2 Fix crash at startup when an empty suffix is supplied to
3 --conf-dir, also trivial memory leak. Thanks to
4 Tomas Hozza for spotting this.
6 Remove floor of 4096 on advertised EDNS0 packet size when
7 DNSSEC in use, the original rationale for this has long gone.
8 Thanks to Anders Kaseorg for spotting this.
10 Use inotify for checking on updates to /etc/resolv.conf and
11 friends under Linux. This fixes race conditions when the files are
12 updated rapidly and saves CPU by noy polling. To build
13 a binary that runs on old Linux kernels without inotify,
14 use make COPTS=-DNO_INOTIFY
16 Fix breakage of --domain=<domain>,<subnet>,local - only reverse
17 queries were intercepted. THis appears to have been broken
18 since 2.69. Thanks to Josh Stone for finding the bug.
20 Eliminate IPv6 privacy addresses and deprecated addresses from
21 the answers given by --interface-name. Note that reverse queries
22 (ie looking for names, given addresses) are not affected.
23 Thanks to Michael Gorbach for the suggestion.
25 Fix crash in DNSSEC code with long RRs. Thanks to Marco Davids
28 Add --ignore-address option. Ignore replies to A-record
29 queries which include the specified address. No error is
30 generated, dnsmasq simply continues to listen for another
31 reply. This is useful to defeat blocking strategies which
32 rely on quickly supplying a forged answer to a DNS
33 request for certain domains, before the correct answer can
34 arrive. Thanks to Glen Huang for the patch.
36 Revisit the part of DNSSEC validation which determines if an
37 unsigned answer is legit, or is in some part of the DNS
38 tree which should be signed. Dnsmasq now works from the
39 DNS root downward looking for the limit of signed
40 delegations, rather than working bottom up. This is
41 both more correct, and less likely to trip over broken
42 nameservers in the unsigned parts of the DNS tree
43 which don't respond well to DNSSEC queries.
45 Add --log-queries=extra option, which makes logs easier
46 to search automatically.
48 Add --min-cache-ttl option. I've resisted this for a long
49 time, on the grounds that disbelieving TTLs is never a
50 good idea, but I've been persuaded that there are
51 sometimes reasons to do it. (Step forward, GFW).
52 To avoid misuse, there's a hard limit on the TTL
53 floor of one hour. Thansk to RinSatsuki for the patch.
55 Cope with multiple interfaces with the same link-local
56 address. (IPv6 addresses are scoped, so this is allowed.)
57 Thanks to Cory Benfield for help with this.
59 Add --dhcp-hostsdir. This allows addition of new host
60 configurations to a running dnsmasq instance much more
61 cheaply than having dnsmasq re-read all its existing
62 configuration each time.
64 Don't reply to DHCPv6 SOLICIT messages if we're not
65 configured to do stateful DHCPv6. Thanks to Win King Wan
68 Fix broken DNSSEC validation of ECDSA signatures.
70 Add --dnssec-timestamp option, which provides an automatic
71 way to detect when the system time becomes valid after
72 boot on systems without an RTC, whilst allowing DNS
73 queries before the clock is valid so that NTP can run.
74 Thanks to Kevin Darbyshire-Bryant for developing this idea.
76 Add --tftp-no-fail option. Thanks to Stefan Tomanek for
79 Fix crash caused by looking up servers.bind, CHAOS text
80 record, when more than about five --servers= lines are
81 in the dnsmasq config. This causes memory corruption
82 which causes a crash later. Thanks to Matt Coddington for
83 sterling work chasing this down.
85 Fix crash on receipt of certain malformed DNS requests.
86 Thanks to Nick Sampanis for spotting the problem.
87 Note that this is could allow the dnsmasq process's
88 memory to be read by an attacker under certain
89 circumstances, so it has a CVE, CVE-2015-3294
91 Fix crash in authoritative DNS code, if a .arpa zone
92 is declared as authoritative, and then a PTR query which
93 is not to be treated as authoritative arrived. Normally,
94 directly declaring .arpa zone as authoritative is not
95 done, so this crash wouldn't be seen. Instead the
96 relevant .arpa zone should be specified as a subnet
97 in the auth-zone declaration. Thanks to Johnny S. Lee
98 for the bugreport and initial patch.
100 Fix authoritative DNS code to correctly reply to NS
101 and SOA queries for .arpa zones for which we are
102 declared authoritative by means of a subnet in auth-zone.
103 Previously we provided correct answers to PTR queries
104 in such zones (including NS and SOA) but not direct
105 NS and SOA queries. Thanks to Johnny S. Lee for
106 pointing out the problem.
108 Fix logging of DHCPREPLY which should be suppressed
109 by quiet-dhcp6. Thanks to J. Pablo Abonia for
110 spotting the problem.
114 Add ra-advrouter mode, for RFC-3775 mobile IPv6 support.
116 Add support for "ipsets" in *BSD, using pf. Thanks to
117 Sven Falempim for the patch.
119 Fix race condition which could lock up dnsmasq when an
120 interface goes down and up rapidly. Thanks to Conrad
121 Kostecki for helping to chase this down.
123 Add DBus methods SetFilterWin2KOption and SetBogusPrivOption
124 Thanks to the Smoothwall project for the patch.
126 Fix failure to build against Nettle-3.0. Thanks to Steven
127 Barth for spotting this and finding the fix.
129 When assigning existing DHCP leases to intefaces by comparing
130 networks, handle the case that two or more interfaces have the
131 same network part, but different prefix lengths (favour the
132 longer prefix length.) Thanks to Lung-Pin Chang for the
135 Add a mode which detects and removes DNS forwarding loops, ie
136 a query sent to an upstream server returns as a new query to
137 dnsmasq, and would therefore be forwarded again, resulting in
138 a query which loops many times before being dropped. Upstream
139 servers which loop back are disabled and this event is logged.
140 Thanks to Smoothwall for their sponsorship of this feature.
142 Extend --conf-dir to allow filtering of files. So
143 --conf-dir=/etc/dnsmasq.d,\*.conf
144 will load all the files in /etc/dnsmasq.d which end in .conf
146 Fix bug when resulted in NXDOMAIN answers instead of NODATA in
149 Fix bug which caused dnsmasq to become unresponsive if it
150 failed to send packets due to a network interface disappearing.
151 Thanks to Niels Peen for spotting this.
153 Fix problem with --local-service option on big-endian platforms
154 Thanks to Richard Genoud for the patch.
158 Subtle change to error handling to help DNSSEC validation
159 when servers fail to provide NODATA answers for
160 non-existent DS records.
162 Tweak code which removes DNSSEC records from answers when
163 not required. Fixes broken answers when additional section
164 has real records in it. Thanks to Marco Davids for the bug
167 Fix DNSSEC validation of ANY queries. Thanks to Marco Davids
168 for spotting that too.
170 Fix total DNS failure and 100% CPU use if cachesize set to zero,
171 regression introduced in 2.69. Thanks to James Hunt and
172 the Ubuntu crowd for assistance in fixing this.
176 Fix crash, introduced in 2.69, on TCP request when dnsmasq
177 compiled with DNSSEC support, but running without DNSSEC
178 enabled. Thanks to Manish Sing for spotting that one.
180 Fix regression which broke ipset functionality. Thanks to
181 Wang Jian for the bug report.
185 Implement dynamic interface discovery on *BSD. This allows
186 the contructor: syntax to be used in dhcp-range for DHCPv6
187 on the BSD platform. Thanks to Matthias Andree for
188 valuable research on how to implement this.
190 Fix infinite loop associated with some --bogus-nxdomain
191 configs. Thanks fogobogo for the bug report.
193 Fix missing RA RDNS option with configuration like
194 --dhcp-option=option6:23,[::] Thanks to Tsachi Kimeldorfer
195 for spotting the problem.
197 Add [fd00::] and [fe80::] as special addresses in DHCPv6
198 options, analogous to [::]. [fd00::] is replaced with the
199 actual ULA of the interface on the machine running
200 dnsmasq, [fe80::] with the link-local address.
201 Thanks to Tsachi Kimeldorfer for championing this.
203 DNSSEC validation and caching. Dnsmasq needs to be
204 compiled with this enabled, with
206 make dnsmasq COPTS=-DHAVE_DNSSEC
208 this add dependencies on the nettle crypto library and the
209 gmp maths library. It's possible to have these linked
212 make dnsmasq COPTS='-DHAVE_DNSSEC -DHAVE_DNSSEC_STATIC'
214 which bloats the dnsmasq binary, but saves the size of
215 the shared libraries which are much bigger.
217 To enable, DNSSEC, you will need a set of
218 trust-anchors. Now that the TLDs are signed, this can be
219 the keys for the root zone, and for convenience they are
220 included in trust-anchors.conf in the dnsmasq
221 distribution. You should of course check that these are
222 legitimate and up-to-date. So, adding
224 conf-file=/path/to/trust-anchors.conf
227 to your config is all thats needed to get things
228 working. The upstream nameservers have to be DNSSEC-capable
229 too, of course. Many ISP nameservers aren't, but the
230 Google public nameservers (8.8.8.8 and 8.8.4.4) are.
231 When DNSSEC is configured, dnsmasq validates any queries
232 for domains which are signed. Query results which are
233 bogus are replaced with SERVFAIL replies, and results
234 which are correctly signed have the AD bit set. In
235 addition, and just as importantly, dnsmasq supplies
236 correct DNSSEC information to clients which are doing
237 their own validation, and caches DNSKEY, DS and RRSIG
238 records, which significantly improve the performance of
239 downstream validators. Setting --log-queries will show
242 If a domain is returned from an upstream nameserver without
243 DNSSEC signature, dnsmasq by default trusts this. This
244 means that for unsigned zone (still the majority) there
245 is effectively no cost for having DNSSEC enabled. Of course
246 this allows an attacker to replace a signed record with a
247 false unsigned record. This is addressed by the
248 --dnssec-check-unsigned flag, which instructs dnsmasq
249 to prove that an unsigned record is legitimate, by finding
250 a secure proof that the zone containing the record is not
251 signed. Doing this has costs (typically one or two extra
252 upstream queries). It also has a nasty failure mode if
253 dnsmasq's upstream nameservers are not DNSSEC capable.
254 Without --dnssec-check-unsigned using such an upstream
255 server will simply result in not queries being validated;
256 with --dnssec-check-unsigned enabled and a
257 DNSSEC-ignorant upstream server, _all_ queries will fail.
259 Note that DNSSEC requires that the local time is valid and
260 accurate, if not then DNSSEC validation will fail. NTP
261 should be running. This presents a problem for routers
262 without a battery-backed clock. To set the time needs NTP
263 to do DNS lookups, but lookups will fail until NTP has run.
264 To address this, there's a flag, --dnssec-no-timecheck
265 which disables the time checks (only) in DNSSEC. When dnsmasq
266 is started and the clock is not synced, this flag should
267 be used. As soon as the clock is synced, SIGHUP dnsmasq.
268 The SIGHUP clears the cache of partially-validated data and
269 resets the no-timecheck flag, so that all DNSSEC checks
270 henceforward will be complete.
272 The development of DNSSEC in dnsmasq was started by
273 Giovanni Bajo, to whom huge thanks are owed. It has been
274 supported by Comcast, whose techfund grant has allowed for
275 an invaluable period of full-time work to get it to
278 Add --rev-server. Thanks to Dave Taht for suggesting this.
280 Add --servers-file. Allows dynamic update of upstream servers
281 full access to configuration.
283 Add --local-service. Accept DNS queries only from hosts
284 whose address is on a local subnet, ie a subnet for which
285 an interface exists on the server. This option
286 only has effect if there are no --interface --except-interface,
287 --listen-address or --auth-server options. It is intended
288 to be set as a default on installation, to allow
289 unconfigured installations to be useful but also safe from
290 being used for DNS amplification attacks.
292 Fix crashes in cache_get_cname_target() when dangling CNAMEs
293 encountered. Thanks to Andy and the rt-n56u project for
294 find this and helping to chase it down.
296 Fix wrong RCODE in authoritative DNS replies to PTR queries. The
297 correct answer was included, but the RCODE was set to NXDOMAIN.
298 Thanks to Craig McQueen for spotting this.
300 Make statistics available as DNS queries in the .bind TLD as
301 well as logging them.
305 Use random addresses for DHCPv6 temporary address
306 allocations, instead of algorithmically determined stable
309 Fix bug which meant that the DHCPv6 DUID was not available
310 in DHCP script runs during the lifetime of the dnsmasq
311 process which created the DUID de-novo. Once the DUID was
312 created and stored in the lease file and dnsmasq
313 restarted, this bug disappeared.
315 Fix bug introduced in 2.67 which could result in erroneous
316 NXDOMAIN returns to CNAME queries.
318 Fix build failures on MacOS X and openBSD.
320 Allow subnet specifications in --auth-zone to be interface
321 names as well as address literals. This makes it possible
322 to configure authoritative DNS when local address ranges
323 are dynamic and works much better than the previous
324 work-around which exempted contructed DHCP ranges from the
325 IP address filtering. As a consequence, that work-around
326 is removed. Under certain circumstances, this change wil
327 break existing configuration: if you're relying on the
328 contructed-range exception, you need to change --auth-zone
329 to specify the same interface as is used to construct your
330 DHCP ranges, probably with a trailing "/6" like this:
331 --auth-zone=example.com,eth0/6 to limit the addresses to
332 IPv6 addresses of eth0.
334 Fix problems when advertising deleted IPv6 prefixes. If
335 the prefix is deleted (rather than replaced), it doesn't
336 get advertised with zero preferred time. Thanks to Tsachi
339 Fix segfault with some locally configured CNAMEs. Thanks
340 to Andrew Childs for spotting the problem.
342 Fix memory leak on re-reading /etc/hosts and friends,
345 Check the arrival interface of incoming DNS and TFTP
346 requests via IPv6, even in --bind-interfaces mode. This
347 isn't possible for IPv4 and can generate scary warnings,
348 but as it's always possible for IPv6 (the API always
349 exists) then we should do it always.
351 Tweak the rules on prefix-lengths in --dhcp-range for
352 IPv6. The new rule is that the specified prefix length
353 must be larger than or equal to the prefix length of the
354 corresponding address on the local interface.
358 Fix crash if upstream server returns SERVFAIL when
359 --conntrack in use. Thanks to Giacomo Tazzari for finding
360 this and supplying the patch.
362 Repair regression in 2.64. That release stopped sending
363 lease-time information in the reply to DHCPINFORM
364 requests, on the correct grounds that it was a standards
365 violation. However, this broke the dnsmasq-specific
366 dhcp_lease_time utility. Now, DHCPINFORM returns
367 lease-time only if it's specifically requested
368 (maintaining standards) and the dhcp_lease_time utility
369 has been taught to ask for it (restoring functionality).
371 Fix --dhcp-match, --dhcp-vendorclass and --dhcp-userclass
372 to work with BOOTP and well as DHCP. Thanks to Peter
373 Korsgaard for spotting the problem.
375 Add --synth-domain. Thanks to Vishvananda Ishaya for
378 Fix failure to compile ipset.c if old kernel headers are
379 in use. Thanks to Eugene Rudoy for pointing this out.
381 Handle IPv4 interface-address labels in Linux. These are
382 often used to emulate the old IP-alias addresses. Before,
383 using --interface=eth0 would service all the addresses of
384 eth0, including ones configured as aliases, which appear
385 in ifconfig as eth0:0. Now, only addresses with the label
386 eth0 are active. This is not backwards compatible: if you
387 want to continue to bind the aliases too, you need to add
388 eg. --interface=eth0:0 to the config.
390 Fix "failed to set SO_BINDTODEVICE on DHCP socket: Socket
391 operation on non-socket" error on startup with
392 configurations which have exactly one --interface option
393 and do RA but _not_ DHCPv6. Thanks to Trever Adams for the
396 Generalise --interface-name to cope with IPv6 addresses
397 and multiple addresses per interface per address family.
399 Fix option parsing for --dhcp-host, which was generating a
400 spurious error when all seven possible items were
401 included. Thanks to Zhiqiang Wang for the bug report.
403 Remove restriction on prefix-length in --auth-zone. Thanks
404 to Toke Hoiland-Jorgensen for suggesting this.
406 Log when the maximum number of concurrent DNS queries is
407 reached. Thanks to Marcelo Salhab Brogliato for the patch.
409 If wildcards are used in --interface, don't assume that
410 there will only ever be one available interface for DHCP
411 just because there is one at start-up. More may appear, so
412 we can't use SO_BINDTODEVICE. Thanks to Natrio for the bug
415 Increase timeout/number of retries in TFTP to accomodate
416 AudioCodes Voice Gateways doing streaming writes to flash.
417 Thanks to Damian Kaczkowski for spotting the problem.
419 Fix crash with empty DHCP string options when adding zero
420 terminator. Thanks to Patrick McLean for the bug report.
422 Allow hostnames to start with a number, as allowed in
423 RFC-1123. Thanks to Kyle Mestery for the patch.
425 Fixes to DHCP FQDN option handling: don't terminate FQDN
426 if domain not known and allow a FQDN option with blank
427 name to request that a FQDN option is returned in the
428 reply. Thanks to Roy Marples for the patch.
430 Make --clear-on-reload apply to setting upstream servers
433 When the address which triggered the construction of an
434 advertised IPv6 prefix disappears, continue to advertise
435 the prefix for up to 2 hours, with the preferred lifetime
436 set to zero. This satisfies RFC 6204 4.3 L-13 and makes
437 things work better if a prefix disappears without being
438 deprecated first. Thanks to Uwe Schindler for persuasively
441 Fix MAC address enumeration on *BSD. Thanks to Brad Smith
444 Support RFC-4242 information-refresh-time options in the
445 reply to DHCPv6 information-request. The lease time of the
446 smallest valid dhcp-range is sent. Thanks to Uwe Schindler
449 Make --listen-address higher priority than --except-interface
450 in all circumstances. Thanks to Thomas Hood for the bugreport.
452 Provide independent control over which interfaces get TFTP
453 service. If enable-tftp is given a list of interfaces, then TFTP
454 is provided on those. Without the list, the previous behaviour
455 (provide TFTP to the same interfaces we provide DHCP to)
456 is retained. Thanks to Lonnie Abelbeck for the suggestion.
458 Add --dhcp-relay config option. Many thanks to vtsl.net
459 for sponsoring this development.
461 Fix crash with empty tag: in --dhcp-range. Thanks to
462 Kaspar Schleiser for the bug report.
464 Add "baseline" and "bloatcheck" makefile targets, for
465 revealing size changes during development. Thanks to
466 Vladislav Grishenko for the patch.
468 Cope with DHCPv6 clients which send REQUESTs without
469 address options - treat them as SOLICIT with rapid commit.
471 Support identification of clients by MAC address in
472 DHCPv6. When using a relay, the relay must support RFC
473 6939 for this to work. It always works for directly
474 connected clients. Thanks to Vladislav Grishenko
475 for prompting this feature.
477 Remove the rule for constructed DHCP ranges that the local
478 address must be either the first or last address in the
479 range. This was originally to avoid SLAAC addresses, but
480 we now explicitly autoconfig and privacy addresses instead.
482 Update Polish translation. Thanks to Jan Psota.
484 Fix problem in DHCPv6 vendorclass/userclass matching
485 code. Thanks to Tanguy Bouzeloc for the patch.
487 Update Spanish transalation. Thanks to Vicente Soriano.
489 Add --ra-param option. Thanks to Vladislav Grishenko for
492 Add --add-subnet configuration, to tell upstream DNS
493 servers where the original client is. Thanks to DNSthingy
494 for sponsoring this feature.
496 Add --quiet-dhcp, --quiet-dhcp6 and --quiet-ra. Thanks to
497 Kevin Darbyshire-Bryant for the initial patch.
499 Allow A/AAAA records created by --interface-name to be the
500 target of --cname. Thanks to Hadmut Danisch for the
503 Avoid treating a --dhcp-host which has an IPv6 address
504 as eligable for use with DHCPv4 on the grounds that it has
505 no address, and vice-versa. Thanks to Yury Konovalov for
506 spotting the problem.
508 Do a better job caching dangling CNAMEs. Thanks to Yves
509 Dorfsman for spotting the problem.
513 Add the ability to act as an authoritative DNS
514 server. Dnsmasq can now answer queries from the wider 'net
515 with local data, as long as the correct NS records are set
516 up. Only local data is provided, to avoid creating an open
517 DNS relay. Zone transfer is supported, to allow secondary
518 servers to be configured.
520 Add "constructed DHCP ranges" for DHCPv6. This is intended
521 for IPv6 routers which get prefixes dynamically via prefix
522 delegation. With suitable configuration, stateful DHCPv6
523 and RA can happen automatically as prefixes are delegated
524 and then deprecated, without having to re-write the
525 dnsmasq configuration file or restart the daemon. Thanks to
526 Steven Barth for extensive testing and development work on
529 Fix crash on startup on Solaris 11. Regression probably
530 introduced in 2.61. Thanks to Geoff Johnstone for the
533 Add code to make behaviour for TCP DNS requests that same
534 as for UDP requests, when a request arrives for an allowed
535 address, but via a banned interface. This change is only
536 active on Linux, since the relevant API is missing (AFAIK)
537 on other platforms. Many thanks to Tomas Hozza for
538 spotting the problem, and doing invaluable discovery of
539 the obscure and undocumented API required for the solution.
541 Don't send the default DHCP option advertising dnsmasq as
542 the local DNS server if dnsmasq is configured to not act
543 as DNS server, or it's configured to a non-standard port.
545 Add DNSMASQ_CIRCUIT_ID, DNSMASQ_SUBCRIBER_ID,
546 DNSMASQ_REMOTE_ID variables to the environment of the
547 lease-change script (and the corresponding Lua). These hold
548 information inserted into the DHCP request by a DHCP relay
549 agent. Thanks to Lakefield Communications for providing a
550 bounty for this addition.
552 Fixed crash, introduced in 2.64, whilst handling DHCPv6
553 information-requests with some common configurations.
554 Thanks to Robert M. Albrecht for the bug report and
557 Add --ipset option. Thanks to Jason A. Donenfeld for the
560 Don't erroneously reject some option names in --dhcp-match
561 options. Thanks to Benedikt Hochstrasser for the bug report.
563 Allow a trailing '*' wildcard in all interface-name
564 configurations. Thanks to Christian Parpart for the patch.
566 Handle the situation where libc headers define
567 SO_REUSEPORT, but the kernel in use doesn't, to cope with
568 the introduction of this option to Linux. Thanks to Rich
569 Felker for the bug report.
571 Update Polish translation. Thanks to Jan Psota.
573 Fix crash if the configured DHCP lease limit is
574 reached. Regression occurred in 2.61. Thanks to Tsachi for
577 Update the French translation. Thanks to Gildas le Nadan.
581 Fix regression which broke forwarding of queries sent via
582 TCP which are not for A and AAAA and which were directed to
583 non-default servers. Thanks to Niax for the bug report.
585 Fix failure to build with DHCP support excluded. Thanks to
586 Gustavo Zacarias for the patch.
588 Fix nasty regression in 2.64 which completely broke cacheing.
592 Handle DHCP FQDN options with all flag bits zero and
593 --dhcp-client-update set. Thanks to Bernd Krumbroeck for
594 spotting the problem.
596 Finesse the check for /etc/hosts names which conflict with
597 DHCP names. Previously a name/address pair in /etc/hosts
598 which didn't match the name/address of a DHCP lease would
599 generate a warning. Now that only happesn if there is not
600 also a match. This allows multiple addresses for a name in
601 /etc/hosts with one of them assigned via DHCP.
603 Fix broken vendor-option processing for BOOTP. Thanks to
604 Hans-Joachim Baader for the bug report.
606 Don't report spurious netlink errors, regression in
607 2.63. Thanks to Vladislav Grishenko for the patch.
609 Flag DHCP or DHCPv6 in starup logging. Thanks to
610 Vladislav Grishenko for the patch.
612 Add SetServersEx method in DBus interface. Thanks to Dan
613 Williams for the patch.
615 Add SetDomainServers method in DBus interface. Thanks to
616 Roy Marples for the patch.
618 Fix build with later Lua libraries. Thansk to Cristian
619 Rodriguez for the patch.
621 Add --max-cache-ttl option. Thanks to Dennis Kaarsemaker
624 Fix breakage of --host-record parsing, resulting in
625 infinte loop at startup. Regression in 2.63. Thanks to
626 Haim Gelfenbeyn for spotting this.
628 Set SO_REUSEADDRESS and SO_V6ONLY options on the DHCPv6
629 socket, this allows multiple instances of dnsmasq on a
630 single machine, in the same way as for DHCPv4. Thanks to
631 Gene Czarcinski and Vladislav Grishenko for work on this.
633 Fix DHCPv6 to do access control correctly when it's
634 configured with --listen-address. Thanks to
635 Gene Czarcinski for sorting this out.
637 Add a "wildcard" dhcp-range which works for any IPv6
638 subnet, --dhcp-range=::,static Useful for Stateless
639 DHCPv6. Thanks to Vladislav Grishenko for the patch.
641 Don't include lease-time in DHCPACK replies to DHCPINFORM
642 queries, since RFC-2131 says we shouldn't. Thanks to
643 Wouter Ibens for pointing this out.
645 Makefile tweak to do dependency checking on header files.
646 Thanks to Johan Peeters for the patch.
648 Check interface for outgoing unsolicited router
649 advertisements, rather than relying on interface address
650 configuration. Thanks to Gene Czarinski for the patch.
652 Handle better attempts to transmit on interfaces which are
653 still doing DAD, and specifically do not just transmit
654 without setting source address and interface, since this
655 can cause very puzzling effects when a router
656 advertisement goes astray. Thanks again to Gene Czarinski.
658 Get RA timers right when there is more than one
659 dhcp-range on a subnet.
663 Do duplicate dhcp-host address check in --test mode.
665 Check that tftp-root directories are accessible before
666 start-up. Thanks to Daniel Veillard for the initial patch.
668 Allow more than one --tfp-root flag. The per-interface
669 stuff is pointless without that.
671 Add --bind-dynamic. A hybrid mode between the default and
672 --bind-interfaces which copes with dynamically created
675 A couple of fixes to the build system for Android. Thanks
676 to Metin Kaya for the patches.
678 Remove the interface:<interface> argument in --dhcp-range, and
679 the interface argument to --enable-tftp. These were a
680 still-born attempt to allow automatic isolated
681 configuration by libvirt, but have never (to my knowledge)
682 been used, had very strange semantics, and have been
683 superceded by other mechanisms.
685 Fixed bug logging filenames when duplicate dhcp-host
686 addresses are found. Thanks to John Hanks for the patch.
688 Fix regression in 2.61 which broke caching of CNAME
689 chains. Thanks to Atul Gupta for the bug report.
691 Allow the target of a --cname flag to be another --cname.
693 Teach DHCPv6 about the RFC 4242 information-refresh-time
694 option, and add parsing if the minutes, hours and days
695 format for options. Thanks to Francois-Xavier Le Bail for
698 Allow "w" (for week) as multiplier in lease times, as well
699 as seconds, minutes, hours and days. Álvaro Gámez Machado
700 spotted the ommission.
702 Update French translation. Thanks to Gildas Le Nadan.
704 Allow a DBus service name to be given with --enable-dbus
705 which overrides the default,
706 uk.org.thekelleys.dnsmasq. Thanks to Mathieu
707 Trudel-Lapierre for the patch.
709 Set the "prefix on-link" bit in Router
710 Advertisements. Thanks to Gui Iribarren for the patch.
714 Update German translation. Thanks to Conrad Kostecki.
716 Cope with router-solict packets wich don't have a valid
717 source address. Thanks to Vladislav Grishenko for the patch.
719 Fixed bug which caused missing periodic router
720 advertisements with some configurations. Thanks to
721 Vladislav Grishenko for the patch.
723 Fixed bug which broke DHCPv6/RA with prefix lengths
724 which are not divisible by 8. Thanks to Andre Coetzee
727 Fix non-response to router-solicitations when
728 router-advertisement configured, but DHCPv6 not
729 configured. Thanks to Marien Zwart for the patch.
731 Add --dns-rr, to allow arbitrary DNS resource records.
733 Fixed bug which broke RA scheduling when an interface had
734 two addresses in the same network. Thanks to Jim Bos for
735 his help nailing this.
738 Re-write interface discovery code on *BSD to use
739 getifaddrs. This is more portable, more straightforward,
740 and allows us to find the prefix length for IPv6
743 Add ra-names, ra-stateless and slaac keywords for DHCPv6.
744 Dnsmasq can now synthesise AAAA records for dual-stack
745 hosts which get IPv6 addresses via SLAAC. It is also now
746 possible to use SLAAC and stateless DHCPv6, and to
747 tell clients to use SLAAC addresses as well as DHCP ones.
748 Thanks to Dave Taht for help with this.
750 Add --dhcp-duid to allow DUID-EN uids to be used.
752 Explicity send DHCPv6 replies to the correct port, instead
753 of relying on clients to send requests with the correct
754 source address, since at least one client in the wild gets
755 this wrong. Thanks to Conrad Kostecki for help tracking
758 Send a preference value of 255 in DHCPv6 replies when
759 --dhcp-authoritative is in effect. This tells clients not
760 to wait around for other DHCP servers.
762 Better logging of DHCPv6 options.
764 Add --host-record. Thanks to Rob Zwissler for the
767 Invoke the DHCP script with action "tftp" when a TFTP file
768 transfer completes. The size of the file, address to which
769 it was sent and complete pathname are supplied. Note that
770 version 2.60 introduced some script incompatibilties
771 associated with DHCPv6, and this is a further change. To
772 be safe, scripts should ignore unknown actions, and if
773 not IPv6-aware, should exit if the environment
774 variable DNSMASQ_IAID is set. The use-case for this is
775 to track netboot/install. Suggestion from Shantanu
778 Update contrib/port-forward/dnsmasq-portforward to reflect
781 Set the environment variable DNSMASQ_LOG_DHCP when running
782 the script id --log-dhcp is in effect, so that script can
783 taylor their logging verbosity. Suggestion from Malte
786 Arrange that addresses specified with --listen-address
787 work even if there is no interface carrying the
788 address. This is chiefly useful for IPv4 loopback
789 addresses, where any address in 127.0.0.0/8 is a valid
790 loopback address, but normally only 127.0.0.1 appears on
791 the lo interface. Thanks to Mathieu Trudel-Lapierre for
792 the idea and initial patch.
794 Fix crash, introduced in 2.60, when a DHCPINFORM is
795 received from a network which has no valid dhcp-range.
796 Thanks to Stephane Glondu for the bug report.
798 Add a new DHCP lease time keyword, "deprecated" for
799 --dhcp-range. This is only valid for IPv6, and sets the
800 preffered lease time for both DHCP and RA to zero. The
801 effect is that clients can continue to use the address
802 for existing connections, but new connections will use
803 other addresses, if they exist. This makes hitless
804 renumbering at least possible.
806 Fix bug in address6_available() which caused DHCPv6 lease
807 aquisition to fail if more than one dhcp-range in use.
809 Provide RDNSS and DNSSL data in router advertisements,
810 using the settings provided for DHCP options
811 option6:domain-search and option6:dns-server.
813 Tweak logo/favicon.ico to add some transparency. Thanks to
814 SamLT for work on this.
816 Don't cache data from non-recursive nameservers, since it
817 may erroneously look like a valid CNAME to a non-exitant
818 name. Thanks to Ben Winslow for finding this.
820 Call SO_BINDTODEVICE on the DHCP socket(s) when doing DHCP
821 on exactly one interface and --bind-interfaces is set. This
822 makes the OpenStack use-case of one dnsmasq per virtual
823 interface work. This is only available on Linux; it's not
824 supported on other platforms. Thanks to Vishvananda Ishaya
825 and the OpenStack team for the suggestion.
827 Updated French translation. Thanks to Gildas Le Nadan.
829 Give correct from-cache answers to explict CNAME queries.
830 Thanks to Rob Zwissler for spotting this.
832 Add --tftp-lowercase option. Thanks to Oliver Rath for the
835 Ensure that the DBus DhcpLeaseUpdated events are generated
836 when a lease goes through INIT_REBOOT state, even if the
837 dhcp-script is not in use. Thanks to Antoaneta-Ecaterina
840 Fix failure of TFTP over IPv4 on OpenBSD platform. Thanks
841 to Brad Smith for spotting this.
845 Fix compilation problem in Mac OS X Lion. Thanks to Olaf
846 Flebbe for the patch.
848 Fix DHCP when using --listen-address with an IP address
849 which is not the primary address of an interface.
851 Add --dhcp-client-update option.
853 Add Lua integration. Dnsmasq can now execute a DHCP
854 lease-change script written in Lua. This needs to be
855 enabled at compile time by setting HAVE_LUASCRIPT in
856 src/config.h or running "make COPTS=-DHAVE_LUASCRIPT"
857 Thanks to Jan-Piet Mens for the idea and proof-of-concept
860 Tidied src/config.h to distinguish between
861 platform-dependent compile-time options which are selected
862 automatically, and builder-selectable compile time
863 options. Document the latter better, and describe how to
864 set them from the make command line.
866 Tidied up IPPROTO_IP/SOL_IP (and IPv6 equivalent)
867 confusion. IPPROTO_IP works everywhere now.
869 Set TOS on DHCP sockets, this improves things on busy
870 wireless networks. Thanks to Dave Taht for the patch.
872 Determine VERSION automatically based on git magic:
873 release tags or hash values.
875 Improve start-up speed when reading large hosts files
876 containing many distinct addresses.
878 Fix problem if dnsmasq is started without the stdin,
879 stdout and stderr file descriptors open. This can manifest
880 itself as 100% CPU use. Thanks to Chris Moore for finding
883 Fix shell-scripting bug in bld/pkg-wrapper. Thanks to
884 Mark Mitchell for the patch.
886 Allow the TFP server or boot server in --pxe-service, to
887 be a domain name instead of an IP address. This allows for
888 round-robin to multiple servers, in the same way as
889 --dhcp-boot. A good suggestion from Cristiano Cumer.
891 Support BUILDDIR variable in the Makefile. Allows builds
892 for multiple archs from the same source tree with eg.
893 make BUILDDIR=linux (relative to dnsmasq tree)
894 make BUILDDIR=/tmp/openbsd (absolute path)
895 If BUILDDIR is not set, compilation happens in the src
896 directory, as before. Suggestion from Mark Mitchell.
898 Support DHCPv6. Support is there for the sort of things
899 the existing v4 server does, including tags, options,
900 static addresses and relay support. Missing is prefix
901 delegation, which is probably not required in the dnsmasq
902 niche, and an easy way to accept prefix delegations from
903 an upstream DHCPv6 server, which is. Future plans include
904 support for DHCPv6 router option and MAC address option
905 (to make selecting clients by MAC address work like IPv4).
906 These will be added as the standards mature.
907 This code has been tested, but this is the first release,
908 so don't bet the farm on it just yet. Many thanks to all
909 testers who have got it this far.
911 Support IPv6 router advertisements. This is a
912 simple-minded implementation, aimed at providing the
913 vestigial RA needed to go alongside IPv6. Is picks up
914 configuration from the DHCPv6 conf, and should just need
915 enabling with --enable-ra.
917 Fix long-standing wrinkle with --localise-queries that
918 could result in wrong answers when DNS packets arrive
919 via an interface other than the expected one. Thanks to
920 Lorenzo Milesi and John Hanks for spotting this one.
922 Update French translation. Thanks to Gildas Le Nadan.
924 Update Polish translation. Thanks to Jan Psota.
928 Fix regression in 2.58 which caused failure to start up
929 with some combinations of dnsmasq config and IPv6 kernel
930 network config. Thanks to Brielle Bruns for the bug
933 Improve dnsmasq's behaviour when network interfaces are
934 still doing duplicate address detection (DAD). Previously,
935 dnsmasq would wait up to 20 seconds at start-up for the
936 DAD state to terminate. This is broken for bridge
937 interfaces on recent Linux kernels, which don't start DAD
938 until the bridge comes up, and so can take arbitrary
939 time. The new behaviour lets dnsmasq poll for an arbitrary
940 time whilst providing service on other interfaces. Thanks
941 to Stephen Hemminger for pointing out the problem.
945 Provide a definition of the SA_SIZE macro where it's
946 missing. Fixes build failure on openBSD.
948 Don't include a zero terminator at the end of messages
949 sent to /dev/log when /dev/log is a datagram socket.
950 Thanks to Didier Rabound for spotting the problem.
952 Add --dhcp-sequential-ip flag, to force allocation of IP
953 addresses in ascending order. Note that the default
954 pseudo-random mode is in general better but some
955 server-deployment applications need this.
957 Fix problem where a server-id of 0.0.0.0 is sent to a
958 client when a dhcp-relay is in use if a client renews a
959 lease after dnsmasq restart and before any clients on the
960 subnet get a new lease. Thanks to Mike Ruiz for assistance
961 in chasing this one down.
963 Don't return NXDOMAIN to an AAAA query if we have CNAME
964 which points to an A record only: NODATA is the correct
965 reply in this case. Thanks to Tom Fernandes for spotting
968 Relax the need to supply a netmask in --dhcp-range for
969 networks which use a DHCP relay. Whilst this is still
970 desireable, in the absence of a netmask dnsmasq will use
971 a default based on the class (A, B, or C) of the address.
972 This should at least remove a cause of mysterious failure
973 for people using RFC1918 addresses and relays.
975 Add support for Linux conntrack connection marking. If
976 enabled with --conntrack, the connection mark for incoming
977 DNS queries will be copied to the outgoing connections
978 used to answer those queries. This allows clever firewall
979 and accounting stuff. Only available if dnsmasq is
980 compiled with HAVE_CONNTRACK and adds a dependency on
981 libnetfilter-conntrack. Thanks to Ed Wildgoose for the
982 initial idea, testing and sponsorship of this function.
984 Provide a sane error message when someone attempts to
985 match a tag in --dhcp-host.
987 Tweak the behaviour of --domain-needed, to avoid problems
988 with recursive nameservers downstream of dnsmasq. The new
989 behaviour only stops A and AAAA queries, and returns
990 NODATA rather than NXDOMAIN replies.
992 Efficiency fix for very large DHCP configurations, thanks
993 to James Gartrell and Mike Ruiz for help with this.
995 Allow the TFTP-server address in --dhcp-boot to be a
996 domain-name which is looked up in /etc/hosts. This can
997 give multiple IP addresses which are used round-robin,
998 thus doing TFTP server load-balancing. Thanks to Sushil
999 Agrawal for the patch.
1001 When two tagged dhcp-options for a particular option
1002 number are both valid, use the one which is valid without
1003 a tag from the dhcp-range. Allows overriding of the value
1004 of a DHCP option for a particular host as well as
1005 per-network values. So
1006 --dhcp-range=set:interface1,......
1007 --dhcp-host=set:myhost,.....
1008 --dhcp-option=tag:interface1,option:nis-domain,"domain1"
1009 --dhcp-option=tag:myhost,option:nis-domain,"domain2"
1010 will set the NIS-domain to domain1 for hosts in the range, but
1011 override that to domain2 for a particular host.
1013 Fix bug which resulted in truncated files and timeouts for
1014 some TFTP transfers. The bug only occurs with netascii
1015 transfers and needs an unfortunate relationship between
1016 file size, blocksize and the number of newlines in the
1017 last block before it manifests itself. Many thanks to
1018 Alkis Georgopoulos for spotting the problem and providing
1019 a comprehensive test-case.
1021 Fix regression in TFTP server on *BSD platforms introduced
1022 in version 2.56, due to confusion with sockaddr
1023 length. Many thanks to Loic Pefferkorn for finding this.
1025 Support scope-ids in IPv6 addresses of nameservers from
1026 /etc/resolv.conf and in --server options. Eg
1027 nameserver fe80::202:a412:4512:7bbf%eth0 or
1028 server=fe80::202:a412:4512:7bbf%eth0. Thanks to
1029 Michael Stapelberg for the suggestion.
1031 Update Polish translation, thanks to Jan Psota.
1033 Update French translation. Thanks to Gildas Le Nadan.
1037 Add patches to allow build under Android.
1039 Provide our own header for the DNS protocol, rather than
1040 relying on arpa/nameser.h. This has proved more or less
1041 defective over the years and the final straw is that it's
1042 effectively empty on Android.
1044 Fix regression in 2.56 which caused hex constants in
1045 configuration to be rejected if they contain the '*'
1048 Correct wrong casts of arguments to ctype.h functions,
1049 isdigit(), isxdigit() etc. Thanks to Matthias Andree for
1052 Allow build with IDN support independently from i18n.
1053 IDN support continues to be included automatically
1054 when i18n is included.
1055 'make COPTS=-DHAVE_IDN' is the magic incantation.
1057 Modify check on extraneous command line junk (added in
1058 2.56) so that it doesn't complain about extra _empty_
1059 arguments. Otherwise this breaks libvirt.
1063 Add a patch to allow dnsmasq to get interface names right in a
1064 Solaris zone. Thanks to Dj Padzensky for this.
1066 Improve data-type parsing heuristics so that
1067 --dhcp-option=option:domain-search,.
1068 treats the value as a string and not an IP address.
1069 Thanks to Clemens Fischer for spotting that.
1071 Add IPv6 support to the TFTP server. Many thanks to Jan
1072 'RedBully' Seiffert for the patches.
1074 Log DNS queries at level LOG_INFO, rather then
1075 LOG_DEBUG. This makes things consistent with DHCP
1076 logging. Thanks to Adam Pribyl for spotting the problem.
1078 Ensure that dnsmasq terminates cleanly when using
1079 --syslog-async even if it cannot make a connection to the
1082 Add --add-mac option. This is to support currently
1083 experimental DNS filtering facilities. Thanks to Benjamin
1084 Petrin for the orignal patch.
1086 Fix bug which meant that tags were ignored in dhcp-range
1087 configuration specifying PXE-proxy service. Thanks to
1088 Cristiano Cumer for spotting this.
1090 Raise an error if there is extra junk, not part of an
1091 option, on the command line.
1093 Flag a couple of log messages in cache.c as coming from
1094 the DHCP subsystem. Thanks to Olaf Westrik for the patch.
1096 Omit timestamps from logs when a) logging to stderr and
1097 b) --keep-in-forground is set. The logging facility on the
1098 other end of stderr can be assumned to supply them. Thanks
1099 to John Hallam for the patch.
1101 Don't complain about strings longer than 255 characters in
1102 --txt-record, just split the long strings into 255
1103 character chunks instead.
1105 Fix crash on double-free. This bug can only happen when
1106 dhcp-script is in use and then only in rare circumstances
1107 triggered by high DHCP transaction rate and a slow
1108 script. Thanks to Ferenc Wagner for finding the problem.
1110 Only log that a file has been sent by TFTP after the
1111 transfer has completed succesfully.
1113 A good suggestion from Ferenc Wagner: extend
1114 the --domain option to allow this sort of thing:
1115 --domain=thekelleys.org.uk,192.168.0.0/24,local
1116 which automatically creates
1117 --local=/thekelleys.org.uk/
1118 --local=/0.168.192.in-addr.arpa/
1120 Tighten up syntax checking of hex contants in the config
1121 file. Thanks to Fred Damen for spotting this.
1123 Add dnsmasq logo/icon, contributed by Justin Swift. Many
1126 Never cache DNS replies which have the 'cd' bit set, or
1127 which result from queries forwarded with the 'cd' bit
1128 set. The 'cd' bit instructs a DNSSEC validating server
1129 upstream to ignore signature failures and return replies
1130 anyway. Without this change it's possible to pollute the
1131 dnsmasq cache with bad data by making a query with the
1132 'cd' bit set and subsequent queries would return this data
1133 without its being marked as suspect. Thanks to Anders
1134 Kaseorg for pointing out this problem.
1136 Add --proxy-dnssec flag, for compliance with RFC
1137 4035. Dnsmasq will now clear the 'ad' bit in answers returned
1138 from upstream validating nameservers unless this option is
1141 Allow a filename of "-" for --conf-file to read
1142 stdin. Suggestion from Timothy Redaelli.
1144 Rotate the order of SRV records in replies, to provide
1145 round-robin load balancing when all the priorities are
1146 equal. Thanks to Peter McKinney for the suggestion.
1149 contrib/MacOSX-launchd/uk.org.thekelleys.dnsmasq.plist
1150 so that it doesn't log all queries to a file by
1151 default. Thanks again to Peter McKinney.
1153 By default, setting an IPv4 address for a domain but not
1154 an IPv6 address causes dnsmasq to return
1155 an NODATA reply for IPv6 (or vice-versa). So
1156 --address=/google.com/1.2.3.4 stops IPv6 queries for
1157 *google.com from being forwarded. Make it possible to
1158 override this behaviour by defining the sematics if the
1159 same domain appears in both --server and --address.
1160 In that case, the --address has priority for the address
1161 family in which is appears, but the --server has priority
1162 of the address family which doesn't appear in --adddress
1164 --address=/google.com/1.2.3.4
1165 --server=/google.com/#
1166 will return 1.2.3.4 for IPv4 queries for *.google.com but
1167 forward IPv6 queries to the normal upstream nameserver.
1168 Similarly when setting an IPv6 address
1169 only this will allow forwarding of IPv4 queries. Thanks to
1170 William for pointing out the need for this.
1172 Allow more than one --dhcp-optsfile and --dhcp-hostsfile
1173 and make them understand directories as arguments in the
1174 same way as --addn-hosts. Suggestion from John Hanks.
1176 Ignore rebinding requests for leases we don't know
1177 about. Rebind is broadcast, so we might get to overhear a
1178 request meant for another DHCP server. NAKing this is
1179 wrong. Thanks to Brad D'Hondt for assistance with this.
1181 Fix cosmetic bug which produced strange output when
1182 dumping cache statistics with some configurations. Thanks
1183 to Fedor Kozhevnikov for spotting this.
1187 Fix crash when /etc/ethers is in use. Thanks to
1188 Gianluigi Tiesi for finding this.
1190 Fix crash in netlink_multicast(). Thanks to Arno Wald for
1193 Allow the empty domain "." in dhcp domain-search (119)
1198 There is no version 2.54 to avoid confusion with 2.53,
1199 which incorrectly identifies itself as 2.54.
1203 Fix failure to compile on Debian/kFreeBSD. Thanks to
1204 Axel Beckert and Petr Salinger.
1206 Fix code to avoid scary strict-aliasing warnings
1207 generated by gcc 4.4.
1209 Added FAQ entry warning about DHCP failures with Vista
1210 when firewalls block 255.255.255.255.
1212 Fixed bug which caused bad things to happen if a
1213 resolv.conf file which exists is subsequently removed.
1214 Thanks to Nikolai Saoukh for the patch.
1216 Rationalised the DHCP tag system. Every configuration item
1217 which can set a tag does so by adding "set:<tag>" and
1218 every configuration item which is conditional on a tag is
1219 made so by "tag:<tag>". The NOT operator changes to '!',
1220 which is a bit more intuitive too. Dhcp-host directives
1221 can set more than one tag now. The old '#' NOT,
1222 "net:" prefix and no-prefixes are still honoured, so
1223 no existing config file needs to be changed, but
1224 the documentation and new-style config files should be
1225 much less confusing.
1227 Added --tag-if to allow boolean operations on tags.
1228 This allows complicated logic to be clearer and more
1229 general. A great suggestion from Richard Voigt.
1231 Add broadcast/unicast information to DHCP logging.
1233 Allow --dhcp-broadcast to be unconditional.
1235 Fixed incorrect behaviour with NOT <tag> conditionals in
1236 dhcp-options. Thanks to Max Turkewitz for assistance
1239 If we send vendor-class encapsulated options based on the
1240 vendor-class supplied by the client, and no explicit
1241 vendor-class option is given, echo back the vendor-class
1244 Fix bug which stopped dnsmasq from matching both a
1245 circuitid and a remoteid. Thanks to Ignacio Bravo for
1248 Add --dhcp-proxy, which makes it possible to configure
1249 dnsmasq to use a DHCP relay agent as a full proxy, with
1250 all DHCP messages passing through the proxy. This is
1251 useful if the relay adds extra information to the packets
1252 it forwards, but cannot be configured with the RFC 5107
1253 server-override option.
1255 Added interface:<iface name> part to dhcp-range. The
1256 semantics of this are very odd at first sight, but it
1257 allows a single line of the form
1258 dhcp-range=interface:virt0,192.168.0.4,192.168.0.200
1259 to be added to dnsmasq configuration which then supplies
1260 DHCP and DNS services to that interface, without affecting
1261 what services are supplied to other interfaces and
1262 irrespective of the existance or lack of
1263 interface=<interface>
1264 lines elsewhere in the dnsmasq configuration. The idea is
1265 that such a line can be added automatically by libvirt
1266 or equivalent systems, without disturbing any manual
1269 Similarly to the above, allow --enable-tftp=<interface>
1271 Allow a TFTP root to be set separately for requests via
1272 different interfaces, --tftp-root=<path>,<interface>
1274 Correctly handle and log clashes between CNAMES and
1275 DNS names being given to DHCP leases. This fixes a bug
1276 which caused nonsense IP addresses to be logged. Thanks to
1277 Sergei Zhirikov for finding and analysing the problem.
1279 Tweak flush_log so as to avoid leaving the log
1280 file in non-blocking mode. O_NONBLOCK is a property of the
1281 file, not the process/descriptor.
1283 Fix contrib/Solaris10/create_package
1284 (/usr/man -> /usr/share/man) Thanks to Vita Batrla.
1286 Fix a problem where, if a client got a lease, then went
1287 to another subnet and got another lease, then moved back,
1288 it couldn't resume the old lease, but would instead get
1289 a new address. Thanks to Leonardo Rodrigues for spotting
1290 this and testing the fix.
1292 Fix weird bug which sometimes omitted certain characters
1293 from the start of quoted strings in dhcp-options. Thanks
1294 to Dayton Turner for spotting the problem.
1296 Add facility to redirect some domains to the standard
1297 upstream servers: this allows something like
1298 --server=/google.com/1.2.3.4 --server=/www.google.com/#
1299 which will send queries for *.google.com to 1.2.3.4,
1300 except *www.google.com which will be forwarded as usual.
1301 Thanks to AJ Weber for prompting this addition.
1303 Improve the hash-algorithm used to generate IP addresses
1304 from MAC addresses during initial DHCP address
1305 allocation. This improves performance when large numbers
1306 of hosts with similar MAC addresses all try and get an IP
1307 address at the same time. Thanks to Paul Smith for his
1310 Tweak DHCP code so that --bridge-interface can be used to
1311 select which IP alias of an interface should be used for
1312 DHCP purposes on Linux. If eth0 has an alias eth0:dhcp
1313 then adding --bridge-interface=eth0:dhcp,eth0 will use
1314 the address of eth0:dhcp to determine the correct subnet
1315 for DHCP address allocation. Thanks to Pawel Golaszewski
1316 for prompting this and Eric Cooper for further testing.
1318 Add --dhcp-generate-names. Suggestion by Ferenc Wagner.
1320 Tweak DNS server selection algorithm when there is more
1321 than one server available for a domain, eg.
1322 --server=/mydomain/1.1.1.1
1323 --server=/mydomain/2.2.2.2
1324 Thanks to Alberto Cuesta-Canada for spotting a weakness
1327 Add --max-ttl. Thanks to Fredrik Ringertz for the patch.
1329 Allow --log-facility=- to force all logging to
1330 stderr. Suggestion from Clemens Fischer.
1332 Fix regression which caused configuration like
1333 --address=/.domain.com/1.2.3.4 to be rejected. The dot to the
1334 left of the domain has been implied and not required for a
1335 long time, but it should be accepted for backward
1336 compatibility. Thanks to Andrew Burcin for spotting this.
1338 Add --rebind-domain-ok and --rebind-localhost-ok.
1339 Suggestion from Clemens Fischer.
1341 Log replies to queries of type TXT, when --log-queries
1344 Fix compiler warnings when compiled with -DNO_DHCP. Thanks
1345 to Shantanu Gadgil for the patch.
1347 Updated French translation. Thanks to Gildas Le Nadan.
1349 Updated Polish translation. Thanks to Jan Psota.
1351 Updated German translation. Thanks to Matthias Andree.
1353 Added contrib/static-arp, thanks to Darren Hoo.
1355 Fix corruption of the domain when a name from /etc/hosts
1356 overrides one supplied by a DHCP client. Thanks to Fedor
1357 Kozhevnikov for spotting the problem.
1359 Updated Spanish translation. Thanks to Chris Chatham.
1363 Work around a Linux kernel bug which insists that the
1364 length of the option passed to setsockopt must be at least
1365 sizeof(int) bytes, even if we're calling SO_BINDTODEVICE
1366 and the device name is "lo". Note that this is fixed
1367 in kernel 2.6.31, but the workaround is harmless and
1368 allows earlier kernels to be used. Also fix dnsmasq
1369 bug which reported the wrong address when this failed.
1370 Thanks to Fedor for finding this.
1372 The API for IPv6 PKTINFO changed around Linux kernel
1373 2.6.14. Workaround the case where dnsmasq is compiled
1374 against newer headers, but then run on an old kernel:
1375 necessary for some *WRT distros.
1377 Re-read the set of network interfaces when re-loading
1378 /etc/resolv.conf if --bind-interfaces is not set. This
1379 handles the case that loopback interfaces do not exist
1380 when dnsmasq is first started.
1382 Tweak the PXE code to support port 4011. This should
1383 reduce broadcasts and make things more reliable when other
1384 servers are around. It also improves inter-operability
1385 with certain clients.
1387 Make a pxe-service configuration with no filename or boot
1388 service type legal: this does a local boot. eg.
1389 pxe-service=x86PC, "Local boot"
1391 Be more conservative in detecting "A for A"
1392 queries. Dnsmasq checks if the name in a type=A query looks
1393 like a dotted-quad IP address and answers the query itself
1394 if so, rather than forwarding it. Previously dnsmasq
1395 relied in the library function inet_addr() to convert
1396 addresses, and that will accept some things which are
1397 confusing in this context, like 1.2.3 or even just
1398 1234. Now we only do A for A processing for four decimal
1399 numbers delimited by dots.
1401 A couple of tweaks to fix compilation on Solaris. Thanks
1402 to Joel Macklow for help with this.
1404 Another Solaris compilation tweak, needed for Solaris
1405 2009.06. Thanks to Lee Essen for that.
1407 Added extract packaging stuff from Lee Essen to
1410 Increased the default limit on number of leases to 1000
1411 (from 150). This is mainly a defence against DoS attacks,
1412 and for the average "one for two class C networks"
1413 installation, IP address exhaustion does that just as
1414 well. Making the limit greater than the number of IP
1415 addresses available in such an installation removes a
1416 surprise which otherwise can catch people out.
1418 Removed extraneous trailing space in the value of the
1419 DNSMASQ_TIME_REMAINING DNSMASQ_LEASE_LENGTH and
1420 DNSMASQ_LEASE_EXPIRES environment variables. Thanks to
1421 Gildas Le Nadan for spotting this.
1423 Provide the network-id tags for a DHCP transaction to
1424 the lease-change script in the environment variable
1425 DNSMASQ_TAGS. A good suggestion from Gildas Le Nadan.
1427 Add support for RFC3925 "Vendor-Identifying Vendor
1428 Options". The syntax looks like this:
1429 --dhcp-option=vi-encap:<enterprise number>, .........
1431 Add support to --dhcp-match to allow matching against
1432 RFC3925 "Vendor-Identifying Vendor Classes". The syntax
1434 --dhcp-match=tag,vi-encap<enterprise number>, <value>
1436 Add some application specific code to assist in
1437 implementing the Broadband forum TR069 CPE-WAN
1438 specification. The details are in contrib/CPE-WAN/README
1440 Increase the default DNS packet size limit to 4096, as
1441 recommended by RFC5625 section 4.4.3. This can be
1442 reconfigured using --edns-packet-max if needed. Thanks to
1443 Francis Dupont for pointing this out.
1445 Rewrite query-ids even for TSIG signed packets, since
1446 this is allowed by RFC5625 section 4.5.
1448 Use getopt_long by default on OS X. It has been supported
1449 since version 10.3.0. Thanks to Arek Dreyer for spotting
1452 Added up-to-date startup configuration for MacOSX/launchd
1453 in contrib/MacOSX-launchd. Thanks to Arek Dreyer for
1456 Fix link error when including Dbus but excluding DHCP.
1457 Thanks to Oschtan for the bug report.
1459 Updated French translation. Thanks to Gildas Le Nadan.
1461 Updated Polish translation. Thanks to Jan Psota.
1463 Updated Spanish translation. Thanks to Chris Chatham.
1465 Fixed confusion about domains, when looking up DHCP hosts
1466 in /etc/hosts. This could cause spurious "Ignoring
1467 domain..." messages. Thanks to Fedor Kozhevnikov for
1468 finding and analysing the problem.
1472 Add support for internationalised DNS. Non-ASCII characters
1473 in domain names found in /etc/hosts, /etc/ethers and
1474 /etc/dnsmasq.conf will be correctly handled by translation to
1475 punycode, as specified in RFC3490. This function is only
1476 available if dnsmasq is compiled with internationalisation
1477 support, and adds a dependency on GNU libidn. Without i18n
1478 support, dnsmasq continues to be compilable with just
1479 standard tools. Thanks to Yves Dorfsman for the
1482 Add two more environment variables for lease-change scripts:
1483 First, DNSMASQ_SUPPLIED_HOSTNAME; this is set to the hostname
1484 supplied by a client, even if the actual hostname used is
1485 over-ridden by dhcp-host or dhcp-ignore-names directives.
1486 Also DNSMASQ_RELAY_ADDRESS which gives the address of
1487 a DHCP relay, if used.
1488 Suggestions from Michael Rack.
1490 Fix regression which broke echo of relay-agent
1491 options. Thanks to Michael Rack for spotting this.
1493 Don't treat option 67 as being interchangeable with
1494 dhcp-boot parameters if it's specified as
1497 Make the code to call scripts on lease-change compile-time
1498 optional. It can be switched off by editing src/config.h
1499 or building with "make COPTS=-DNO_SCRIPT".
1501 Make the TFTP server cope with filenames from Windows/DOS
1502 which use '\' as pathname separator. Thanks to Ralf for
1505 Updated Polish translation. Thanks to Jan Psota.
1507 Warn if an IP address is duplicated in /etc/ethers. Thanks
1508 to Felix Schwarz for pointing this out.
1510 Teach --conf-dir to take an option list of file suffices
1511 which will be ignored when scanning the directory. Useful
1512 for backup files etc. Thanks to Helmut Hullen for the
1515 Add new DHCP option named tftpserver-address, which
1516 corresponds to the third argument of dhcp-boot. This
1517 allows the complete functionality of dhcp-boot to be
1518 replicated with dhcp-option. Useful when using
1521 Test which upstream nameserver to use every 10 seconds
1522 or 50 queries and not just when a query times out and
1523 is retried. This should improve performance when there
1524 is a slow nameserver in the list. Thanks to Joe for the
1527 Don't do any PXE processing, even for clients with the
1528 correct vendorclass, unless at least one pxe-prompt or
1529 pxe-service option is given. This stops dnsmasq
1530 interfering with proxy PXE subsystems when it is just
1531 the DHCP server. Thanks to Spencer Clark for spotting this.
1533 Limit the blocksize used for TFTP transfers to a value
1534 which avoids packet fragmentation, based on the MTU of the
1535 local interface. Many netboot ROMs can't cope with
1538 Honour dhcp-ignore configuration for PXE and proxy-PXE
1539 requests. Thanks to Niels Basjes for the bug report.
1541 Updated French translation. Thanks to Gildas Le Nadan.
1545 Fix security problem which allowed any host permitted to
1546 do TFTP to possibly compromise dnsmasq by remote buffer
1547 overflow when TFTP enabled. Thanks to Core Security
1548 Technologies and Iván Arce, Pablo Hernán Jorge, Alejandro
1549 Pablo Rodriguez, Martín Coco, Alberto Soliño Testa and
1550 Pablo Annetta. This problem has Bugtraq id: 36121
1553 Fix a problem which allowed a malicious TFTP client to
1554 crash dnsmasq. Thanks to Steve Grubb at Red Hat for
1555 spotting this. This problem has Bugtraq id: 36120 and
1560 Fix regression in 2.48 which disables the lease-change
1561 script. Thanks to Jose Luis Duran for spotting this.
1563 Log TFTP "file not found" errors. These were not logged,
1564 since a normal PXELinux boot generates many of them, but
1565 the lack of the messages seems to be more confusing than
1566 routinely seeing them when there is no real error.
1568 Update Spanish translation. Thanks to Chris Chatham.
1572 Archived the extensive, backwards, changelog to
1573 CHANGELOG.archive. The current changelog now runs from
1574 version 2.43 and runs conventionally.
1576 Fixed bug which broke binding of servers to physical
1577 interfaces when interface names were longer than four
1578 characters. Thanks to MURASE Katsunori for the patch.
1580 Fixed netlink code to check that messages come from the
1581 correct source, and not another userspace process. Thanks
1582 to Steve Grubb for the patch.
1584 Maintainability drive: removed bug and missing feature
1585 workarounds for some old platforms. Solaris 9, OpenBSD
1586 older than 4.1, Glibc older than 2.2, Linux 2.2.x and
1587 DBus older than 1.1.x are no longer supported.
1589 Don't read included configuration files more than once:
1590 allows complex configuration structures without problems.
1592 Mark log messages from the various subsystems in dnsmasq:
1593 messages from the DHCP subsystem now have the ident string
1594 "dnsmasq-dhcp" and messages from TFTP have ident
1595 "dnsmasq-tftp". Thanks to Olaf Westrik for the patch.
1597 Fix possible infinite DHCP protocol loop when an IP
1598 address nailed to a hostname (not a MAC address) and a
1599 host sometimes provides the name, sometimes not.
1601 Allow --addn-hosts to take a directory: all the files
1602 in the directory are read. Thanks to Phil Cornelius for
1605 Support --bridge-interface on all platforms, not just BSD.
1607 Added support for advanced PXE functions. It's now
1608 possible to define a prompt and menu options which will
1609 be displayed when a client PXE boots. It's also possible to
1610 hand-off booting to other boot servers. Proxy-DHCP, where
1611 dnsmasq just supplies the PXE information and another DHCP
1612 server does address allocation, is also allowed. See the
1613 --pxe-prompt and --pxe-service keywords. Thanks to
1614 Alkis Georgopoulos for the suggestion and Guilherme Moro
1615 and Michael Brown for assistance.
1617 Improvements to DHCP logging. Thanks to Tom Metro for
1620 Add ability to build dnsmasq without DHCP support. To do
1621 this, edit src/config.h or build with
1622 "make COPTS=-DNO_DHCP". Thanks to Mahavir Jain for the patch.
1624 Added --test command-line switch - syntax check
1625 configuration files only.
1627 Updated French translation. Thanks to Gildas Le Nadan.
1631 Updated French translation. Thanks to Gildas Le Nadan.
1633 Fixed interface enumeration code to work on NetBSD
1634 5.0. Thanks to Roy Marples for the patch.
1636 Updated config.h to use the same location for the lease
1637 file on NetBSD as the other *BSD variants. Also allow
1638 LEASEFILE and CONFFILE symbols to be overriden in CFLAGS.
1640 Handle duplicate address detection on IPv6 more
1641 intelligently. In IPv6, an interface can have an address
1642 which is not usable, because it is still undergoing DAD
1643 (such addresses are marked "tentative"). Attempting to
1644 bind to an address in this state returns an error,
1645 EADDRNOTAVAIL. Previously, on getting such an error,
1646 dnsmasq would silently abandon the address, and never
1647 listen on it. Now, it retries once per second for 20
1648 seconds before generating a fatal error. 20 seconds should
1649 be long enough for any DAD process to complete, but can be
1650 adjusted in src/config.h if necessary. Thanks to Martin
1651 Krafft for the bug report.
1653 Add DBus introspection. Patch from Jeremy Laine.
1655 Update Dbus configuration file. Patch from Colin Walters.
1657 http://bugs.freedesktop.org/show_bug.cgi?id=18961
1659 Support arbitrarily encapsulated DHCP options, suggestion
1660 and initial patch from Samium Gromoff. This is useful for
1661 (eg) gPXE, which expect all its private options to be
1662 encapsulated inside a single option 175. So, eg,
1664 dhcp-option = encap:175, 190, "iscsi-client0"
1665 dhcp-option = encap:175, 191, "iscsi-client0-secret"
1667 will provide iSCSI parameters to gPXE.
1669 Enhance --dhcp-match to allow testing of the contents of a
1670 client-sent option, as well as its presence. This
1671 application in mind for this is RFC 4578
1672 client-architecture specifiers, but it's generally useful.
1673 Joey Korkames suggested the enhancement.
1675 Move from using the IP_XMIT_IF ioctl to IP_BOUND_IF on
1676 OpenSolaris. Thanks to Bastian Machek for the heads-up.
1678 No longer complain about blank lines in
1679 /etc/ethers. Thanks to Jon Nelson for the patch.
1681 Fix binding of servers to physical devices, eg
1682 --server=/domain/1.2.3.4@eth0 which was broken from 2.43
1683 onwards unless --query-port=0 set. Thanks to Peter Naulls
1686 Reply to DHCPINFORM requests even when the supplied ciaddr
1687 doesn't fall in any dhcp-range. In this case it's not
1688 possible to supply a complete configuration, but
1689 individually-configured options (eg PAC) may be useful.
1691 Allow the source address of an alias to be a range:
1692 --alias=192.168.0.0,10.0.0.0,255.255.255.0 maps the whole
1693 subnet 192.168.0.0->192.168.0.255 to 10.0.0.0->10.0.0.255,
1695 --alias=192.168.0.10-192.168.0.40,10.0.0.0,255.255.255.0
1696 maps only the 192.168.0.10->192.168.0.40 region. Thanks to
1697 Ib Uhrskov for the suggestion.
1699 Don't dynamically allocate DHCP addresses which may break
1700 Windows. Addresses which end in .255 or .0 are broken in
1701 Windows even when using supernetting.
1702 --dhcp-range=192.168.0.1,192.168.1.254,255,255,254.0 means
1703 192.168.0.255 is a valid IP address, but not for Windows.
1704 See Microsoft KB281579. We therefore no longer allocate
1705 these addresses to avoid hard-to-diagnose problems.
1707 Update Polish translation. Thanks to Jan Psota.
1709 Delete the PID-file when dnsmasq shuts down. Note that by
1710 this time, dnsmasq is normally not running as root, so
1711 this will fail if the PID-file is stored in a root-owned
1712 directory; such failure is silently ignored. To take
1713 advantage of this feature, the PID-file must be stored in a
1714 directory owned and write-able by the user running
1719 Allow --bootp-dynamic to take a netid tag, so that it may
1720 be selectively enabled. Thanks to Olaf Westrik for the
1723 Remove ISC-leasefile reading code. This has been
1724 deprecated for a long time, and last time I removed it, it
1725 ended up going back by request of one user. This time,
1726 it's gone for good; otherwise it would need to be
1727 re-worked to support multiple domains (see below).
1729 Support DHCP clients in multiple DNS domains. This is a
1730 long-standing request. Clients are assigned to a domain
1731 based in their IP address.
1733 Add --dhcp-fqdn flag, which changes behaviour if DNS names
1734 assigned to DHCP clients. When this is set, there must be
1735 a domain associated with each client, and only
1736 fully-qualified domain names are added to the DNS. The
1737 advantage is that the only the FQDN needs to be unique,
1738 so that two or more DHCP clients can share a hostname, as
1739 long as they are in different domains.
1741 Set environment variable DNSMASQ_DOMAIN when invoking
1742 lease-change script. This may be useful information to
1743 have now that it's variable.
1745 Tighten up data-checking code for DNS packet
1746 handling. Thanks to Steve Dodd who found certain illegal
1747 packets which could crash dnsmasq. No memory overwrite was
1748 possible, so this is not a security issue beyond the DoS
1751 Update example config dhcp option 47, the previous
1752 suggestion generated an illegal, zero-length,
1753 option. Thanks to Matthias Andree for finding this.
1755 Rewrite hosts-file reading code to remove the limit of
1756 1024 characters per line. John C Meuser found this.
1758 Create a net-id tag with the name of the interface on
1759 which the DHCP request was received.
1761 Fixed minor memory leak in DBus code, thanks to Jeremy
1762 Laine for the patch.
1764 Emit DBus signals as the DHCP lease database
1765 changes. Thanks to Jeremy Laine for the patch.
1767 Allow for more that one MAC address in a dhcp-host
1768 line. This configuration tells dnsmasq that it's OK to
1769 abandon a DHCP lease of the fixed address to one MAC
1770 address, if another MAC address in the dhcp-host statement
1771 asks for an address. This is useful to give a fixed
1772 address to a host which has two network interfaces
1773 (say, a laptop with wired and wireless interfaces.)
1774 It's very important to ensure that only one interface
1775 at a time is up, since dnsmasq abandons the first lease
1776 and re-uses the address before the leased time has
1777 elapsed. John Gray suggested this.
1779 Tweak the response to a DHCP request packet with a wrong
1780 server-id when --dhcp-authoritative is set; dnsmasq now
1781 returns a DHCPNAK, rather than silently ignoring the
1782 packet. Thanks to Chris Marget for spotting this
1785 Add --cname option. This provides a limited alias
1786 function, usable for DHCP names. Thanks to AJ Weber for
1787 suggestions on this.
1789 Updated contrib/webmin with latest version from Neil
1792 Updated Polish translation. Thanks to Jan Psota.
1794 Correct the text names for DHCP options 64 and 65 to be
1795 "nis+-domain" and "nis+-servers".
1797 Updated Spanish translation. Thanks to Chris Chatham.
1799 Force re-reading of /etc/resolv.conf when an "interface
1804 Fix total DNS failure in release 2.44 unless --min-port
1805 specified. Thanks to Steven Barth and Grant Coady for
1806 bugreport. Also reject out-of-range port spec, which could
1807 break things too: suggestion from Gilles Espinasse.
1811 Fix crash when unknown client attempts to renew a DHCP
1812 lease, problem introduced in version 2.43. Thanks to
1813 Carlos Carvalho for help chasing this down.
1815 Fix potential crash when a host which doesn't have a lease
1816 does DHCPINFORM. Again introduced in 2.43. This bug has
1817 never been reported in the wild.
1819 Fix crash in netlink code introduced in 2.43. Thanks to
1820 Jean Wolter for finding this.
1822 Change implementation of min_port to work even if min-port
1825 Patch to enable compilation of latest Mac OS X. Thanks to
1828 Update Spanish translation. Thanks to Christopher Chatham.
1832 Updated Polish translation. Thanks to Jan Psota.
1834 Flag errors when configuration options are repeated
1837 Further tweaks for GNU/kFreeBSD
1839 Add --no-wrap to msgmerge call - provides nicer .po file
1842 Honour lease-time spec in dhcp-host lines even for
1843 BOOTP. The user is assumed to known what they are doing in
1844 this case. (Hosts without the time spec still get infinite
1845 leases for BOOTP, over-riding the default in the
1846 dhcp-range.) Thanks to Peter Katzmann for uncovering this.
1848 Fix problem matching relay-agent ids. Thanks to Michael
1849 Rack for the bug report.
1851 Add --naptr-record option. Suggestion from Johan
1854 Implement RFC 5107 server-id-override DHCP relay agent
1857 Apply patches from Stefan Kruger for compilation on
1858 Solaris 10 under Sun studio.
1860 Yet more tweaking of Linux capability code, to suppress
1861 pointless wingeing from kernel 2.6.25 and above.
1863 Improve error checking during startup. Previously, some
1864 errors which occurred during startup would be worked
1865 around, with dnsmasq still starting up. Some were logged,
1866 some silent. Now, they all cause a fatal error and dnsmasq
1867 terminates with a non-zero exit code. The errors are those
1868 associated with changing uid and gid, setting process
1869 capabilities and writing the pidfile. Thanks to Uwe
1870 Gansert and the Suse security team for pointing out
1871 this improvement, and Bill Reimers for good implementation
1874 Provide NO_LARGEFILE compile option to switch off largefile
1875 support when compiling against versions of uclibc which
1876 don't support it. Thanks to Stephane Billiart for the patch.
1878 Implement random source ports for interactions with
1879 upstream nameservers. New spoofing attacks have been found
1880 against nameservers which do not do this, though it is not
1881 clear if dnsmasq is vulnerable, since to doesn't implement
1882 recursion. By default dnsmasq will now use a different
1883 source port (and socket) for each query it sends
1884 upstream. This behaviour can suppressed using the
1885 --query-port option, and the old default behaviour
1886 restored using --query-port=0. Explicit source-port
1887 specifications in --server configs are still honoured.
1889 Replace the random number generator, for better
1890 security. On most BSD systems, dnsmasq uses the
1891 arc4random() RNG, which is secure, but on other platforms,
1892 it relied on the C-library RNG, which may be
1893 guessable and therefore allow spoofing. This release
1894 replaces the libc RNG with the SURF RNG, from Daniel
1895 J. Berstein's DJBDNS package.
1897 Don't attempt to change user or group or set capabilities
1898 if dnsmasq is run as a non-root user. Without this, the
1899 change from soft to hard errors when these fail causes
1900 problems for non-root daemons listening on high
1901 ports. Thanks to Patrick McLean for spotting this.
1903 Updated French translation. Thanks to Gildas Le Nadan.
1907 The changelog for version 2.42 and earlier is
1908 available in CHANGELOG.archive.
projects / people / ms / dnsmasq.git / blob