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