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1 | Internet Systems Consortium DHCP Distribution | |
2 | Version 3.1 - HEAD | |
3 | March 3, 2005 | |
4 | ||
5 | Release Notes | |
6 | ||
7 | NEW FEATURES | |
8 | ||
9 | XXX: Note need for care of ATSFP values when upgrading from 3.0.4+ to | |
10 | 3.1.x. | |
11 | ||
12 | Version 3 of the ISC DHCP Distribution includes the following features | |
13 | that are new since version 2.0: | |
14 | ||
15 | - DHCP Failover Protocol support | |
16 | - OMAPI, an API for accessing and modifying the DHCP server and | |
17 | client state. | |
18 | - Conditional behaviour | |
19 | - Storing arbitrary information on leases | |
20 | - Address pools with access control | |
21 | - Client classing | |
22 | - Address allocation restriction by class | |
23 | - Relay agent information option support | |
24 | - Dynamic DNS updates | |
25 | - Many bug fixes, performance enhancements, and minor new DHCP | |
26 | protocol features. | |
27 | ||
28 | The main bug fixed here is a bug in the subclass allocation code that | |
29 | could result in a memory smash. Any users of the ISC DHCP server who | |
30 | are using subclasses should seriously consider upgrading to 3.0.1. | |
31 | ||
32 | If you are running 3.0 beta 1 and are doing dynamic DNS updates, the | |
33 | lease file is no longer forward-compatible to 3.0 final. A script | |
34 | has been provided to convert 3.0b1 lease files. This is in | |
35 | contrib/3.0b1-lease-convert. | |
36 | ||
37 | For information on how to install, configure and run this software, | |
38 | as well as how to find documentation and report bugs, please consult | |
39 | the README file. | |
40 | ||
41 | The Dynamic DNS Update support is a descendent of an implementation | |
42 | done by Lans Carstensen and Brian Dols at Rose-Hulman Institute of | |
43 | Technology, Jim Watt at Applied Biosystems, Irina Goble at Integrated | |
44 | Measurement Systems, Igor Sharfmesser at Kazakh Telecom, and Brian | |
45 | Murrell at BC Tel Advanced Communications. I'd like to express my | |
46 | thanks to all of these good people here, both for working on the code | |
47 | and for prodding me into improving it. | |
48 | ||
49 | ||
50 | Changes since 3.0 (New Features) | |
51 | ||
52 | - A workaround for certain STSN servers that send a mangled domain-name | |
53 | option was introduced for dhclient. The client will now accept corrupted | |
54 | server responses, if they contain a valid DHCP_MESSAGE_TYPE (OFFER, ACK, | |
55 | or NAK). The server will continue to not accept corrupt client packets. | |
56 | ||
57 | - Support for 'reserved' (psuedo-static) and BOOTP leases via failover | |
58 | was introduced. | |
59 | ||
60 | - Support for adding, removing, and managing class and subclass statements | |
61 | via OMAPI. | |
62 | ||
63 | - The failover implementation was updated to comply with revision 12 of | |
64 | the protocol draft. | |
65 | ||
66 | - 'make install' now creates the initial zero-length dhcpd.leases file if | |
67 | one does not already exist on the system. | |
68 | ||
69 | - RFC3942 compliance, site-local option spaces start at 224 now, not 128. | |
70 | ||| THIS NEEDS TO BE SPELLED OUT IN THE NEW FEATURES LIST ||| | |
71 | ||
72 | - The IO system now tracks all local IP addresses, so that the DHCP | |
73 | applications (particularly the dhcrelay) can discern between what frames | |
74 | were tranmsitted to it, and what frames are being carried through it which | |
75 | it should not intercept. | |
76 | ||
77 | - The Load Balance Algorithm was misimplemented. The current implementation | |
78 | matches RFC 3074. | |
79 | ||
80 | - lcase() and ucase() configuration expressions have been added which adjust | |
81 | their arguments from upper to lower and lower to upper cases respectively. | |
82 | Thanks to a patch from Albert Herranz. | |
83 | ||
84 | - The dhclient 'reject ...;' statement, which rejects leases given by named | |
85 | server-identifiers, now permits address ranges to be specified in CIDR | |
86 | notation. Thanks to a patch from David Boyce. | |
87 | ||
88 | - The subnet-mask option is now supplied by default, but at lowest | |
89 | priority. This helps a small minority of clients that provide parameter | |
90 | request lists, but do not list the subnet-mask option because they were | |
91 | designed to interoperate with a server that behaves in this manner. | |
92 | ||
93 | - The FQDN option is similarly supplied even if it does not appear on the | |
94 | parameter request list, but not to the exclusion of options that do | |
95 | appear at the parameter request list. Up until now it had ultimate | |
96 | priority over the client's parameter request list. | |
97 | ||
98 | - Varying option space code and length bit widths (8/16/32) are now | |
99 | supported. This is a milestone in acheiving RFC 3925 "VIVSO" and | |
100 | DHCPv6 support. | |
101 | ||
102 | - A new common (server or client) option, 'db-time-format local;', has | |
103 | been added which prints the local time in /var/db/dhcpd.leases rather | |
104 | than UTC. Thanks to a patch from Ken Lalonde. | |
105 | ||
106 | - Some patches to improve DHCP Server startup speed from Andrew Matheson | |
107 | have been incorporated. | |
108 | ||
109 | - Failover pairs now implement 'MAC Affinity' on leases moving from the | |
110 | active to free states. Leases that belonged to the failover secondary | |
111 | are moved to BACKUP state rather than FREE upon exiting EXPIRED state. | |
112 | If lease rebalancing must move leases, it tries first to move leases | |
113 | that belong to the peer in need. | |
114 | ||
115 | - The server no longer sends POOLREQ messages unless the pool is severely | |
116 | misbalanced in the peer's favor (see 'man dhcpd.conf' for more details). | |
117 | ||
118 | - Pool rebalance events no longer happen upon successfully allocating a | |
119 | lease. Instead, they happen on a schedule. See 'man dhcpd.conf' for the | |
120 | min-balance and max-balance statements for more information. | |
121 | ||
122 | - The DHCP Relay Agent Information Option / Link Selection Sub-Option | |
123 | is now supported. (See RFC3527 for details). | |
124 | ||
125 | Changes since 3.0.4 | |
126 | ||
127 | - A warning that host statements declared within subnet or shared-network | |
128 | scopes are actually global has been added. | |
129 | ||
130 | - The default minimum lease time (if min-lease-time was not specified) | |
131 | was raised from 0 to 300. 0 is not thought to be sensible, and is | |
132 | known to be damaging. | |
133 | ||
134 | - Added additional fatal error sanity checks surrounding lease binding | |
135 | state count calculations (free/active counts used for failover pool | |
136 | balancing). | |
137 | ||
138 | - Some time value size fixes in 3.0.4 brought on from FreeBSD /usr/ports were | |
139 | misapplied to server values rather than client values. The server no longer | |
140 | advertises 8-byte lease-time options when on 64-bit platforms. | |
141 | ||
142 | - A bug where leases not in ACTIVE state would get billed to billed classes | |
143 | (classes with lease limitations) was fixed. Non-active leases OFFERed | |
144 | to clients are no longer billed (but billing is checked before offering). | |
145 | ||
146 | - The dhcpd.conf.5 manpage was updated in regard to the ddns-domainname | |
147 | configuration option - the default configuration and results should be | |
148 | more clear now. | |
149 | ||
150 | - If the dhclient were to receive a DHCPNAK while it was in the RENEW | |
151 | state (and consequently, had an active, 'bound' address and related | |
152 | configuration options), it would fail to 'tear down' this information | |
153 | before proceeding into INIT state. dhclient now iterates the dhclient- | |
154 | script with the 'EXPIRE' action to cause these teardowns prior to entering | |
155 | INIT state. Thanks to a patch from Chris Zimmerman. | |
156 | ||
157 | - The omapi.1 manpage had some formatting errors repaired thanks to a patch | |
158 | from Yoshihiko Sarumaru. | |
159 | ||
160 | - A few lines of code that were failover-specific were moved within | |
161 | #if defined() clauses so that compilation without failover could be | |
162 | made possible. | |
163 | ||
164 | - The log message emitted when the 'leased-address' value was not available | |
165 | in dhcpd.conf "executable statements" has been updated to be more helpful. | |
166 | Manpage information for this value has also been updated. | |
167 | ||
168 | Changes since 3.0.4rc1 | |
169 | ||
170 | - The dhcp-options.5 manpage was updated to correct indentation errors | |
171 | thanks to a patch from Jean Delvare. | |
172 | ||
173 | Changes since 3.0.4b3 | |
174 | ||
175 | - Some manual pages were clarified pursuant to discussion on the dhcp-server | |
176 | mailing list. | |
177 | ||
178 | Changes since 3.0.4b2 | |
179 | ||
180 | - Null-termination sensing for certain clients that unfortunatley require | |
181 | it in DHCPINFORM processing was repaired. | |
182 | ||
183 | - The host-name option and a few others were moved from "X" format to "t" | |
184 | format to be compatible with new NULL handling functions. | |
185 | ||
186 | - DHCPINFORM processing is a little more careful about return addressing | |
187 | its responses, or if responding via a relay. The INFORM related | |
188 | messages also log the 'effective client ip address' rather than the | |
189 | client's supplied ciaddr (since some clients produce null ciaddrs). | |
190 | ||
191 | - The server was inappropriately sending leases to the RESET state in the | |
192 | event that multiple active leases were found to match a singly-identified | |
193 | client. This was changed to RELEASED (by accepting a different, ACTIVE | |
194 | binding, the client is implicitly releasing its lease). This repairs a | |
195 | bug wherein secondary servers in failover pairs detecting this condition | |
196 | move leases to RESET, and primaries refuse to accept that state | |
197 | transition (properly). | |
198 | ||
199 | - The memset-after-dmalloc() changes made in 3.0.4b1 have been backed out. | |
200 | ||
201 | Changes since 3.0.4b1 | |
202 | ||
203 | - Command line parsing in omshell was repaired - it no longer closes | |
204 | STDIN after reading one line. | |
205 | ||
206 | - The resolver library no longer closes the /etc/resolv.conf file | |
207 | descriptor it opened twice. | |
208 | ||
209 | - Changes to trailing NULL removal in 't' option-atoms has been rethought, | |
210 | it now includes 'd' (domain name) types, and tries hard not to rewind an | |
211 | option beyond the start of the text field it is un-terminating. | |
212 | ||
213 | Changes since 3.0.3 | |
214 | ||
215 | - A DDNS update handling function was misusing the DNS error codes, rather | |
216 | than the internal generic result enumeration. The result is a confusing | |
217 | syslog line, logging the wrong condition. | |
218 | ||
219 | - The DHCP Server was not checking pool balance in the case where it brought | |
220 | a non-ACTIVE lease out of storage for a client that was returning to use | |
221 | a lease it once had long ago, and had since expired. | |
222 | ||
223 | - Failover peers no longer bother to look for free leases to allocate when | |
224 | they already found the client's ACTIVE lease. DISCOVERs are load balanced | |
225 | wether freely-allocated or not, unless the server doubts the peer has | |
226 | leases to allocate. | |
227 | ||
228 | - Fixed a bug in dhcrelay agent addition code that suppressed trailing | |
229 | PAD options - it was suppressing only one trailng PAD option, rather | |
230 | than the entire block of them. | |
231 | ||
232 | ! Fixed some unlikely overlapping-region memcpy() bugs in dhcrelay agent | |
233 | option addition and stripping code. Added a few sanity checks. Although | |
234 | highly improbable, due to requiring the reception of a DHCP datagram well | |
235 | in excess of all known to be used physical MTU limitations, it is possible | |
236 | this may have been used in a stack overflow security vulnerability. Thanks | |
237 | to a patch from infamous42md. | |
238 | ||
239 | ! Added some sanity checks to OMAPI connection/authentication code. | |
240 | Although highly improbable, due to having to deliver in excess of 2^32 | |
241 | bytes of data via the OMAPI channel, not to mention requiring dhcpd to | |
242 | be able to malloc() a memory region 2^32 bytes in size, it was possible | |
243 | this might have resulted in a heap overflow security vulnerability. | |
244 | Thanks to a patch from infamous42md. | |
245 | ||
246 | - dmalloc() memset()'s the non-debug (data) portion of the allocated | |
247 | memory to zero. Code that memset()'s the result returned by dmalloc() to | |
248 | zero is redundant. These redundancies were removed. | |
249 | ||
250 | - Some type declaration corrections to u_int16_t were made in common/tr.c | |
251 | (Token Ring support) thanks to a patch from Jason Vas Dias at RedHat. | |
252 | ||
253 | - A failover bug that was allowing leases that EXPIRED or were RELEASED | |
254 | where tsfp and tstp are identical timestamps to languish in these | |
255 | transitional states has been repaired. As a side effect, lease | |
256 | databases should be kept more consistent overall, not just for these | |
257 | transitional states. | |
258 | ||
259 | - If the lease db is deleted out from under the daemon, and it moves to rewrite | |
260 | the db, it will go ahead with the operation and move the new db into place | |
261 | once it detects the old db does not exist. | |
262 | ||
263 | - dhclient now ignores IRDA, SIT, and IEEE1394 network interfaces, as it | |
264 | is either nonsensical or (in the case of IEEE1394) is not known to support | |
265 | these interfaces. Thanks to Marius Gedminas and Andrew Pollock of Debian. | |
266 | ||
267 | - Some previously undocumented reasons for dhclient-script invoking has | |
268 | been doucmented in the dhclient-script.8 manpage. | |
269 | ||
270 | - Failover potential expiry calculations (TSTP) have been corrected. Results | |
271 | should be substantially more consistent, and proper given the constraints. | |
272 | ||
273 | - Adjusted lease state validation checks in potential-conflict, to | |
274 | account for possible clock skew similarly to normal state, and several | |
275 | previously illegal transitions were made legal (ex: active->released). | |
276 | ||
277 | - An impossible sanity check was removed from omapi/buffer.c, thanks to a | |
278 | patch from 'infamous42md'. | |
279 | ||
280 | - An OMAPI host/network byte order problem in lease time values has been | |
281 | repaired. | |
282 | ||
283 | - Several minor bugs, largely relating to treating 8-byte time values as | |
284 | 4-byte entities, have been repaired after careful review of the FreeBSD | |
285 | ports collection's patch set. Thanks to the nameless entities who have | |
286 | contributed to the FreeBSD ports. | |
287 | ||
288 | - When writing a trace file, the file is now created with permissions 0600, | |
289 | to help administrators avoid accidentally publicising sensitive config | |
290 | data. | |
291 | ||
292 | - The calculation of the maximum size of DHCP packets no longer includes | |
293 | Ethernet framing overhead. The result is that the 'Maximum Message | |
294 | Size' option advertised by clients, or the default value 576, is no | |
295 | longer reduced by 14 bytes, and instead directly reflects the IP level | |
296 | MTU (and the default, minimum allowed IP MTU of 576). | |
297 | ||
298 | - The special status of RELEASED/EXPIRED/RESET leases when a server | |
299 | is operating in partner-down was fixed. It no longer requires a | |
300 | lease be twice the MCLT beyond STOS to 'reallocate', and the expiry | |
301 | event to turn these into FREE leases without peer acknowledgement | |
302 | (after STOS+MCLT) has been repaired. | |
303 | ||
304 | - Compilation on older Solaris systems (lacking /usr/include/sys/int_types.h) | |
305 | has been repaired. | |
306 | ||
307 | - "append"ing a string onto the end of a "t" type option (such as the | |
308 | domain-name field) that had been improperly NULL-terminated by the | |
309 | DHCP server will no longer result in a truncated string containing | |
310 | only the option from the server, and not the expected appended value. | |
311 | Thanks to a patch from Jason Vas Dias at RedHat. | |
312 | ||
313 | - File handlers on configuration state (config files and lease dbs) should | |
314 | be treated consistently, regardless of wether TRACING is defined or not. | |
315 | ||
316 | - The linux build environment has had some minor improvements - better | |
317 | sensing of 64-bit pointer sizes (only used for establishing an icmp_id), | |
318 | and corrections to #if operators regarding LINUX_MAJOR should it ever | |
319 | move to 3.[01].x. | |
320 | ||
321 | - The server now tries harder to survive the condition where it is unable | |
322 | to open a new lease file to rewrite the lease state database. | |
323 | ||
324 | Changes since 3.0.3b3 | |
325 | ||
326 | - dhclient.conf documentation for interface {} was updated to reflect recent | |
327 | discussion on the dhcp-hackers mailing list. | |
328 | ||
329 | - In response to reports that the software does not compile on GCC 4.0.0, | |
330 | -Werror was removed from Makefile.conf for all platforms that used it. | |
331 | We will address the true problem in a future release; this is a temporary | |
332 | workaround. | |
333 | ||
334 | Changes since 3.0.3b2 | |
335 | ||
336 | - An error in code changes introduced in 3.0.3b2 was corrected, which caused | |
337 | static BOOTP clients to receive random addresses. | |
338 | ||
339 | Changes since 3.0.3b1 | |
340 | ||
341 | - A bug was fixed in BOOTPREQUEST handling code wherein stale references to | |
342 | host records would be left behind on leases that were not allocated to the | |
343 | client currently booting (eg in the case where the host was denied booting). | |
344 | ||
345 | - The dhcpd.conf.5 manpage was updated to be more clear in regards to | |
346 | multiple host declarations (thanks to Vincent McIntyre). 'Interim' style | |
347 | dynamic updates were also retouched. | |
348 | ||
349 | Changes since 3.0.2 | |
350 | ||
351 | - A bug was fixed where a server might load balance a DHCP REQUEST to its | |
352 | peer after already choosing not to load balance the preceeding DISCOVER. | |
353 | The peer cannot allocate the originating server's lease. | |
354 | ||
355 | - In the case where a secondary server lost its stable storage while the | |
356 | primary was still in communications-interrupted, and came back online, | |
357 | the lease databases would not be fully transferred to the secondary. | |
358 | This was due to the secondary errantly sending an extra UPDREQ message | |
359 | when the primary made its state transition to PARTNER-DOWN known. | |
360 | ||
361 | - The package will now compile cleanly in gcc 3.3 and 3.4. As a side effect, | |
362 | lease structures will be 9 bytes smaller on all platforms. Thanks to | |
363 | Jason Vas Dias at Redhat. | |
364 | ||
365 | - Interface discovery code in DISCOVER_UNCONFIGURED mode is now | |
366 | properly restricted to only detecting broadcast interfaces. Thanks | |
367 | to a patch from Jason Vas Dias at RedHat. | |
368 | ||
369 | - decode_udp_ip_header was changed so that the IP address was copied out | |
370 | to a variable, rather than referenced by a pointer. This enforces 4-byte | |
371 | alignment of the 32-bit IP address value. Thanks to a patch from Dr. | |
372 | Peter Poeml. | |
373 | ||
374 | - An incorrect log message was corrected thanks to a patch from | |
375 | Dr. Peter Poeml. | |
376 | ||
377 | - A bug in DDNS was repaired, where if the server's first DDNS action was | |
378 | a DDNS removal rather than a DDNS update, the resolver library's | |
379 | retransmit timer and retry timer was set to the default, implying a | |
380 | 15 second timeout interval. Which is a little excessive in a synchronous, | |
381 | single-threaded system. In all cases, ISC DHCP should now hold fast to | |
382 | a 1-second timeout, trying only once. | |
383 | ||
384 | - The siaddr field was being improperly set to the server-identifier when | |
385 | responding to DHCP messages. RFC2131 clarified the siaddr field as | |
386 | meaning the 'next server in the bootstrap process', eg a tftp server. | |
387 | The siaddr field is now left zeroed unless next-server is configured. | |
388 | ||
389 | - mockup_lease() could have returned in an error condition (or in the | |
390 | condition where no fixed-address was found matching the shared | |
391 | network) with stale references to a host record. This is probably not | |
392 | a memory leak since host records generally never die anyway. | |
393 | ||
394 | - A bug was repaired where failover servers would let stale client identifiers | |
395 | persist on leases that were reallocated to new clients not sending an id. | |
396 | ||
397 | - Binding scopes ("set var = value;") are now removed from leases allocated | |
398 | by failover peers if the lease had expired. This should help reduce the | |
399 | number of stale binding scopes on leases. | |
400 | ||
401 | - A small memory leak was closed involving client identifiers larger than | |
402 | 7 bytes, and failover. | |
403 | ||
404 | - Configuring a subnet in dhcpd.conf with a subnet mask of 32 bits might | |
405 | cause an internal function to overflow heap. Thanks to Jason Vas Dias | |
406 | at Redhat. | |
407 | ||
408 | - Some inconsistencies in treating numbers that the lexer parsed as 'NUMBER' | |
409 | or 'NUMBER_OR_NAME' was repaired. Hexadecimal parsing is affected, and | |
410 | should work better. | |
411 | ||
412 | - In several cases, parse warnings were being issued before the lexical | |
413 | token had been advanced to the token whose value was causing an error... | |
414 | causing parse warnings to claim the problem is on the wrong token. | |
415 | ||
416 | - Host declarations matching on client identifier for dynamic leases will | |
417 | no longer match fixed-address host declarations (this is now identical | |
418 | to behaviour for host records matching on hardware address). | |
419 | ||
420 | Changes since 3.0.2rc3 | |
421 | ||
422 | - A previously undocumented configuration directive, 'local-address', | |
423 | was documented in the dhcpd.conf manpage. | |
424 | ||
425 | Changes since 3.0.2rc2 | |
426 | ||
427 | - Two varaibles introduced in 3.0.2b1 were used without being initialized | |
428 | in the case where neither the FILE nor SNAME fields were available for | |
429 | overloading. This was repaired. | |
430 | ||
431 | - A heretofore believed to be impossible corner case of the option | |
432 | overloading implementation turned out to be possible ("Unable to sort | |
433 | overloaded options after 10 tries."). The implementation was reworked | |
434 | to consider the case of an option so large it would require more than | |
435 | three chunks to fit. | |
436 | ||
437 | - Many other instances of variables being used without being initialized | |
438 | were repaired. | |
439 | ||
440 | - An uninitialized variable in omapi_io_destroy() led to the discovery | |
441 | that this function may result in orphaned pointers (and hence, a memory | |
442 | leak). | |
443 | ||
444 | Changes since 3.0.2rc1 | |
445 | ||
446 | - allocate_lease() was rewritten to repair a bug in which the server would | |
447 | try to allocate an ABANDONED lease when FREE leases were available. | |
448 | ||
449 | Changes since 3.0.2b1 | |
450 | ||
451 | - Some dhcp-eval.5 manpage formatting was repaired. | |
452 | ||
453 | Changes since 3.0.1 | |
454 | ||
455 | - A bug was fixed in the server's 'option overloading' implementation, | |
456 | where options loaded into the 'file' and 'sname' packet fields were | |
457 | not aligned precisely as rfc2131 dictates. | |
458 | ||
459 | - The FreeBSD client script was changed to support the case where a domain | |
460 | name was not provided by the server. | |
461 | ||
462 | - A memory leak in 'omshell' per each command line parsed was | |
463 | repaired, thanks to a patch from Jarkko Torppa. | |
464 | ||
465 | - Log functions writing to stderr were adjusted to use the STDERR_FILENO | |
466 | system definition rather than '2'. This is a no-op for 90% of platforms. | |
467 | ||
468 | - One call to trace_write_packet_iov() counted the number of io vectors | |
469 | incorrectly, causing inconsistent tracefiles. This was fixed. | |
470 | ||
471 | - Some expression parse failure memory leaks were closed. | |
472 | ||
473 | - A host byte order problem in tracefiles was repaired. | |
474 | ||
475 | - Pools configured in DHCPD for failover possessing permission lists that | |
476 | previously were assumed to not include dyanmic bootp clients are now | |
477 | a little more pessimistic. The result is, dhcpd will nag you about just | |
478 | about most pools that possess a 'allow' statement with no 'deny' that | |
479 | would definitely match a dynamic bootp client. | |
480 | ||
481 | - The 'ddns-update-style' configuration warning bit now insists that | |
482 | the configuration be globally scoped. | |
483 | ||
484 | - Two memory leaks in dhclient were closed thanks to a patch from Felix | |
485 | Farkas. | |
486 | ||
487 | - Some minor but excellently pedantic documentation errors were fixed | |
488 | thanks to a patch from Thomas Klausner. | |
489 | ||
490 | - Bugs in operator precedence in executable statements have been repaired | |
491 | once again. More legal syntaxes should be parsed legally. | |
492 | ||
493 | - Failing to initialize a tracefile for any reason if a tracefile was | |
494 | specified is now a fatal error. Thanks to a patch from Albert Herranz. | |
495 | ||
496 | - Corrected a bug in which the number of leases transferred as calculated | |
497 | by the failover primary and sent to peers in POOLRESP responses may be | |
498 | incorrect. This value is not believed to be used by other failover | |
499 | implementations, excepting perhaps as logged information. | |
500 | ||
501 | - Corrected a bug in which 'dhcp_failover_send_poolresp()' was in fact | |
502 | sending POOLREQ messages instead of POOLRESP mesasges. This message | |
503 | was essentially ignored since failover secondaries effectively do not | |
504 | respond to POOLREQ messages. | |
505 | ||
506 | - Type definitions for various bitwidths of integers in the sunos5-5 | |
507 | build of ISC DHCP have been fixed. It should compile and run more | |
508 | easily when built in 64-bit for this platform. | |
509 | ||
510 | - "allow known-clients;" is now a legal syntax, to avoid confusion. | |
511 | ||
512 | - If one dhcp server chooses to 'load balance' a request to its failover | |
513 | peer, it first checks to see if it believes said peer has a free | |
514 | lease to allocate before ignoring the DISCOVER. | |
515 | ||
516 | - log() was logging a work buffer, rather than the value returned by | |
517 | executing the statements configured by the user. In some cases, | |
518 | the work buffer and the intended results were the same. In some other | |
519 | cases, they were not. This was fixed thanks to a patch from Gunnar | |
520 | Fjone and directconnect.no. | |
521 | ||
522 | - Compiler warnings for some string type conversions was fixed, thanks | |
523 | to Andreas Gustafsson. | |
524 | ||
525 | - The netbsd build environments were simplified to one, in which | |
526 | -Wconversion is not used, thanks to Andreas Gustafsson. | |
527 | ||
528 | - How randomness in the backoff-cutoff dhclient configuration variable | |
529 | is implemented was better documented in the manpage, and the behaviour | |
530 | of dhclient in REQUEST timeout handling was changed to match that of | |
531 | DISCOVER timeout handling. | |
532 | ||
533 | - Omapi was hardened against clients that pass in null values, thanks | |
534 | to a patch from Mark Jason Dominus. | |
535 | ||
536 | - A bug was fixed in dhclient that kept it from doing client-side | |
537 | ddns updates. Thanks to a patch from Andreas Gustafsson, which | |
538 | underwent some modification after review by Jason Vas Dias. | |
539 | ||
540 | - Failover implementations disconnected due to the network between | |
541 | them (rather than one of the two shutting down) will now try to | |
542 | re-establish the failover connection every 5 seconds, rather than | |
543 | to simply try once and give up until one of them is restarted. | |
544 | Thanks to a patch from Ulf Ekberg from Infoblox, and field testing | |
545 | by Greger V. Teigre which led to an enhancement to it. | |
546 | ||
547 | - A problem that kept DHCP Failover secondaries from tearing down | |
548 | ddns records was repaired. Thanks to a patch from Ulf Ekberg from | |
549 | Infoblox. | |
550 | ||
551 | - 64bit pointer sizes are detected properly on FreeBSD now. | |
552 | ||
553 | - A bug was repaired where the DHCP server would leave stale references | |
554 | to host records on leases it once thought about offering to certain | |
555 | clients. The result would be to apply host and 'known' scopes to the | |
556 | wrong clients (possibly denying booting). NOTE: The 'mis-host' patch | |
557 | that was being circulated as a workaround is not the way this bug was | |
558 | fixed. If you were a victim of this bug in 3.0.1, you are cautioned | |
559 | to proceed carefully and see if it fixes your problem. | |
560 | ||
561 | - A bug was repaired in the server's DHCPINFORM handling, where it | |
562 | tried to divine the client's address from the source packet and | |
563 | would get it wrong. Thanks to Anshuman Singh Rawat. | |
564 | ||
565 | - A log message was introduced to help illuminate the case where the | |
566 | server was unable to find a lease to assign to any BOOTP client. | |
567 | Thanks to Daniel Baker. | |
568 | ||
569 | - A minor dhcpd.conf.5 manpage error was fixed. | |
570 | ||
571 | Changes since 3.0.1rc14 | |
572 | ||
573 | - The global variable 'cur_time' was centralized and is now uniformly of a | |
574 | type #defined in system-dependent headers. It had previously been defined | |
575 | in one of many places as a 32-bit value, and this causes mayhem on 64-bit | |
576 | big endian systems. It probably wasn't too healthy on little endian | |
577 | systems either. | |
578 | ||
579 | - A printf format string error introduced in rc14 was repaired. | |
580 | ||
581 | - AIX system-dependent header file was altered to only define NO_SNPRINTF | |
582 | if the condition used to #ifdef in vsnprintf in AIX' header files | |
583 | is false. | |
584 | ||
585 | - The Alpha/OSF system-dependent header file was altered to define | |
586 | NO_SNPRINTF on OS revisions older than 4.0G. | |
587 | ||
588 | - omapip/test.c had string.h added to its includes. | |
589 | ||
590 | Changes since 3.0.1rc13 | |
591 | ||
592 | ! CAN-2004-0460 - CERT VU#317350: Five stack overflow exploits were closed | |
593 | in logging messages with excessively long hostnames provided by the | |
594 | clients. It is highly probable that these could have been used by | |
595 | attackers to gain arbitrary root access on systems using ISC DHCP 3.0.1 | |
596 | release candidates 12 or 13. Special thanks to Gregory Duchemin for | |
597 | both finding and solving the problem. | |
598 | ||
599 | ! CAN-2004-0461 - CERT VU#654390: Once the above was closed, an opening | |
600 | in log_*() functions was evidented, on some specific platforms where | |
601 | vsnprintf() was not believed to be available and calls were wrapped to | |
602 | sprintf() instead. Again, credit goes to Gregory Duchemin for finding | |
603 | the problem. Calls to snprintf() are now linked to a distribution-local | |
604 | snprintf implementation, only in those cases where the architecture is | |
605 | not known to provide one (see includes/cf/[arch].h). If you experience | |
606 | linking problems with snprintf/vsnprintf or 'isc_print_' functions, this | |
607 | is where to look. This vulnerability did not exist in any previously | |
608 | published version of ISC DHCP. | |
609 | ||
610 | - Compilation on hpux 11.11 was repaired. | |
611 | ||
612 | - 'The cross-compile bug fix' was backed out. | |
613 | ||
614 | Changes since 3.0.1rc12 | |
615 | ||
616 | - Fixed a bug in omapi lease lookup function, to form the hardware | |
617 | address for the hash lookup correctly, thanks to a patch from | |
618 | Richard Hirst. | |
619 | ||
620 | - Fixed a bug where dhcrelay was sending relayed responses back to the | |
621 | broadcast address, but with the source's unicast mac address. Should | |
622 | now conform to rfc2131 section 4.1. | |
623 | ||
624 | - Cross-compile bug fix; use $(AR) instead of ar. Thanks to Morten Brorup. | |
625 | ||
626 | - Fixed a crash bug in dhclient where dhcpd servers that do not provide | |
627 | renewal times results in an FPE. As a side effect, dhclient can now | |
628 | properly handle 0xFFFFFFFF (-1) expiry times supplied by servers. Thanks | |
629 | to a patch from Burt Silverman. | |
630 | ||
631 | - The 'ping timeout' debugs from rc12 were removed to -DDEBUG only, | |
632 | and reformatted to correct a compilation error on solaris platforms. | |
633 | ||
634 | - A patch was applied which fixes a case where leases read from the | |
635 | leases database do not properly over-ride previously read leases. | |
636 | ||
637 | - dhcpctl.3 manpage was tweaked. | |
638 | ||
639 | Changes since 3.0.1rc11 | |
640 | ||
641 | - A patch from Steve Campbell was applied with minor modifications to | |
642 | permit reverse dns PTR record updates with values containing spaces. | |
643 | ||
644 | - A patch from Florian Lohoff was applied with some modifications to | |
645 | dhcrelay. It now discards packets whose hop count exceeds 10 by default, | |
646 | and a command-line option (-c) can be used to set this threshold. | |
647 | ||
648 | - A failover bug relating to identifying peers by name length instead of | |
649 | by name was fixed. | |
650 | ||
651 | - Delcaring failover configs within shared-network statements should no | |
652 | longer result in error. | |
653 | ||
654 | - The -nw command line option to dhclient now works. | |
655 | ||
656 | - Thanks to a patch from Michael Richardson: | |
657 | - Some problems with long option processing have been fixed. | |
658 | - Some fixes to minires so that updates of KEY records will work. | |
659 | ||
660 | - contrib/ms2isc was updated by Shu-Min Chang of the Intel Corporation. | |
661 | see contrib/ms2isc/readme.txt for revision notes. | |
662 | ||
663 | - Dhclient no longer uses shell commands to kill another instance of | |
664 | itself, it sends the signal directly. Thanks to a patch from Martin | |
665 | Blapp. | |
666 | ||
667 | - The FreeBSD dhclient-script was changed so that a failure to write to | |
668 | /etc/resolv.conf does not prematurely end the script. This keeps dhclient | |
669 | from looping infinitely when this is the case. Thanks to a patch from | |
670 | Martin Blapp. | |
671 | ||
672 | - A patch from Bill Stephens was applied which resolves a problem with lease | |
673 | expiry times in failover configurations. | |
674 | ||
675 | - A memory leak in configuration parsing was closed thanks to a patch from | |
676 | Steve G. | |
677 | ||
678 | - The function which discovers interfaces will now skip non-broadcast or | |
679 | point-to-point interfaces, thanks to a patch from David Brownlee. | |
680 | ||
681 | - Options not yet known by the dhcpd or dhclient have had their names | |
682 | changed such that they do not contain # symbols, in case they should ever | |
683 | appear in a lease file. An option that might have been named "#144" is | |
684 | now "unknown-144". | |
685 | ||
686 | - Another patch from Bill Stephens which allows the ping-check timeout to | |
687 | be configured as 'ping-timeout'. Defaults to 1. | |
688 | ||
689 | Changes since 3.0.1rc10 | |
690 | ||
691 | - Potential buffer overflows in minires repaired. | |
692 | ||
693 | - A change to the linux client script to use /bin/bash, since /bin/sh may | |
694 | not be bash. | |
695 | ||
696 | - Some missing va_end cleanups thanks to a patch from Thomas Klausner. | |
697 | ||
698 | - A correction of boolean parsing syntax validation - some illegal syntaxes | |
699 | that worked before are now detected and produce errs, some legal syntaxes | |
700 | that errored before will now work properly. | |
701 | ||
702 | - Some search-and-replace errors that caused some options to change their | |
703 | names was repaired. | |
704 | ||
705 | - Shu-min Chang of the Intel corporation has contributed a perl script and | |
706 | module that converts the MS NT4 DHCP configuration to a ISC DHCP3 | |
707 | configuration file. | |
708 | ||
709 | - Applied the remainder of the dhcpctl memory leak patch provided by Bill | |
710 | Squier at ReefEdge, Inc. (groo@reefedge.com). | |
711 | ||
712 | - Missing non-optional failover peer configurations will now result in a soft | |
713 | error rather than a null dereference. | |
714 | ||
715 | Changes since 3.0.1rc9 | |
716 | ||
717 | - A format string was corrected to fix compiler warnings. | |
718 | ||
719 | - A number of spelling corrections were made in the man pages. | |
720 | ||
721 | - The dhclient.conf.5 man page was changed to refer to do-forward-updates | |
722 | rather than a configuration option that doesn't exist. | |
723 | ||
724 | - A FreeBSD-specific bug in the interface removal handling was fixed. | |
725 | ||
726 | - A Linux-specific Token Ring detection problem was fixed. | |
727 | ||
728 | - Hashes removed from as-yet-unknown agent options, having those options | |
729 | appear in reality before we know about them will no longer produce | |
730 | self-corrupting lease databases. | |
731 | ||
732 | - dhclient will use the proper port numbers now when using the -g option. | |
733 | ||
734 | - A order-of-operations bug with 2 match clauses in 1 class statement is | |
735 | fixed thanks to a patch from Andrew Matheson. | |
736 | ||
737 | - Compilation problems on Solaris were fixed. | |
738 | ||
739 | - Compilation problems when built with DEBUG or DEBUG_PACKET were repaired. | |
740 | ||
741 | - A fix to the dhcp ack process which makes certain group options will be | |
742 | included in the first DHCPOFFER message was made thanks to a patch from | |
743 | Ling Gou. | |
744 | ||
745 | - A few memory leaks were repaired thanks to patches from Bill Squier at | |
746 | ReefEdge, Inc. (groo@reefedge.com). | |
747 | ||
748 | - A fix for shared-networks that sometimes give clients options for the | |
749 | wrong subnets (in particular, 'option routers') was applied, thanks to | |
750 | Ted Lemon for the patch. | |
751 | ||
752 | - Omshell's handling of dotted octets as values was changed such that dots | |
753 | one after the other produce zero values in the integer string. | |
754 | ||
755 | Changes since 3.0.1rc8 | |
756 | ||
757 | - Fix a format string vulnerability in the server that could lead to a | |
758 | remote root compromise (discovered by NGSEC Research Team, www.ngsec.com). | |
759 | ||
760 | - Add additional support for NetBSD/sparc64. | |
761 | ||
762 | - Fix a bug in the command-line parsing of the client. Also, resolve | |
763 | a memory leak. | |
764 | ||
765 | - Add better support for shells other than bash in the Linux client | |
766 | script. | |
767 | ||
768 | - Various build fixes for modern versions of FreeBSD and Linux. | |
769 | ||
770 | - Fix a bad bounds check when printing binding state names. | |
771 | ||
772 | - Clarify documentation about fixed-address and multiple addresses. | |
773 | ||
774 | - Fix a typo in the authoritative error message. | |
775 | ||
776 | - Make a log entry when we can't write a billing class. | |
777 | ||
778 | - Use conversion targets that are the right size on all architectures. | |
779 | ||
780 | - Increment the hop count when relaying. | |
781 | ||
782 | - Log a message when lease state is changed through OMAPI. | |
783 | ||
784 | - Don't rerun the shared_network when evaluating the pool. | |
785 | ||
786 | - Fix a reversed test in the parser. | |
787 | ||
788 | - Change the type of rbuf_max. | |
789 | ||
790 | - Make FTS_LAST a manifest constant to quiet warnings. | |
791 | ||
792 | Changes since 3.0.1rc7 | |
793 | ||
794 | - Fix two compiler warnings that are generated when compiling on Solaris | |
795 | with gcc. These stop the build, even though they weren't actually | |
796 | errors, because we prefer that our builds generate no warnings. | |
797 | ||
798 | Changes since 3.0.1rc6 | |
799 | ||
800 | - Don't allow a lease that's in the EXPIRED, RELEASED or RESET state | |
801 | to be renewed. | |
802 | ||
803 | - Implement lease stealing for cases where the primary has fewer leases | |
804 | than the secondary, as called for by the standard. | |
805 | ||
806 | - Add a fudge factor to the lease expiry acceptance code, (suggested | |
807 | by Kevin Miller of CMU). | |
808 | ||
809 | - Fix a bug in permit_list_match that made it much too willing to say | |
810 | that two permit lists matched. | |
811 | ||
812 | - Unless DEBUG_DNS_UPDATES is defined, print more user-friendly (and | |
813 | also more compact) messages about DNS updates. | |
814 | ||
815 | - Fix a bug in generating wire-format domain names for the FQDN option. | |
816 | ||
817 | - Fix a bug where the FQDN option would not be returned if the client | |
818 | requested it, contrary to the standard. | |
819 | ||
820 | - On Darwin, use the FreeBSD DHCP client script. | |
821 | ||
822 | - On NetBSD/sparc, don't check for casting warnings. | |
823 | ||
824 | - Add a flag in the DHCP client to disable updating the client's A | |
825 | record when sending an FQDN option indicating that the client is | |
826 | going to update its A record. | |
827 | ||
828 | - In the client, don't attempt a DNS update until one second after | |
829 | configuring the new IP address, and if the update times out, keep | |
830 | trying until a response, positive or negative, is received from the | |
831 | DNS server. | |
832 | ||
833 | - Fix an uninitialized memory bug in the DHCP client. | |
834 | ||
835 | - Apply some FreeBSD-specific bug fixes suggested by Murray Stokely. | |
836 | ||
837 | - Fix a bug in ns_parserr(), where it was returning the wrong sort | |
838 | of result code in some cases (suggested by Ben Harris of the | |
839 | NetBSD project). | |
840 | ||
841 | - Fix a bug in is_identifier(), where it was checking against EOF | |
842 | instead of the END_OF_FILE token (also suggested by Ben Harris). | |
843 | ||
844 | - Fix a bug where if an option universe contained no options, the | |
845 | DHCP server could dump core (Walter Steiner). | |
846 | ||
847 | - Fix a bug in the handling of encapsulated options. | |
848 | ||
849 | - Fix a bug that prevented NWIP suboptions from being processed. | |
850 | ||
851 | - Delete the FTS_BOOTP and FTS_RESERVED states and implement them | |
852 | as modifier flags to the FTS_ACTIVE state, as called for in the | |
853 | failover protocol standard. | |
854 | ||
855 | - Fix bugs in the pool merging code that resulted in references and | |
856 | dereferences of null pointers. This bug had no impact unless the | |
857 | POINTER_DEBUG flag was defined. | |
858 | ||
859 | - In the server, added a do-forward-updates flag that can be used to | |
860 | disable forward updates in all cases, so that sites that want the | |
861 | clients to take sole responsibility for updating their A record can | |
862 | do so. | |
863 | ||
864 | - Make it possible to disable optimization of PTR record updates. | |
865 | ||
866 | Changes since 3.0.1rc5 | |
867 | ||
868 | - Include some new documentation and changes provided by Karl Auer. | |
869 | ||
870 | - Add a workaround for some Lexmark printers that send a double-NUL- | |
871 | terminated host-name option, which would break DNS updates. | |
872 | ||
873 | - Fix an off-by-one error in the MAC-address checking code for | |
874 | DHCPRELEASE that was added in 3.0.1rc5. | |
875 | ||
876 | - Fix a bug where client-specific information was not being discarded | |
877 | from the lease when it expired or was released, resulting in | |
878 | problems if the lease was reallocated to a different client. | |
879 | ||
880 | - If more than one allocation pool is specified that has the same set | |
881 | of constraints as another allocation pool on the same shared | |
882 | network, merge the two pools. | |
883 | ||
884 | - Don't print an error in fallback_discard, since this just causes | |
885 | confusion and does not appear to be helping to encourage anyone to | |
886 | fix this bug. | |
887 | ||
888 | Changes since 3.0.1rc4 | |
889 | ||
890 | - Fix a bug that would cause the DHCP server to spin if asked to parse | |
891 | a certain kind of incorrect statement. | |
892 | ||
893 | - Fix a related bug that would prevent an error from being reported in | |
894 | the same case. | |
895 | ||
896 | - Additional documentation. | |
897 | ||
898 | - Make sure that the hardware address matches the lease when | |
899 | processing a DHCPRELEASE message. | |
900 | ||
901 | Changes since 3.0.1rc3 | |
902 | ||
903 | - A minor bug fix in the arguments to a logging function call. | |
904 | - Documentation update for dhcpd.conf. | |
905 | ||
906 | Changes since 3.0.1rc2 | |
907 | ||
908 | - Allow the primary to send a POOLREQ message. This isn't what the current | |
909 | failover draft says to do, so we may have to back it out if I can't get the | |
910 | authors to relent, but the scheme for balancing that's specified in the | |
911 | current draft seems needlessly hairy, so I'm floating a trial balloon. | |
912 | The rc1 code did not implement the method described in the draft either. | |
913 | ||
914 | Changes since 3.0.1rc1 | |
915 | ||
916 | - Treat NXDOMAIN and NXRRSET as success when we are trying to delete a | |
917 | domain or RRSET. This allows the DHCP server to forget about a name | |
918 | it added to the DNS once it's been removed, even if the DHCP server | |
919 | wasn't the one that removed it. | |
920 | ||
921 | - Install defaults for failover maximum outstanding updates and maximum | |
922 | silent time. This prevents problems that might occur if these values | |
923 | were not configured. | |
924 | ||
925 | - Don't do DDNS deletes if ddns-update-style is none. | |
926 | ||
927 | - Return relay agent information options in DHCPNAK. This prevents DHCPNAK | |
928 | messages from being dropped when the relay agent information option contains | |
929 | routing information. | |
930 | ||
931 | - Fix a problem where coming up in recover wouldn't result in an update | |
932 | request being sent. | |
933 | ||
934 | - Add some more chatty messages when we start a recovery update and when it's | |
935 | done. | |
936 | ||
937 | - Fix a possible problem where some state might have been left around | |
938 | after the peer lost contact and regained contact about how many updates | |
939 | were pending. | |
940 | ||
941 | - Don't nix a lease update because of a lease conflict. This test has | |
942 | never (as far as I know) prevented a mistake, and it appears to cause | |
943 | problems with failover. | |
944 | ||
945 | - Add support in rc history code for keeping a selective history, rather | |
946 | than a history of all references and dereferences. This code is only used | |
947 | when extensive additional debugging is enabled. | |
948 | ||
949 | Changes since 3.0 | |
950 | ||
951 | - Make allocators for hash tables. As a side effect, this fixes a memory | |
952 | smash in the subclass allocation code. | |
953 | ||
954 | - Fix a small bug in omshell where if you try to close an object when | |
955 | no object is open, it dumps core. | |
956 | ||
957 | - Fix an obscure coredump that could occur on shutdown. | |
958 | ||
959 | - Fix a bug in the recording of host declaration rubouts in the lease file. | |
960 | ||
961 | - Fix two potential spins in the host deletion code. | |
962 | ||
963 | - Fix a core dump that would happen if an application tried to update | |
964 | a host object attribute with a null value. | |
965 | ||
966 | Changes since 3.0 Release Candidate 12 | |
967 | ||
968 | - Fix a memory leak in the evaluation code. | |
969 | ||
970 | - Fix an obscure core dump. | |
971 | ||
972 | - Print a couple of new warnings when parsing the configuration file | |
973 | when crucial information is left out. | |
974 | ||
975 | - Log "no free leases" as an error. | |
976 | ||
977 | - Documentation updates. | |
978 | ||
979 | Changes since 3.0 Release Candidate 11 | |
980 | ||
981 | - Always return a subnet selection option if one is sent. | |
982 | ||
983 | - Fix a warning that was being printed because an automatic data | |
984 | structure wasn't zeroed. | |
985 | ||
986 | - Fix some failover state transitions that were being handled | |
987 | incorrectly. | |
988 | ||
989 | - When supersede_lease is called on a lease whose end time has already | |
990 | expired, but for which a state transition has not yet been done, do | |
991 | a state transition. This fixes the case where if the secondary | |
992 | allocated a lease to a client and the lease "expired" while the | |
993 | secondary was in partner-down, no expiry event would actually | |
994 | happen, so the lease would remain active until the primary was | |
995 | restarted. | |
996 | ||
997 | Changes since 3.0 Release Candidate 10 | |
998 | ||
999 | - Fix a bug that was preventing released leases from changing state | |
1000 | in failover-enabled pools. | |
1001 | ||
1002 | - Fix a core dump in the client identifier finder code (for host | |
1003 | declarations). | |
1004 | ||
1005 | - Finish fixing a bug where bogus data would sometimes get logged to | |
1006 | the dhclient.leases file because it was opened as descriptor 2. | |
1007 | ||
1008 | - Fix the Linux dhclient-script according to suggestions made by | |
1009 | several people on the dhcp-client mailing list. | |
1010 | ||
1011 | - Log successful DNS updates at LOG_INFO, not LOG_ERROR. | |
1012 | ||
1013 | - Print an error message and refuse to run if a failover peer is | |
1014 | defined but not referenced by any pools. | |
1015 | ||
1016 | - Correct a confusing error message in failover. | |
1017 | ||
1018 | Changes since 3.0 Release Candidate 9 | |
1019 | ||
1020 | - Fix a bug in lease allocation for Dynamic BOOTP clients. | |
1021 | ||
1022 | Changes since 3.0 Release Candidate 8 Patchlevel 2 | |
1023 | ||
1024 | - Fix a bug that prevented update-static-leases from working. | |
1025 | ||
1026 | - Document failover-state OMAPI object. | |
1027 | ||
1028 | - Fix a compilation error on SunOS 4. | |
1029 | ||
1030 | Changes since 3.0 Release Candidate 8 Patchlevel 1 | |
1031 | ||
1032 | - Fix a parsing bug that broke dns updates (both interim and ad-hoc). | |
1033 | This was introduced in rc8pl1 as an unintended result of the memory | |
1034 | leakage fixes that were in pl1. | |
1035 | ||
1036 | - Fix a long-standing bug where the server would record that an update | |
1037 | had been done for a client with no name, even though no update had | |
1038 | been done, and then when the client's lease expired the deletion of | |
1039 | that nonexistant record would time out because the name was the null | |
1040 | string. | |
1041 | ||
1042 | - Clean up the omshell, dhcpctl and omapi man pages a bit. | |
1043 | ||
1044 | Changes since 3.0 Release Candidate 8 | |
1045 | ||
1046 | - Fix a bug that could cause the DHCP server to spin if | |
1047 | one-lease-per-client was enabled. | |
1048 | ||
1049 | - Fix a bug that was causing core dumps on BSD/os in the presence of | |
1050 | malformed packets. | |
1051 | ||
1052 | - In partner-down state, don't restrict lease lengths to MCLT. | |
1053 | ||
1054 | - On the failover secondary, record the MCLT received from the primary | |
1055 | so that if we come up without a connection to the primary we don't | |
1056 | wind up giving out zero-length leases. | |
1057 | ||
1058 | - Fix some compilation problems on BSD/os. | |
1059 | ||
1060 | - Fix a bunch of memory leaks. | |
1061 | ||
1062 | - Fix a couple of bugs in the option printer. | |
1063 | ||
1064 | - Fix an obscure error reporting bug in the dns update code, and also | |
1065 | make the message clearer when a key algorithm isn't supported. | |
1066 | ||
1067 | - Fix a bug in the tracing code that prevented trace runs that used | |
1068 | tcp connections from being played back. | |
1069 | ||
1070 | - Add some additional debugging capability for catching memory leaks | |
1071 | on exit. | |
1072 | ||
1073 | - Make the client release the lease correctly on shutdown. | |
1074 | ||
1075 | - Add some configurability to the build system. | |
1076 | ||
1077 | - Install omshell manual page in man1, not man8. | |
1078 | ||
1079 | - Craig Gwydir sent in a patch that fixes a long-standing bug in the | |
1080 | DHCP client that could cause core dumps, but that for some reason | |
1081 | hadn't been noticed until now. | |
1082 | ||
1083 | Changes since 3.0 Release Candidate 7 | |
1084 | ||
1085 | - Fix a bug in failover where we weren't sending updates after a | |
1086 | transition from communications-interrupted to normal. | |
1087 | ||
1088 | - Handle expired/released/reset -> free transition according to the | |
1089 | protocol specification (this works - the other way not only wasn't | |
1090 | conformant, but also didn't work). | |
1091 | ||
1092 | - Add a control object in both client and server that allows either | |
1093 | daemon to be shut down cleanly. | |
1094 | ||
1095 | - When writing a lease, if we run out of disk space, shut down the | |
1096 | output file and insist on writing a new one before proceeding. | |
1097 | ||
1098 | - In the server, if the OMAPI listener port is occupied, keep trying | |
1099 | to get it, rather than simply giving up and exiting. | |
1100 | ||
1101 | - Support fetching variables from leases and also updating and adding | |
1102 | variables to leases via OMAPI. | |
1103 | ||
1104 | - If two failover peers have wildly different clocks, refuse to start | |
1105 | doing failover. | |
1106 | ||
1107 | - Fix a bug in the DNS update code that could cause core dumps when | |
1108 | running on alpha processors. | |
1109 | ||
1110 | - Fixed a bug in ddns updates for static lease entries, thanks to a | |
1111 | patch from Andrey M Linkevitch. | |
1112 | ||
1113 | - Add support for Darwin/MacOS X | |
1114 | ||
1115 | - Install omshell (including new documentation). | |
1116 | ||
1117 | - Support DNS updates in the client (this is a very obscure feature | |
1118 | that most DHCP client users probably will not be able to use). | |
1119 | ||
1120 | - Somewhat cleaner status logging in the client. | |
1121 | ||
1122 | - Make OMAPI key naming syntax compatible with the way keys are | |
1123 | actually named (key names are domain names). | |
1124 | ||
1125 | - Fix a bug in the lease file writer. | |
1126 | ||
1127 | - Install DHCP ISC headers in a different place than BIND 9 ISC | |
1128 | headers, to avoid causing trouble in BIND 9 builds. | |
1129 | ||
1130 | - Don't send updates for attributes on an object when the attributes | |
1131 | haven't changed. Support deleting attributes on remote objects. | |
1132 | ||
1133 | - Fix a number of bugs in omshell, and add the unset and refresh | |
1134 | statements. | |
1135 | ||
1136 | - Handle disconnects in OMAPI a little bit more intelligently (so that | |
1137 | the caller gets ECONNRESET instead of EINVAL). | |
1138 | ||
1139 | - Fix a bunch of bugs in the handling of clients that have existing | |
1140 | leases when the try to renew their leases while failover is | |
1141 | operating. | |
1142 | ||
1143 | Changes since 3.0 Release Candidate 6 | |
1144 | ||
1145 | - Fix a core dump that could happen when processing a DHCPREQUEST from | |
1146 | a client that had a host declaration that contained both a | |
1147 | fixed-address declaration and a dhcp-client-identifier option | |
1148 | declaration, if the client identifier was longer than nine bytes. | |
1149 | ||
1150 | - Fix a memory leak that could happen in certain obscure cases when | |
1151 | using omapi to manipulate leases. | |
1152 | ||
1153 | - Fix some bugs and omissions in omshell. | |
1154 | ||
1155 | ||
1156 | Changes since 3.0 Release Candidate 5 | |
1157 | ||
1158 | - Fix a bug in omapi_object_dereference that prevented objects in | |
1159 | chains from having their reference counts decreased on dereference. | |
1160 | ||
1161 | - Fix a bug in omapi_object_dereference that would prevent object | |
1162 | chains from being freed upon removal of the last reference external | |
1163 | to the chain. | |
1164 | ||
1165 | - Fix a number of other memory leaks in the OMAPI protocol subsystem. | |
1166 | ||
1167 | - Add code in the OMAPI protocol handler to trace memory leakage. | |
1168 | ||
1169 | - Clean up the memory allocation/reference history printer. | |
1170 | ||
1171 | - Support input of dotted quads and colon-separated hex lists as | |
1172 | attribute values in omshell. | |
1173 | ||
1174 | - Fix a typo in the Linux interface discovery code. | |
1175 | ||
1176 | - Conditionalize a piece of trace code that wasn't conditional. | |
1177 | ||
1178 | Changes since 3.0 Release Candidate 4 | |
1179 | ||
1180 | - Fix a bug that would prevent leases from being abandoned properly on | |
1181 | DHCPDECLINE. | |
1182 | ||
1183 | - Fix failover peer OMAPI support. | |
1184 | ||
1185 | - In failover, correctly handle expiration of leases. Previously, | |
1186 | leases would never be reclaimed because they couldn't make the | |
1187 | transition from EXPIRED to FREE. | |
1188 | ||
1189 | - Fix some broken failover state transitions. | |
1190 | ||
1191 | - Documentation fixes. | |
1192 | ||
1193 | - Take out an unnecessary check in DHCP relay agent information option | |
1194 | stashing code that was preventing REBINDING clients from rebinding. | |
1195 | ||
1196 | - Prevent failover peers from allocating leases in DHCPREQUEST | |
1197 | processing if the lease belongs to the other server. | |
1198 | ||
1199 | - Record server version in lease file introductory comment. | |
1200 | ||
1201 | - Correctly report connection errors in OMAPI and failover. | |
1202 | ||
1203 | - Make authentication signature algorithm name comparisons in OMAPI | |
1204 | case-insensitive. | |
1205 | ||
1206 | - Fix compile problem on SunOS 4.x | |
1207 | ||
1208 | - If a signature algorithm is not terminated with '.', terminate it so | |
1209 | that comparisons between fully-qualified names will work | |
1210 | consistently. | |
1211 | ||
1212 | - Different SIOCGIFCONF probe code, may "fix" problem on some Linux | |
1213 | systems with the probe not working correctly. | |
1214 | ||
1215 | - Don't allow user to type omapi key on command line of omshell. | |
1216 | ||
1217 | Changes since 3.0 Release Candidate 3 | |
1218 | ||
1219 | - Do lease billing on startup in a way that I *think* will finally do | |
1220 | the billing correctly - the previous method could overbill as a | |
1221 | result of duplicate leases. | |
1222 | ||
1223 | - Document OMAPI server objects. | |
1224 | ||
1225 | Changes since 3.0 Release Candidate 2 Patchlevel 1 | |
1226 | ||
1227 | - Fix some problems in the DDNS update code. Thanks to Albert | |
1228 | Herranz for figuring out the main problem. | |
1229 | ||
1230 | - Fix some reference counting errors on host entries that were causing | |
1231 | core dumps. | |
1232 | ||
1233 | - Fix a byte-swap bug in the token ring code, thanks to Jochen | |
1234 | Friedrich. | |
1235 | ||
1236 | - Fix a bug in lease billing, thanks to Jonas Bulow. | |
1237 | ||
1238 | Changes since 3.0 Release Candidate 2 | |
1239 | ||
1240 | - Change the conditions under which a DHCPRELEASE is actually | |
1241 | committed to be consistent with lease binding states rather than | |
1242 | using the lease end time. This may fix some problems with the | |
1243 | billing class code. | |
1244 | ||
1245 | - Fix a bug where lease updates would fail on Digital Unix (and maybe | |
1246 | others) because malloc was called with a size of zero. | |
1247 | ||
1248 | - Fix a core dump that happens when the DHCP server can't create its | |
1249 | trace file. | |
1250 | ||
1251 | Changes since 3.0 Release Candidate 1 Patchlevel 1 | |
1252 | ||
1253 | - Fix the dhcp_failover_put_message to not attempt to allocate a | |
1254 | zero-length buffer. Some versions of malloc() fail if you try to | |
1255 | allocate a zero-length buffer, and this was causing problems on, | |
1256 | e.g., Digital Unix. | |
1257 | ||
1258 | - Fix a case where the failover code was printing an error message | |
1259 | when no error had occurred. | |
1260 | ||
1261 | - Fix a problem where when a server went down and back up again, the | |
1262 | peer would not see a state transition and so would stay in the | |
1263 | non-communicating state. | |
1264 | ||
1265 | - Be smart about going into recover_wait. | |
1266 | ||
1267 | - Fix a problem in the failover implementation where peers would fail | |
1268 | to come into sync if interrupted in the RECOVER state. This could | |
1269 | have been the cause of some problems people have reported recently. | |
1270 | ||
1271 | - Fix a problem with billing classes where they would not be unbilled | |
1272 | when the client lease expired. | |
1273 | ||
1274 | - If select fails, figure out which descriptor is bad, and cut it out | |
1275 | of the I/O loop. This prevents a potentially nasty spin. I | |
1276 | haven't heard any report it in a while, but it came up consistently | |
1277 | in testing. | |
1278 | ||
1279 | - Fix a bug in the relay agent where if you specified interfaces on | |
1280 | the command line, it would fail. | |
1281 | ||
1282 | - Fix a couple of small bugs in the omapi connection object (no known | |
1283 | user impact). | |
1284 | ||
1285 | - Add the missing 3.0 Beta 1 lease conversion script. | |
1286 | ||
1287 | - Read dhcp client script hooks if they exist, rather than only if | |
1288 | they're executable. | |
1289 | ||
1290 | Changes since 3.0 Release Candidate 1 | |
1291 | ||
1292 | - Fix a memory smash that happens when fixed-address leases are used. | |
1293 | ANY SITE AT WHICH FIXED-ADDRESS STATEMENTS ARE BEING USED SHOULD | |
1294 | UPGRADE IMMEDIATELY. This has been a long-standing bug - thanks to | |
1295 | Alvise Nobile for discovering it and helping me to find it! | |
1296 | ||
1297 | - Fix a small bug in binary-to-ascii, thanks to H. Peter Anvin of | |
1298 | Transmeta. | |
1299 | ||
1300 | - There is a known problem with the DHCP server doing failover on | |
1301 | Compaq Alpha systems. This patchlevel is not a release candidate | |
1302 | because of this bug. The bug should be straightforward to fix, so | |
1303 | a new release candidate is expected shortly. | |
1304 | ||
1305 | - There is a known problem in the DDNS update code that is probably a | |
1306 | bug, and is not, as far as we know, fixed in this patchlevel. | |
1307 | ||
1308 | Changes since 3.0 Beta 2 Patchlevel 24 | |
1309 | ||
1310 | - Went over problematic failover state transitions and made them all | |
1311 | work, so that failover should now much less fragile. | |
1312 | ||
1313 | - Add some dhcpctl and omapi documentation | |
1314 | ||
1315 | - Fix compile errors when compiling with unusual predefines. | |
1316 | ||
1317 | - Make Token Ring work on Linux 2.4 | |
1318 | ||
1319 | - Fix the Digital Unix BPF_WORDALIGN bug. | |
1320 | ||
1321 | - Fix some dhcp client documentation errors. | |
1322 | ||
1323 | - Update some parts of the README file. | |
1324 | ||
1325 | - Support GCC on SCO. | |
1326 | ||
1327 | Changes since 3.0 Beta 2 Patchlevel 23 | |
1328 | ||
1329 | - Fix a bug in the DNS update code where a status code was not being | |
1330 | checked. This may have been causing core dumps. | |
1331 | ||
1332 | - When parsing the lease file, if a lease declaration includes a | |
1333 | billing class statement, and the lease already has a billing class, | |
1334 | unbill the old class. | |
1335 | ||
1336 | - When processing failover transactions, where acks will be deferred, | |
1337 | process the state transition immediately. | |
1338 | ||
1339 | - Don't try to use the new SIOCGIFCONF buffer size detection code on | |
1340 | Linux 2.0, which doesn't provide this functionality. | |
1341 | ||
1342 | - Apply a patch suggested by Tuan Uong for a problem in dlpi.c. | |
1343 | ||
1344 | - Fix a problem in using the which command in the configure script. | |
1345 | ||
1346 | - Fix a parse error in the client when setting up an omapi listener. | |
1347 | ||
1348 | - Document the -n and -g flags to the client. | |
1349 | ||
1350 | - Make sure there is always a stdin and stdout on startup. This | |
1351 | prevents shell scripts from accidentally writing error messages into | |
1352 | configuration files that happen to be opened as stderr. | |
1353 | ||
1354 | - If an interface is removed, the client will now notice that it is | |
1355 | gone rather than spinning. This has only been tested on NetBSD. | |
1356 | ||
1357 | - The client will attempt to get an address even if it can't create a | |
1358 | lease file. | |
1359 | ||
1360 | - Don't overwrite tracefiles. | |
1361 | ||
1362 | - Fix some memory allocation bugs in failover. | |
1363 | ||
1364 | Changes since 3.0 Beta 2 Patchlevel 22 | |
1365 | ||
1366 | - Apply some patches suggested by Cyrille Lefevre, who is maintaining | |
1367 | the FreeBSD ISC DHCP Distribution port. | |
1368 | ||
1369 | - Fix a core dump in DHCPRELEASE. | |
1370 | ||
1371 | Changes since 3.0 Beta 2 Patchlevel 21 | |
1372 | ||
1373 | - This time for sure: fix the spin described in the changes for pl20. | |
1374 | ||
1375 | Changes since 3.0 Beta 2 Patchlevel 20 | |
1376 | ||
1377 | - Fix a problem with Linux detecting large numbers of interfaces (Ben) | |
1378 | ||
1379 | - Fix a memory smash in the quotify code, which was introduced in | |
1380 | pl19. | |
1381 | ||
1382 | - Actually fix the spin described in the changes for pl20. The | |
1383 | previous fix only partially fixed the problem - enough to get it | |
1384 | past the regression test. | |
1385 | ||
1386 | Changes since 3.0 Beta 2 Patchlevel 19 | |
1387 | ||
1388 | - Fix a bug that could cause the server to abort if compiled with | |
1389 | POINTER_DEBUG enabled. | |
1390 | ||
1391 | - Fix a bug that could cause the server to spin when responding to a | |
1392 | DHCPREQUEST. | |
1393 | ||
1394 | - Apply Joost Mulders' suggested patches for DLPI on x86. | |
1395 | ||
1396 | - Support NUL characters in quoted strings. | |
1397 | ||
1398 | - Install unformatted man pages on SunOS. | |
1399 | ||
1400 | Changes since 3.0 Beta 2 Patchlevel 18 | |
1401 | ||
1402 | - Allow the server to be placed in partner-down state using OMAPI. | |
1403 | (Damien Neil) | |
1404 | ||
1405 | - Implement omshell, which can be used to do arbitrary things to the | |
1406 | server (in theory). (Damien Neil) | |
1407 | ||
1408 | - Fix a case where if a client had two different leases the server could | |
1409 | actually dereference the second one when it hadn't been referenced, | |
1410 | leading to memory corruption and a core dump. (James Brister) | |
1411 | ||
1412 | - Fix a case where a client could request the address of another client's | |
1413 | lease, but find_lease wouldn't detect that the other client had it, and | |
1414 | would attempt to allocate it to the client, resulting in a lease conflict | |
1415 | message. | |
1416 | ||
1417 | - Fix a case where a client with more than one client identifier could be | |
1418 | given a lease where the hardware address was correct but the client | |
1419 | identifier was not, resulting in a lease conflict message. | |
1420 | ||
1421 | - Fix a problem where the server could write out a colon-separated | |
1422 | hex list as a value for a variable, which would then not parse. | |
1423 | The fix is to always write strings as quoted strings, with any | |
1424 | non-printable characters quoted as octal escape sequences. So | |
1425 | a file written the old way still won't work, but new files written | |
1426 | this way will work. | |
1427 | ||
1428 | - Fix documentation for sending non-standard options. | |
1429 | ||
1430 | - Use unparsable names for unknown options. WARNING: this will | |
1431 | break any configuration files that use the option-nnn convention. | |
1432 | If you want to continue to use this convention for some options, | |
1433 | please be sure to write a definition, like this: | |
1434 | ||
1435 | option option-nnn code nnn = string; | |
1436 | ||
1437 | You can use a descriptive name instead of option-nnn if you like. | |
1438 | ||
1439 | - Fix a problem where we would see a DHCPDISCOVER/DHCPOFFER/ | |
1440 | DHCPREQUEST/DHCPACK/DHCPREQUEST/DHCPNAK sequence. This was the | |
1441 | result of a deceptively silly bug in supersede_lease. | |
1442 | ||
1443 | - Fix client script exit status check, according to a fix supplied by | |
1444 | Hermann Lauer. | |
1445 | ||
1446 | - Fix an endianness bug in the tracefile support, regarding ICMP | |
1447 | messages. | |
1448 | ||
1449 | - Fix a bug in the client where the medium would not work correctly if | |
1450 | it contained quoted strings. | |
1451 | ||
1452 | ** there was no pl17 ** | |
1453 | ||
1454 | Changes since 3.0 Beta 2 Patchlevel 16 | |
1455 | ||
1456 | - Add support for transaction tracing. This allows the state of the | |
1457 | DHCP server on startup, and all the subsequent transactions, to be | |
1458 | recorded in a file which can then be played back to reproduce the | |
1459 | behaviour of the DHCP server. This can be used to quickly | |
1460 | reproduce bugs that cause core dumps or corruption, and also for | |
1461 | tracking down memory leaks. | |
1462 | ||
1463 | - Incorporate some bug fixes provided by Joost Mulders for the DLPI | |
1464 | package which should clear up problems people have been seeing on | |
1465 | Solaris. | |
1466 | ||
1467 | - Fix bugs in the handling of options stored as linked lists (agent | |
1468 | options, fqdn options and nwip options) that could cause memory | |
1469 | corruption and core dumps. | |
1470 | ||
1471 | - Fix a bug in DHCPREQUEST handling that resulted in DHCPNAK messages | |
1472 | not being send in some cases when they were needed. | |
1473 | ||
1474 | - Make the lease structure somewhat more compact. | |
1475 | ||
1476 | - Make initial failover startup *much* faster. This was researched | |
1477 | and implemented by Damien Neil. | |
1478 | ||
1479 | - Add a --version flag to all executables, which prints the program | |
1480 | name and version to standard output. | |
1481 | ||
1482 | - Don't rewrite the lease file every thousand leases. | |
1483 | ||
1484 | - A bug in nit.c for older SunOS machines was fixed by a patch sent in | |
1485 | by Takeshi Hagiwara. | |
1486 | ||
1487 | - Fix a memory corruption bug in the DHCP client. | |
1488 | ||
1489 | - Lots of documentation updates. | |
1490 | ||
1491 | - Add a feature allowing environment variables to be passed to the | |
1492 | DHCP client script on the DHCP client command line. | |
1493 | ||
1494 | - Fix client medium support, which had been broken for some time. | |
1495 | ||
1496 | - Fix a bug in the DHCP client initial startup backoff interval, which | |
1497 | would cause two DHCPDISCOVERS to be sent back-to-back on startup. | |
1498 | ||
1499 | ||
1500 | Changes since 3.0 Beta 2 Patchlevel 15 | |
1501 | ||
1502 | - Some documentation tweaks. | |
1503 | ||
1504 | - Maybe fix a problem in the DLPI code. | |
1505 | ||
1506 | - Fix some error code space inconsistencies in ddns update code. | |
1507 | ||
1508 | - Support relay agents that intercept unicast DHCP messages to stuff | |
1509 | agent options into them. | |
1510 | ||
1511 | - Fix a small memory leak in the relay agent option support code. | |
1512 | ||
1513 | - Fix a core dump that would occur if a packet was sent with no | |
1514 | options. | |
1515 | ||
1516 | Changes since 3.0 Beta 2 Patchlevel 14 | |
1517 | ||
1518 | - Finish fixing a long-standing bug in the agent options code. This | |
1519 | was causing core dumps and failing to operate correctly - in | |
1520 | particular, agent option stashing wasn't working. Agent option | |
1521 | stashing should now be working, meaning that agent options can be | |
1522 | used in class statements to control address allocation. | |
1523 | ||
1524 | - Fix up documentation. | |
1525 | ||
1526 | - Fix a couple of small memory leaks that would have added up | |
1527 | significantly in a high-demand situation. | |
1528 | ||
1529 | - Add a log-facility configuration parameter. | |
1530 | ||
1531 | - Fix a compile error on some older operating systems. | |
1532 | ||
1533 | - Add the ability in the client to execute certain statements before | |
1534 | transmitting packets to the server. Handy for debugging; not much | |
1535 | practical use otherwise. | |
1536 | ||
1537 | - Don't send faked-out giaddr when renewing or bound - again, useful | |
1538 | for debugging. | |
1539 | ||
1540 | Changes since 3.0 Beta 2 Patchlevel 13 | |
1541 | ||
1542 | - Fixed a problem where the fqdn decoder would sometimes try to store | |
1543 | an option with an (unsigned) negative length, resulting in a core | |
1544 | dump on some systems. | |
1545 | ||
1546 | - Work around the Win98 DHCP client, which NUL-terminates the FQDN | |
1547 | option. | |
1548 | ||
1549 | - Work around Win98 and Win2k clients that will claim they want to do | |
1550 | the update even when they don't have any way to do it. | |
1551 | ||
1552 | - Fix some log messages that can be printed when failover is operating | |
1553 | that were not printing enough information. | |
1554 | ||
1555 | - It was possible for a DHCPDISCOVER to get an allocation even when | |
1556 | the state machine said the server shouldn't be responding. | |
1557 | ||
1558 | - Don't load balance DHCPREQUESTs from clients in RENEWING and | |
1559 | REBINDING, since in RENEWING, if we heard it, it's for us, and in | |
1560 | REBINDING, the client wouldn't have got to REBINDING if its primary | |
1561 | were answering. | |
1562 | ||
1563 | - When we get a bogus state lease binding state transition, don't do | |
1564 | the transition. | |
1565 | ||
1566 | ||
1567 | Changes since 3.0 Beta 2 Patchlevel 12 | |
1568 | ||
1569 | - Fixed a couple of silly compile errors. | |
1570 | ||
1571 | Changes since 3.0 Beta 2 Patchlevel 11 | |
1572 | ||
1573 | - Albert Herranz tracked down and fixed a subtle bug in the base64 | |
1574 | decoder that would prevent any key with an 'x' in its base64 | |
1575 | representation from working correctly. | |
1576 | ||
1577 | - Thanks to Chris Cheney and Michael Sanders, we have a fix for the | |
1578 | hang that they both spotted in the DHCP server - when | |
1579 | one-lease-per-client was set, the code to release the "other" lease | |
1580 | could spin. | |
1581 | ||
1582 | - Fix a problem with alignment of the input buffer in bpf in cases | |
1583 | where two packets arrive in the same bpf read. | |
1584 | ||
1585 | - Fix a problem where the relay agent would crash if you specified an | |
1586 | interface name on the command line. | |
1587 | ||
1588 | - Add the ability to conditionalize client behaviour based on the | |
1589 | client state. | |
1590 | ||
1591 | - Add support for the FQDN option, and added support for a new way of | |
1592 | doing ddns updates (ddns update style interim) that allows more than | |
1593 | one DHCP server to update the DNS for the same network(s). This | |
1594 | was implemented by Damien Neil with some additional functionality | |
1595 | added by Ted Lemon. | |
1596 | ||
1597 | - Damien added a "log" statement, so that the configuration file can | |
1598 | be made to log debugging information and other information. | |
1599 | ||
1600 | - Fixed a bug that caused option buffers not to be terminated with an | |
1601 | end option. | |
1602 | ||
1603 | - Fixed a long-standing bug in the support for option spaces where the | |
1604 | options are stored as an ordered list rather than in a hash table, | |
1605 | which could theoretically result in memory pool corruption. | |
1606 | ||
1607 | - Prevent hardware declarations with no actual hardware address from | |
1608 | being written as something unparsable, and behave correctly in the | |
1609 | face of a null hardware address on input. | |
1610 | ||
1611 | - Allow key names to be FQDNs, and qualify the algorithm name if it is | |
1612 | specified unqualified. | |
1613 | ||
1614 | - Modify the DDNS update code so that it never prints the "resolver | |
1615 | failed" message, but instead says *why* the resolver failed. | |
1616 | ||
1617 | - Officially support the subnet selection option, which now has an | |
1618 | RFC. | |
1619 | ||
1620 | - Fix a build bug on MacOS X. | |
1621 | ||
1622 | - Allow administrator to disable ping checking. | |
1623 | ||
1624 | - Clean up dhcpd.conf documentation and add more information about how | |
1625 | it works. | |
1626 | ||
1627 | Changes since 3.0 Beta 2 Patchlevel 10 | |
1628 | ||
1629 | - Fix a bug introduced during debugging (!) and accidentally committed | |
1630 | to CVS. | |
1631 | ||
1632 | Changes since 3.0 Beta 2 Patchlevel 9 | |
1633 | ||
1634 | - Fix DHCP client handling of vendor encapsulated options. | |
1635 | ||
1636 | - Fix a bug in the handling of relay agent information options introduced | |
1637 | in patchlevel 9. | |
1638 | ||
1639 | - Stash agent options on client leases by default, and use the stashed | |
1640 | options at renewal time. | |
1641 | ||
1642 | - Add the ability to test the client's binding state in the client | |
1643 | configuration language. | |
1644 | ||
1645 | - Fix a core dump in the DNS update code. | |
1646 | ||
1647 | - Fix some expression evaluation bugs that were causing updates to be | |
1648 | done when no client hostname was received. | |
1649 | ||
1650 | - Fix expression evaluation debugging printfs. | |
1651 | ||
1652 | - Teach pretty_print_option to print options in option spaces other than | |
1653 | the DHCP option space. | |
1654 | ||
1655 | - Add a warning message if the RHS of a not is not boolean. | |
1656 | ||
1657 | - Never select for more than a day, because some implementations of | |
1658 | select will just fail if the timeout is too long (!). | |
1659 | ||
1660 | - Fix a case where a DHCPDISCOVER from an unknown network would be | |
1661 | silently dropped. | |
1662 | ||
1663 | - Fix a bug where if a client requested an IP address for which a different | |
1664 | client had the lease, the DHCP server would reallocate it anyway. | |
1665 | ||
1666 | - Fix the DNS update code so that if the client changes its name, the DNS | |
1667 | will be correctly updated. | |
1668 | ||
1669 | Changes since 3.0 Beta 2 Patchlevel 8 | |
1670 | ||
1671 | - Oops, there was another subtle math error in the header-length | |
1672 | bounds-checking. | |
1673 | ||
1674 | Changes since 3.0 Beta 2 Patchlevel 7 | |
1675 | ||
1676 | - Oops, forgot to byte-swap udp header length before bounds-checking it. | |
1677 | ||
1678 | Changes since 3.0 Beta 2 Patchlevel 6 | |
1679 | ||
1680 | - Fix a possible DoS attack where a client could cause the checksummer | |
1681 | to dump core. This was a read, not a write, so it shouldn't be | |
1682 | possible to exploit it any further than that. | |
1683 | ||
1684 | - Implement client- and server-side support for using the Client FQDN | |
1685 | option. | |
1686 | ||
1687 | - Support for other option spaces in the client has been added. This | |
1688 | means that it is now possible to define a vendor option space on the | |
1689 | client, request options in that space from the server (which must | |
1690 | define the same option space), and then use those options in the | |
1691 | client. This also allows NWIP and Client FQDN options to be used | |
1692 | meaningfully. | |
1693 | ||
1694 | - Add object initializer support. This means that objects can now be | |
1695 | initialized to something other than all-zeros when allocated, which | |
1696 | makes, e.g., the interface object support code a little more robust. | |
1697 | ||
1698 | - Fix an off-by-one bug in the host stuffer. This was causing host | |
1699 | deletes not the work, and may also have been causing OMAPI | |
1700 | connections to get dropped. Thanks to James Brister for tracking | |
1701 | this one down! | |
1702 | ||
1703 | - Fixed a core dump in the interface discovery code that is triggered | |
1704 | when there is no subnet declaration for an interface, but the server | |
1705 | decides to continue running. Thanks to Shane Kerr for tracking | |
1706 | down and fixing this problem. | |
1707 | ||
1708 | Changes since 3.0 Beta 2 Patchlevel 5 | |
1709 | ||
1710 | - Fix a bug in the recent enhancement to the interface discovery code | |
1711 | to support arbitrary-length interface lists. | |
1712 | ||
1713 | - Support NUL-terminated DHCP options when initializing client-script | |
1714 | environment. | |
1715 | ||
1716 | - Fix suffix operator. | |
1717 | ||
1718 | - Fix NetWare/IP option parsing. | |
1719 | ||
1720 | - Better error/status checking in dhcpctl initialization and omapi | |
1721 | connection code. | |
1722 | ||
1723 | - Fix a potential memory smash in dhcpctl code. | |
1724 | ||
1725 | - Fix SunOS4 and (maybe) Ultrix builds. | |
1726 | ||
1727 | - Fix a bug where a certain sort of incoming packet could cause a core | |
1728 | dump on Solaris (and probably elsewhere). | |
1729 | ||
1730 | - Add some more safety checks in error logging code. | |
1731 | ||
1732 | - Add support for ISC_R_INCOMPLETE in OMAPI protocol connection code. | |
1733 | ||
1734 | - Fix relay agent so that if an interface is specified on the command | |
1735 | line, the relay agent does not dump core. | |
1736 | ||
1737 | - Fix class matching so that match if can be combined with match or | |
1738 | spawn with. | |
1739 | ||
1740 | - Do not allow spurious leases in the lease database to introduce | |
1741 | potentially bogus leases into the in-memory database. | |
1742 | ||
1743 | - Fix a byte-order problem in the client hardware address type code | |
1744 | for OMAPI. | |
1745 | ||
1746 | - Be slightly less picky about what sort of hardware addresses OMAPI | |
1747 | can install in host declarations. | |
1748 | ||
1749 | Changes since 3.0 Beta 2 Patchlevel 4 | |
1750 | ||
1751 | - Incorporated Peter Marschall's proposed change to array/record | |
1752 | parsing, which allows things like the slp-agent option to be encoded | |
1753 | correctly. Thanks very much to Peter for taking the initiative to | |
1754 | do this, and for doing such a careful job of it (e.g., updating the | |
1755 | comments)! | |
1756 | ||
1757 | - Added an encoding for the slp-agent option. :') | |
1758 | ||
1759 | - Fixed SunOS 4 build. Thanks to Robert Elz for responding to my | |
1760 | request for help on this with patches! | |
1761 | ||
1762 | - Incorporated a change that should fix a problem reported by Philippe | |
1763 | Jumelle where when the network connection between two servers is | |
1764 | lost, they never reconnect. | |
1765 | ||
1766 | - Fix client script files other than that for NetBSD to actually use | |
1767 | make_resolv_conf as documented in the manual page. | |
1768 | ||
1769 | - Fix a bug in the packet handling code that could result in a core | |
1770 | dump. | |
1771 | ||
1772 | - Fix a bug in the bootp code where responses on the local net would | |
1773 | be sent to the wrong MAC address. Thanks to Jerry Schave for | |
1774 | catching this one. | |
1775 | ||
1776 | Changes since 3.0 Beta 2 Patchlevel 3 | |
1777 | ||
1778 | - In the DHCP client, execute client statements prior to using the values | |
1779 | of options, so that the client configuration can overried, e.g., the | |
1780 | lease renewal time. | |
1781 | ||
1782 | - Fix a reference counting error that would result in very reproducible | |
1783 | failures in updates, as well as occasional core dumps, if a zone was | |
1784 | declared without a key. | |
1785 | ||
1786 | - Fix some Linux 2.0 compilation problems. | |
1787 | ||
1788 | - Fix a bug in scope evaluation during execution of "on" statements that | |
1789 | caused values not to be recorded on leases. | |
1790 | ||
1791 | - If the dhcp-max-message-size option is specified in scope, and the | |
1792 | client didn't send this option, use the one specified in scope to | |
1793 | determine the maximum size of the response. | |
1794 | ||
1795 | Changes since 3.0 Beta 2 Patchlevel 2 | |
1796 | ||
1797 | - Fix a case where spawning subclasses were being allocated | |
1798 | incorrectly, resulting in a core dump. | |
1799 | ||
1800 | - Fix a case where the DHCP server might inappropriately NAK a | |
1801 | RENEWING client. | |
1802 | ||
1803 | - Fix a place dhcprequest() where static leases could leak. | |
1804 | ||
1805 | - Include memory.h in omapip_p.h so that we don't get warnings about | |
1806 | using memcmp(). | |
1807 | ||
1808 | Changes since 3.0 Beta 2 Patchlevel 1 | |
1809 | ||
1810 | - Notice when SIOCFIGCONF returns more data than fit in the buffer - | |
1811 | allocate a larger buffer, and retry. Thanks to Greg Fausak for | |
1812 | pointing this out. | |
1813 | ||
1814 | - In the server, if no interfaces were configured, report an error and | |
1815 | exit. | |
1816 | ||
1817 | - Don't ever record a state of 'startup'. | |
1818 | ||
1819 | - Don't try to evaluate the local failover binding address if none was | |
1820 | specified. Thanks to Joseph Breu for finding this. |