a bug that was preventing released leases from changing state | |
2825 | in failover-enabled pools. | |
2826 | ||
2827 | - Fix a core dump in the client identifier finder code (for host | |
2828 | declarations). | |
2829 | ||
2830 | - Finish fixing a bug where bogus data would sometimes get logged to | |
2831 | the dhclient.leases file because it was opened as descriptor 2. | |
2832 | ||
2833 | - Fix the Linux dhclient-script according to suggestions made by | |
2834 | several people on the dhcp-client mailing list. | |
2835 | ||
2836 | - Log successful DNS updates at LOG_INFO, not LOG_ERROR. | |
2837 | ||
2838 | - Print an error message and refuse to run if a failover peer is | |
2839 | defined but not referenced by any pools. | |
2840 | ||
2841 | - Correct a confusing error message in failover. | |
2842 | ||
eaf0b302 TL |
2843 | Changes since 3.0 Release Candidate 9 |
2844 | ||
2845 | - Fix a bug in lease allocation for Dynamic BOOTP clients. | |
2846 | ||
0db87765 TL |
2847 | Changes since 3.0 Release Candidate 8 Patchlevel 2 |
2848 | ||
2849 | - Fix a bug that prevented update-static-leases from working. | |
2850 | ||
2851 | - Document failover-state OMAPI object. | |
2852 | ||
2853 | - Fix a compilation error on SunOS 4. | |
2854 | ||
d758ad8c TL |
2855 | Changes since 3.0 Release Candidate 8 Patchlevel 1 |
2856 | ||
2857 | - Fix a parsing bug that broke dns updates (both interim and ad-hoc). | |
2858 | This was introduced in rc8pl1 as an unintended result of the memory | |
2859 | leakage fixes that were in pl1. | |
2860 | ||
2861 | - Fix a long-standing bug where the server would record that an update | |
2862 | had been done for a client with no name, even though no update had | |
2863 | been done, and then when the client's lease expired the deletion of | |
2864 | that nonexistant record would time out because the name was the null | |
2865 | string. | |
2866 | ||
2867 | - Clean up the omshell, dhcpctl and omapi man pages a bit. | |
2868 | ||
d758ad8c TL |
2869 | Changes since 3.0 Release Candidate 8 |
2870 | ||
2871 | - Fix a bug that could cause the DHCP server to spin if | |
2872 | one-lease-per-client was enabled. | |
2873 | ||
2874 | - Fix a bug that was causing core dumps on BSD/os in the presence of | |
2875 | malformed packets. | |
2876 | ||
2877 | - In partner-down state, don't restrict lease lengths to MCLT. | |
2878 | ||
2879 | - On the failover secondary, record the MCLT received from the primary | |
2880 | so that if we come up without a connection to the primary we don't | |
2881 | wind up giving out zero-length leases. | |
2882 | ||
2883 | - Fix some compilation problems on BSD/os. | |
2884 | ||
2885 | - Fix a bunch of memory leaks. | |
2886 | ||
2887 | - Fix a couple of bugs in the option printer. | |
2888 | ||
2889 | - Fix an obscure error reporting bug in the dns update code, and also | |
2890 | make the message clearer when a key algorithm isn't supported. | |
2891 | ||
2892 | - Fix a bug in the tracing code that prevented trace runs that used | |
2893 | tcp connections from being played back. | |
2894 | ||
2895 | - Add some additional debugging capability for catching memory leaks | |
2896 | on exit. | |
2897 | ||
2898 | - Make the client release the lease correctly on shutdown. | |
2899 | ||
2900 | - Add some configurability to the build system. | |
2901 | ||
2902 | - Install omshell manual page in man1, not man8. | |
2903 | ||
2904 | - Craig Gwydir sent in a patch that fixes a long-standing bug in the | |
2905 | DHCP client that could cause core dumps, but that for some reason | |
2906 | hadn't been noticed until now. | |
2907 | ||
2908 | Changes since 3.0 Release Candidate 7 | |
2909 | ||
2910 | - Fix a bug in failover where we weren't sending updates after a | |
2911 | transition from communications-interrupted to normal. | |
2912 | ||
2913 | - Handle expired/released/reset -> free transition according to the | |
2914 | protocol specification (this works - the other way not only wasn't | |
2915 | conformant, but also didn't work). | |
2916 | ||
2917 | - Add a control object in both client and server that allows either | |
2918 | daemon to be shut down cleanly. | |
2919 | ||
2920 | - When writing a lease, if we run out of disk space, shut down the | |
2921 | output file and insist on writing a new one before proceeding. | |
2922 | ||
2923 | - In the server, if the OMAPI listener port is occupied, keep trying | |
2924 | to get it, rather than simply giving up and exiting. | |
2925 | ||
2926 | - Support fetching variables from leases and also updating and adding | |
2927 | variables to leases via OMAPI. | |
2928 | ||
2929 | - If two failover peers have wildly different clocks, refuse to start | |
2930 | doing failover. | |
2931 | ||
2932 | - Fix a bug in the DNS update code that could cause core dumps when | |
2933 | running on alpha processors. | |
2934 | ||
2935 | - Fixed a bug in ddns updates for static lease entries, thanks to a | |
2936 | patch from Andrey M Linkevitch. | |
2937 | ||
2938 | - Add support for Darwin/MacOS X | |
2939 | ||
2940 | - Install omshell (including new documentation). | |
2941 | ||
2942 | - Support DNS updates in the client (this is a very obscure feature | |
2943 | that most DHCP client users probably will not be able to use). | |
2944 | ||
2945 | - Somewhat cleaner status logging in the client. | |
2946 | ||
2947 | - Make OMAPI key naming syntax compatible with the way keys are | |
2948 | actually named (key names are domain names). | |
2949 | ||
2950 | - Fix a bug in the lease file writer. | |
2951 | ||
2952 | - Install DHCP ISC headers in a different place than BIND 9 ISC | |
2953 | headers, to avoid causing trouble in BIND 9 builds. | |
2954 | ||
2955 | - Don't send updates for attributes on an object when the attributes | |
2956 | haven't changed. Support deleting attributes on remote objects. | |
2957 | ||
2958 | - Fix a number of bugs in omshell, and add the unset and refresh | |
2959 | statements. | |
2960 | ||
2961 | - Handle disconnects in OMAPI a little bit more intelligently (so that | |
2962 | the caller gets ECONNRESET instead of EINVAL). | |
2963 | ||
2964 | - Fix a bunch of bugs in the handling of clients that have existing | |
2965 | leases when the try to renew their leases while failover is | |
2966 | operating. | |
2967 | ||
eaf0b302 TL |
2968 | Changes since 3.0 Release Candidate 6 |
2969 | ||
2970 | - Fix a core dump that could happen when processing a DHCPREQUEST from | |
2971 | a client that had a host declaration that contained both a | |
2972 | fixed-address declaration and a dhcp-client-identifier option | |
2973 | declaration, if the client identifier was longer than nine bytes. | |
2974 | ||
2975 | - Fix a memory leak that could happen in certain obscure cases when | |
2976 | using omapi to manipulate leases. | |
2977 | ||
2978 | - Fix some bugs and omissions in omshell. | |
2979 | ||
eaf0b302 TL |
2980 | Changes since 3.0 Release Candidate 5 |
2981 | ||
2982 | - Fix a bug in omapi_object_dereference that prevented objects in | |
2983 | chains from having their reference counts decreased on dereference. | |
2984 | ||
2985 | - Fix a bug in omapi_object_dereference that would prevent object | |
2986 | chains from being freed upon removal of the last reference external | |
2987 | to the chain. | |
2988 | ||
2989 | - Fix a number of other memory leaks in the OMAPI protocol subsystem. | |
2990 | ||
2991 | - Add code in the OMAPI protocol handler to trace memory leakage. | |
2992 | ||
2993 | - Clean up the memory allocation/reference history printer. | |
2994 | ||
98311e4b | 2995 | - Support input of dotted quads and colon-separated hex lists as |
eaf0b302 TL |
2996 | attribute values in omshell. |
2997 | ||
98311e4b | 2998 | - Fix a typo in the Linux interface discovery code. |
eaf0b302 TL |
2999 | |
3000 | - Conditionalize a piece of trace code that wasn't conditional. | |
3001 | ||
3002 | Changes since 3.0 Release Candidate 4 | |
3003 | ||
3004 | - Fix a bug that would prevent leases from being abandoned properly on | |
3005 | DHCPDECLINE. | |
3006 | ||
3007 | - Fix failover peer OMAPI support. | |
3008 | ||
3009 | - In failover, correctly handle expiration of leases. Previously, | |
3010 | leases would never be reclaimed because they couldn't make the | |
3011 | transition from EXPIRED to FREE. | |
3012 | ||
3013 | - Fix some broken failover state transitions. | |
3014 | ||
3015 | - Documentation fixes. | |
3016 | ||
3017 | - Take out an unnecessary check in DHCP relay agent information option | |
3018 | stashing code that was preventing REBINDING clients from rebinding. | |
3019 | ||
3020 | - Prevent failover peers from allocating leases in DHCPREQUEST | |
3021 | processing if the lease belongs to the other server. | |
3022 | ||
3023 | - Record server version in lease file introductory comment. | |
3024 | ||
3025 | - Correctly report connection errors in OMAPI and failover. | |
3026 | ||
3027 | - Make authentication signature algorithm name comparisons in OMAPI | |
3028 | case-insensitive. | |
3029 | ||
3030 | - Fix compile problem on SunOS 4.x | |
3031 | ||
98311e4b | 3032 | - If a signature algorithm is not terminated with '.', terminate it so |
eaf0b302 TL |
3033 | that comparisons between fully-qualified names will work |
3034 | consistently. | |
3035 | ||
3036 | - Different SIOCGIFCONF probe code, may "fix" problem on some Linux | |
3037 | systems with the probe not working correctly. | |
3038 | ||
3039 | - Don't allow user to type omapi key on command line of omshell. | |
3040 | ||
0596b051 TL |
3041 | Changes since 3.0 Release Candidate 3 |
3042 | ||
3043 | - Do lease billing on startup in a way that I *think* will finally do | |
3044 | the billing correctly - the previous method could overbill as a | |
3045 | result of duplicate leases. | |
3046 | ||
3047 | - Document OMAPI server objects. | |
3048 | ||
892fe689 TL |
3049 | Changes since 3.0 Release Candidate 2 Patchlevel 1 |
3050 | ||
3051 | - Fix some problems in the DDNS update code. Thanks to Albert | |
3052 | Herranz for figuring out the main problem. | |
3053 | ||
3054 | - Fix some reference counting errors on host entries that were causing | |
3055 | core dumps. | |
3056 | ||
3057 | - Fix a byte-swap bug in the token ring code, thanks to Jochen | |
3058 | Friedrich. | |
3059 | ||
3060 | - Fix a bug in lease billing, thanks to Jonas Bulow. | |
3061 | ||
3062 | Changes since 3.0 Release Candidate 2 | |
3063 | ||
3064 | - Change the conditions under which a DHCPRELEASE is actually | |
3065 | committed to be consistent with lease binding states rather than | |
98311e4b | 3066 | using the lease end time. This may fix some problems with the |
892fe689 TL |
3067 | billing class code. |
3068 | ||
3069 | - Fix a bug where lease updates would fail on Digital Unix (and maybe | |
3070 | others) because malloc was called with a size of zero. | |
3071 | ||
3072 | - Fix a core dump that happens when the DHCP server can't create its | |
3073 | trace file. | |
3074 | ||
79ea3de8 | 3075 | Changes since 3.0 Release Candidate 1 Patchlevel 1 |
87784777 | 3076 | |
79ea3de8 TL |
3077 | - Fix the dhcp_failover_put_message to not attempt to allocate a |
3078 | zero-length buffer. Some versions of malloc() fail if you try to | |
3079 | allocate a zero-length buffer, and this was causing problems on, | |
3080 | e.g., Digital Unix. | |
3081 | ||
3082 | - Fix a case where the failover code was printing an error message | |
3083 | when no error had occurred. | |
3084 | ||
3085 | - Fix a problem where when a server went down and back up again, the | |
3086 | peer would not see a state transition and so would stay in the | |
3087 | non-communicating state. | |
3088 | ||
3089 | - Be smart about going into recover_wait. | |
3090 | ||
3091 | - Fix a problem in the failover implementation where peers would fail | |
3092 | to come into sync if interrupted in the RECOVER state. This could | |
3093 | have been the cause of some problems people have reported recently. | |
3094 | ||
3095 | - Fix a problem with billing classes where they would not be unbilled | |
3096 | when the client lease expired. | |
3097 | ||
3098 | - If select fails, figure out which descriptor is bad, and cut it out | |
3099 | of the I/O loop. This prevents a potentially nasty spin. I | |
3100 | haven't heard any report it in a while, but it came up consistently | |
3101 | in testing. | |
3102 | ||
3103 | - Fix a bug in the relay agent where if you specified interfaces on | |
3104 | the command line, it would fail. | |
3105 | ||
3106 | - Fix a couple of small bugs in the omapi connection object (no known | |
3107 | user impact). | |
3108 | ||
3109 | - Add the missing 3.0 Beta 1 lease conversion script. | |
3110 | ||
3111 | - Read dhcp client script hooks if they exist, rather than only if | |
3112 | they're executable. | |
3113 | ||
3114 | Changes since 3.0 Release Candidate 1 | |
87784777 TL |
3115 | |
3116 | - Fix a memory smash that happens when fixed-address leases are used. | |
3117 | ANY SITE AT WHICH FIXED-ADDRESS STATEMENTS ARE BEING USED SHOULD | |
3118 | UPGRADE IMMEDIATELY. This has been a long-standing bug - thanks to | |
3119 | Alvise Nobile for discovering it and helping me to find it! | |
3120 | ||
79ea3de8 TL |
3121 | - Fix a small bug in binary-to-ascii, thanks to H. Peter Anvin of |
3122 | Transmeta. | |
3123 | ||
87784777 TL |
3124 | - There is a known problem with the DHCP server doing failover on |
3125 | Compaq Alpha systems. This patchlevel is not a release candidate | |
3126 | because of this bug. The bug should be straightforward to fix, so | |
3127 | a new release candidate is expected shortly. | |
3128 | ||
3129 | - There is a known problem in the DDNS update code that is probably a | |
3130 | bug, and is not, as far as we know, fixed in this patchlevel. | |
3131 | ||
6d779c72 TL |
3132 | Changes since 3.0 Beta 2 Patchlevel 24 |
3133 | ||
3134 | - Went over problematic failover state transitions and made them all | |
3135 | work, so that failover should now much less fragile. | |
3136 | ||
3137 | - Add some dhcpctl and omapi documentation | |
3138 | ||
3139 | - Fix compile errors when compiling with unusual predefines. | |
3140 | ||
3141 | - Make Token Ring work on Linux 2.4 | |
3142 | ||
3143 | - Fix the Digital Unix BPF_WORDALIGN bug. | |
3144 | ||
3145 | - Fix some dhcp client documentation errors. | |
3146 | ||
3147 | - Update some parts of the README file. | |
3148 | ||
3149 | - Support GCC on SCO. | |
3150 | ||
adbef119 | 3151 | Changes since 3.0 Beta 2 Patchlevel 23 |
de57e64b TL |
3152 | |
3153 | - Fix a bug in the DNS update code where a status code was not being | |
3154 | checked. This may have been causing core dumps. | |
3155 | ||
3156 | - When parsing the lease file, if a lease declaration includes a | |
3157 | billing class statement, and the lease already has a billing class, | |
3158 | unbill the old class. | |
3159 | ||
3160 | - When processing failover transactions, where acks will be deferred, | |
3161 | process the state transition immediately. | |
3162 | ||
3163 | - Don't try to use the new SIOCGIFCONF buffer size detection code on | |
3164 | Linux 2.0, which doesn't provide this functionality. | |
3165 | ||
3166 | - Apply a patch suggested by Tuan Uong for a problem in dlpi.c. | |
3167 | ||
3168 | - Fix a problem in using the which command in the configure script. | |
3169 | ||
3170 | - Fix a parse error in the client when setting up an omapi listener. | |
3171 | ||
3172 | - Document the -n and -g flags to the client. | |
3173 | ||
3174 | - Make sure there is always a stdin and stdout on startup. This | |
3175 | prevents shell scripts from accidentally writing error messages into | |
3176 | configuration files that happen to be opened as stderr. | |
3177 | ||
3178 | - If an interface is removed, the client will now notice that it is | |
3179 | gone rather than spinning. This has only been tested on NetBSD. | |
3180 | ||
3181 | - The client will attempt to get an address even if it can't create a | |
3182 | lease file. | |
3183 | ||
3184 | - Don't overwrite tracefiles. | |
3185 | ||
3186 | - Fix some memory allocation bugs in failover. | |
2aa36519 | 3187 | |
adbef119 | 3188 | Changes since 3.0 Beta 2 Patchlevel 22 |
140158d3 TL |
3189 | |
3190 | - Apply some patches suggested by Cyrille Lefevre, who is maintaining | |
3191 | the FreeBSD ISC DHCP Distribution port. | |
3192 | ||
3193 | - Fix a core dump in DHCPRELEASE. | |
3194 | ||
adbef119 | 3195 | Changes since 3.0 Beta 2 Patchlevel 21 |
3a395e60 TL |
3196 | |
3197 | - This time for sure: fix the spin described in the changes for pl20. | |
3198 | ||
adbef119 | 3199 | Changes since 3.0 Beta 2 Patchlevel 20 |
fc74dd0c TL |
3200 | |
3201 | - Fix a problem with Linux detecting large numbers of interfaces (Ben) | |
3202 | ||
3203 | - Fix a memory smash in the quotify code, which was introduced in | |
3204 | pl19. | |
3205 | ||
3206 | - Actually fix the spin described in the changes for pl20. The | |
3207 | previous fix only partially fixed the problem - enough to get it | |
3208 | past the regression test. | |
3209 | ||
adbef119 | 3210 | Changes since 3.0 Beta 2 Patchlevel 19 |
ed5ee591 TL |
3211 | |
3212 | - Fix a bug that could cause the server to abort if compiled with | |
3213 | POINTER_DEBUG enabled. | |
3214 | ||
3215 | - Fix a bug that could cause the server to spin when responding to a | |
3216 | DHCPREQUEST. | |
3217 | ||
3218 | - Apply Joost Mulders' suggested patches for DLPI on x86. | |
3219 | ||
3220 | - Support NUL characters in quoted strings. | |
3221 | ||
3222 | - Install unformatted man pages on SunOS. | |
3223 | ||
adbef119 | 3224 | Changes since 3.0 Beta 2 Patchlevel 18 |
b3fad8ac | 3225 | |
3350f5b7 TL |
3226 | - Allow the server to be placed in partner-down state using OMAPI. |
3227 | (Damien Neil) | |
3228 | ||
3229 | - Implement omshell, which can be used to do arbitrary things to the | |
3230 | server (in theory). (Damien Neil) | |
3231 | ||
3232 | - Fix a case where if a client had two different leases the server could | |
3233 | actually dereference the second one when it hadn't been referenced, | |
3234 | leading to memory corruption and a core dump. (James Brister) | |
3235 | ||
3236 | - Fix a case where a client could request the address of another client's | |
3237 | lease, but find_lease wouldn't detect that the other client had it, and | |
3238 | would attempt to allocate it to the client, resulting in a lease conflict | |
3239 | message. | |
3240 | ||
3241 | - Fix a case where a client with more than one client identifier could be | |
3242 | given a lease where the hardware address was correct but the client | |
3243 | identifier was not, resulting in a lease conflict message. | |
3244 | ||
98311e4b | 3245 | - Fix a problem where the server could write out a colon-separated |
3350f5b7 TL |
3246 | hex list as a value for a variable, which would then not parse. |
3247 | The fix is to always write strings as quoted strings, with any | |
3248 | non-printable characters quoted as octal escape sequences. So | |
3249 | a file written the old way still won't work, but new files written | |
3250 | this way will work. | |
3251 | ||
b3fad8ac TL |
3252 | - Fix documentation for sending non-standard options. |
3253 | ||
3254 | - Use unparsable names for unknown options. WARNING: this will | |
3255 | break any configuration files that use the option-nnn convention. | |
3256 | If you want to continue to use this convention for some options, | |
3257 | please be sure to write a definition, like this: | |
3258 | ||
3259 | option option-nnn code nnn = string; | |
3260 | ||
3261 | You can use a descriptive name instead of option-nnn if you like. | |
3262 | ||
3263 | - Fix a problem where we would see a DHCPDISCOVER/DHCPOFFER/ | |
3264 | DHCPREQUEST/DHCPACK/DHCPREQUEST/DHCPNAK sequence. This was the | |
3265 | result of a deceptively silly bug in supersede_lease. | |
3266 | ||
3267 | - Fix client script exit status check, according to a fix supplied by | |
3268 | Hermann Lauer. | |
3269 | ||
3270 | - Fix an endianness bug in the tracefile support, regarding ICMP | |
3271 | messages. | |
3272 | ||
3350f5b7 TL |
3273 | - Fix a bug in the client where the medium would not work correctly if |
3274 | it contained quoted strings. | |
3275 | ||
b3fad8ac TL |
3276 | ** there was no pl17 ** |
3277 | ||
adbef119 | 3278 | Changes since 3.0 Beta 2 Patchlevel 16 |
e6d30fd6 | 3279 | |
6da9db9d TL |
3280 | - Add support for transaction tracing. This allows the state of the |
3281 | DHCP server on startup, and all the subsequent transactions, to be | |
3282 | recorded in a file which can then be played back to reproduce the | |
3283 | behaviour of the DHCP server. This can be used to quickly | |
3284 | reproduce bugs that cause core dumps or corruption, and also for | |
3285 | tracking down memory leaks. | |
3286 | ||
3287 | - Incorporate some bug fixes provided by Joost Mulders for the DLPI | |
3288 | package which should clear up problems people have been seeing on | |
3289 | Solaris. | |
3290 | ||
3291 | - Fix bugs in the handling of options stored as linked lists (agent | |
3292 | options, fqdn options and nwip options) that could cause memory | |
3293 | corruption and core dumps. | |
3294 | ||
3295 | - Fix a bug in DHCPREQUEST handling that resulted in DHCPNAK messages | |
3296 | not being send in some cases when they were needed. | |
3297 | ||
3298 | - Make the lease structure somewhat more compact. | |
3299 | ||
3300 | - Make initial failover startup *much* faster. This was researched | |
3301 | and implemented by Damien Neil. | |
3302 | ||
3303 | - Add a --version flag to all executables, which prints the program | |
3304 | name and version to standard output. | |
3305 | ||
3306 | - Don't rewrite the lease file every thousand leases. | |
3307 | ||
e6d30fd6 TL |
3308 | - A bug in nit.c for older SunOS machines was fixed by a patch sent in |
3309 | by Takeshi Hagiwara. | |
3310 | ||
6da9db9d TL |
3311 | - Fix a memory corruption bug in the DHCP client. |
3312 | ||
3313 | - Lots of documentation updates. | |
3314 | ||
3315 | - Add a feature allowing environment variables to be passed to the | |
3316 | DHCP client script on the DHCP client command line. | |
3317 | ||
3318 | - Fix client medium support, which had been broken for some time. | |
3319 | ||
3320 | - Fix a bug in the DHCP client initial startup backoff interval, which | |
3321 | would cause two DHCPDISCOVERS to be sent back-to-back on startup. | |
3322 | ||
adbef119 | 3323 | Changes since 3.0 Beta 2 Patchlevel 15 |
af49fdff TL |
3324 | |
3325 | - Some documentation tweaks. | |
3326 | ||
3327 | - Maybe fix a problem in the DLPI code. | |
3328 | ||
3329 | - Fix some error code space inconsistencies in ddns update code. | |
3330 | ||
3331 | - Support relay agents that intercept unicast DHCP messages to stuff | |
3332 | agent options into them. | |
3333 | ||
3334 | - Fix a small memory leak in the relay agent option support code. | |
3335 | ||
c5b569f8 TL |
3336 | - Fix a core dump that would occur if a packet was sent with no |
3337 | options. | |
3338 | ||
adbef119 | 3339 | Changes since 3.0 Beta 2 Patchlevel 14 |
754ae3e9 TL |
3340 | |
3341 | - Finish fixing a long-standing bug in the agent options code. This | |
3342 | was causing core dumps and failing to operate correctly - in | |
3343 | particular, agent option stashing wasn't working. Agent option | |
3344 | stashing should now be working, meaning that agent options can be | |
3345 | used in class statements to control address allocation. | |
3346 | ||
3347 | - Fix up documentation. | |
3348 | ||
3349 | - Fix a couple of small memory leaks that would have added up | |
3350 | significantly in a high-demand situation. | |
3351 | ||
3352 | - Add a log-facility configuration parameter. | |
3353 | ||
3354 | - Fix a compile error on some older operating systems. | |
3355 | ||
3356 | - Add the ability in the client to execute certain statements before | |
3357 | transmitting packets to the server. Handy for debugging; not much | |
3358 | practical use otherwise. | |
3359 | ||
3360 | - Don't send faked-out giaddr when renewing or bound - again, useful | |
3361 | for debugging. | |
3362 | ||
adbef119 | 3363 | Changes since 3.0 Beta 2 Patchlevel 13 |
2f2e7960 TL |
3364 | |
3365 | - Fixed a problem where the fqdn decoder would sometimes try to store | |
3366 | an option with an (unsigned) negative length, resulting in a core | |
3367 | dump on some systems. | |
3368 | ||
3369 | - Work around the Win98 DHCP client, which NUL-terminates the FQDN | |
3370 | option. | |
3371 | ||
3372 | - Work around Win98 and Win2k clients that will claim they want to do | |
3373 | the update even when they don't have any way to do it. | |
3374 | ||
3375 | - Fix some log messages that can be printed when failover is operating | |
3376 | that were not printing enough information. | |
3377 | ||
3378 | - It was possible for a DHCPDISCOVER to get an allocation even when | |
3379 | the state machine said the server shouldn't be responding. | |
3380 | ||
3381 | - Don't load balance DHCPREQUESTs from clients in RENEWING and | |
3382 | REBINDING, since in RENEWING, if we heard it, it's for us, and in | |
3383 | REBINDING, the client wouldn't have got to REBINDING if its primary | |
3384 | were answering. | |
3385 | ||
3386 | - When we get a bogus state lease binding state transition, don't do | |
3387 | the transition. | |
3388 | ||
3389 | ||
adbef119 | 3390 | Changes since 3.0 Beta 2 Patchlevel 12 |
66e98927 TL |
3391 | |
3392 | - Fixed a couple of silly compile errors. | |
3393 | ||
a1e2e3d6 TL |
3394 | Changes since 3.0 Beta 2 Patchlevel 11 |
3395 | ||
3396 | - Albert Herranz tracked down and fixed a subtle bug in the base64 | |
3397 | decoder that would prevent any key with an 'x' in its base64 | |
3398 | representation from working correctly. | |
3399 | ||
3400 | - Thanks to Chris Cheney and Michael Sanders, we have a fix for the | |
3401 | hang that they both spotted in the DHCP server - when | |
3402 | one-lease-per-client was set, the code to release the "other" lease | |
3403 | could spin. | |
3404 | ||
3405 | - Fix a problem with alignment of the input buffer in bpf in cases | |
3406 | where two packets arrive in the same bpf read. | |
3407 | ||
3408 | - Fix a problem where the relay agent would crash if you specified an | |
3409 | interface name on the command line. | |
3410 | ||
3411 | - Add the ability to conditionalize client behaviour based on the | |
3412 | client state. | |
3413 | ||
3414 | - Add support for the FQDN option, and added support for a new way of | |
3415 | doing ddns updates (ddns update style interim) that allows more than | |
3416 | one DHCP server to update the DNS for the same network(s). This | |
3417 | was implemented by Damien Neil with some additional functionality | |
3418 | added by Ted Lemon. | |
3419 | ||
3420 | - Damien added a "log" statement, so that the configuration file can | |
3421 | be made to log debugging information and other information. | |
3422 | ||
3423 | - Fixed a bug that caused option buffers not to be terminated with an | |
3424 | end option. | |
3425 | ||
3426 | - Fixed a long-standing bug in the support for option spaces where the | |
3427 | options are stored as an ordered list rather than in a hash table, | |
3428 | which could theoretically result in memory pool corruption. | |
3429 | ||
3430 | - Prevent hardware declarations with no actual hardware address from | |
3431 | being written as something unparsable, and behave correctly in the | |
3432 | face of a null hardware address on input. | |
3433 | ||
3434 | - Allow key names to be FQDNs, and qualify the algorithm name if it is | |
3435 | specified unqualified. | |
3436 | ||
3437 | - Modify the DDNS update code so that it never prints the "resolver | |
3438 | failed" message, but instead says *why* the resolver failed. | |
3439 | ||
3440 | - Officially support the subnet selection option, which now has an | |
3441 | RFC. | |
3442 | ||
3443 | - Fix a build bug on MacOS X. | |
3444 | ||
3445 | - Allow administrator to disable ping checking. | |
3446 | ||
3447 | - Clean up dhcpd.conf documentation and add more information about how | |
3448 | it works. | |
3449 | ||
6c68ec36 TL |
3450 | Changes since 3.0 Beta 2 Patchlevel 10 |
3451 | ||
3452 | - Fix a bug introduced during debugging (!) and accidentally committed | |
3453 | to CVS. | |
3454 | ||
9fd337e7 TL |
3455 | Changes since 3.0 Beta 2 Patchlevel 9 |
3456 | ||
3457 | - Fix DHCP client handling of vendor encapsulated options. | |
3458 | ||
3459 | - Fix a bug in the handling of relay agent information options introduced | |
3460 | in patchlevel 9. | |
3461 | ||
3462 | - Stash agent options on client leases by default, and use the stashed | |
3463 | options at renewal time. | |
3464 | ||
3465 | - Add the ability to test the client's binding state in the client | |
3466 | configuration language. | |
3467 | ||
3468 | - Fix a core dump in the DNS update code. | |
3469 | ||
3470 | - Fix some expression evaluation bugs that were causing updates to be | |
3471 | done when no client hostname was received. | |
3472 | ||
3473 | - Fix expression evaluation debugging printfs. | |
3474 | ||
3475 | - Teach pretty_print_option to print options in option spaces other than | |
3476 | the DHCP option space. | |
3477 | ||
3478 | - Add a warning message if the RHS of a not is not boolean. | |
3479 | ||
3480 | - Never select for more than a day, because some implementations of | |
3481 | select will just fail if the timeout is too long (!). | |
3482 | ||
3483 | - Fix a case where a DHCPDISCOVER from an unknown network would be | |
3484 | silently dropped. | |
3485 | ||
3486 | - Fix a bug where if a client requested an IP address for which a different | |
3487 | client had the lease, the DHCP server would reallocate it anyway. | |
3488 | ||
3489 | - Fix the DNS update code so that if the client changes its name, the DNS | |
3490 | will be correctly updated. | |
3491 | ||
3922772a TL |
3492 | Changes since 3.0 Beta 2 Patchlevel 8 |
3493 | ||
3494 | - Oops, there was another subtle math error in the header-length | |
3495 | bounds-checking. | |
3496 | ||
3497 | Changes since 3.0 Beta 2 Patchlevel 7 | |
848c2547 TL |
3498 | |
3499 | - Oops, forgot to byte-swap udp header length before bounds-checking it. | |
3500 | ||
3922772a | 3501 | Changes since 3.0 Beta 2 Patchlevel 6 |
0f6045f8 | 3502 | |
f8572308 TL |
3503 | - Fix a possible DoS attack where a client could cause the checksummer |
3504 | to dump core. This was a read, not a write, so it shouldn't be | |
3505 | possible to exploit it any further than that. | |
3506 | ||
3507 | - Implement client- and server-side support for using the Client FQDN | |
3508 | option. | |
3509 | ||
3510 | - Support for other option spaces in the client has been added. This | |
3511 | means that it is now possible to define a vendor option space on the | |
3512 | client, request options in that space from the server (which must | |
3513 | define the same option space), and then use those options in the | |
3514 | client. This also allows NWIP and Client FQDN options to be used | |
3515 | meaningfully. | |
3516 | ||
3517 | - Add object initializer support. This means that objects can now be | |
3518 | initialized to something other than all-zeros when allocated, which | |
3519 | makes, e.g., the interface object support code a little more robust. | |
3520 | ||
3521 | - Fix an off-by-one bug in the host stuffer. This was causing host | |
3522 | deletes not the work, and may also have been causing OMAPI | |
3523 | connections to get dropped. Thanks to James Brister for tracking | |
3524 | this one down! | |
3525 | ||
3526 | - Fixed a core dump in the interface discovery code that is triggered | |
3527 | when there is no subnet declaration for an interface, but the server | |
3528 | decides to continue running. Thanks to Shane Kerr for tracking | |
3529 | down and fixing this problem. | |
3530 | ||
3531 | Changes since 3.0 Beta 2 Patchlevel 5 | |
3532 | ||
0f6045f8 TL |
3533 | - Fix a bug in the recent enhancement to the interface discovery code |
3534 | to support arbitrary-length interface lists. | |
3535 | ||
3536 | - Support NUL-terminated DHCP options when initializing client-script | |
3537 | environment. | |
3538 | ||
3539 | - Fix suffix operator. | |
3540 | ||
3541 | - Fix NetWare/IP option parsing. | |
3542 | ||
3543 | - Better error/status checking in dhcpctl initialization and omapi | |
3544 | connection code. | |
3545 | ||
3546 | - Fix a potential memory smash in dhcpctl code. | |
3547 | ||
3548 | - Fix SunOS4 and (maybe) Ultrix builds. | |
3549 | ||
3550 | - Fix a bug where a certain sort of incoming packet could cause a core | |
3551 | dump on Solaris (and probably elsewhere). | |
3552 | ||
3553 | - Add some more safety checks in error logging code. | |
3554 | ||
3555 | - Add support for ISC_R_INCOMPLETE in OMAPI protocol connection code. | |
3556 | ||
3557 | - Fix relay agent so that if an interface is specified on the command | |
3558 | line, the relay agent does not dump core. | |
3559 | ||
3560 | - Fix class matching so that match if can be combined with match or | |
3561 | spawn with. | |
3562 | ||
3563 | - Do not allow spurious leases in the lease database to introduce | |
3564 | potentially bogus leases into the in-memory database. | |
3565 | ||
3566 | - Fix a byte-order problem in the client hardware address type code | |
3567 | for OMAPI. | |
3568 | ||
3569 | - Be slightly less picky about what sort of hardware addresses OMAPI | |
3570 | can install in host declarations. | |
3571 | ||
801de092 TL |
3572 | Changes since 3.0 Beta 2 Patchlevel 4 |
3573 | ||
3574 | - Incorporated Peter Marschall's proposed change to array/record | |
3575 | parsing, which allows things like the slp-agent option to be encoded | |
3576 | correctly. Thanks very much to Peter for taking the initiative to | |
3577 | do this, and for doing such a careful job of it (e.g., updating the | |
3578 | comments)! | |
3579 | ||
3580 | - Added an encoding for the slp-agent option. :') | |
3581 | ||
6ed7a93d TL |
3582 | - Fixed SunOS 4 build. Thanks to Robert Elz for responding to my |
3583 | request for help on this with patches! | |
3584 | ||
3585 | - Incorporated a change that should fix a problem reported by Philippe | |
3586 | Jumelle where when the network connection between two servers is | |
3587 | lost, they never reconnect. | |
3588 | ||
3589 | - Fix client script files other than that for NetBSD to actually use | |
3590 | make_resolv_conf as documented in the manual page. | |
3591 | ||
3592 | - Fix a bug in the packet handling code that could result in a core | |
3593 | dump. | |
3594 | ||
3595 | - Fix a bug in the bootp code where responses on the local net would | |
3596 | be sent to the wrong MAC address. Thanks to Jerry Schave for | |
3597 | catching this one. | |
3598 | ||
490eb5e7 TL |
3599 | Changes since 3.0 Beta 2 Patchlevel 3 |
3600 | ||
3601 | - In the DHCP client, execute client statements prior to using the values | |
45d545f0 | 3602 | of options, so that the client configuration can overridden, e.g., the |
490eb5e7 TL |
3603 | lease renewal time. |
3604 | ||
3605 | - Fix a reference counting error that would result in very reproducible | |
3606 | failures in updates, as well as occasional core dumps, if a zone was | |
3607 | declared without a key. | |
3608 | ||
3609 | - Fix some Linux 2.0 compilation problems. | |
3610 | ||
3611 | - Fix a bug in scope evaluation during execution of "on" statements that | |
3612 | caused values not to be recorded on leases. | |
3613 | ||
3614 | - If the dhcp-max-message-size option is specified in scope, and the | |
3615 | client didn't send this option, use the one specified in scope to | |
3616 | determine the maximum size of the response. | |
3617 | ||
592d8153 TL |
3618 | Changes since 3.0 Beta 2 Patchlevel 2 |
3619 | ||
359b023e TL |
3620 | - Fix a case where spawning subclasses were being allocated |
3621 | incorrectly, resulting in a core dump. | |
3622 | ||
592d8153 TL |
3623 | - Fix a case where the DHCP server might inappropriately NAK a |
3624 | RENEWING client. | |
3625 | ||
3626 | - Fix a place dhcprequest() where static leases could leak. | |
3627 | ||
3628 | - Include memory.h in omapip_p.h so that we don't get warnings about | |
3629 | using memcmp(). | |
3630 | ||
2aa36519 TL |
3631 | Changes since 3.0 Beta 2 Patchlevel 1 |
3632 | ||
3633 | - Notice when SIOCFIGCONF returns more data than fit in the buffer - | |
3634 | allocate a larger buffer, and retry. Thanks to Greg Fausak for | |
3635 | pointing this out. | |
3636 | ||
3637 | - In the server, if no interfaces were configured, report an error and | |
3638 | exit. | |
3639 | ||
3640 | - Don't ever record a state of 'startup'. | |
3641 | ||
3642 | - Don't try to evaluate the local failover binding address if none was | |
3643 | specified. Thanks to Joseph Breu for finding this. |