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- Committer: Bazaar Package Importer
- Author(s): Andrew Pollock
- Date: 2009-09-02 22:34:25 UTC
- Revision ID: james.westby@ubuntu.com-20090902223425-nypo7bkftxffq41m
Tags: upstream-4.1.0
Import upstream version 4.1.0
- files added:
- client
- client/scripts
- common
- common/tests
- contrib
- contrib/ms2isc
- dhcpctl
- doc
- doc/ja_JP.eucJP
- dst
- includes
- includes/arpa
- includes/isc-dhcp
- includes/minires
- includes/netinet
- includes/omapip
- minires
- omapip
- relay
- server
- tests
- tests/DHCPv6
- tests/failover
added
removed
RELNOTES
1
Internet Systems Consortium DHCP Distribution
2
Version 4.1.0
3
5 December 2008
4
5
Release Notes
6
7
NEW FEATURES
8
9
ISC DHCP 4.1.x includes several new DHCPv6 features that were not included
10
in DHCP 4.0.x. These include:
11
12
- Support for the rapid-commit option on the client side
13
14
- Prefix Delegation support
15
16
- IA_TA address support
17
18
- A basic DHCPv6 relay agent
19
20
- Basic and partial DHCPv6 leasequery support
21
22
There are a number of DHCPv6 limitations and features missing in this
23
release, which will be addressed in the future:
24
25
- Only Solaris, Linux, FreeBSD, NetBSD, and OpenBSD are supported.
26
27
- Only a single address is supported per IA.
28
29
- DHCPv6 includes human-readable text in status code messages. These
30
should be configurable, and probably localized via gettext() or the
31
like.
32
33
- The "host-identifier" option is limited to a simple token.
34
35
- The client and server can only operate DHCPv4 or DHCPv6 at a time,
36
not both. To use both protocols simultaneously, two instances of the
37
relevant daemon are required, one with the '-6' command line option.
38
39
For information on how to install, configure and run this software, as
40
well as how to find documentation and report bugs, please consult the
41
README file.
42
43
ISC DHCP uses standard GNU configure for installation. Please review the
44
output of "./configure --help" to see what options are available.
45
46
The system has only been tested on Linux, FreeBSD, and Solaris, and may not
47
work on other platforms. Please report any problems and suggested fixes to
48
<dhcp-users@isc.org>.
49
50
Changes since 4.1.0b1
51
52
- A missing "else" in dhcrelay.c could have caused an interface not to
53
be recognized.
54
55
Changes since 4.1.0a2
56
57
- A cosmetic bug in DHCPDECLINE processing was fixed which caused all
58
successful DHCPDECLINEs to be logged as "not found" rather than
59
"abandoned".
60
61
- Added configuration file examples for DHCPv6.
62
63
- Some failover debugging #defines have been better defined and some
64
high frequency messages moved to a deeper debugging symbol.
65
66
- The CLTT parameter in failover is now only updated by client activity,
67
and not by failover binding updates (taking on the peer's CLTT).
68
69
- Failover BNDUPD messages are now discarded if they conflict with an
70
update that has been transmitted, but not acknowledged.
71
72
- A bug cleaning up unknown-xxx temporary option definitions was fixed.
73
74
- Delayed-ack is now a compile-time option, compiled out by default.
75
This feature is simply too experimental for right now, and causes
76
some problems to some failover installations. We will revisit this
77
in future releases.
78
79
- The !inet_pton() call in res_mkupdrec was adjusted to '<= 0' as
80
inet_pton returns either 1, 0, or -1.
81
82
- A dhclient-script for MacOS X has been included, which enables
83
'dhclient -6' support.
84
85
Changes since 4.1.0a1
86
87
- Corrected list of failover state values in dhcpd man page.
88
89
- Fixed a bug that caused some request types to be logged incorrectly.
90
91
- Clients that sent a parameter request list containing the
92
routers option before the subnet mask option were receiving
93
only the latter. Fixed.
94
95
- The server wasn't always sending the FQDN option when it should.
96
97
- A partner-down failover server no longer emits 'peer holds all free leases'
98
if it is able to newly-allocate one of the peer's leases.
99
100
- Fixed a coredump when adding a class via OMAPI.
101
102
- Check whether files are zero length before trying to parse them.
103
104
- Ari Edelkind's PARANOIA patch has been included and may be compiled in
105
via two ./configure parameters, --enable-paranoia and
106
--enable-early-chroot.
107
108
- ./configure was extended to cover many optional build features, such
109
as failover, server tracing, debugging, and the execute() command.
110
111
- There is now a default 1/4 of a second scheduled delay between delayed
112
fsync()'s, it can be configured by the max-ack-delay configuration
113
parameter.
114
115
- A bug was fixed where the length of a hostname was miscalculated, so that
116
hosts were given odd-looking domain names ("foo.bar.ba.example.com").
117
118
- Shared network selection should be done from the innermost relay
119
valid link-address field, rather than the outermost.
120
121
- Prefix pools are attached to shared network scopes.
122
123
- Merged IA_XX related structures.
124
125
- Add DHCPv6 files in configure.
126
127
- A memory leak when using omapi has been fixed.
128
129
- DHCPv6 vendor-class options (VSIO) are now only sent when they appear
130
on the DHCPv6 ORO. This resolves a bug where VSIO options were placed
131
in IA_NA encapsulated options fields.
132
133
- Integrated client with stateless, temporary address and prefix delegation
134
support.
135
136
- A double-dereference in dhclient transmission of DHCPDECLINEs was
137
repaired.
138
139
- Fix handling of format code 'Z'.
140
141
- Support "-1" argument in DHCPv6.
142
143
- Merge DHCPv6-only "dhcrelay6" into general-purpose "dhcrelay" (use
144
"-6" option to select DHCPv6 mode).
145
146
- Fix handling of -A and -a flags in dhcrelay; it was failing to expand
147
packet size as needed to add relay agent options.
148
149
- A bug in subnet6 parsing where options contained in subnet6 clauses would
150
not be applied to clients addressed within that network was repaired.
151
152
- When configuring a "subnet {}" or "subnet6 {}" without an explicit
153
shared-network enclosing it, the DHCP software would synthesize a
154
shared-network to contain the subnet. However, all configuration
155
parameters within the subnet more intuitively belong "to any client
156
on that interface", or rather the synthesized shared-network. So,
157
when a shared-network is synthesized, it is used to contain the
158
configuration present inside the subnet {} clause. This means that
159
the configuration will be valid for all clients on that network, not
160
just those addressed out of the stated subnet. If you intended the
161
opposite, the workaround is to explicitly configure an empty
162
shared-network.
163
164
- A bug was fixed where Information-Request processing was not sourcing
165
configured option values.
166
167
- A warning was added since the DHCPv6 processing software does not yet
168
support class statements.
169
170
- Compliation warnings on GCC 4.3 relating to bootp source address
171
selection were repaired.
172
173
- The v6 BSD socket method was updated to use a single UDP BSD socket
174
no matter how many interfaces are involved, differentiating the
175
interfaces the packets were received on by the interface index supplied
176
by the OS.
177
178
- The relay agent no longer listens to the All DHCP Servers Multicast
179
address.
180
181
- A bug was fixed in data_string_sprintfa() where va_start was only called
182
once for two invocations of vsprintf() variants.
183
184
- ERO (RFC 4994) server support.
185
186
- Basic and partial DHCPv6 leasequery support.
187
188
- Reliable DHCPv6 release (previous behavior, send release and exit, is
189
still available with dhclient -6 -1 -r).
190
191
Changes since 4.0.0 (new features)
192
193
- Added DHCPv6 rapid commit support.
194
195
- Added explicit parser support for zero-length DHCP options, such as
196
rapid-commit, via format code 'Z'.
197
198
- It's now possible to update the "ends" field of a lease with OMAPI.
199
This is useful if you want not only to release a lease, but also make
200
it available for reuse right away. Hat tip to Christof Chen.
201
202
- Fixed definition of the iaaddr hash functions to use the correct
203
functions when referencing and dereferencing memory.
204
205
- Some definitions not in phase with the IANA registry were updated.
206
207
- Allocated interface IDs are better controlled ('u' bit set to zero,
208
reserved IDs avoided).
209
210
- Unicast options are taken into account only for RENEWs.
211
212
- NoAddrsAvail answers to SOLICITs are always ADVERTISEs even when a SOLICIT
213
carries a rapid-commit option.
214
215
- Return in place of raise an impossible condition when one tries to release
216
an empty active lease.
217
218
- Timer granularity is now 1/100s in the DHCPv6 client.
219
220
- The dhclient-script was updated to create a host route for the default
221
gateway if the supplied subnet mask for an IPv4 address was a /32. This
222
allows the client to work in 'captive' network environments, where the
223
operator does not want clients to crosstalk directly.
224
225
- MINUS tokens should be parseable again.
226
227
- Multiple (up to "delayed-ack x;" maximum) DHCPv4 packets are now queued and
228
released in bursts after single fsync() events when the upper limit is
229
reached or if the receiving sockets go dry. The practical upshot is
230
that fsync-coupled server performance is now multiplicitively increased.
231
The default delayed ack limit is 28. Thanks entirely to a patch from
232
Christof Chen.
233
234
Changes since 4.0.0 (bug fixes)
235
236
- DHCP now builds on AIX.
237
238
- Exit with warning when DHCPv6-specific statements are used in the
239
config file but -6 is not specified.
240
241
- Fixed "--version" flag in dhcrelay
242
243
- The 'min-secs' configuration parameter's log message has been updated to
244
be more helpful.
245
246
- The warning logged when an address range doesn't fit in the subnets
247
they were declared has been updated to be more helpful and identify the
248
typo in configuration that created the spanning addresses.
249
250
- A bug in failover pool rebalancing that caused POOLREQ message ping-pongs
251
was repaired.
252
253
- A flaw in failover pool rebalancing that could cause POOLREQ messages to
254
be sent outside of the min-balance/max-balance scheduled intervals has
255
been repaired.
256
257
- A cosmetic bug during potential-conflict recovery that caused the peer's
258
'conflict-done' state message to be logged as 'unknown-state' has been
259
repaired. It is now logged correctly.
260
261
- A bug was fixed where the 'giaddr' may be used to find the client's subnet
262
rather than its own 'ciaddr'.
263
264
- A log message was introduced to clarify the situation where a failover
265
'address' parameter (the server's local address) did not resolve to an
266
IPv4 address.
267
268
- The minimum site code value was set to 224 in 3.1.0 to track RFC3942. This
269
broke a lot of legacy site local configurations. The new code in place will
270
track site local space minimum option codes and logs a warning to encourage
271
updates and exploration of site local code migration problems. Option
272
codes less than 128 in site local spaces remain inaccessible.
273
274
- A possible relay agent option bug was repaired where random server
275
initialization state may have been used to signal the relay agent
276
information options sub-option code for the 'END' of the option space.
277
278
- Fixes to allow code to compile and run on Solaris 9.
279
280
- Fixes to allow code to compile on Mac OS X Leopard (10.5).
281
282
- When server is configured with options that it overrides, a warning is
283
issued when the configuration file is read, rather than at the time the
284
option is overridden. This was important, because the warning was given
285
every time the option was overridden, which could create a lot of
286
unnecessary logging.
287
288
- Fixed a compilation problems on platforms that define a value for FDDI,
289
which conflicts with a dhcp configuration syntax token by the same name.
290
291
- When a failover server suspects it has encountered a peer running a
292
version 3.0.x failover server, a warning that the failover wire protocol
293
is incompatible is printed.
294
295
- The failover server no longer issues a floating point error if it encounters
296
a previously undefined option code.
297
298
- Fix startup error messages to report a missing "subnet6 declaration", rather
299
than a missing "subnet declaration", when running as a DHCPv6 server.
300
301
- DHCPv6 client timestamp in DUID was based on the year 1970 rather
302
than the year 2000.
303
304
- Warn when attempting to use a hardware parameter in DHCPv6.
305
306
- DHCPv6 released resources are now marked as released by the client.
307
308
- 'Soft' bindings have no more side-effects.
309
310
Changes since 4.0.0b3
311
312
- The reverse dns name for PTR updates on IPv6 addresses has been fixed to
313
use ip6.arpa. rather than default to in-addr.arpa and require user
314
configuration.
315
316
- dhc6_lease_destroy() and dhc6_ia_destroy() now set lease and IA pointers
317
to NULL after freeing, to prevent subsequent accesses to freed memory.
318
319
- The DHCPv6 server would not send the preference option unless the
320
client requested it, via the ORO. This has been fixed, so the DHCPv6
321
server will always send the preference value if it is configured.
322
323
- When addresses were passed as hints to the server in an IA, they were
324
incorrectly handled, sometimes being treated as an error. Now the
325
server will treat these as hints and ignore them if it cannot supply
326
a requested address.
327
328
- If the client had multiple addresses, and one expired (was not renewed
329
by the server), the client would continue to attempt to renew the same
330
old address over and over. Now, the client will omit any expired
331
addresses from future Confirm, Renew, or Rebind messages.
332
333
- dhclient -6 will now select renew/rebind timers based upon the longest
334
address expiration time rather than the shortest expiration time, in
335
order to avoid cascading renewals in the event a server elects not to
336
extend one of multiple IAADDR leases.
337
338
- The server now limits clients that request multiple addresses to one
339
address per IA by default, which can be adjusted through the
340
"limit-addrs-per-ia" configuration option.
341
342
- The DHCPv6 client now issues fresh transaction IDs on Renew and Rebind
343
message exchanges, rather than using the most recent ID.
344
345
- The DHCPv6 server now replies to Information-Request messages.
346
347
- A bug was fixed in the dhclient-script for BSDs to correctly carry error
348
codes through some conditions.
349
350
- The parsing of some options in the dhclient lease file, in particular
351
the success DHCPv6 status-code, was fixed.
352
353
- A bug was fixed that caused the DHCPv6 ORO option to be corrupted with
354
seemingly random values.
355
356
- A reference overleak in DHCPv6 shared network processing was repaired.
357
358
- ./configure now autodetects local database locations rather than trying
359
to put dhcpd.leases and dhclient.leases in /usr/local/var/db, which no
360
one ever has.
361
362
- Regression fix for bug where server advertised a IPv6 address in
363
response to a SOLICIT but would not return the address in response
364
to a REQUEST.
365
366
- A bug was fixed where the DHCPv6 server puts the NoAddrsAvail status
367
code in the IA_NA was fixed. The status code now appears in the root
368
level.
369
370
Changes since 4.0.0b2
371
372
- Clarified error message when lease limit exceeded
373
374
- Relative time may now be used as a qualifier for 'allow' and 'deny' access
375
control lists. These directives may be used to assist in re-addressing
376
address pools without having to constantly reconfigure the server. Please
377
see 'man dhcpd.conf' for more information on allow/deny 'after time' syntax.
378
Thanks to a patch from Christof Chen.
379
380
- The server will now include multiple IA_NA's and multiple IAADDRs within
381
them, if advertised by the client. It still only seeks to allocate one
382
new address.
383
384
Changes since 4.0.0b1
385
386
- Use different paths for PID and lease files when running in DHCPv4
387
or DHCPv6 mode, so that servers for both protcols can be run
388
simultaneously on a single interface.
389
390
- Fixed a buffer overflow error which could have allowed a denial
391
of service under unusual server configurations
392
393
- Eliminated a spurious error message from the client
394
395
- A number of bugs with the internal handling of lease state on the
396
server have been fixed. Some of these could cause server crashes.
397
398
- The peer_wants_leases() changes pulled up from 3.1.0 were corrected,
399
'never used' leases will no longer consistently shift between servers
400
on every pool rebalance run.
401
402
- sendmsg()/recvmsg() control buffers are now declared in such a way to
403
ensure they are correctly aligned on all (esp. 64-bit) architectures.
404
405
- The client leasing subsystem was streamlined and corrected to account
406
more closely for changes in client link attachment selection.
407
408
Changes since 4.0.0a3
409
410
- The DHCP server no longer requires a "ddns-update-style" statement,
411
and now defaults to "none", which means DNS updates are disabled.
412
413
- Log messages when failover peer names mismatch have been improved to
414
point out the problem.
415
416
- Bug where server advertised a IPv6 address in response to a SOLICIT
417
but would not return the address in response to a REQUEST. Thanks to
418
Dennis Kou for finding the bug.
419
420
- Fixed an error causing the server to lock up on lease expiration,
421
reported independently by Jothilingam Vasu and Dennis Kou.
422
423
- Fixed a ./configure bug where compile tests were failing due to
424
"-Werror" (unused variable) rather than the actual test failure. Lead
425
to inconsistent and unworkable auto-configurations.
426
427
- Compilation with DLPI and -Werror has been repaired.
428
429
- Error in decoding IA_NA option if multiple interfaces are present
430
fixed by Marcus Goller.
431
432
- DHCPv6 server Confirm message processing has been enhanced - it no
433
longer replies only to clients with host {} records, it now replies
434
as directed in RFC3315 section 18.2.2 - that is, to all clients
435
regardless of the existence of bindings.
436
437
- A core dump during expired lease cleanup has been repaired.
438
439
- DDNS updates state information are now stored in 'binding scopes' that
440
follow the leases through their lifecycles. This enables DDNS teardowns
441
on leases that are assigned and expired inbetween a server restart (the
442
state is recovered from dhcpd.leases). Arbitrary user-specified binding
443
scopes ('set var = "value";') are not yet supported.
444
445
- Additional compilation problems on HP/UX have been repaired.
446
447
Changes since 4.0.0a2
448
449
- Fix for startup where there are no IPv4 addresses on an interface.
450
Thanks to Marcus Goller for reporting the bug.
451
452
- Fixed file descriptor leak on listen failure. Thanks to Tom Clark.
453
454
- Bug in server configuration parser caused server to get stuck on
455
startup for certain bad pool declarations. Thanks to Guillaume
456
Knispel for the bug report and fix.
457
458
- Code cleaned to remove warnings reported by "gcc -Wall".
459
460
- DHCPv6 is now the default. You can disable DHCPv6 support using the
461
"--disable-dhcpv6" flag when you run the configure script.
462
463
- An internal database inconsistency bug was repaired where the server
464
would segfault if a client attempted to renew a lease that had been
465
loaded from persistent storage.
466
467
- 'request' and 'also request' syntaxes have been added to accommodate
468
the DHCPv6 client configuration. 'send dhcp6.oro' is no longer
469
necessary.
470
471
- Bug fixed where configuration file parsing did not work with
472
zero-length options; this made it impossible to set the
473
rapid-commit option.
474
475
- Bogus messages about host records with IPv4 fixed-addresses being of
476
non-128-bits in length were removed.
477
478
Changes since 4.0.0a1
479
480
- Bug in octal parsing fixed. Thanks to Bernd Fuhrmann for the report
481
and fix.
482
483
- Autoconf now supplies proper flags for Solaris DHCPv6 builds.
484
485
- Fix for parsing error on some IPv6 addresses.
486
487
- Invalid CIDR representation for IPv6 subnets or ranges now checked
488
for when loading configuration.
489
490
- Compilation on HP/UX has been repaired. The changes should generally
491
apply to any architecture that supplies SIOCGLIFCONF but does not
492
use 'struct lifconf' structures to pass values.
493
494
- Two new operators, ~= and ~~, have been integrated to implement
495
boolean matches by regular expression (such as may be used in
496
class matching statements). Thanks to a patch by Alexandr S.
497
Agranovsky, which underwent slight modification.
498
499
- Fix for icmp packets on 64-bit systems (bug introduced in 4.0).
500
501
- A bug was fixed in interface discovery wherein an error identifying
502
a server-configured interface with no IPv4 addresses would SEGV.
503
504
- Fixed a bug in which write_lease() might report a failure incorrectly
505
506
- Added support for DHCPv6 Release messages
507
508
- Added -x option to dhclient, which triggers dhclient processes
509
to exit gracefully without releasing leases first
510
511
- All binaries (client, server, relay) now change directories
512
to / before going into daemon mode, so as not to hold $CWD open
513
514
- Fixed a bug parsing DHCPv6 client-id's in host-identifier statements
515
516
- Fixed a bug with the 'ddns-updates' boolean server configuration
517
parameter, which caused the server to fail.
518
519
Changes since 4.0.0-20070413
520
521
- Old (expired) leases are now cleaned.
522
523
- IPv6 subnets now have support for arbitrary allocation ranges via
524
a new 'range6' configuration directive.
525
526
- An obviated option code hash lookup to find D6O_CLIENTID was removed.
527
528
- Corrected some situations where variables might be used without being
529
initialized.
530
531
- Silenced several other compiler warnings.
532
533
- Include the more standard sys/uio.h rather than rely upon other
534
header files to include it (fixes a BSD 4.2 compile failure).
535
536
- Duplicate dhclient-script updates for DHCPv6 to all provided scripts.
537
538
- DHCPv4 I/O methods that failed to sense hardware address were corrected.
539
540
- DHCPv4 is now the default (as documented) rather than DHCPv6. The default
541
was set to DHCPv6 to facilitate ease early development, and forgotten.
542
543
- Corrected a segmentation violation in DHCPv4 socket processing.
544
545
- dhclient will now fork() into the background once it binds to an
546
IPv6 address, or immediately if the -n flag is supplied.
547
548
- -q is now the default behaviour on dhclient, with -d or -v enabling
549
non-quiet (stderr logging) mode.
550
551
- Fix documentation of the domain-search atom (quoted, with commas).
552
553
- Document DHCPv6 options presently in the default table.
554
555
- Replaced ./configure shellscripting with GNU Autoconf.
556
557
Changes since 3.1.0 (NEW FEATURES)
558
559
- DHCPv6 Client and Server protocol support. Use '-6' to run the daemons
560
as v6-only. Use '-4' to run the daemons as v4-only (default. There is
561
no support currently for both.
562
563
- Server support for multiple IA_NA options, containing at most one
564
IAADDR option.
565
566
- Client support for one IA_NA option, containing any number of IAADDR
567
options.
568
569
- Server support for the DHCPv6 Information-request message.
570
571
- Inappropriate unicast DHCPv6 messages sent to the server are now
572
discarded, and this has rearchitected the IO system slightly.
573
574
- The DHCPv6 server DUID defaults to type 1, is persistently stored in
575
the leases database, and can be over-ridden (either completely, or by
576
specifying type 1 or type 2).
577
578
- The server only uses Rapid-Commit if it has been configured with the
579
Rapid-Commit option and the client requests it.
580
581
- DDNS support. We now update AAAA records in the same place we would
582
update A records, if we have an IPv6 address. We also generate IP6.ARPA
583
style names for PTR records if we're dealing with an IPv6 address. Both
584
A and AAAA updates are done using the same 'fqdn.' virtual option space
585
(although the DHCPv4 FQDN and DHCPv6 FQDN options are formatted
586
differently, they both use the same code here).
587
588
- The Linux dhclient-script attempts to set and remove assigned addresses,
589
and to configure /etc/resolv.conf from nameserver and domain name
590
configurations. It can be extended to configure other parameters.
591
592
- Initial DHCPv6 lease support.
593
594
- The IO system now tracks all local IP addresses, so that the DHCP
595
applications (particularly the dhcrelay) can discern between what frames
596
were transmitted to it, and what frames are being carried through it which
597
it should not intercept.
598
599
Changes since 3.1.0 (Maintenance)
600
601
- A bug was repaired where MAC Address Affinity for virgin leases always
602
mapped to the primary. Virgin leases now have an interleaved preference
603
between primary and secondary.
604
605
- A bug was repaired where MAC Address Affinity for clients with no client
606
identifier was sometimes mishashed to the peer. Load balancing during
607
runtime and pool rebalancing were opposing.
608
609
- An assertion in lease counting relating to reserved leases was repaired.
610
611
- The subnet-mask option inclusion now conforms with RFC2132 section 3.3;
612
it will only appear prior to the routers option if it is present on the
613
Parameter-Request-List. The subnet-mask option will also only be
614
included by default (if it is not on the PRL) in response to DISCOVER
615
or REQUEST messages.
616
617
- The FQDN option is only supplied if the client supplied an FQDN option or
618
if the FQDN option was explicitly requested on the PRL.
619
620
- Dynamic BOOTP leases are now load balanced in failover.
621
622
Changes since 3.1.0rc1
623
624
- The parse warning that 'deny dyanmic bootp;' must be configured for
625
failover protected subnets was removed.
626
627
Changes since 3.1.0b2
628
629
- Failover rebalance events no longer play ping pong with round errors
630
(moving leases between free and back to backup where there are an
631
odd number of leases).
632
633
- The 'pool' log line has been split into two messages, one before the
634
rebalance run, and one after.
635
636
- Any queued BNDACKs are transmitted before transmitting new BNDUPDs.
637
This enforces the correct sequence of events for the remote server
638
processing these messages.
639
640
Changes since 3.1.0b1
641
642
- Fixed a bug that caused OMAPI clients to freeze when opening lease
643
objects.
644
645
- A new server config option "fqdn-reply" specifies whether the server
646
should send out option 81 (FQDN). Defaults to "on". If set to "off",
647
the FQDN option is not sent, even if the client requested it. This is
648
needed because some clients misbehave otherwise. Thanks to Christof Chen
649
at Allianz.
650
651
- Allow trace output files (-tf option) to be overwritten, rather than
652
crashing dhcpd if the file already exists
653
654
- A bug was fixed that caused dhcpd to segfault if a pool was declared
655
outside the scope of a subnet in dhcpd.conf.
656
657
- Some uninitialized values were repaired in dhcpleasequery.c that
658
caused the server to abort.
659
660
- A new server config option, 'do-reverse-updates', has been added
661
which causes the server to abstain from performing updates on PTR
662
records. Thanks to a patch from Christof Chen at Allianz.
663
664
- A bug was repaired in subencapsulation support, where spaces separated
665
by empty spaces would not get included.
666
667
- A bug in dhclient was repaired which caused it to send parameter request
668
lists of 55 bytes in length no matter how long the declared PRL was.
669
670
- 'dhcp.c(3953): non-null pointer' has been repaired. This fixes a flaw
671
wherein the DHCPv4 server may ignore a configured server-identifier.
672
673
- A flaw in failover startup sequences was repaired that sometimes left
674
the primary DHCP server's pool rebalance schedules unscheduled.
675
676
- Corrected a flaw that broke encapsulated spaces included due to presence
677
on the parameter request list.
678
679
Changes since 3.1.0a3
680
681
- Some spelling fixes.
682
683
Changes since 3.1.0a2
684
685
- A bug was fixed where attempting to permit leasequeries results in a
686
fatal internal error, "Unable to find server option 49".
687
688
- A bug was fixed in dhclient rendering the textual output form of the
689
domain-search option syntax.
690
691
Changes since 3.1.0a1
692
693
- A bug in the FQDN universe that added FQDN codes to the NWIP universe's
694
hash table was repaired.
695
696
- The servers now try harder to transmit pending binding updates when
697
entering normal state.
698
699
- UPDREQ/UPDREQALL handling was optimized - it no longer dequeues and
700
requeues all pending updates. This should reduce the number of spurious
701
'xid mismatch' log messages.
702
703
- An option definition referencing leak was fixed, which resulted in early
704
termination of dhclient upon the renewal event.
705
706
- Some default hash table sizes were tweaked, some upwards, some downwards.
707
3.1.0a1's tables resulted in a reduction in default server memory use.
708
The new selected values provide more of a zero sum (increasing the size
709
of tables likely to be populated, decreasing the size of tables unlikely).
710
711
- Lease structures appear in three separate hashes: by IP address, by UID,
712
and by hardware address. One type of table was used for all three, and
713
improvements to IP address hashing were applied to all three (so UID and
714
hardware addresses were treated like 4-byte integers). There are now two
715
types of tables, and the uid/hw hashes use functions more appropriate
716
to their needs.
717
718
- The max-lease-misbalance percentage no longer causes scheduled rebalance
719
runs to be skipped: it still governs the schedule, but every scheduled
720
run will attempt balance.
721
722
- A segfault bug in recursive encapsulation support has been corrected.
723
724
Changes since 3.0 (New Features)
725
726
- A workaround for certain STSN servers that send a mangled domain-name
727
option was introduced for dhclient. The client will now accept corrupted
728
server responses, if they contain a valid DHCP_MESSAGE_TYPE (OFFER, ACK,
729
or NAK). The server will continue to not accept corrupt client packets.
730
731
- Support for 'reserved' (pseudo-static) and BOOTP leases via failover
732
was introduced.
733
734
- Support for adding, removing, and managing class and subclass statements
735
via OMAPI.
736
737
- The failover implementation was updated to comply with revision 12 of
738
the protocol draft.
739
740
- 'make install' now creates the initial zero-length dhcpd.leases file if
741
one does not already exist on the system.
742
743
- RFC3942 compliance, site-local option spaces start at 224 now, not 128.
744
745
- The Load Balance Algorithm was misimplemented. The current implementation
746
matches RFC 3074.
747
748
- lcase() and ucase() configuration expressions have been added which adjust
749
their arguments from upper to lower and lower to upper cases respectively.
750
Thanks to a patch from Albert Herranz.
751
752
- The dhclient 'reject ...;' statement, which rejects leases given by named
753
server-identifiers, now permits address ranges to be specified in CIDR
754
notation. Thanks to a patch from David Boyce.
755
756
- The subnet-mask option is now supplied by default, but at lowest
757
priority. This helps a small minority of clients that provide parameter
758
request lists, but do not list the subnet-mask option because they were
759
designed to interoperate with a server that behaves in this manner.
760
761
- The FQDN option is similarly supplied even if it does not appear on the
762
parameter request list, but not to the exclusion of options that do
763
appear at the parameter request list. Up until now it had ultimate
764
priority over the client's parameter request list.
765
766
- Varying option space code and length bit widths (8/16/32) are now
767
supported. This is a milestone in achieving RFC 3925 "VIVSO" and
768
DHCPv6 support.
769
770
- A new common (server or client) option, 'db-time-format local;', has
771
been added which prints the local time in /var/db/dhcpd.leases rather
772
than UTC. Thanks to a patch from Ken Lalonde.
773
774
- Some patches to improve DHCP Server startup speed from Andrew Matheson
775
have been incorporated.
776
777
- Failover pairs now implement 'MAC Affinity' on leases moving from the
778
active to free states. Leases that belonged to the failover secondary
779
are moved to BACKUP state rather than FREE upon exiting EXPIRED state.
780
If lease rebalancing must move leases, it tries first to move leases
781
that belong to the peer in need.
782
783
- The server no longer sends POOLREQ messages unless the pool is severely
784
misbalanced in the peer's favor (see 'man dhcpd.conf' for more details).
785
786
- Pool rebalance events no longer happen upon successfully allocating a
787
lease. Instead, they happen on a schedule. See 'man dhcpd.conf' for the
788
min-balance and max-balance statements for more information.
789
790
- The DHCP Relay Agent Information Option / Link Selection Sub-Option
791
is now supported. (See RFC3527 for details).
792
793
- A new DDNS related server option, update-conflict-detection, has been
794
added. If this option is enabled, dhcpd will perform normal DHCID
795
conflict resolution (the default). If this option is disabled, it will
796
instead trust the assigned name implicitly (removing any other bindings
797
on that name). This option has not been made available in dhclient.
798
799
- In those cases where the DHCP software manufactures an IP header (to
800
transmit via bpf, lpf, etc), the IP TTL the software selects has been
801
increased from 16 to 128. This is intended to match Microsoft Windows
802
DHCP Client behaviour, to increase compatibility.
803
804
- 'ignore client-updates;' now has behaviour that is different from
805
'deny client-updates;'. The client's request is not truly ignored,
806
rather it is encouraged. Should this value be configured, the server
807
updates DNS as though client-updates were set to 'deny'. That is, it
808
enters into DNS whatever it is configured to do already, provided it is
809
configured to. Then it sends a response to the client that lets the
810
client believe it is performing client updates (which it will), probably
811
for a different name. In essence, this lets the client do as it will,
812
ignoring this aspect of their request.
813
814
- Support for compressed 'domain name list' style DHCP option contents, and
815
in particular the domain search option (#119) was added.
816
817
- The DHCP LEASEQUERY protocol as defined in RFC4388 is now implemented.
818
LEASEQUERY lets you query the DHCP server for information about a lease,
819
using either an IP address, MAC address, or client identifier. Thanks
820
to a patch from Justin Haddad.
821
822
- DHCPD is now RFC2131 section 4.1 compliant (broadcast to all-ones ip and
823
ethernet mac address) on the SCO platform specifically without any strange
824
ifconfig hacks. Many thanks go to the Kroger Co. for donating the
825
hardware and funding the development.
826
827
- A new common configuration executable statement, execute(), has been
828
added. This permits dhcpd or dhclient to execute a named external
829
program with command line arguments specified from other configuration
830
language. Thanks to a patch written by Mattias Ronnblom, gotten to us
831
via Robin Breathe.
832
833
- A new dhcp server option 'adaptive-lease-time-threshold' has been added
834
which causes the server to substantially reduce lease-times if there are
835
few (configured percentage) remaining leases. Thanks to a patch submitted
836
from Christof Chen.
837
838
- Encapsulated option spaces within encapsulated option spaces is now
839
formally supported.
840
841
Changes since 3.0.6rc1
842
843
- supersede_lease() now requeues leases in their respective hardware
844
address hash bucket. This mirrors client identifier behaviour.
845
846
Changes since 3.0.5
847
848
- Assorted fixes for broken network devices: Packet length is now
849
determined from the IP header length field to finally calculate the
850
UDP payload length, because some NIC drivers return more data than
851
they actually received.
852
853
- UDP packets are now stored in aligned data structures.
854
855
- A logic error in omapi interface code was repaired that might result in
856
incorrectly indicating 'up' state when any flags were set, rather than
857
specifically the INTERFACE_REQUESTED flag. Thanks to a patch from
858
Jochen Voss which got to us via Andrew Pollock at Debian.
859
860
- A reference leak on binding scopes set by ddns updates was repaired.
861
862
- A memory leak in the minires_nsendsigned() function call was repaired.
863
Effectively, this leaked ~176 bytes per DDNS update.
864
865
- In the case where an "L2" DHCP Relay Agent (one that does not set giaddr)
866
was directly attached to the same broadcast domain as the DHCP server,
867
the RFC3046 relay agent information option was not being returned to the
868
relay in the server's replies. This was fixed; the dhcp server no longer
869
requires the giaddr to reply with relay agent information. Note that
870
this also improves compatibility with L2 devices that "intercept" DHCP
871
packets and expect relay agent information even in unicast (renewal)
872
replies. Thanks to a patch from Pekka Silvonen.
873
874
- A bug was fixed where the BOOTP header 'sname' field had a value, the
875
copy written to persistent storage was actually the contents of the
876
'file' field.
877
878
- A bug was fixed where the nwip virtual option space was referencing
879
the fqdn option's virtual option space's option cache.
880
881
- Timestamp parsing errors that indicated missing "minutes" fields rather
882
than the actually missing "seconds" fields have been repaired thanks to
883
a patch from Kevin Steves.
884
885
- A grammar error in the dhclient.8 manpage was repaired thanks to a patch
886
from Chris Wagner.
887
888
- Several spelling typos were repaired, and some cross-references to other
889
relevant documents were included in the manpages, thanks to a patch
890
by Andrew Pollock which got to us via Tomas Pospisek.
891
892
- Some bugs were fixed in the 'emergency relay agent options hologram'
893
which is used to retain relay agent option contents from when the
894
client was in INIT or REBIND states. This should solve problems where
895
relay agent options were not echoed from the server, even when giaddr
896
was set.
897
898
- dhclient now closes its descriptor to dhclient.leases prior to executing
899
dhclient-script. Thanks to a patch from Tomas Pospisek.
900
901
- The server's "by client-id" and "by hardware address" hash table lists
902
are now sorted according to the preference to re-allocate that lease to
903
returning clients. This should eliminate pool starvation problems
904
arising when "INIT" clients were given new leases rather than presently
905
active ones.
906
907
Changes since 3.0.5rc1
908
909
- A bug was repaired in fixes to the dhclient, which sought to run the
910
dhclient-script with the 'EXPIRE' state should it receive a NAK in
911
response to a REQUEST. The client now iterates the PREINIT state
912
after the EXPIRE state, so that interfaces that might be configured
913
'down' can be brought back 'up' and initialized.
914
915
- DHCPINFORM handling for clients that properly set ciaddr and come to the
916
server via a relay aget has been repaired.
917
918
Changes since 3.0.4
919
920
- A warning that host statements declared within subnet or shared-network
921
scopes are actually global has been added.
922
923
- The default minimum lease time (if min-lease-time was not specified)
924
was raised from 0 to 300. 0 is not thought to be sensible, and is
925
known to be damaging.
926
927
- Added additional fatal error sanity checks surrounding lease binding
928
state count calculations (free/active counts used for failover pool
929
balancing).
930
931
- Some time value size fixes in 3.0.4 brought on from FreeBSD /usr/ports were
932
misapplied to server values rather than client values. The server no longer
933
advertises 8-byte lease-time options when on 64-bit platforms.
934
935
- A bug where leases not in ACTIVE state would get billed to billed classes
936
(classes with lease limitations) was fixed. Non-active leases OFFERed
937
to clients are no longer billed (but billing is checked before offering).
938
939
- The dhcpd.conf.5 manpage was updated in regard to the ddns-domainname
940
configuration option - the default configuration and results should be
941
more clear now.
942
943
- If the dhclient were to receive a DHCPNAK while it was in the RENEW
944
state (and consequently, had an active, 'bound' address and related
945
configuration options), it would fail to 'tear down' this information
946
before proceeding into INIT state. dhclient now iterates the dhclient-
947
script with the 'EXPIRE' action to cause these teardowns prior to entering
948
INIT state. Thanks to a patch from Chris Zimmerman.
949
950
- The omapi.1 manpage had some formatting errors repaired thanks to a patch
951
from Yoshihiko Sarumaru.
952
953
- A few lines of code that were failover-specific were moved within
954
#if defined() clauses so that compilation without failover could be
955
made possible.
956
957
- The log message emitted when the 'leased-address' value was not available
958
in dhcpd.conf "executable statements" has been updated to be more helpful.
959
Manpage information for this value has also been updated.
960
961
- Abandoned or dissociated (err condition) leases now remove any related
962
dynamic dns bindings. Thanks to a patch from Patrick Schoo.
963
964
- Attempting to write a new lease file to replace a corrupt (due to
965
encountering non-retryable errors during writing) lease file should
966
no longer result in an infinite recursion.
967
968
- Host declaration hardware addresses and client identifiers may only be
969
configured once. dhcpd will now fail to load config files that specify
970
multiple identifiers (previous versions would silently over-ride the
971
value with the later configured value).
972
973
- Several option codes that have been allocated since our last release
974
have been named and documented.
975
976
- Option names of the form "unknown-123" have been removed from the in-
977
memory hash tables. In order to support options of these names that
978
may appear in dhclient.leases or similar in previous versions, the
979
parser will now find the new option code definition, or mock up a
980
generic option code definition. This should result in a smooth
981
transition from one name to the other, as the new name is used to
982
write new output.
983
984
Changes since 3.0.4rc1
985
986
- The dhcp-options.5 manpage was updated to correct indentation errors
987
thanks to a patch from Jean Delvare.
988
989
Changes since 3.0.4b3
990
991
- Some manual pages were clarified pursuant to discussion on the dhcp-server
992
mailing list.
993
994
Changes since 3.0.4b2
995
996
- Null-termination sensing for certain clients that unfortunately require
997
it in DHCPINFORM processing was repaired.
998
999
- The host-name option and a few others were moved from "X" format to "t"
1000
format to be compatible with new NULL handling functions.
1001
1002
- DHCPINFORM processing is a little more careful about return addressing
1003
its responses, or if responding via a relay. The INFORM related
1004
messages also log the 'effective client ip address' rather than the
1005
client's supplied ciaddr (since some clients produce null ciaddrs).
1006
1007
- The server was inappropriately sending leases to the RESET state in the
1008
event that multiple active leases were found to match a singly-identified
1009
client. This was changed to RELEASED (by accepting a different, ACTIVE
1010
binding, the client is implicitly releasing its lease). This repairs a
1011
bug wherein secondary servers in failover pairs detecting this condition
1012
move leases to RESET, and primaries refuse to accept that state
1013
transition (properly).
1014
1015
- The memset-after-dmalloc() changes made in 3.0.4b1 have been backed out.
1016
1017
Changes since 3.0.4b1
1018
1019
- Command line parsing in omshell was repaired - it no longer closes
1020
STDIN after reading one line.
1021
1022
- The resolver library no longer closes the /etc/resolv.conf file
1023
descriptor it opened twice.
1024
1025
- Changes to trailing NULL removal in 't' option-atoms has been rethought,
1026
it now includes 'd' (domain name) types, and tries hard not to rewind an
1027
option beyond the start of the text field it is un-terminating.
1028
1029
Changes since 3.0.3
1030
1031
- A DDNS update handling function was misusing the DNS error codes, rather
1032
than the internal generic result enumeration. The result is a confusing
1033
syslog line, logging the wrong condition.
1034
1035
- The DHCP Server was not checking pool balance in the case where it brought
1036
a non-ACTIVE lease out of storage for a client that was returning to use
1037
a lease it once had long ago, and had since expired.
1038
1039
- Failover peers no longer bother to look for free leases to allocate when
1040
they already found the client's ACTIVE lease. DISCOVERs are load balanced
1041
whether freely-allocated or not, unless the server doubts the peer has
1042
leases to allocate.
1043
1044
- Fixed a bug in dhcrelay agent addition code that suppressed trailing
1045
PAD options - it was suppressing only one trailing PAD option, rather
1046
than the entire block of them.
1047
1048
! Fixed some unlikely overlapping-region memcpy() bugs in dhcrelay agent
1049
option addition and stripping code. Added a few sanity checks. Although
1050
highly improbable, due to requiring the reception of a DHCP datagram well
1051
in excess of all known to be used physical MTU limitations, it is possible
1052
this may have been used in a stack overflow security vulnerability. Thanks
1053
to a patch from infamous42md.
1054
1055
! Added some sanity checks to OMAPI connection/authentication code.
1056
Although highly improbable, due to having to deliver in excess of 2^32
1057
bytes of data via the OMAPI channel, not to mention requiring dhcpd to
1058
be able to malloc() a memory region 2^32 bytes in size, it was possible
1059
this might have resulted in a heap overflow security vulnerability.
1060
Thanks to a patch from infamous42md.
1061
1062
- dmalloc() memset()'s the non-debug (data) portion of the allocated
1063
memory to zero. Code that memset()'s the result returned by dmalloc() to
1064
zero is redundant. These redundancies were removed.
1065
1066
- Some type declaration corrections to u_int16_t were made in common/tr.c
1067
(Token Ring support) thanks to a patch from Jason Vas Dias at RedHat.
1068
1069
- A failover bug that was allowing leases that EXPIRED or were RELEASED
1070
where tsfp and tstp are identical timestamps to languish in these
1071
transitional states has been repaired. As a side effect, lease
1072
databases should be kept more consistent overall, not just for these
1073
transitional states.
1074
1075
- If the lease db is deleted out from under the daemon, and it moves to rewrite
1076
the db, it will go ahead with the operation and move the new db into place
1077
once it detects the old db does not exist.
1078
1079
- dhclient now ignores IRDA, SIT, and IEEE1394 network interfaces, as it
1080
is either nonsensical or (in the case of IEEE1394) is not known to support
1081
these interfaces. Thanks to Marius Gedminas and Andrew Pollock of Debian.
1082
1083
- Some previously undocumented reasons for dhclient-script invoking has
1084
been documented in the dhclient-script.8 manpage.
1085
1086
- Failover potential expiry calculations (TSTP) have been corrected. Results
1087
should be substantially more consistent, and proper given the constraints.
1088
1089
- Adjusted lease state validation checks in potential-conflict, to
1090
account for possible clock skew similarly to normal state, and several
1091
previously illegal transitions were made legal (ex: active->released).
1092
1093
- An impossible sanity check was removed from omapi/buffer.c, thanks to a
1094
patch from 'infamous42md'.
1095
1096
- An OMAPI host/network byte order problem in lease time values has been
1097
repaired.
1098
1099
- Several minor bugs, largely relating to treating 8-byte time values as
1100
4-byte entities, have been repaired after careful review of the FreeBSD
1101
ports collection's patch set. Thanks to the nameless entities who have
1102
contributed to the FreeBSD ports.
1103
1104
- When writing a trace file, the file is now created with permissions 0600,
1105
to help administrators avoid accidentally publicising sensitive config
1106
data.
1107
1108
- The calculation of the maximum size of DHCP packets no longer includes
1109
Ethernet framing overhead. The result is that the 'Maximum Message
1110
Size' option advertised by clients, or the default value 576, is no
1111
longer reduced by 14 bytes, and instead directly reflects the IP level
1112
MTU (and the default, minimum allowed IP MTU of 576).
1113
1114
- The special status of RELEASED/EXPIRED/RESET leases when a server
1115
is operating in partner-down was fixed. It no longer requires a
1116
lease be twice the MCLT beyond STOS to 'reallocate', and the expiry
1117
event to turn these into FREE leases without peer acknowledgement
1118
(after STOS+MCLT) has been repaired.
1119
1120
- Compilation on older Solaris systems (lacking /usr/include/sys/int_types.h)
1121
has been repaired.
1122
1123
- "append"ing a string onto the end of a "t" type option (such as the
1124
domain-name field) that had been improperly NULL-terminated by the
1125
DHCP server will no longer result in a truncated string containing
1126
only the option from the server, and not the expected appended value.
1127
Thanks to a patch from Jason Vas Dias at RedHat.
1128
1129
- File handlers on configuration state (config files and lease dbs) should
1130
be treated consistently, regardless of whether TRACING is defined or not.
1131
1132
- The Linux build environment has had some minor improvements - better
1133
sensing of 64-bit pointer sizes (only used for establishing an icmp_id),
1134
and corrections to #if operators regarding LINUX_MAJOR should it ever
1135
move to 3.[01].x.
1136
1137
- The server now tries harder to survive the condition where it is unable
1138
to open a new lease file to rewrite the lease state database.
1139
1140
Changes since 3.0.3b3
1141
1142
- dhclient.conf documentation for interface {} was updated to reflect recent
1143
discussion on the dhcp-hackers mailing list.
1144
1145
- In response to reports that the software does not compile on GCC 4.0.0,
1146
-Werror was removed from Makefile.conf for all platforms that used it.
1147
We will address the true problem in a future release; this is a temporary
1148
workaround.
1149
1150
Changes since 3.0.3b2
1151
1152
- An error in code changes introduced in 3.0.3b2 was corrected, which caused
1153
static BOOTP clients to receive random addresses.
1154
1155
Changes since 3.0.3b1
1156
1157
- A bug was fixed in BOOTPREQUEST handling code wherein stale references to
1158
host records would be left behind on leases that were not allocated to the
1159
client currently booting (eg in the case where the host was denied booting).
1160
1161
- The dhcpd.conf.5 manpage was updated to be more clear in regards to
1162
multiple host declarations (thanks to Vincent McIntyre). 'Interim' style
1163
dynamic updates were also retouched.
1164
1165
Changes since 3.0.2
1166
1167
- A bug was fixed where a server might load balance a DHCP REQUEST to its
1168
peer after already choosing not to load balance the preceding DISCOVER.
1169
The peer cannot allocate the originating server's lease.
1170
1171
- In the case where a secondary server lost its stable storage while the
1172
primary was still in communications-interrupted, and came back online,
1173
the lease databases would not be fully transferred to the secondary.
1174
This was due to the secondary errantly sending an extra UPDREQ message
1175
when the primary made its state transition to PARTNER-DOWN known.
1176
1177
- The package will now compile cleanly in gcc 3.3 and 3.4. As a side effect,
1178
lease structures will be 9 bytes smaller on all platforms. Thanks to
1179
Jason Vas Dias at Redhat.
1180
1181
- Interface discovery code in DISCOVER_UNCONFIGURED mode is now
1182
properly restricted to only detecting broadcast interfaces. Thanks
1183
to a patch from Jason Vas Dias at RedHat.
1184
1185
- decode_udp_ip_header was changed so that the IP address was copied out
1186
to a variable, rather than referenced by a pointer. This enforces 4-byte
1187
alignment of the 32-bit IP address value. Thanks to a patch from Dr.
1188
Peter Poeml.
1189
1190
- An incorrect log message was corrected thanks to a patch from
1191
Dr. Peter Poeml.
1192
1193
- A bug in DDNS was repaired, where if the server's first DDNS action was
1194
a DDNS removal rather than a DDNS update, the resolver library's
1195
retransmit timer and retry timer was set to the default, implying a
1196
15 second timeout interval. Which is a little excessive in a synchronous,
1197
single-threaded system. In all cases, ISC DHCP should now hold fast to
1198
a 1-second timeout, trying only once.
1199
1200
- The siaddr field was being improperly set to the server-identifier when
1201
responding to DHCP messages. RFC2131 clarified the siaddr field as
1202
meaning the 'next server in the bootstrap process', eg a tftp server.
1203
The siaddr field is now left zeroed unless next-server is configured.
1204
1205
- mockup_lease() could have returned in an error condition (or in the
1206
condition where no fixed-address was found matching the shared
1207
network) with stale references to a host record. This is probably not
1208
a memory leak since host records generally never die anyway.
1209
1210
- A bug was repaired where failover servers would let stale client identifiers
1211
persist on leases that were reallocated to new clients not sending an id.
1212
1213
- Binding scopes ("set var = value;") are now removed from leases allocated
1214
by failover peers if the lease had expired. This should help reduce the
1215
number of stale binding scopes on leases.
1216
1217
- A small memory leak was closed involving client identifiers larger than
1218
7 bytes, and failover.
1219
1220
- Configuring a subnet in dhcpd.conf with a subnet mask of 32 bits might
1221
cause an internal function to overflow heap. Thanks to Jason Vas Dias
1222
at Redhat.
1223
1224
- Some inconsistencies in treating numbers that the lexer parsed as 'NUMBER'
1225
or 'NUMBER_OR_NAME' was repaired. Hexadecimal parsing is affected, and
1226
should work better.
1227
1228
- In several cases, parse warnings were being issued before the lexical
1229
token had been advanced to the token whose value was causing an error...
1230
causing parse warnings to claim the problem is on the wrong token.
1231
1232
- Host declarations matching on client identifier for dynamic leases will
1233
no longer match fixed-address host declarations (this is now identical
1234
to behaviour for host records matching on hardware address).
1235
1236
Changes since 3.0.2rc3
1237
1238
- A previously undocumented configuration directive, 'local-address',
1239
was documented in the dhcpd.conf manpage.
1240
1241
Changes since 3.0.2rc2
1242
1243
- Two variables introduced in 3.0.2b1 were used without being initialized
1244
in the case where neither the FILE nor SNAME fields were available for
1245
overloading. This was repaired.
1246
1247
- A heretofore believed to be impossible corner case of the option
1248
overloading implementation turned out to be possible ("Unable to sort
1249
overloaded options after 10 tries."). The implementation was reworked
1250
to consider the case of an option so large it would require more than
1251
three chunks to fit.
1252
1253
- Many other instances of variables being used without being initialized
1254
were repaired.
1255
1256
- An uninitialized variable in omapi_io_destroy() led to the discovery
1257
that this function may result in orphaned pointers (and hence, a memory
1258
leak).
1259
1260
Changes since 3.0.2rc1
1261
1262
- allocate_lease() was rewritten to repair a bug in which the server would
1263
try to allocate an ABANDONED lease when FREE leases were available.
1264
1265
Changes since 3.0.2b1
1266
1267
- Some dhcp-eval.5 manpage formatting was repaired.
1268
1269
Changes since 3.0.1
1270
1271
- A bug was fixed in the server's 'option overloading' implementation,
1272
where options loaded into the 'file' and 'sname' packet fields were
1273
not aligned precisely as rfc2131 dictates.
1274
1275
- The FreeBSD client script was changed to support the case where a domain
1276
name was not provided by the server.
1277
1278
- A memory leak in 'omshell' per each command line parsed was
1279
repaired, thanks to a patch from Jarkko Torppa.
1280
1281
- Log functions writing to stderr were adjusted to use the STDERR_FILENO
1282
system definition rather than '2'. This is a no-op for 90% of platforms.
1283
1284
- One call to trace_write_packet_iov() counted the number of io vectors
1285
incorrectly, causing inconsistent tracefiles. This was fixed.
1286
1287
- Some expression parse failure memory leaks were closed.
1288
1289
- A host byte order problem in tracefiles was repaired.
1290
1291
- Pools configured in DHCPD for failover possessing permission lists that
1292
previously were assumed to not include dyanmic bootp clients are now
1293
a little more pessimistic. The result is, dhcpd will nag you about just
1294
about most pools that possess a 'allow' statement with no 'deny' that
1295
would definitely match a dynamic bootp client.
1296
1297
- The 'ddns-update-style' configuration warning bit now insists that
1298
the configuration be globally scoped.
1299
1300
- Two memory leaks in dhclient were closed thanks to a patch from Felix
1301
Farkas.
1302
1303
- Some minor but excellently pedantic documentation errors were fixed
1304
thanks to a patch from Thomas Klausner.
1305
1306
- Bugs in operator precedence in executable statements have been repaired
1307
once again. More legal syntaxes should be parsed legally.
1308
1309
- Failing to initialize a tracefile for any reason if a tracefile was
1310
specified is now a fatal error. Thanks to a patch from Albert Herranz.
1311
1312
- Corrected a bug in which the number of leases transferred as calculated
1313
by the failover primary and sent to peers in POOLRESP responses may be
1314
incorrect. This value is not believed to be used by other failover
1315
implementations, excepting perhaps as logged information.
1316
1317
- Corrected a bug in which 'dhcp_failover_send_poolresp()' was in fact
1318
sending POOLREQ messages instead of POOLRESP mesasges. This message
1319
was essentially ignored since failover secondaries effectively do not
1320
respond to POOLREQ messages.
1321
1322
- Type definitions for various bitwidths of integers in the sunos5-5
1323
build of ISC DHCP have been fixed. It should compile and run more
1324
easily when built in 64-bit for this platform.
1325
1326
- "allow known-clients;" is now a legal syntax, to avoid confusion.
1327
1328
- If one dhcp server chooses to 'load balance' a request to its failover
1329
peer, it first checks to see if it believes said peer has a free
1330
lease to allocate before ignoring the DISCOVER.
1331
1332
- log() was logging a work buffer, rather than the value returned by
1333
executing the statements configured by the user. In some cases,
1334
the work buffer and the intended results were the same. In some other
1335
cases, they were not. This was fixed thanks to a patch from Gunnar
1336
Fjone and directconnect.no.
1337
1338
- Compiler warnings for some string type conversions was fixed, thanks
1339
to Andreas Gustafsson.
1340
1341
- The netbsd build environments were simplified to one, in which
1342
-Wconversion is not used, thanks to Andreas Gustafsson.
1343
1344
- How randomness in the backoff-cutoff dhclient configuration variable
1345
is implemented was better documented in the manpage, and the behaviour
1346
of dhclient in REQUEST timeout handling was changed to match that of
1347
DISCOVER timeout handling.
1348
1349
- Omapi was hardened against clients that pass in null values, thanks
1350
to a patch from Mark Jason Dominus.
1351
1352
- A bug was fixed in dhclient that kept it from doing client-side
1353
ddns updates. Thanks to a patch from Andreas Gustafsson, which
1354
underwent some modification after review by Jason Vas Dias.
1355
1356
- Failover implementations disconnected due to the network between
1357
them (rather than one of the two shutting down) will now try to
1358
re-establish the failover connection every 5 seconds, rather than
1359
to simply try once and give up until one of them is restarted.
1360
Thanks to a patch from Ulf Ekberg from Infoblox, and field testing
1361
by Greger V. Teigre which led to an enhancement to it.
1362
1363
- A problem that kept DHCP Failover secondaries from tearing down
1364
ddns records was repaired. Thanks to a patch from Ulf Ekberg from
1365
Infoblox.
1366
1367
- 64bit pointer sizes are detected properly on FreeBSD now.
1368
1369
- A bug was repaired where the DHCP server would leave stale references
1370
to host records on leases it once thought about offering to certain
1371
clients. The result would be to apply host and 'known' scopes to the
1372
wrong clients (possibly denying booting). NOTE: The 'mis-host' patch
1373
that was being circulated as a workaround is not the way this bug was
1374
fixed. If you were a victim of this bug in 3.0.1, you are cautioned
1375
to proceed carefully and see if it fixes your problem.
1376
1377
- A bug was repaired in the server's DHCPINFORM handling, where it
1378
tried to divine the client's address from the source packet and
1379
would get it wrong. Thanks to Anshuman Singh Rawat.
1380
1381
- A log message was introduced to help illuminate the case where the
1382
server was unable to find a lease to assign to any BOOTP client.
1383
Thanks to Daniel Baker.
1384
1385
- A minor dhcpd.conf.5 manpage error was fixed.
1386
1387
Changes since 3.0.1rc14
1388
1389
- The global variable 'cur_time' was centralized and is now uniformly of a
1390
type #defined in system-dependent headers. It had previously been defined
1391
in one of many places as a 32-bit value, and this causes mayhem on 64-bit
1392
big endian systems. It probably wasn't too healthy on little endian
1393
systems either.
1394
1395
- A printf format string error introduced in rc14 was repaired.
1396
1397
- AIX system-dependent header file was altered to only define NO_SNPRINTF
1398
if the condition used to #ifdef in vsnprintf in AIX' header files
1399
is false.
1400
1401
- The Alpha/OSF system-dependent header file was altered to define
1402
NO_SNPRINTF on OS revisions older than 4.0G.
1403
1404
- omapip/test.c had string.h added to its includes.
1405
1406
Changes since 3.0.1rc13
1407
1408
! CAN-2004-0460 - CERT VU#317350: Five stack overflow exploits were closed
1409
in logging messages with excessively long hostnames provided by the
1410
clients. It is highly probable that these could have been used by
1411
attackers to gain arbitrary root access on systems using ISC DHCP 3.0.1
1412
release candidates 12 or 13. Special thanks to Gregory Duchemin for
1413
both finding and solving the problem.
1414
1415
! CAN-2004-0461 - CERT VU#654390: Once the above was closed, an opening
1416
in log_*() functions was evidenced, on some specific platforms where
1417
vsnprintf() was not believed to be available and calls were wrapped to
1418
sprintf() instead. Again, credit goes to Gregory Duchemin for finding
1419
the problem. Calls to snprintf() are now linked to a distribution-local
1420
snprintf implementation, only in those cases where the architecture is
1421
not known to provide one (see includes/cf/[arch].h). If you experience
1422
linking problems with snprintf/vsnprintf or 'isc_print_' functions, this
1423
is where to look. This vulnerability did not exist in any previously
1424
published version of ISC DHCP.
1425
1426
- Compilation on hpux 11.11 was repaired.
1427
1428
- 'The cross-compile bug fix' was backed out.
1429
1430
Changes since 3.0.1rc12
1431
1432
- Fixed a bug in omapi lease lookup function, to form the hardware
1433
address for the hash lookup correctly, thanks to a patch from
1434
Richard Hirst.
1435
1436
- Fixed a bug where dhcrelay was sending relayed responses back to the
1437
broadcast address, but with the source's unicast mac address. Should
1438
now conform to rfc2131 section 4.1.
1439
1440
- Cross-compile bug fix; use $(AR) instead of ar. Thanks to Morten Brorup.
1441
1442
- Fixed a crash bug in dhclient where dhcpd servers that do not provide
1443
renewal times results in an FPE. As a side effect, dhclient can now
1444
properly handle 0xFFFFFFFF (-1) expiry times supplied by servers. Thanks
1445
to a patch from Burt Silverman.
1446
1447
- The 'ping timeout' debugs from rc12 were removed to -DDEBUG only,
1448
and reformatted to correct a compilation error on Solaris platforms.
1449
1450
- A patch was applied which fixes a case where leases read from the
1451
leases database do not properly over-ride previously read leases.
1452
1453
- dhcpctl.3 manpage was tweaked.
1454
1455
Changes since 3.0.1rc11
1456
1457
- A patch from Steve Campbell was applied with minor modifications to
1458
permit reverse dns PTR record updates with values containing spaces.
1459
1460
- A patch from Florian Lohoff was applied with some modifications to
1461
dhcrelay. It now discards packets whose hop count exceeds 10 by default,
1462
and a command-line option (-c) can be used to set this threshold.
1463
1464
- A failover bug relating to identifying peers by name length instead of
1465
by name was fixed.
1466
1467
- Declaring failover configs within shared-network statements should no
1468
longer result in error.
1469
1470
- The -nw command line option to dhclient now works.
1471
1472
- Thanks to a patch from Michael Richardson:
1473
- Some problems with long option processing have been fixed.
1474
- Some fixes to minires so that updates of KEY records will work.
1475
1476
- contrib/ms2isc was updated by Shu-Min Chang of the Intel Corporation.
1477
see contrib/ms2isc/readme.txt for revision notes.
1478
1479
- Dhclient no longer uses shell commands to kill another instance of
1480
itself, it sends the signal directly. Thanks to a patch from Martin
1481
Blapp.
1482
1483
- The FreeBSD dhclient-script was changed so that a failure to write to
1484
/etc/resolv.conf does not prematurely end the script. This keeps dhclient
1485
from looping infinitely when this is the case. Thanks to a patch from
1486
Martin Blapp.
1487
1488
- A patch from Bill Stephens was applied which resolves a problem with lease
1489
expiry times in failover configurations.
1490
1491
- A memory leak in configuration parsing was closed thanks to a patch from
1492
Steve G.
1493
1494
- The function which discovers interfaces will now skip non-broadcast or
1495
point-to-point interfaces, thanks to a patch from David Brownlee.
1496
1497
- Options not yet known by the dhcpd or dhclient have had their names
1498
changed such that they do not contain # symbols, in case they should ever
1499
appear in a lease file. An option that might have been named "#144" is
1500
now "unknown-144".
1501
1502
- Another patch from Bill Stephens which allows the ping-check timeout to
1503
be configured as 'ping-timeout'. Defaults to 1.
1504
1505
Changes since 3.0.1rc10
1506
1507
- Potential buffer overflows in minires repaired.
1508
1509
- A change to the linux client script to use /bin/bash, since /bin/sh may
1510
not be bash.
1511
1512
- Some missing va_end cleanups thanks to a patch from Thomas Klausner.
1513
1514
- A correction of boolean parsing syntax validation - some illegal syntaxes
1515
that worked before are now detected and produce errs, some legal syntaxes
1516
that errored before will now work properly.
1517
1518
- Some search-and-replace errors that caused some options to change their
1519
names was repaired.
1520
1521
- Shu-min Chang of the Intel corporation has contributed a perl script and
1522
module that converts the MS NT4 DHCP configuration to a ISC DHCP3
1523
configuration file.
1524
1525
- Applied the remainder of the dhcpctl memory leak patch provided by Bill
1526
Squier at ReefEdge, Inc. (groo@reefedge.com).
1527
1528
- Missing non-optional failover peer configurations will now result in a soft
1529
error rather than a null dereference.
1530
1531
Changes since 3.0.1rc9
1532
1533
- A format string was corrected to fix compiler warnings.
1534
1535
- A number of spelling corrections were made in the man pages.
1536
1537
- The dhclient.conf.5 man page was changed to refer to do-forward-updates
1538
rather than a configuration option that doesn't exist.
1539
1540
- A FreeBSD-specific bug in the interface removal handling was fixed.
1541
1542
- A Linux-specific Token Ring detection problem was fixed.
1543
1544
- Hashes removed from as-yet-unknown agent options, having those options
1545
appear in reality before we know about them will no longer produce
1546
self-corrupting lease databases.
1547
1548
- dhclient will use the proper port numbers now when using the -g option.
1549
1550
- A order-of-operations bug with 2 match clauses in 1 class statement is
1551
fixed thanks to a patch from Andrew Matheson.
1552
1553
- Compilation problems on Solaris were fixed.
1554
1555
- Compilation problems when built with DEBUG or DEBUG_PACKET were repaired.
1556
1557
- A fix to the dhcp ack process which makes certain group options will be
1558
included in the first DHCPOFFER message was made thanks to a patch from
1559
Ling Gou.
1560
1561
- A few memory leaks were repaired thanks to patches from Bill Squier at
1562
ReefEdge, Inc. (groo@reefedge.com).
1563
1564
- A fix for shared-networks that sometimes give clients options for the
1565
wrong subnets (in particular, 'option routers') was applied, thanks to
1566
Ted Lemon for the patch.
1567
1568
- Omshell's handling of dotted octets as values was changed such that dots
1569
one after the other produce zero values in the integer string.
1570
1571
Changes since 3.0.1rc8
1572
1573
- Fix a format string vulnerability in the server that could lead to a
1574
remote root compromise (discovered by NGSEC Research Team, www.ngsec.com).
1575
1576
- Add additional support for NetBSD/sparc64.
1577
1578
- Fix a bug in the command-line parsing of the client. Also, resolve
1579
a memory leak.
1580
1581
- Add better support for shells other than bash in the Linux client
1582
script.
1583
1584
- Various build fixes for modern versions of FreeBSD and Linux.
1585
1586
- Fix a bad bounds check when printing binding state names.
1587
1588
- Clarify documentation about fixed-address and multiple addresses.
1589
1590
- Fix a typo in the authoritative error message.
1591
1592
- Make a log entry when we can't write a billing class.
1593
1594
- Use conversion targets that are the right size on all architectures.
1595
1596
- Increment the hop count when relaying.
1597
1598
- Log a message when lease state is changed through OMAPI.
1599
1600
- Don't rerun the shared_network when evaluating the pool.
1601
1602
- Fix a reversed test in the parser.
1603
1604
- Change the type of rbuf_max.
1605
1606
- Make FTS_LAST a manifest constant to quiet warnings.
1607
1608
Changes since 3.0.1rc7
1609
1610
- Fix two compiler warnings that are generated when compiling on Solaris
1611
with gcc. These stop the build, even though they weren't actually
1612
errors, because we prefer that our builds generate no warnings.
1613
1614
Changes since 3.0.1rc6
1615
1616
- Don't allow a lease that's in the EXPIRED, RELEASED or RESET state
1617
to be renewed.
1618
1619
- Implement lease stealing for cases where the primary has fewer leases
1620
than the secondary, as called for by the standard.
1621
1622
- Add a fudge factor to the lease expiry acceptance code, (suggested
1623
by Kevin Miller of CMU).
1624
1625
- Fix a bug in permit_list_match that made it much too willing to say
1626
that two permit lists matched.
1627
1628
- Unless DEBUG_DNS_UPDATES is defined, print more user-friendly (and
1629
also more compact) messages about DNS updates.
1630
1631
- Fix a bug in generating wire-format domain names for the FQDN option.
1632
1633
- Fix a bug where the FQDN option would not be returned if the client
1634
requested it, contrary to the standard.
1635
1636
- On Darwin, use the FreeBSD DHCP client script.
1637
1638
- On NetBSD/sparc, don't check for casting warnings.
1639
1640
- Add a flag in the DHCP client to disable updating the client's A
1641
record when sending an FQDN option indicating that the client is
1642
going to update its A record.
1643
1644
- In the client, don't attempt a DNS update until one second after
1645
configuring the new IP address, and if the update times out, keep
1646
trying until a response, positive or negative, is received from the
1647
DNS server.
1648
1649
- Fix an uninitialized memory bug in the DHCP client.
1650
1651
- Apply some FreeBSD-specific bug fixes suggested by Murray Stokely.
1652
1653
- Fix a bug in ns_parserr(), where it was returning the wrong sort
1654
of result code in some cases (suggested by Ben Harris of the
1655
NetBSD project).
1656
1657
- Fix a bug in is_identifier(), where it was checking against EOF
1658
instead of the END_OF_FILE token (also suggested by Ben Harris).
1659
1660
- Fix a bug where if an option universe contained no options, the
1661
DHCP server could dump core (Walter Steiner).
1662
1663
- Fix a bug in the handling of encapsulated options.
1664
1665
- Fix a bug that prevented NWIP suboptions from being processed.
1666
1667
- Delete the FTS_BOOTP and FTS_RESERVED states and implement them
1668
as modifier flags to the FTS_ACTIVE state, as called for in the
1669
failover protocol standard.
1670
1671
- Fix bugs in the pool merging code that resulted in references and
1672
dereferences of null pointers. This bug had no impact unless the
1673
POINTER_DEBUG flag was defined.
1674
1675
- In the server, added a do-forward-updates flag that can be used to
1676
disable forward updates in all cases, so that sites that want the
1677
clients to take sole responsibility for updating their A record can
1678
do so.
1679
1680
- Make it possible to disable optimization of PTR record updates.
1681
1682
Changes since 3.0.1rc5
1683
1684
- Include some new documentation and changes provided by Karl Auer.
1685
1686
- Add a workaround for some Lexmark printers that send a double-NUL-
1687
terminated host-name option, which would break DNS updates.
1688
1689
- Fix an off-by-one error in the MAC-address checking code for
1690
DHCPRELEASE that was added in 3.0.1rc5.
1691
1692
- Fix a bug where client-specific information was not being discarded
1693
from the lease when it expired or was released, resulting in
1694
problems if the lease was reallocated to a different client.
1695
1696
- If more than one allocation pool is specified that has the same set
1697
of constraints as another allocation pool on the same shared
1698
network, merge the two pools.
1699
1700
- Don't print an error in fallback_discard, since this just causes
1701
confusion and does not appear to be helping to encourage anyone to
1702
fix this bug.
1703
1704
Changes since 3.0.1rc4
1705
1706
- Fix a bug that would cause the DHCP server to spin if asked to parse
1707
a certain kind of incorrect statement.
1708
1709
- Fix a related bug that would prevent an error from being reported in
1710
the same case.
1711
1712
- Additional documentation.
1713
1714
- Make sure that the hardware address matches the lease when
1715
processing a DHCPRELEASE message.
1716
1717
Changes since 3.0.1rc3
1718
1719
- A minor bug fix in the arguments to a logging function call.
1720
- Documentation update for dhcpd.conf.
1721
1722
Changes since 3.0.1rc2
1723
1724
- Allow the primary to send a POOLREQ message. This isn't what the current
1725
failover draft says to do, so we may have to back it out if I can't get the
1726
authors to relent, but the scheme for balancing that's specified in the
1727
current draft seems needlessly hairy, so I'm floating a trial balloon.
1728
The rc1 code did not implement the method described in the draft either.
1729
1730
Changes since 3.0.1rc1
1731
1732
- Treat NXDOMAIN and NXRRSET as success when we are trying to delete a
1733
domain or RRSET. This allows the DHCP server to forget about a name
1734
it added to the DNS once it's been removed, even if the DHCP server
1735
wasn't the one that removed it.
1736
1737
- Install defaults for failover maximum outstanding updates and maximum
1738
silent time. This prevents problems that might occur if these values
1739
were not configured.
1740
1741
- Don't do DDNS deletes if ddns-update-style is none.
1742
1743
- Return relay agent information options in DHCPNAK. This prevents DHCPNAK
1744
messages from being dropped when the relay agent information option contains
1745
routing information.
1746
1747
- Fix a problem where coming up in recover wouldn't result in an update
1748
request being sent.
1749
1750
- Add some more chatty messages when we start a recovery update and when it's
1751
done.
1752
1753
- Fix a possible problem where some state might have been left around
1754
after the peer lost contact and regained contact about how many updates
1755
were pending.
1756
1757
- Don't nix a lease update because of a lease conflict. This test has
1758
never (as far as I know) prevented a mistake, and it appears to cause
1759
problems with failover.
1760
1761
- Add support in rc history code for keeping a selective history, rather
1762
than a history of all references and dereferences. This code is only used
1763
when extensive additional debugging is enabled.
1764
1765
Changes since 3.0
1766
1767
- Make allocators for hash tables. As a side effect, this fixes a memory
1768
smash in the subclass allocation code.
1769
1770
- Fix a small bug in omshell where if you try to close an object when
1771
no object is open, it dumps core.
1772
1773
- Fix an obscure coredump that could occur on shutdown.
1774
1775
- Fix a bug in the recording of host declaration rubouts in the lease file.
1776
1777
- Fix two potential spins in the host deletion code.
1778
1779
- Fix a core dump that would happen if an application tried to update
1780
a host object attribute with a null value.
1781
1782
Changes since 3.0 Release Candidate 12
1783
1784
- Fix a memory leak in the evaluation code.
1785
1786
- Fix an obscure core dump.
1787
1788
- Print a couple of new warnings when parsing the configuration file
1789
when crucial information is left out.
1790
1791
- Log "no free leases" as an error.
1792
1793
- Documentation updates.
1794
1795
Changes since 3.0 Release Candidate 11
1796
1797
- Always return a subnet selection option if one is sent.
1798
1799
- Fix a warning that was being printed because an automatic data
1800
structure wasn't zeroed.
1801
1802
- Fix some failover state transitions that were being handled
1803
incorrectly.
1804
1805
- When supersede_lease is called on a lease whose end time has already
1806
expired, but for which a state transition has not yet been done, do
1807
a state transition. This fixes the case where if the secondary
1808
allocated a lease to a client and the lease "expired" while the
1809
secondary was in partner-down, no expiry event would actually
1810
happen, so the lease would remain active until the primary was
1811
restarted.
1812
1813
Changes since 3.0 Release Candidate 10
1814
1815
- Fix a bug that was preventing released leases from changing state
1816
in failover-enabled pools.
1817
1818
- Fix a core dump in the client identifier finder code (for host
1819
declarations).
1820
1821
- Finish fixing a bug where bogus data would sometimes get logged to
1822
the dhclient.leases file because it was opened as descriptor 2.
1823
1824
- Fix the Linux dhclient-script according to suggestions made by
1825
several people on the dhcp-client mailing list.
1826
1827
- Log successful DNS updates at LOG_INFO, not LOG_ERROR.
1828
1829
- Print an error message and refuse to run if a failover peer is
1830
defined but not referenced by any pools.
1831
1832
- Correct a confusing error message in failover.
1833
1834
Changes since 3.0 Release Candidate 9
1835
1836
- Fix a bug in lease allocation for Dynamic BOOTP clients.
1837
1838
Changes since 3.0 Release Candidate 8 Patchlevel 2
1839
1840
- Fix a bug that prevented update-static-leases from working.
1841
1842
- Document failover-state OMAPI object.
1843
1844
- Fix a compilation error on SunOS 4.
1845
1846
Changes since 3.0 Release Candidate 8 Patchlevel 1
1847
1848
- Fix a parsing bug that broke dns updates (both interim and ad-hoc).
1849
This was introduced in rc8pl1 as an unintended result of the memory
1850
leakage fixes that were in pl1.
1851
1852
- Fix a long-standing bug where the server would record that an update
1853
had been done for a client with no name, even though no update had
1854
been done, and then when the client's lease expired the deletion of
1855
that nonexistant record would time out because the name was the null
1856
string.
1857
1858
- Clean up the omshell, dhcpctl and omapi man pages a bit.
1859
1860
Changes since 3.0 Release Candidate 8
1861
1862
- Fix a bug that could cause the DHCP server to spin if
1863
one-lease-per-client was enabled.
1864
1865
- Fix a bug that was causing core dumps on BSD/os in the presence of
1866
malformed packets.
1867
1868
- In partner-down state, don't restrict lease lengths to MCLT.
1869
1870
- On the failover secondary, record the MCLT received from the primary
1871
so that if we come up without a connection to the primary we don't
1872
wind up giving out zero-length leases.
1873
1874
- Fix some compilation problems on BSD/os.
1875
1876
- Fix a bunch of memory leaks.
1877
1878
- Fix a couple of bugs in the option printer.
1879
1880
- Fix an obscure error reporting bug in the dns update code, and also
1881
make the message clearer when a key algorithm isn't supported.
1882
1883
- Fix a bug in the tracing code that prevented trace runs that used
1884
tcp connections from being played back.
1885
1886
- Add some additional debugging capability for catching memory leaks
1887
on exit.
1888
1889
- Make the client release the lease correctly on shutdown.
1890
1891
- Add some configurability to the build system.
1892
1893
- Install omshell manual page in man1, not man8.
1894
1895
- Craig Gwydir sent in a patch that fixes a long-standing bug in the
1896
DHCP client that could cause core dumps, but that for some reason
1897
hadn't been noticed until now.
1898
1899
Changes since 3.0 Release Candidate 7
1900
1901
- Fix a bug in failover where we weren't sending updates after a
1902
transition from communications-interrupted to normal.
1903
1904
- Handle expired/released/reset -> free transition according to the
1905
protocol specification (this works - the other way not only wasn't
1906
conformant, but also didn't work).
1907
1908
- Add a control object in both client and server that allows either
1909
daemon to be shut down cleanly.
1910
1911
- When writing a lease, if we run out of disk space, shut down the
1912
output file and insist on writing a new one before proceeding.
1913
1914
- In the server, if the OMAPI listener port is occupied, keep trying
1915
to get it, rather than simply giving up and exiting.
1916
1917
- Support fetching variables from leases and also updating and adding
1918
variables to leases via OMAPI.
1919
1920
- If two failover peers have wildly different clocks, refuse to start
1921
doing failover.
1922
1923
- Fix a bug in the DNS update code that could cause core dumps when
1924
running on alpha processors.
1925
1926
- Fixed a bug in ddns updates for static lease entries, thanks to a
1927
patch from Andrey M Linkevitch.
1928
1929
- Add support for Darwin/MacOS X
1930
1931
- Install omshell (including new documentation).
1932
1933
- Support DNS updates in the client (this is a very obscure feature
1934
that most DHCP client users probably will not be able to use).
1935
1936
- Somewhat cleaner status logging in the client.
1937
1938
- Make OMAPI key naming syntax compatible with the way keys are
1939
actually named (key names are domain names).
1940
1941
- Fix a bug in the lease file writer.
1942
1943
- Install DHCP ISC headers in a different place than BIND 9 ISC
1944
headers, to avoid causing trouble in BIND 9 builds.
1945
1946
- Don't send updates for attributes on an object when the attributes
1947
haven't changed. Support deleting attributes on remote objects.
1948
1949
- Fix a number of bugs in omshell, and add the unset and refresh
1950
statements.
1951
1952
- Handle disconnects in OMAPI a little bit more intelligently (so that
1953
the caller gets ECONNRESET instead of EINVAL).
1954
1955
- Fix a bunch of bugs in the handling of clients that have existing
1956
leases when the try to renew their leases while failover is
1957
operating.
1958
1959
Changes since 3.0 Release Candidate 6
1960
1961
- Fix a core dump that could happen when processing a DHCPREQUEST from
1962
a client that had a host declaration that contained both a
1963
fixed-address declaration and a dhcp-client-identifier option
1964
declaration, if the client identifier was longer than nine bytes.
1965
1966
- Fix a memory leak that could happen in certain obscure cases when
1967
using omapi to manipulate leases.
1968
1969
- Fix some bugs and omissions in omshell.
1970
1971
1972
Changes since 3.0 Release Candidate 5
1973
1974
- Fix a bug in omapi_object_dereference that prevented objects in
1975
chains from having their reference counts decreased on dereference.
1976
1977
- Fix a bug in omapi_object_dereference that would prevent object
1978
chains from being freed upon removal of the last reference external
1979
to the chain.
1980
1981
- Fix a number of other memory leaks in the OMAPI protocol subsystem.
1982
1983
- Add code in the OMAPI protocol handler to trace memory leakage.
1984
1985
- Clean up the memory allocation/reference history printer.
1986
1987
- Support input of dotted quads and colon-separated hex lists as
1988
attribute values in omshell.
1989
1990
- Fix a typo in the Linux interface discovery code.
1991
1992
- Conditionalize a piece of trace code that wasn't conditional.
1993
1994
Changes since 3.0 Release Candidate 4
1995
1996
- Fix a bug that would prevent leases from being abandoned properly on
1997
DHCPDECLINE.
1998
1999
- Fix failover peer OMAPI support.
2000
2001
- In failover, correctly handle expiration of leases. Previously,
2002
leases would never be reclaimed because they couldn't make the
2003
transition from EXPIRED to FREE.
2004
2005
- Fix some broken failover state transitions.
2006
2007
- Documentation fixes.
2008
2009
- Take out an unnecessary check in DHCP relay agent information option
2010
stashing code that was preventing REBINDING clients from rebinding.
2011
2012
- Prevent failover peers from allocating leases in DHCPREQUEST
2013
processing if the lease belongs to the other server.
2014
2015
- Record server version in lease file introductory comment.
2016
2017
- Correctly report connection errors in OMAPI and failover.
2018
2019
- Make authentication signature algorithm name comparisons in OMAPI
2020
case-insensitive.
2021
2022
- Fix compile problem on SunOS 4.x
2023
2024
- If a signature algorithm is not terminated with '.', terminate it so
2025
that comparisons between fully-qualified names will work
2026
consistently.
2027
2028
- Different SIOCGIFCONF probe code, may "fix" problem on some Linux
2029
systems with the probe not working correctly.
2030
2031
- Don't allow user to type omapi key on command line of omshell.
2032
2033
Changes since 3.0 Release Candidate 3
2034
2035
- Do lease billing on startup in a way that I *think* will finally do
2036
the billing correctly - the previous method could overbill as a
2037
result of duplicate leases.
2038
2039
- Document OMAPI server objects.
2040
2041
Changes since 3.0 Release Candidate 2 Patchlevel 1
2042
2043
- Fix some problems in the DDNS update code. Thanks to Albert
2044
Herranz for figuring out the main problem.
2045
2046
- Fix some reference counting errors on host entries that were causing
2047
core dumps.
2048
2049
- Fix a byte-swap bug in the token ring code, thanks to Jochen
2050
Friedrich.
2051
2052
- Fix a bug in lease billing, thanks to Jonas Bulow.
2053
2054
Changes since 3.0 Release Candidate 2
2055
2056
- Change the conditions under which a DHCPRELEASE is actually
2057
committed to be consistent with lease binding states rather than
2058
using the lease end time. This may fix some problems with the
2059
billing class code.
2060
2061
- Fix a bug where lease updates would fail on Digital Unix (and maybe
2062
others) because malloc was called with a size of zero.
2063
2064
- Fix a core dump that happens when the DHCP server can't create its
2065
trace file.
2066
2067
Changes since 3.0 Release Candidate 1 Patchlevel 1
2068
2069
- Fix the dhcp_failover_put_message to not attempt to allocate a
2070
zero-length buffer. Some versions of malloc() fail if you try to
2071
allocate a zero-length buffer, and this was causing problems on,
2072
e.g., Digital Unix.
2073
2074
- Fix a case where the failover code was printing an error message
2075
when no error had occurred.
2076
2077
- Fix a problem where when a server went down and back up again, the
2078
peer would not see a state transition and so would stay in the
2079
non-communicating state.
2080
2081
- Be smart about going into recover_wait.
2082
2083
- Fix a problem in the failover implementation where peers would fail
2084
to come into sync if interrupted in the RECOVER state. This could
2085
have been the cause of some problems people have reported recently.
2086
2087
- Fix a problem with billing classes where they would not be unbilled
2088
when the client lease expired.
2089
2090
- If select fails, figure out which descriptor is bad, and cut it out
2091
of the I/O loop. This prevents a potentially nasty spin. I
2092
haven't heard any report it in a while, but it came up consistently
2093
in testing.
2094
2095
- Fix a bug in the relay agent where if you specified interfaces on
2096
the command line, it would fail.
2097
2098
- Fix a couple of small bugs in the omapi connection object (no known
2099
user impact).
2100
2101
- Add the missing 3.0 Beta 1 lease conversion script.
2102
2103
- Read dhcp client script hooks if they exist, rather than only if
2104
they're executable.
2105
2106
Changes since 3.0 Release Candidate 1
2107
2108
- Fix a memory smash that happens when fixed-address leases are used.
2109
ANY SITE AT WHICH FIXED-ADDRESS STATEMENTS ARE BEING USED SHOULD
2110
UPGRADE IMMEDIATELY. This has been a long-standing bug - thanks to
2111
Alvise Nobile for discovering it and helping me to find it!
2112
2113
- Fix a small bug in binary-to-ascii, thanks to H. Peter Anvin of
2114
Transmeta.
2115
2116
- There is a known problem with the DHCP server doing failover on
2117
Compaq Alpha systems. This patchlevel is not a release candidate
2118
because of this bug. The bug should be straightforward to fix, so
2119
a new release candidate is expected shortly.
2120
2121
- There is a known problem in the DDNS update code that is probably a
2122
bug, and is not, as far as we know, fixed in this patchlevel.
2123
2124
Changes since 3.0 Beta 2 Patchlevel 24
2125
2126
- Went over problematic failover state transitions and made them all
2127
work, so that failover should now much less fragile.
2128
2129
- Add some dhcpctl and omapi documentation
2130
2131
- Fix compile errors when compiling with unusual predefines.
2132
2133
- Make Token Ring work on Linux 2.4
2134
2135
- Fix the Digital Unix BPF_WORDALIGN bug.
2136
2137
- Fix some dhcp client documentation errors.
2138
2139
- Update some parts of the README file.
2140
2141
- Support GCC on SCO.
2142
2143
Changes since 3.0 Beta 2 Patchlevel 23
2144
2145
- Fix a bug in the DNS update code where a status code was not being
2146
checked. This may have been causing core dumps.
2147
2148
- When parsing the lease file, if a lease declaration includes a
2149
billing class statement, and the lease already has a billing class,
2150
unbill the old class.
2151
2152
- When processing failover transactions, where acks will be deferred,
2153
process the state transition immediately.
2154
2155
- Don't try to use the new SIOCGIFCONF buffer size detection code on
2156
Linux 2.0, which doesn't provide this functionality.
2157
2158
- Apply a patch suggested by Tuan Uong for a problem in dlpi.c.
2159
2160
- Fix a problem in using the which command in the configure script.
2161
2162
- Fix a parse error in the client when setting up an omapi listener.
2163
2164
- Document the -n and -g flags to the client.
2165
2166
- Make sure there is always a stdin and stdout on startup. This
2167
prevents shell scripts from accidentally writing error messages into
2168
configuration files that happen to be opened as stderr.
2169
2170
- If an interface is removed, the client will now notice that it is
2171
gone rather than spinning. This has only been tested on NetBSD.
2172
2173
- The client will attempt to get an address even if it can't create a
2174
lease file.
2175
2176
- Don't overwrite tracefiles.
2177
2178
- Fix some memory allocation bugs in failover.
2179
2180
Changes since 3.0 Beta 2 Patchlevel 22
2181
2182
- Apply some patches suggested by Cyrille Lefevre, who is maintaining
2183
the FreeBSD ISC DHCP Distribution port.
2184
2185
- Fix a core dump in DHCPRELEASE.
2186
2187
Changes since 3.0 Beta 2 Patchlevel 21
2188
2189
- This time for sure: fix the spin described in the changes for pl20.
2190
2191
Changes since 3.0 Beta 2 Patchlevel 20
2192
2193
- Fix a problem with Linux detecting large numbers of interfaces (Ben)
2194
2195
- Fix a memory smash in the quotify code, which was introduced in
2196
pl19.
2197
2198
- Actually fix the spin described in the changes for pl20. The
2199
previous fix only partially fixed the problem - enough to get it
2200
past the regression test.
2201
2202
Changes since 3.0 Beta 2 Patchlevel 19
2203
2204
- Fix a bug that could cause the server to abort if compiled with
2205
POINTER_DEBUG enabled.
2206
2207
- Fix a bug that could cause the server to spin when responding to a
2208
DHCPREQUEST.
2209
2210
- Apply Joost Mulders' suggested patches for DLPI on x86.
2211
2212
- Support NUL characters in quoted strings.
2213
2214
- Install unformatted man pages on SunOS.
2215
2216
Changes since 3.0 Beta 2 Patchlevel 18
2217
2218
- Allow the server to be placed in partner-down state using OMAPI.
2219
(Damien Neil)
2220
2221
- Implement omshell, which can be used to do arbitrary things to the
2222
server (in theory). (Damien Neil)
2223
2224
- Fix a case where if a client had two different leases the server could
2225
actually dereference the second one when it hadn't been referenced,
2226
leading to memory corruption and a core dump. (James Brister)
2227
2228
- Fix a case where a client could request the address of another client's
2229
lease, but find_lease wouldn't detect that the other client had it, and
2230
would attempt to allocate it to the client, resulting in a lease conflict
2231
message.
2232
2233
- Fix a case where a client with more than one client identifier could be
2234
given a lease where the hardware address was correct but the client
2235
identifier was not, resulting in a lease conflict message.
2236
2237
- Fix a problem where the server could write out a colon-separated
2238
hex list as a value for a variable, which would then not parse.
2239
The fix is to always write strings as quoted strings, with any
2240
non-printable characters quoted as octal escape sequences. So
2241
a file written the old way still won't work, but new files written
2242
this way will work.
2243
2244
- Fix documentation for sending non-standard options.
2245
2246
- Use unparsable names for unknown options. WARNING: this will
2247
break any configuration files that use the option-nnn convention.
2248
If you want to continue to use this convention for some options,
2249
please be sure to write a definition, like this:
2250
2251
option option-nnn code nnn = string;
2252
2253
You can use a descriptive name instead of option-nnn if you like.
2254
2255
- Fix a problem where we would see a DHCPDISCOVER/DHCPOFFER/
2256
DHCPREQUEST/DHCPACK/DHCPREQUEST/DHCPNAK sequence. This was the
2257
result of a deceptively silly bug in supersede_lease.
2258
2259
- Fix client script exit status check, according to a fix supplied by
2260
Hermann Lauer.
2261
2262
- Fix an endianness bug in the tracefile support, regarding ICMP
2263
messages.
2264
2265
- Fix a bug in the client where the medium would not work correctly if
2266
it contained quoted strings.
2267
2268
** there was no pl17 **
2269
2270
Changes since 3.0 Beta 2 Patchlevel 16
2271
2272
- Add support for transaction tracing. This allows the state of the
2273
DHCP server on startup, and all the subsequent transactions, to be
2274
recorded in a file which can then be played back to reproduce the
2275
behaviour of the DHCP server. This can be used to quickly
2276
reproduce bugs that cause core dumps or corruption, and also for
2277
tracking down memory leaks.
2278
2279
- Incorporate some bug fixes provided by Joost Mulders for the DLPI
2280
package which should clear up problems people have been seeing on
2281
Solaris.
2282
2283
- Fix bugs in the handling of options stored as linked lists (agent
2284
options, fqdn options and nwip options) that could cause memory
2285
corruption and core dumps.
2286
2287
- Fix a bug in DHCPREQUEST handling that resulted in DHCPNAK messages
2288
not being send in some cases when they were needed.
2289
2290
- Make the lease structure somewhat more compact.
2291
2292
- Make initial failover startup *much* faster. This was researched
2293
and implemented by Damien Neil.
2294
2295
- Add a --version flag to all executables, which prints the program
2296
name and version to standard output.
2297
2298
- Don't rewrite the lease file every thousand leases.
2299
2300
- A bug in nit.c for older SunOS machines was fixed by a patch sent in
2301
by Takeshi Hagiwara.
2302
2303
- Fix a memory corruption bug in the DHCP client.
2304
2305
- Lots of documentation updates.
2306
2307
- Add a feature allowing environment variables to be passed to the
2308
DHCP client script on the DHCP client command line.
2309
2310
- Fix client medium support, which had been broken for some time.
2311
2312
- Fix a bug in the DHCP client initial startup backoff interval, which
2313
would cause two DHCPDISCOVERS to be sent back-to-back on startup.
2314
2315
2316
Changes since 3.0 Beta 2 Patchlevel 15
2317
2318
- Some documentation tweaks.
2319
2320
- Maybe fix a problem in the DLPI code.
2321
2322
- Fix some error code space inconsistencies in ddns update code.
2323
2324
- Support relay agents that intercept unicast DHCP messages to stuff
2325
agent options into them.
2326
2327
- Fix a small memory leak in the relay agent option support code.
2328
2329
- Fix a core dump that would occur if a packet was sent with no
2330
options.
2331
2332
Changes since 3.0 Beta 2 Patchlevel 14
2333
2334
- Finish fixing a long-standing bug in the agent options code. This
2335
was causing core dumps and failing to operate correctly - in
2336
particular, agent option stashing wasn't working. Agent option
2337
stashing should now be working, meaning that agent options can be
2338
used in class statements to control address allocation.
2339
2340
- Fix up documentation.
2341
2342
- Fix a couple of small memory leaks that would have added up
2343
significantly in a high-demand situation.
2344
2345
- Add a log-facility configuration parameter.
2346
2347
- Fix a compile error on some older operating systems.
2348
2349
- Add the ability in the client to execute certain statements before
2350
transmitting packets to the server. Handy for debugging; not much
2351
practical use otherwise.
2352
2353
- Don't send faked-out giaddr when renewing or bound - again, useful
2354
for debugging.
2355
2356
Changes since 3.0 Beta 2 Patchlevel 13
2357
2358
- Fixed a problem where the fqdn decoder would sometimes try to store
2359
an option with an (unsigned) negative length, resulting in a core
2360
dump on some systems.
2361
2362
- Work around the Win98 DHCP client, which NUL-terminates the FQDN
2363
option.
2364
2365
- Work around Win98 and Win2k clients that will claim they want to do
2366
the update even when they don't have any way to do it.
2367
2368
- Fix some log messages that can be printed when failover is operating
2369
that were not printing enough information.
2370
2371
- It was possible for a DHCPDISCOVER to get an allocation even when
2372
the state machine said the server shouldn't be responding.
2373
2374
- Don't load balance DHCPREQUESTs from clients in RENEWING and
2375
REBINDING, since in RENEWING, if we heard it, it's for us, and in
2376
REBINDING, the client wouldn't have got to REBINDING if its primary
2377
were answering.
2378
2379
- When we get a bogus state lease binding state transition, don't do
2380
the transition.
2381
2382
2383
Changes since 3.0 Beta 2 Patchlevel 12
2384
2385
- Fixed a couple of silly compile errors.
2386
2387
Changes since 3.0 Beta 2 Patchlevel 11
2388
2389
- Albert Herranz tracked down and fixed a subtle bug in the base64
2390
decoder that would prevent any key with an 'x' in its base64
2391
representation from working correctly.
2392
2393
- Thanks to Chris Cheney and Michael Sanders, we have a fix for the
2394
hang that they both spotted in the DHCP server - when
2395
one-lease-per-client was set, the code to release the "other" lease
2396
could spin.
2397
2398
- Fix a problem with alignment of the input buffer in bpf in cases
2399
where two packets arrive in the same bpf read.
2400
2401
- Fix a problem where the relay agent would crash if you specified an
2402
interface name on the command line.
2403
2404
- Add the ability to conditionalize client behaviour based on the
2405
client state.
2406
2407
- Add support for the FQDN option, and added support for a new way of
2408
doing ddns updates (ddns update style interim) that allows more than
2409
one DHCP server to update the DNS for the same network(s). This
2410
was implemented by Damien Neil with some additional functionality
2411
added by Ted Lemon.
2412
2413
- Damien added a "log" statement, so that the configuration file can
2414
be made to log debugging information and other information.
2415
2416
- Fixed a bug that caused option buffers not to be terminated with an
2417
end option.
2418
2419
- Fixed a long-standing bug in the support for option spaces where the
2420
options are stored as an ordered list rather than in a hash table,
2421
which could theoretically result in memory pool corruption.
2422
2423
- Prevent hardware declarations with no actual hardware address from
2424
being written as something unparsable, and behave correctly in the
2425
face of a null hardware address on input.
2426
2427
- Allow key names to be FQDNs, and qualify the algorithm name if it is
2428
specified unqualified.
2429
2430
- Modify the DDNS update code so that it never prints the "resolver
2431
failed" message, but instead says *why* the resolver failed.
2432
2433
- Officially support the subnet selection option, which now has an
2434
RFC.
2435
2436
- Fix a build bug on MacOS X.
2437
2438
- Allow administrator to disable ping checking.
2439
2440
- Clean up dhcpd.conf documentation and add more information about how
2441
it works.
2442
2443
Changes since 3.0 Beta 2 Patchlevel 10
2444
2445
- Fix a bug introduced during debugging (!) and accidentally committed
2446
to CVS.
2447
2448
Changes since 3.0 Beta 2 Patchlevel 9
2449
2450
- Fix DHCP client handling of vendor encapsulated options.
2451
2452
- Fix a bug in the handling of relay agent information options introduced
2453
in patchlevel 9.
2454
2455
- Stash agent options on client leases by default, and use the stashed
2456
options at renewal time.
2457
2458
- Add the ability to test the client's binding state in the client
2459
configuration language.
2460
2461
- Fix a core dump in the DNS update code.
2462
2463
- Fix some expression evaluation bugs that were causing updates to be
2464
done when no client hostname was received.
2465
2466
- Fix expression evaluation debugging printfs.
2467
2468
- Teach pretty_print_option to print options in option spaces other than
2469
the DHCP option space.
2470
2471
- Add a warning message if the RHS of a not is not boolean.
2472
2473
- Never select for more than a day, because some implementations of
2474
select will just fail if the timeout is too long (!).
2475
2476
- Fix a case where a DHCPDISCOVER from an unknown network would be
2477
silently dropped.
2478
2479
- Fix a bug where if a client requested an IP address for which a different
2480
client had the lease, the DHCP server would reallocate it anyway.
2481
2482
- Fix the DNS update code so that if the client changes its name, the DNS
2483
will be correctly updated.
2484
2485
Changes since 3.0 Beta 2 Patchlevel 8
2486
2487
- Oops, there was another subtle math error in the header-length
2488
bounds-checking.
2489
2490
Changes since 3.0 Beta 2 Patchlevel 7
2491
2492
- Oops, forgot to byte-swap udp header length before bounds-checking it.
2493
2494
Changes since 3.0 Beta 2 Patchlevel 6
2495
2496
- Fix a possible DoS attack where a client could cause the checksummer
2497
to dump core. This was a read, not a write, so it shouldn't be
2498
possible to exploit it any further than that.
2499
2500
- Implement client- and server-side support for using the Client FQDN
2501
option.
2502
2503
- Support for other option spaces in the client has been added. This
2504
means that it is now possible to define a vendor option space on the
2505
client, request options in that space from the server (which must
2506
define the same option space), and then use those options in the
2507
client. This also allows NWIP and Client FQDN options to be used
2508
meaningfully.
2509
2510
- Add object initializer support. This means that objects can now be
2511
initialized to something other than all-zeros when allocated, which
2512
makes, e.g., the interface object support code a little more robust.
2513
2514
- Fix an off-by-one bug in the host stuffer. This was causing host
2515
deletes not the work, and may also have been causing OMAPI
2516
connections to get dropped. Thanks to James Brister for tracking
2517
this one down!
2518
2519
- Fixed a core dump in the interface discovery code that is triggered
2520
when there is no subnet declaration for an interface, but the server
2521
decides to continue running. Thanks to Shane Kerr for tracking
2522
down and fixing this problem.
2523
2524
Changes since 3.0 Beta 2 Patchlevel 5
2525
2526
- Fix a bug in the recent enhancement to the interface discovery code
2527
to support arbitrary-length interface lists.
2528
2529
- Support NUL-terminated DHCP options when initializing client-script
2530
environment.
2531
2532
- Fix suffix operator.
2533
2534
- Fix NetWare/IP option parsing.
2535
2536
- Better error/status checking in dhcpctl initialization and omapi
2537
connection code.
2538
2539
- Fix a potential memory smash in dhcpctl code.
2540
2541
- Fix SunOS4 and (maybe) Ultrix builds.
2542
2543
- Fix a bug where a certain sort of incoming packet could cause a core
2544
dump on Solaris (and probably elsewhere).
2545
2546
- Add some more safety checks in error logging code.
2547
2548
- Add support for ISC_R_INCOMPLETE in OMAPI protocol connection code.
2549
2550
- Fix relay agent so that if an interface is specified on the command
2551
line, the relay agent does not dump core.
2552
2553
- Fix class matching so that match if can be combined with match or
2554
spawn with.
2555
2556
- Do not allow spurious leases in the lease database to introduce
2557
potentially bogus leases into the in-memory database.
2558
2559
- Fix a byte-order problem in the client hardware address type code
2560
for OMAPI.
2561
2562
- Be slightly less picky about what sort of hardware addresses OMAPI
2563
can install in host declarations.
2564
2565
Changes since 3.0 Beta 2 Patchlevel 4
2566
2567
- Incorporated Peter Marschall's proposed change to array/record
2568
parsing, which allows things like the slp-agent option to be encoded
2569
correctly. Thanks very much to Peter for taking the initiative to
2570
do this, and for doing such a careful job of it (e.g., updating the
2571
comments)!
2572
2573
- Added an encoding for the slp-agent option. :')
2574
2575
- Fixed SunOS 4 build. Thanks to Robert Elz for responding to my
2576
request for help on this with patches!
2577
2578
- Incorporated a change that should fix a problem reported by Philippe
2579
Jumelle where when the network connection between two servers is
2580
lost, they never reconnect.
2581
2582
- Fix client script files other than that for NetBSD to actually use
2583
make_resolv_conf as documented in the manual page.
2584
2585
- Fix a bug in the packet handling code that could result in a core
2586
dump.
2587
2588
- Fix a bug in the bootp code where responses on the local net would
2589
be sent to the wrong MAC address. Thanks to Jerry Schave for
2590
catching this one.
2591
2592
Changes since 3.0 Beta 2 Patchlevel 3
2593
2594
- In the DHCP client, execute client statements prior to using the values
2595
of options, so that the client configuration can overridden, e.g., the
2596
lease renewal time.
2597
2598
- Fix a reference counting error that would result in very reproducible
2599
failures in updates, as well as occasional core dumps, if a zone was
2600
declared without a key.
2601
2602
- Fix some Linux 2.0 compilation problems.
2603
2604
- Fix a bug in scope evaluation during execution of "on" statements that
2605
caused values not to be recorded on leases.
2606
2607
- If the dhcp-max-message-size option is specified in scope, and the
2608
client didn't send this option, use the one specified in scope to
2609
determine the maximum size of the response.
2610
2611
Changes since 3.0 Beta 2 Patchlevel 2
2612
2613
- Fix a case where spawning subclasses were being allocated
2614
incorrectly, resulting in a core dump.
2615
2616
- Fix a case where the DHCP server might inappropriately NAK a
2617
RENEWING client.
2618
2619
- Fix a place dhcprequest() where static leases could leak.
2620
2621
- Include memory.h in omapip_p.h so that we don't get warnings about
2622
using memcmp().
2623
2624
Changes since 3.0 Beta 2 Patchlevel 1
2625
2626
- Notice when SIOCFIGCONF returns more data than fit in the buffer -
2627
allocate a larger buffer, and retry. Thanks to Greg Fausak for
2628
pointing this out.
2629
2630
- In the server, if no interfaces were configured, report an error and
2631
exit.
2632
2633
- Don't ever record a state of 'startup'.
2634
2635
- Don't try to evaluate the local failover binding address if none was
2636
specified. Thanks to Joseph Breu for finding this.
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