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[dragonfly.git] / contrib / dhcp-3.0 / RELNOTES
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1 Internet Systems Consortium DHCP Distribution
2 Version 3.0.2rc3
3 December 3, 2004
4
5 Release Notes
6
7 NEW FEATURES
8
9Version 3 of the ISC DHCP Distribution includes the following features
10that are new since version 2.0:
11
12 - DHCP Failover Protocol support
13 - OMAPI, an API for accessing and modifying the DHCP server and
14 client state.
15 - Conditional behaviour
16 - Storing arbitrary information on leases
17 - Address pools with access control
18 - Client classing
19 - Address allocation restriction by class
20 - Relay agent information option support
21 - Dynamic DNS updates
22 - Many bug fixes, performance enhancements, and minor new DHCP
23 protocol features.
24
25The main bug fixed here is a bug in the subclass allocation code that
26could result in a memory smash. Any users of the ISC DHCP server who
27are using subclasses should seriously consider upgrading to 3.0.1.
28
29If you are running 3.0 beta 1 and are doing dynamic DNS updates, the
30lease file is no longer forward-compatible to 3.0 final. A script
31has been provided to convert 3.0b1 lease files. This is in
32contrib/3.0b1-lease-convert.
33
34For information on how to install, configure and run this software,
35as well as how to find documentation and report bugs, please consult
36the README file.
37
38The Dynamic DNS Update support is a descendent of an implementation
39done by Lans Carstensen and Brian Dols at Rose-Hulman Institute of
40Technology, Jim Watt at Applied Biosystems, Irina Goble at Integrated
41Measurement Systems, Igor Sharfmesser at Kazakh Telecom, and Brian
42Murrell at BC Tel Advanced Communications. I'd like to express my
43thanks to all of these good people here, both for working on the code
44and for prodding me into improving it.
45
46 Changes since 3.0.2rc2
47
48- Two varaibles introduced in 3.0.2b1 were used without being initialized
49 in the case where neither the FILE nor SNAME fields were available for
50 overloading. This was repaired.
51
52- A heretofore believed to be impossible corner case of the option
53 overloading implementation turned out to be possible ("Unable to sort
54 overloaded options after 10 tries."). The implementation was reworked
55 to consider the case of an option so large it would require more than
56 three chunks to fit.
57
58- Many other instances of variables being used without being initialized
59 were repaired.
60
61- An uninitialized variable in omapi_io_destroy() led to the discovery
62 that this function may result in orphaned pointers (and hence, a memory
63 leak).
64
65 Changes since 3.0.2rc1
66
67- allocate_lease() was rewritten to repair a bug in which the server would
68 try to allocate an ABANDONED lease when FREE leases were available.
69
70 Changes since 3.0.2b1
71
72- Some dhcp-eval.5 manpage formatting was repaired.
73
74 Changes since 3.0.1
75
76- A bug was fixed in the server's 'option overloading' implementation,
77 where options loaded into the 'file' and 'sname' packet fields were
78 not aligned precisely as rfc2131 dictates.
79
80- The FreeBSD client script was changed to support the case where a domain
81 name was not provided by the server.
82
83- A memory leak in 'omshell' per each command line parsed was
84 repaired, thanks to a patch from Jarkko Torppa.
85
86- Log functions writing to stderr were adjusted to use the STDERR_FILENO
87 system definition rather than '2'. This is a no-op for 90% of platforms.
88
89- One call to trace_write_packet_iov() counted the number of io vectors
90 incorrectly, causing inconsistent tracefiles. This was fixed.
91
92- Some expression parse failure memory leaks were closed.
93
94- A host byte order problem in tracefiles was repaired.
95
96- Pools configured in DHCPD for failover possessing permission lists that
97 previously were assumed to not include dyanmic bootp clients are now
98 a little more pessimistic. The result is, dhcpd will nag you about just
99 about most pools that possess a 'allow' statement with no 'deny' that
100 would definitely match a dynamic bootp client.
101
102- The 'ddns-update-style' configuration warning bit now insists that
103 the configuration be globally scoped.
104
105- Two memory leaks in dhclient were closed thanks to a patch from Felix
106 Farkas.
107
108- Some minor but excellently pedantic documentation errors were fixed
109 thanks to a patch from Thomas Klausner.
110
111- Bugs in operator precedence in executable statements have been repaired
112 once again. More legal syntaxes should be parsed legally.
113
114- Failing to initialize a tracefile for any reason if a tracefile was
115 specified is now a fatal error. Thanks to a patch from Albert Herranz.
116
117- Corrected a bug in which the number of leases transferred as calculated
118 by the failover primary and sent to peers in POOLRESP responses may be
119 incorrect. This value is not believed to be used by other failover
120 implementations, excepting perhaps as logged information.
121
122- Corrected a bug in which 'dhcp_failover_send_poolresp()' was in fact
123 sending POOLREQ messages instead of POOLRESP mesasges. This message
124 was essentially ignored since failover secondaries effectively do not
125 respond to POOLREQ messages.
126
127- Type definitions for various bitwidths of integers in the sunos5-5
128 build of ISC DHCP have been fixed. It should compile and run more
129 easily when built in 64-bit for this platform.
130
131- "allow known-clients;" is now a legal syntax, to avoid confusion.
132
133- If one dhcp server chooses to 'load balance' a request to its failover
134 peer, it first checks to see if it believes said peer has a free
135 lease to allocate before ignoring the DISCOVER.
136
137- log() was logging a work buffer, rather than the value returned by
138 executing the statements configured by the user. In some cases,
139 the work buffer and the intended results were the same. In some other
140 cases, they were not. This was fixed thanks to a patch from Gunnar
141 Fjone and directconnect.no.
142
143- Compiler warnings for some string type conversions was fixed, thanks
144 to Andreas Gustafsson.
145
146- The netbsd build environments were simplified to one, in which
147 -Wconversion is not used, thanks to Andreas Gustafsson.
148
149- How randomness in the backoff-cutoff dhclient configuration variable
150 is implemented was better documented in the manpage, and the behaviour
151 of dhclient in REQUEST timeout handling was changed to match that of
152 DISCOVER timeout handling.
153
154- Omapi was hardened against clients that pass in null values, thanks
155 to a patch from Mark Jason Dominus.
156
157- A bug was fixed in dhclient that kept it from doing client-side
158 ddns updates. Thanks to a patch from Andreas Gustafsson, which
159 underwent some modification after review by Jason Vas Dias.
160
161- Failover implementations disconnected due to the network between
162 them (rather than one of the two shutting down) will now try to
163 re-establish the failover connection every 5 seconds, rather than
164 to simply try once and give up until one of them is restarted.
165 Thanks to a patch from Ulf Ekberg from Infoblox, and field testing
166 by Greger V. Teigre which led to an enhancement to it.
167
168- A problem that kept DHCP Failover secondaries from tearing down
169 ddns records was repaired. Thanks to a patch from Ulf Ekberg from
170 Infoblox.
171
172- 64bit pointer sizes are detected properly on FreeBSD now.
173
174- A bug was repaired where the DHCP server would leave stale references
175 to host records on leases it once thought about offering to certain
176 clients. The result would be to apply host and 'known' scopes to the
177 wrong clients (possibly denying booting). NOTE: The 'mis-host' patch
178 that was being circulated as a workaround is not the way this bug was
179 fixed. If you were a victim of this bug in 3.0.1, you are cautioned
180 to proceed carefully and see if it fixes your problem.
181
182- A bug was repaired in the server's DHCPINFORM handling, where it
183 tried to divine the client's address from the source packet and
184 would get it wrong. Thanks to Anshuman Singh Rawat.
185
186- A log message was introduced to help illuminate the case where the
187 server was unable to find a lease to assign to any BOOTP client.
188 Thanks to Daniel Baker.
189
190- A minor dhcpd.conf.5 manpage error was fixed.
191
192 Changes since 3.0.1rc14
193
194- The global variable 'cur_time' was centralized and is now uniformly of a
195 type #defined in system-dependent headers. It had previously been defined
196 in one of many places as a 32-bit value, and this causes mayhem on 64-bit
197 big endian systems. It probably wasn't too healthy on little endian
198 systems either.
199
200- A printf format string error introduced in rc14 was repaired.
201
202- AIX system-dependent header file was altered to only define NO_SNPRINTF
203 if the condition used to #ifdef in vsnprintf in AIX' header files
204 is false.
205
206- The Alpha/OSF system-dependent header file was altered to define
207 NO_SNPRINTF on OS revisions older than 4.0G.
208
209- omapip/test.c had string.h added to its includes.
210
211 Changes since 3.0.1rc13
212
213! CAN-2004-0460 - CERT VU#317350: Five stack overflow exploits were closed
214 in logging messages with excessively long hostnames provided by the
215 clients. It is highly probable that these could have been used by
216 attackers to gain arbitrary root access on systems using ISC DHCP 3.0.1
217 release candidates 12 or 13. Special thanks to Gregory Duchemin for
218 both finding and solving the problem.
219
220! CAN-2004-0461 - CERT VU#654390: Once the above was closed, an opening
221 in log_*() functions was evidented, on some specific platforms where
222 vsnprintf() was not believed to be available and calls were wrapped to
223 sprintf() instead. Again, credit goes to Gregory Duchemin for finding
224 the problem. Calls to snprintf() are now linked to a distribution-local
225 snprintf implementation, only in those cases where the architecture is
226 not known to provide one (see includes/cf/[arch].h). If you experience
227 linking problems with snprintf/vsnprintf or 'isc_print_' functions, this
228 is where to look. This vulnerability did not exist in any previously
229 published version of ISC DHCP.
230
231- Compilation on hpux 11.11 was repaired.
232
233- 'The cross-compile bug fix' was backed out.
234
235 Changes since 3.0.1rc12
236
237- Fixed a bug in omapi lease lookup function, to form the hardware
238 address for the hash lookup correctly, thanks to a patch from
239 Richard Hirst.
240
241- Fixed a bug where dhcrelay was sending relayed responses back to the
242 broadcast address, but with the source's unicast mac address. Should
243 now conform to rfc2131 section 4.1.
244
245- Cross-compile bug fix; use $(AR) instead of ar. Thanks to Morten Brorup.
246
247- Fixed a crash bug in dhclient where dhcpd servers that do not provide
248 renewal times results in an FPE. As a side effect, dhclient can now
249 properly handle 0xFFFFFFFF (-1) expiry times supplied by servers. Thanks
250 to a patch from Burt Silverman.
251
252- The 'ping timeout' debugs from rc12 were removed to -DDEBUG only,
253 and reformatted to correct a compilation error on solaris platforms.
254
255- A patch was applied which fixes a case where leases read from the
256 leases database do not properly over-ride previously read leases.
257
258- dhcpctl.3 manpage was tweaked.
259
260 Changes since 3.0.1rc11
261
262- A patch from Steve Campbell was applied with minor modifications to
263 permit reverse dns PTR record updates with values containing spaces.
264
265- A patch from Florian Lohoff was applied with some modifications to
266 dhcrelay. It now discards packets whose hop count exceeds 10 by default,
267 and a command-line option (-c) can be used to set this threshold.
268
269- A failover bug relating to identifying peers by name length instead of
270 by name was fixed.
271
272- Delcaring failover configs within shared-network statements should no
273 longer result in error.
274
275- The -nw command line option to dhclient now works.
276
277- Thanks to a patch from Michael Richardson:
278 - Some problems with long option processing have been fixed.
279 - Some fixes to minires so that updates of KEY records will work.
280
281- contrib/ms2isc was updated by Shu-Min Chang of the Intel Corporation.
282 see contrib/ms2isc/readme.txt for revision notes.
283
284- Dhclient no longer uses shell commands to kill another instance of
285 itself, it sends the signal directly. Thanks to a patch from Martin
286 Blapp.
287
288- The FreeBSD dhclient-script was changed so that a failure to write to
289 /etc/resolv.conf does not prematurely end the script. This keeps dhclient
290 from looping infinitely when this is the case. Thanks to a patch from
291 Martin Blapp.
292
293- A patch from Bill Stephens was applied which resolves a problem with lease
294 expiry times in failover configurations.
295
296- A memory leak in configuration parsing was closed thanks to a patch from
297 Steve G.
298
299- The function which discovers interfaces will now skip non-broadcast or
300 point-to-point interfaces, thanks to a patch from David Brownlee.
301
302- Options not yet known by the dhcpd or dhclient have had their names
303 changed such that they do not contain # symbols, in case they should ever
304 appear in a lease file. An option that might have been named "#144" is
305 now "unknown-144".
306
307- Another patch from Bill Stephens which allows the ping-check timeout to
308 be configured as 'ping-timeout'. Defaults to 1.
309
310 Changes since 3.0.1rc10
311
312- Potential buffer overflows in minires repaired.
313
314- A change to the linux client script to use /bin/bash, since /bin/sh may
315 not be bash.
316
317- Some missing va_end cleanups thanks to a patch from Thomas Klausner.
318
319- A correction of boolean parsing syntax validation - some illegal syntaxes
320 that worked before are now detected and produce errs, some legal syntaxes
321 that errored before will now work properly.
322
323- Some search-and-replace errors that caused some options to change their
324 names was repaired.
325
326- Shu-min Chang of the Intel corporation has contributed a perl script and
327 module that converts the MS NT4 DHCP configuration to a ISC DHCP3
328 configuration file.
329
330- Applied the remainder of the dhcpctl memory leak patch provided by Bill
331 Squier at ReefEdge, Inc. (groo@reefedge.com).
332
333- Missing non-optional failover peer configurations will now result in a soft
334 error rather than a null dereference.
335
336 Changes since 3.0.1rc9
337
338- A format string was corrected to fix compiler warnings.
339
340- A number of spelling corrections were made in the man pages.
341
342- The dhclient.conf.5 man page was changed to refer to do-forward-updates
343 rather than a configuration option that doesn't exist.
344
345- A FreeBSD-specific bug in the interface removal handling was fixed.
346
347- A Linux-specific Token Ring detection problem was fixed.
348
349- Hashes removed from as-yet-unknown agent options, having those options
350 appear in reality before we know about them will no longer produce
351 self-corrupting lease databases.
352
353- dhclient will use the proper port numbers now when using the -g option.
354
355- A order-of-operations bug with 2 match clauses in 1 class statement is
356 fixed thanks to a patch from Andrew Matheson.
357
358- Compilation problems on Solaris were fixed.
359
360- Compilation problems when built with DEBUG or DEBUG_PACKET were repaired.
361
362- A fix to the dhcp ack process which makes certain group options will be
363 included in the first DHCPOFFER message was made thanks to a patch from
364 Ling Gou.
365
366- A few memory leaks were repaired thanks to patches from Bill Squier at
367 ReefEdge, Inc. (groo@reefedge.com).
368
369- A fix for shared-networks that sometimes give clients options for the
370 wrong subnets (in particular, 'option routers') was applied, thanks to
371 Ted Lemon for the patch.
372
373- Omshell's handling of dotted octets as values was changed such that dots
374 one after the other produce zero values in the integer string.
375
376 Changes since 3.0.1rc8
377
378- Fix a format string vulnerability in the server that could lead to a
379 remote root compromise (discovered by NGSEC Research Team, www.ngsec.com).
380
381- Add additional support for NetBSD/sparc64.
382
383- Fix a bug in the command-line parsing of the client. Also, resolve
384 a memory leak.
385
386- Add better support for shells other than bash in the Linux client
387 script.
388
389- Various build fixes for modern versions of FreeBSD and Linux.
390
391- Fix a bad bounds check when printing binding state names.
392
393- Clarify documentation about fixed-address and multiple addresses.
394
395- Fix a typo in the authoritative error message.
396
397- Make a log entry when we can't write a billing class.
398
399- Use conversion targets that are the right size on all architectures.
400
401- Increment the hop count when relaying.
402
403- Log a message when lease state is changed through OMAPI.
404
405- Don't rerun the shared_network when evaluating the pool.
406
407- Fix a reversed test in the parser.
408
409- Change the type of rbuf_max.
410
411- Make FTS_LAST a manifest constant to quiet warnings.
412
413 Changes since 3.0.1rc7
414
415- Fix two compiler warnings that are generated when compiling on Solaris
416 with gcc. These stop the build, even though they weren't actually
417 errors, because we prefer that our builds generate no warnings.
418
419 Changes since 3.0.1rc6
420
421- Don't allow a lease that's in the EXPIRED, RELEASED or RESET state
422 to be renewed.
423
424- Implement lease stealing for cases where the primary has fewer leases
425 than the secondary, as called for by the standard.
426
427- Add a fudge factor to the lease expiry acceptance code, (suggested
428 by Kevin Miller of CMU).
429
430- Fix a bug in permit_list_match that made it much too willing to say
431 that two permit lists matched.
432
433- Unless DEBUG_DNS_UPDATES is defined, print more user-friendly (and
434 also more compact) messages about DNS updates.
435
436- Fix a bug in generating wire-format domain names for the FQDN option.
437
438- Fix a bug where the FQDN option would not be returned if the client
439 requested it, contrary to the standard.
440
441- On Darwin, use the FreeBSD DHCP client script.
442
443- On NetBSD/sparc, don't check for casting warnings.
444
445- Add a flag in the DHCP client to disable updating the client's A
446 record when sending an FQDN option indicating that the client is
447 going to update its A record.
448
449- In the client, don't attempt a DNS update until one second after
450 configuring the new IP address, and if the update times out, keep
451 trying until a response, positive or negative, is received from the
452 DNS server.
453
454- Fix an uninitialized memory bug in the DHCP client.
455
456- Apply some FreeBSD-specific bug fixes suggested by Murray Stokely.
457
458- Fix a bug in ns_parserr(), where it was returning the wrong sort
459 of result code in some cases (suggested by Ben Harris of the
460 NetBSD project).
461
462- Fix a bug in is_identifier(), where it was checking against EOF
463 instead of the END_OF_FILE token (also suggested by Ben Harris).
464
465- Fix a bug where if an option universe contained no options, the
466 DHCP server could dump core (Walter Steiner).
467
468- Fix a bug in the handling of encapsulated options.
469
470- Fix a bug that prevented NWIP suboptions from being processed.
471
472- Delete the FTS_BOOTP and FTS_RESERVED states and implement them
473 as modifier flags to the FTS_ACTIVE state, as called for in the
474 failover protocol standard.
475
476- Fix bugs in the pool merging code that resulted in references and
477 dereferences of null pointers. This bug had no impact unless the
478 POINTER_DEBUG flag was defined.
479
480- In the server, added a do-forward-updates flag that can be used to
481 disable forward updates in all cases, so that sites that want the
482 clients to take sole responsibility for updating their A record can
483 do so.
484
485- Make it possible to disable optimization of PTR record updates.
486
487 Changes since 3.0.1rc5
488
489- Include some new documentation and changes provided by Karl Auer.
490
491- Add a workaround for some Lexmark printers that send a double-NUL-
492 terminated host-name option, which would break DNS updates.
493
494- Fix an off-by-one error in the MAC-address checking code for
495 DHCPRELEASE that was added in 3.0.1rc5.
496
497- Fix a bug where client-specific information was not being discarded
498 from the lease when it expired or was released, resulting in
499 problems if the lease was reallocated to a different client.
500
501- If more than one allocation pool is specified that has the same set
502 of constraints as another allocation pool on the same shared
503 network, merge the two pools.
504
505- Don't print an error in fallback_discard, since this just causes
506 confusion and does not appear to be helping to encourage anyone to
507 fix this bug.
508
509 Changes since 3.0.1rc4
510
511- Fix a bug that would cause the DHCP server to spin if asked to parse
512 a certain kind of incorrect statement.
513
514- Fix a related bug that would prevent an error from being reported in
515 the same case.
516
517- Additional documentation.
518
519- Make sure that the hardware address matches the lease when
520 processing a DHCPRELEASE message.
521
522 Changes since 3.0.1rc3
523
524- A minor bug fix in the arguments to a logging function call.
525- Documentation update for dhcpd.conf.
526
527 Changes since 3.0.1rc2
528
529- Allow the primary to send a POOLREQ message. This isn't what the current
530 failover draft says to do, so we may have to back it out if I can't get the
531 authors to relent, but the scheme for balancing that's specified in the
532 current draft seems needlessly hairy, so I'm floating a trial balloon.
533 The rc1 code did not implement the method described in the draft either.
534
535 Changes since 3.0.1rc1
536
537- Treat NXDOMAIN and NXRRSET as success when we are trying to delete a
538 domain or RRSET. This allows the DHCP server to forget about a name
539 it added to the DNS once it's been removed, even if the DHCP server
540 wasn't the one that removed it.
541
542- Install defaults for failover maximum outstanding updates and maximum
543 silent time. This prevents problems that might occur if these values
544 were not configured.
545
546- Don't do DDNS deletes if ddns-update-style is none.
547
548- Return relay agent information options in DHCPNAK. This prevents DHCPNAK
549 messages from being dropped when the relay agent information option contains
550 routing information.
551
552- Fix a problem where coming up in recover wouldn't result in an update
553 request being sent.
554
555- Add some more chatty messages when we start a recovery update and when it's
556 done.
557
558- Fix a possible problem where some state might have been left around
559 after the peer lost contact and regained contact about how many updates
560 were pending.
561
562- Don't nix a lease update because of a lease conflict. This test has
563 never (as far as I know) prevented a mistake, and it appears to cause
564 problems with failover.
565
566- Add support in rc history code for keeping a selective history, rather
567 than a history of all references and dereferences. This code is only used
568 when extensive additional debugging is enabled.
569
570 Changes since 3.0
571
572- Make allocators for hash tables. As a side effect, this fixes a memory
573 smash in the subclass allocation code.
574
575- Fix a small bug in omshell where if you try to close an object when
576 no object is open, it dumps core.
577
578- Fix an obscure coredump that could occur on shutdown.
579
580- Fix a bug in the recording of host declaration rubouts in the lease file.
581
582- Fix two potential spins in the host deletion code.
583
584- Fix a core dump that would happen if an application tried to update
585 a host object attribute with a null value.
586
587 Changes since 3.0 Release Candidate 12
588
589- Fix a memory leak in the evaluation code.
590
591- Fix an obscure core dump.
592
593- Print a couple of new warnings when parsing the configuration file
594 when crucial information is left out.
595
596- Log "no free leases" as an error.
597
598- Documentation updates.
599
600 Changes since 3.0 Release Candidate 11
601
602- Always return a subnet selection option if one is sent.
603
604- Fix a warning that was being printed because an automatic data
605 structure wasn't zeroed.
606
607- Fix some failover state transitions that were being handled
608 incorrectly.
609
610- When supersede_lease is called on a lease whose end time has already
611 expired, but for which a state transition has not yet been done, do
612 a state transition. This fixes the case where if the secondary
613 allocated a lease to a client and the lease "expired" while the
614 secondary was in partner-down, no expiry event would actually
615 happen, so the lease would remain active until the primary was
616 restarted.
617
618 Changes since 3.0 Release Candidate 10
619
620- Fix a bug that was preventing released leases from changing state
621 in failover-enabled pools.
622
623- Fix a core dump in the client identifier finder code (for host
624 declarations).
625
626- Finish fixing a bug where bogus data would sometimes get logged to
627 the dhclient.leases file because it was opened as descriptor 2.
628
629- Fix the Linux dhclient-script according to suggestions made by
630 several people on the dhcp-client mailing list.
631
632- Log successful DNS updates at LOG_INFO, not LOG_ERROR.
633
634- Print an error message and refuse to run if a failover peer is
635 defined but not referenced by any pools.
636
637- Correct a confusing error message in failover.
638
639 Changes since 3.0 Release Candidate 9
640
641- Fix a bug in lease allocation for Dynamic BOOTP clients.
642
643 Changes since 3.0 Release Candidate 8 Patchlevel 2
644
645- Fix a bug that prevented update-static-leases from working.
646
647- Document failover-state OMAPI object.
648
649- Fix a compilation error on SunOS 4.
650
651 Changes since 3.0 Release Candidate 8 Patchlevel 1
652
653- Fix a parsing bug that broke dns updates (both interim and ad-hoc).
654 This was introduced in rc8pl1 as an unintended result of the memory
655 leakage fixes that were in pl1.
656
657- Fix a long-standing bug where the server would record that an update
658 had been done for a client with no name, even though no update had
659 been done, and then when the client's lease expired the deletion of
660 that nonexistant record would time out because the name was the null
661 string.
662
663- Clean up the omshell, dhcpctl and omapi man pages a bit.
664
665 Changes since 3.0 Release Candidate 8
666
667- Fix a bug that could cause the DHCP server to spin if
668 one-lease-per-client was enabled.
669
670- Fix a bug that was causing core dumps on BSD/os in the presence of
671 malformed packets.
672
673- In partner-down state, don't restrict lease lengths to MCLT.
674
675- On the failover secondary, record the MCLT received from the primary
676 so that if we come up without a connection to the primary we don't
677 wind up giving out zero-length leases.
678
679- Fix some compilation problems on BSD/os.
680
681- Fix a bunch of memory leaks.
682
683- Fix a couple of bugs in the option printer.
684
685- Fix an obscure error reporting bug in the dns update code, and also
686 make the message clearer when a key algorithm isn't supported.
687
688- Fix a bug in the tracing code that prevented trace runs that used
689 tcp connections from being played back.
690
691- Add some additional debugging capability for catching memory leaks
692 on exit.
693
694- Make the client release the lease correctly on shutdown.
695
696- Add some configurability to the build system.
697
698- Install omshell manual page in man1, not man8.
699
700- Craig Gwydir sent in a patch that fixes a long-standing bug in the
701 DHCP client that could cause core dumps, but that for some reason
702 hadn't been noticed until now.
703
704 Changes since 3.0 Release Candidate 7
705
706- Fix a bug in failover where we weren't sending updates after a
707 transition from communications-interrupted to normal.
708
709- Handle expired/released/reset -> free transition according to the
710 protocol specification (this works - the other way not only wasn't
711 conformant, but also didn't work).
712
713- Add a control object in both client and server that allows either
714 daemon to be shut down cleanly.
715
716- When writing a lease, if we run out of disk space, shut down the
717 output file and insist on writing a new one before proceeding.
718
719- In the server, if the OMAPI listener port is occupied, keep trying
720 to get it, rather than simply giving up and exiting.
721
722- Support fetching variables from leases and also updating and adding
723 variables to leases via OMAPI.
724
725- If two failover peers have wildly different clocks, refuse to start
726 doing failover.
727
728- Fix a bug in the DNS update code that could cause core dumps when
729 running on alpha processors.
730
731- Fixed a bug in ddns updates for static lease entries, thanks to a
732 patch from Andrey M Linkevitch.
733
734- Add support for Darwin/MacOS X
735
736- Install omshell (including new documentation).
737
738- Support DNS updates in the client (this is a very obscure feature
739 that most DHCP client users probably will not be able to use).
740
741- Somewhat cleaner status logging in the client.
742
743- Make OMAPI key naming syntax compatible with the way keys are
744 actually named (key names are domain names).
745
746- Fix a bug in the lease file writer.
747
748- Install DHCP ISC headers in a different place than BIND 9 ISC
749 headers, to avoid causing trouble in BIND 9 builds.
750
751- Don't send updates for attributes on an object when the attributes
752 haven't changed. Support deleting attributes on remote objects.
753
754- Fix a number of bugs in omshell, and add the unset and refresh
755 statements.
756
757- Handle disconnects in OMAPI a little bit more intelligently (so that
758 the caller gets ECONNRESET instead of EINVAL).
759
760- Fix a bunch of bugs in the handling of clients that have existing
761 leases when the try to renew their leases while failover is
762 operating.
763
764 Changes since 3.0 Release Candidate 6
765
766- Fix a core dump that could happen when processing a DHCPREQUEST from
767 a client that had a host declaration that contained both a
768 fixed-address declaration and a dhcp-client-identifier option
769 declaration, if the client identifier was longer than nine bytes.
770
771- Fix a memory leak that could happen in certain obscure cases when
772 using omapi to manipulate leases.
773
774- Fix some bugs and omissions in omshell.
775
776
777 Changes since 3.0 Release Candidate 5
778
779- Fix a bug in omapi_object_dereference that prevented objects in
780 chains from having their reference counts decreased on dereference.
781
782- Fix a bug in omapi_object_dereference that would prevent object
783 chains from being freed upon removal of the last reference external
784 to the chain.
785
786- Fix a number of other memory leaks in the OMAPI protocol subsystem.
787
788- Add code in the OMAPI protocol handler to trace memory leakage.
789
790- Clean up the memory allocation/reference history printer.
791
792- Support input of dotted quads and colon-separated hex lists as
793 attribute values in omshell.
794
795- Fix a typo in the Linux interface discovery code.
796
797- Conditionalize a piece of trace code that wasn't conditional.
798
799 Changes since 3.0 Release Candidate 4
800
801- Fix a bug that would prevent leases from being abandoned properly on
802 DHCPDECLINE.
803
804- Fix failover peer OMAPI support.
805
806- In failover, correctly handle expiration of leases. Previously,
807 leases would never be reclaimed because they couldn't make the
808 transition from EXPIRED to FREE.
809
810- Fix some broken failover state transitions.
811
812- Documentation fixes.
813
814- Take out an unnecessary check in DHCP relay agent information option
815 stashing code that was preventing REBINDING clients from rebinding.
816
817- Prevent failover peers from allocating leases in DHCPREQUEST
818 processing if the lease belongs to the other server.
819
820- Record server version in lease file introductory comment.
821
822- Correctly report connection errors in OMAPI and failover.
823
824- Make authentication signature algorithm name comparisons in OMAPI
825 case-insensitive.
826
827- Fix compile problem on SunOS 4.x
828
829- If a signature algorithm is not terminated with '.', terminate it so
830 that comparisons between fully-qualified names will work
831 consistently.
832
833- Different SIOCGIFCONF probe code, may "fix" problem on some Linux
834 systems with the probe not working correctly.
835
836- Don't allow user to type omapi key on command line of omshell.
837
838 Changes since 3.0 Release Candidate 3
839
840- Do lease billing on startup in a way that I *think* will finally do
841 the billing correctly - the previous method could overbill as a
842 result of duplicate leases.
843
844- Document OMAPI server objects.
845
846 Changes since 3.0 Release Candidate 2 Patchlevel 1
847
848- Fix some problems in the DDNS update code. Thanks to Albert
849 Herranz for figuring out the main problem.
850
851- Fix some reference counting errors on host entries that were causing
852 core dumps.
853
854- Fix a byte-swap bug in the token ring code, thanks to Jochen
855 Friedrich.
856
857- Fix a bug in lease billing, thanks to Jonas Bulow.
858
859 Changes since 3.0 Release Candidate 2
860
861- Change the conditions under which a DHCPRELEASE is actually
862 committed to be consistent with lease binding states rather than
863 using the lease end time. This may fix some problems with the
864 billing class code.
865
866- Fix a bug where lease updates would fail on Digital Unix (and maybe
867 others) because malloc was called with a size of zero.
868
869- Fix a core dump that happens when the DHCP server can't create its
870 trace file.
871
872 Changes since 3.0 Release Candidate 1 Patchlevel 1
873
874- Fix the dhcp_failover_put_message to not attempt to allocate a
875 zero-length buffer. Some versions of malloc() fail if you try to
876 allocate a zero-length buffer, and this was causing problems on,
877 e.g., Digital Unix.
878
879- Fix a case where the failover code was printing an error message
880 when no error had occurred.
881
882- Fix a problem where when a server went down and back up again, the
883 peer would not see a state transition and so would stay in the
884 non-communicating state.
885
886- Be smart about going into recover_wait.
887
888- Fix a problem in the failover implementation where peers would fail
889 to come into sync if interrupted in the RECOVER state. This could
890 have been the cause of some problems people have reported recently.
891
892- Fix a problem with billing classes where they would not be unbilled
893 when the client lease expired.
894
895- If select fails, figure out which descriptor is bad, and cut it out
896 of the I/O loop. This prevents a potentially nasty spin. I
897 haven't heard any report it in a while, but it came up consistently
898 in testing.
899
900- Fix a bug in the relay agent where if you specified interfaces on
901 the command line, it would fail.
902
903- Fix a couple of small bugs in the omapi connection object (no known
904 user impact).
905
906- Add the missing 3.0 Beta 1 lease conversion script.
907
908- Read dhcp client script hooks if they exist, rather than only if
909 they're executable.
910
911 Changes since 3.0 Release Candidate 1
912
913- Fix a memory smash that happens when fixed-address leases are used.
914 ANY SITE AT WHICH FIXED-ADDRESS STATEMENTS ARE BEING USED SHOULD
915 UPGRADE IMMEDIATELY. This has been a long-standing bug - thanks to
916 Alvise Nobile for discovering it and helping me to find it!
917
918- Fix a small bug in binary-to-ascii, thanks to H. Peter Anvin of
919 Transmeta.
920
921- There is a known problem with the DHCP server doing failover on
922 Compaq Alpha systems. This patchlevel is not a release candidate
923 because of this bug. The bug should be straightforward to fix, so
924 a new release candidate is expected shortly.
925
926- There is a known problem in the DDNS update code that is probably a
927 bug, and is not, as far as we know, fixed in this patchlevel.
928
929 Changes since 3.0 Beta 2 Patchlevel 24
930
931- Went over problematic failover state transitions and made them all
932 work, so that failover should now much less fragile.
933
934- Add some dhcpctl and omapi documentation
935
936- Fix compile errors when compiling with unusual predefines.
937
938- Make Token Ring work on Linux 2.4
939
940- Fix the Digital Unix BPF_WORDALIGN bug.
941
942- Fix some dhcp client documentation errors.
943
944- Update some parts of the README file.
945
946- Support GCC on SCO.
947
948 Changes since 3.0 Beta 2 Patchlevel 23
949
950- Fix a bug in the DNS update code where a status code was not being
951 checked. This may have been causing core dumps.
952
953- When parsing the lease file, if a lease declaration includes a
954 billing class statement, and the lease already has a billing class,
955 unbill the old class.
956
957- When processing failover transactions, where acks will be deferred,
958 process the state transition immediately.
959
960- Don't try to use the new SIOCGIFCONF buffer size detection code on
961 Linux 2.0, which doesn't provide this functionality.
962
963- Apply a patch suggested by Tuan Uong for a problem in dlpi.c.
964
965- Fix a problem in using the which command in the configure script.
966
967- Fix a parse error in the client when setting up an omapi listener.
968
969- Document the -n and -g flags to the client.
970
971- Make sure there is always a stdin and stdout on startup. This
972 prevents shell scripts from accidentally writing error messages into
973 configuration files that happen to be opened as stderr.
974
975- If an interface is removed, the client will now notice that it is
976 gone rather than spinning. This has only been tested on NetBSD.
977
978- The client will attempt to get an address even if it can't create a
979 lease file.
980
981- Don't overwrite tracefiles.
982
983- Fix some memory allocation bugs in failover.
984
985 Changes since 3.0 Beta 2 Patchlevel 22
986
987- Apply some patches suggested by Cyrille Lefevre, who is maintaining
988 the FreeBSD ISC DHCP Distribution port.
989
990- Fix a core dump in DHCPRELEASE.
991
992 Changes since 3.0 Beta 2 Patchlevel 21
993
994- This time for sure: fix the spin described in the changes for pl20.
995
996 Changes since 3.0 Beta 2 Patchlevel 20
997
998- Fix a problem with Linux detecting large numbers of interfaces (Ben)
999
1000- Fix a memory smash in the quotify code, which was introduced in
1001 pl19.
1002
1003- Actually fix the spin described in the changes for pl20. The
1004 previous fix only partially fixed the problem - enough to get it
1005 past the regression test.
1006
1007 Changes since 3.0 Beta 2 Patchlevel 19
1008
1009- Fix a bug that could cause the server to abort if compiled with
1010 POINTER_DEBUG enabled.
1011
1012- Fix a bug that could cause the server to spin when responding to a
1013 DHCPREQUEST.
1014
1015- Apply Joost Mulders' suggested patches for DLPI on x86.
1016
1017- Support NUL characters in quoted strings.
1018
1019- Install unformatted man pages on SunOS.
1020
1021 Changes since 3.0 Beta 2 Patchlevel 18
1022
1023- Allow the server to be placed in partner-down state using OMAPI.
1024 (Damien Neil)
1025
1026- Implement omshell, which can be used to do arbitrary things to the
1027 server (in theory). (Damien Neil)
1028
1029- Fix a case where if a client had two different leases the server could
1030 actually dereference the second one when it hadn't been referenced,
1031 leading to memory corruption and a core dump. (James Brister)
1032
1033- Fix a case where a client could request the address of another client's
1034 lease, but find_lease wouldn't detect that the other client had it, and
1035 would attempt to allocate it to the client, resulting in a lease conflict
1036 message.
1037
1038- Fix a case where a client with more than one client identifier could be
1039 given a lease where the hardware address was correct but the client
1040 identifier was not, resulting in a lease conflict message.
1041
1042- Fix a problem where the server could write out a colon-separated
1043 hex list as a value for a variable, which would then not parse.
1044 The fix is to always write strings as quoted strings, with any
1045 non-printable characters quoted as octal escape sequences. So
1046 a file written the old way still won't work, but new files written
1047 this way will work.
1048
1049- Fix documentation for sending non-standard options.
1050
1051- Use unparsable names for unknown options. WARNING: this will
1052 break any configuration files that use the option-nnn convention.
1053 If you want to continue to use this convention for some options,
1054 please be sure to write a definition, like this:
1055
1056 option option-nnn code nnn = string;
1057
1058 You can use a descriptive name instead of option-nnn if you like.
1059
1060- Fix a problem where we would see a DHCPDISCOVER/DHCPOFFER/
1061 DHCPREQUEST/DHCPACK/DHCPREQUEST/DHCPNAK sequence. This was the
1062 result of a deceptively silly bug in supersede_lease.
1063
1064- Fix client script exit status check, according to a fix supplied by
1065 Hermann Lauer.
1066
1067- Fix an endianness bug in the tracefile support, regarding ICMP
1068 messages.
1069
1070- Fix a bug in the client where the medium would not work correctly if
1071 it contained quoted strings.
1072
1073 ** there was no pl17 **
1074
1075 Changes since 3.0 Beta 2 Patchlevel 16
1076
1077- Add support for transaction tracing. This allows the state of the
1078 DHCP server on startup, and all the subsequent transactions, to be
1079 recorded in a file which can then be played back to reproduce the
1080 behaviour of the DHCP server. This can be used to quickly
1081 reproduce bugs that cause core dumps or corruption, and also for
1082 tracking down memory leaks.
1083
1084- Incorporate some bug fixes provided by Joost Mulders for the DLPI
1085 package which should clear up problems people have been seeing on
1086 Solaris.
1087
1088- Fix bugs in the handling of options stored as linked lists (agent
1089 options, fqdn options and nwip options) that could cause memory
1090 corruption and core dumps.
1091
1092- Fix a bug in DHCPREQUEST handling that resulted in DHCPNAK messages
1093 not being send in some cases when they were needed.
1094
1095- Make the lease structure somewhat more compact.
1096
1097- Make initial failover startup *much* faster. This was researched
1098 and implemented by Damien Neil.
1099
1100- Add a --version flag to all executables, which prints the program
1101 name and version to standard output.
1102
1103- Don't rewrite the lease file every thousand leases.
1104
1105- A bug in nit.c for older SunOS machines was fixed by a patch sent in
1106 by Takeshi Hagiwara.
1107
1108- Fix a memory corruption bug in the DHCP client.
1109
1110- Lots of documentation updates.
1111
1112- Add a feature allowing environment variables to be passed to the
1113 DHCP client script on the DHCP client command line.
1114
1115- Fix client medium support, which had been broken for some time.
1116
1117- Fix a bug in the DHCP client initial startup backoff interval, which
1118 would cause two DHCPDISCOVERS to be sent back-to-back on startup.
1119
1120
1121 Changes since 3.0 Beta 2 Patchlevel 15
1122
1123- Some documentation tweaks.
1124
1125- Maybe fix a problem in the DLPI code.
1126
1127- Fix some error code space inconsistencies in ddns update code.
1128
1129- Support relay agents that intercept unicast DHCP messages to stuff
1130 agent options into them.
1131
1132- Fix a small memory leak in the relay agent option support code.
1133
1134- Fix a core dump that would occur if a packet was sent with no
1135 options.
1136
1137 Changes since 3.0 Beta 2 Patchlevel 14
1138
1139- Finish fixing a long-standing bug in the agent options code. This
1140 was causing core dumps and failing to operate correctly - in
1141 particular, agent option stashing wasn't working. Agent option
1142 stashing should now be working, meaning that agent options can be
1143 used in class statements to control address allocation.
1144
1145- Fix up documentation.
1146
1147- Fix a couple of small memory leaks that would have added up
1148 significantly in a high-demand situation.
1149
1150- Add a log-facility configuration parameter.
1151
1152- Fix a compile error on some older operating systems.
1153
1154- Add the ability in the client to execute certain statements before
1155 transmitting packets to the server. Handy for debugging; not much
1156 practical use otherwise.
1157
1158- Don't send faked-out giaddr when renewing or bound - again, useful
1159 for debugging.
1160
1161 Changes since 3.0 Beta 2 Patchlevel 13
1162
1163- Fixed a problem where the fqdn decoder would sometimes try to store
1164 an option with an (unsigned) negative length, resulting in a core
1165 dump on some systems.
1166
1167- Work around the Win98 DHCP client, which NUL-terminates the FQDN
1168 option.
1169
1170- Work around Win98 and Win2k clients that will claim they want to do
1171 the update even when they don't have any way to do it.
1172
1173- Fix some log messages that can be printed when failover is operating
1174 that were not printing enough information.
1175
1176- It was possible for a DHCPDISCOVER to get an allocation even when
1177 the state machine said the server shouldn't be responding.
1178
1179- Don't load balance DHCPREQUESTs from clients in RENEWING and
1180 REBINDING, since in RENEWING, if we heard it, it's for us, and in
1181 REBINDING, the client wouldn't have got to REBINDING if its primary
1182 were answering.
1183
1184- When we get a bogus state lease binding state transition, don't do
1185 the transition.
1186
1187
1188 Changes since 3.0 Beta 2 Patchlevel 12
1189
1190- Fixed a couple of silly compile errors.
1191
1192 Changes since 3.0 Beta 2 Patchlevel 11
1193
1194- Albert Herranz tracked down and fixed a subtle bug in the base64
1195 decoder that would prevent any key with an 'x' in its base64
1196 representation from working correctly.
1197
1198- Thanks to Chris Cheney and Michael Sanders, we have a fix for the
1199 hang that they both spotted in the DHCP server - when
1200 one-lease-per-client was set, the code to release the "other" lease
1201 could spin.
1202
1203- Fix a problem with alignment of the input buffer in bpf in cases
1204 where two packets arrive in the same bpf read.
1205
1206- Fix a problem where the relay agent would crash if you specified an
1207 interface name on the command line.
1208
1209- Add the ability to conditionalize client behaviour based on the
1210 client state.
1211
1212- Add support for the FQDN option, and added support for a new way of
1213 doing ddns updates (ddns update style interim) that allows more than
1214 one DHCP server to update the DNS for the same network(s). This
1215 was implemented by Damien Neil with some additional functionality
1216 added by Ted Lemon.
1217
1218- Damien added a "log" statement, so that the configuration file can
1219 be made to log debugging information and other information.
1220
1221- Fixed a bug that caused option buffers not to be terminated with an
1222 end option.
1223
1224- Fixed a long-standing bug in the support for option spaces where the
1225 options are stored as an ordered list rather than in a hash table,
1226 which could theoretically result in memory pool corruption.
1227
1228- Prevent hardware declarations with no actual hardware address from
1229 being written as something unparsable, and behave correctly in the
1230 face of a null hardware address on input.
1231
1232- Allow key names to be FQDNs, and qualify the algorithm name if it is
1233 specified unqualified.
1234
1235- Modify the DDNS update code so that it never prints the "resolver
1236 failed" message, but instead says *why* the resolver failed.
1237
1238- Officially support the subnet selection option, which now has an
1239 RFC.
1240
1241- Fix a build bug on MacOS X.
1242
1243- Allow administrator to disable ping checking.
1244
1245- Clean up dhcpd.conf documentation and add more information about how
1246 it works.
1247
1248 Changes since 3.0 Beta 2 Patchlevel 10
1249
1250- Fix a bug introduced during debugging (!) and accidentally committed
1251 to CVS.
1252
1253 Changes since 3.0 Beta 2 Patchlevel 9
1254
1255- Fix DHCP client handling of vendor encapsulated options.
1256
1257- Fix a bug in the handling of relay agent information options introduced
1258 in patchlevel 9.
1259
1260- Stash agent options on client leases by default, and use the stashed
1261 options at renewal time.
1262
1263- Add the ability to test the client's binding state in the client
1264 configuration language.
1265
1266- Fix a core dump in the DNS update code.
1267
1268- Fix some expression evaluation bugs that were causing updates to be
1269 done when no client hostname was received.
1270
1271- Fix expression evaluation debugging printfs.
1272
1273- Teach pretty_print_option to print options in option spaces other than
1274 the DHCP option space.
1275
1276- Add a warning message if the RHS of a not is not boolean.
1277
1278- Never select for more than a day, because some implementations of
1279 select will just fail if the timeout is too long (!).
1280
1281- Fix a case where a DHCPDISCOVER from an unknown network would be
1282 silently dropped.
1283
1284- Fix a bug where if a client requested an IP address for which a different
1285 client had the lease, the DHCP server would reallocate it anyway.
1286
1287- Fix the DNS update code so that if the client changes its name, the DNS
1288 will be correctly updated.
1289
1290 Changes since 3.0 Beta 2 Patchlevel 8
1291
1292- Oops, there was another subtle math error in the header-length
1293 bounds-checking.
1294
1295 Changes since 3.0 Beta 2 Patchlevel 7
1296
1297- Oops, forgot to byte-swap udp header length before bounds-checking it.
1298
1299 Changes since 3.0 Beta 2 Patchlevel 6
1300
1301- Fix a possible DoS attack where a client could cause the checksummer
1302 to dump core. This was a read, not a write, so it shouldn't be
1303 possible to exploit it any further than that.
1304
1305- Implement client- and server-side support for using the Client FQDN
1306 option.
1307
1308- Support for other option spaces in the client has been added. This
1309 means that it is now possible to define a vendor option space on the
1310 client, request options in that space from the server (which must
1311 define the same option space), and then use those options in the
1312 client. This also allows NWIP and Client FQDN options to be used
1313 meaningfully.
1314
1315- Add object initializer support. This means that objects can now be
1316 initialized to something other than all-zeros when allocated, which
1317 makes, e.g., the interface object support code a little more robust.
1318
1319- Fix an off-by-one bug in the host stuffer. This was causing host
1320 deletes not the work, and may also have been causing OMAPI
1321 connections to get dropped. Thanks to James Brister for tracking
1322 this one down!
1323
1324- Fixed a core dump in the interface discovery code that is triggered
1325 when there is no subnet declaration for an interface, but the server
1326 decides to continue running. Thanks to Shane Kerr for tracking
1327 down and fixing this problem.
1328
1329 Changes since 3.0 Beta 2 Patchlevel 5
1330
1331- Fix a bug in the recent enhancement to the interface discovery code
1332 to support arbitrary-length interface lists.
1333
1334- Support NUL-terminated DHCP options when initializing client-script
1335 environment.
1336
1337- Fix suffix operator.
1338
1339- Fix NetWare/IP option parsing.
1340
1341- Better error/status checking in dhcpctl initialization and omapi
1342 connection code.
1343
1344- Fix a potential memory smash in dhcpctl code.
1345
1346- Fix SunOS4 and (maybe) Ultrix builds.
1347
1348- Fix a bug where a certain sort of incoming packet could cause a core
1349 dump on Solaris (and probably elsewhere).
1350
1351- Add some more safety checks in error logging code.
1352
1353- Add support for ISC_R_INCOMPLETE in OMAPI protocol connection code.
1354
1355- Fix relay agent so that if an interface is specified on the command
1356 line, the relay agent does not dump core.
1357
1358- Fix class matching so that match if can be combined with match or
1359 spawn with.
1360
1361- Do not allow spurious leases in the lease database to introduce
1362 potentially bogus leases into the in-memory database.
1363
1364- Fix a byte-order problem in the client hardware address type code
1365 for OMAPI.
1366
1367- Be slightly less picky about what sort of hardware addresses OMAPI
1368 can install in host declarations.
1369
1370 Changes since 3.0 Beta 2 Patchlevel 4
1371
1372- Incorporated Peter Marschall's proposed change to array/record
1373 parsing, which allows things like the slp-agent option to be encoded
1374 correctly. Thanks very much to Peter for taking the initiative to
1375 do this, and for doing such a careful job of it (e.g., updating the
1376 comments)!
1377
1378- Added an encoding for the slp-agent option. :')
1379
1380- Fixed SunOS 4 build. Thanks to Robert Elz for responding to my
1381 request for help on this with patches!
1382
1383- Incorporated a change that should fix a problem reported by Philippe
1384 Jumelle where when the network connection between two servers is
1385 lost, they never reconnect.
1386
1387- Fix client script files other than that for NetBSD to actually use
1388 make_resolv_conf as documented in the manual page.
1389
1390- Fix a bug in the packet handling code that could result in a core
1391 dump.
1392
1393- Fix a bug in the bootp code where responses on the local net would
1394 be sent to the wrong MAC address. Thanks to Jerry Schave for
1395 catching this one.
1396
1397 Changes since 3.0 Beta 2 Patchlevel 3
1398
1399- In the DHCP client, execute client statements prior to using the values
1400 of options, so that the client configuration can overried, e.g., the
1401 lease renewal time.
1402
1403- Fix a reference counting error that would result in very reproducible
1404 failures in updates, as well as occasional core dumps, if a zone was
1405 declared without a key.
1406
1407- Fix some Linux 2.0 compilation problems.
1408
1409- Fix a bug in scope evaluation during execution of "on" statements that
1410 caused values not to be recorded on leases.
1411
1412- If the dhcp-max-message-size option is specified in scope, and the
1413 client didn't send this option, use the one specified in scope to
1414 determine the maximum size of the response.
1415
1416 Changes since 3.0 Beta 2 Patchlevel 2
1417
1418- Fix a case where spawning subclasses were being allocated
1419 incorrectly, resulting in a core dump.
1420
1421- Fix a case where the DHCP server might inappropriately NAK a
1422 RENEWING client.
1423
1424- Fix a place dhcprequest() where static leases could leak.
1425
1426- Include memory.h in omapip_p.h so that we don't get warnings about
1427 using memcmp().
1428
1429 Changes since 3.0 Beta 2 Patchlevel 1
1430
1431- Notice when SIOCFIGCONF returns more data than fit in the buffer -
1432 allocate a larger buffer, and retry. Thanks to Greg Fausak for
1433 pointing this out.
1434
1435- In the server, if no interfaces were configured, report an error and
1436 exit.
1437
1438- Don't ever record a state of 'startup'.
1439
1440- Don't try to evaluate the local failover binding address if none was
1441 specified. Thanks to Joseph Breu for finding this.