2 Implement dynamic interface discovery on *BSD. This allows
3 the contructor: syntax to be used in dhcp-range for DHCPv6
4 on the BSD platform. Thanks to Matthias Andree for
5 valuable research on how to implement this.
7 Fix infinite loop associated with some --bogus-nxdomain
8 configs. Thanks fogobogo for the bug report.
10 Fix missing RA RDNS option with configuration like
11 --dhcp-option=option6:23,[::] Thanks to Tsachi Kimeldorfer
12 for spotting the problem.
14 Add [fd00::] and [fe80::] as special addresses in DHCPv6
15 options, analogous to [::]. [fd00::] is replaced with the
16 actual ULA of the interface on the machine running
17 dnsmasq, [fe80::] with the link-local address.
18 Thanks to Tsachi Kimeldorfer for championing this.
20 DNSSEC validation and caching. Dnsmasq needs to be
21 compiled with this enabled, with
23 make dnsmasq COPTS=-DHAVE_DNSSEC
25 this add dependencies on the nettle crypto library and the
26 gmp maths library. It's possible to have these linked
29 make dnsmasq COPTS='-DHAVE_DNSSEC -DHAVE_DNSSEC_STATIC'
31 which bloats the dnsmasq binary, but saves the size of
32 the shared libraries which are much bigger.
34 To enable, DNSSEC, you will need a set of
35 trust-anchors. Now that the TLDs are signed, this can be
36 the keys for the root zone, and for convenience they are
37 included in trust-anchors.conf in the dnsmasq
38 distribution. You should of course check that these are
39 legitimate and up-to-date. So, adding
41 conf-file=/path/to/trust-anchors.conf
44 to your config is all thats needed to get things
45 working. The upstream nameservers have to be DNSSEC-capable
46 too, of course. Many ISP nameservers aren't, but the
47 Google public nameservers (8.8.8.8 and 8.8.4.4) are.
48 When DNSSEC is configured, dnsmasq validates any queries
49 for domains which are signed. Query results which are
50 bogus are replaced with SERVFAIL replies, and results
51 which are correctly signed have the AD bit set. In
52 addition, and just as importantly, dnsmasq supplies
53 correct DNSSEC information to clients which are doing
54 their own validation, and caches DNSKEY, DS and RRSIG
55 records, which significantly improve the performance of
56 downstream validators. Setting --log-queries will show
59 If a domain is returned from an upstream nameserver without
60 DNSSEC signature, dnsmasq by default trusts this. This
61 means that for unsigned zone (still the majority) there
62 is effectively no cost for having DNSSEC enabled. Of course
63 this allows an attacker to replace a signed record with a
64 false unsigned record. This is addressed by the
65 --dnssec-check-unsigned flag, which instructs dnsmasq
66 to prove that an unsigned record is legitimate, by finding
67 a secure proof that the zone containing the record is not
68 signed. Doing this has costs (typically one or two extra
69 upstream queries). It also has a nasty failure mode if
70 dnsmasq's upstream nameservers are not DNSSEC capable.
71 Without --dnssec-check-unsigned using such an upstream
72 server will simply result in not queries being validated;
73 with --dnssec-check-unsigned enabled and a
74 DNSSEC-ignorant upstream server, _all_ queries will fail.
76 Note that DNSSEC requires that the local time is valid and
77 accurate, if not then DNSSEC validation will fail. NTP
78 should be running. This presents a problem for routers
79 without a battery-backed clock. To set the time needs NTP
80 to do DNS lookups, but lookups will fail until NTP has run.
81 To address this, there's a flag, --dnssec-no-timecheck
82 which disables the time checks (only) in DNSSEC. When dnsmasq
83 is started and the clock is not synced, this flag should
84 be used. As soon as the clock is synced, SIGHUP dnsmasq.
85 The SIGHUP clears the cache of partially-validated data and
86 resets the no-timecheck flag, so that all DNSSEC checks
87 henceforward will be complete.
89 The development of DNSSEC in dnsmasq was started by
90 Giovanni Bajo, to whom huge thanks are owed. It has been
91 supported by Comcast, whose techfund grant has allowed for
92 an invaluable period of full-time work to get it to
95 Add --rev-server. Thanks to Dave Taht for suggesting this.
97 Add --servers-file. Allows dynamic update of upstream servers
98 full access to configuration.
100 Add --local-service. Accept DNS queries only from hosts
101 whose address is on a local subnet, ie a subnet for which
102 an interface exists on the server. This option
103 only has effect if there are no --interface --except-interface,
104 --listen-address or --auth-server options. It is intended
105 to be set as a default on installation, to allow
106 unconfigured installations to be useful but also safe from
107 being used for DNS amplification attacks.
109 Fix crashes in cache_get_cname_target() when dangling CNAMEs
110 encountered. Thanks to Andy and the rt-n56u project for
111 find this and helping to chase it down.
113 Fix wrong RCODE in authoritative DNS replies to PTR queries. The
114 correct answer was included, but the RCODE was set to NXDOMAIN.
115 Thanks to Craig McQueen for spotting this.
117 Make statistics available as DNS queries in the .bind TLD as
118 well as logging them.
122 Use random addresses for DHCPv6 temporary address
123 allocations, instead of algorithmically determined stable
126 Fix bug which meant that the DHCPv6 DUID was not available
127 in DHCP script runs during the lifetime of the dnsmasq
128 process which created the DUID de-novo. Once the DUID was
129 created and stored in the lease file and dnsmasq
130 restarted, this bug disappeared.
132 Fix bug introduced in 2.67 which could result in erroneous
133 NXDOMAIN returns to CNAME queries.
135 Fix build failures on MacOS X and openBSD.
137 Allow subnet specifications in --auth-zone to be interface
138 names as well as address literals. This makes it possible
139 to configure authoritative DNS when local address ranges
140 are dynamic and works much better than the previous
141 work-around which exempted contructed DHCP ranges from the
142 IP address filtering. As a consequence, that work-around
143 is removed. Under certain circumstances, this change wil
144 break existing configuration: if you're relying on the
145 contructed-range exception, you need to change --auth-zone
146 to specify the same interface as is used to construct your
147 DHCP ranges, probably with a trailing "/6" like this:
148 --auth-zone=example.com,eth0/6 to limit the addresses to
149 IPv6 addresses of eth0.
151 Fix problems when advertising deleted IPv6 prefixes. If
152 the prefix is deleted (rather than replaced), it doesn't
153 get advertised with zero preferred time. Thanks to Tsachi
156 Fix segfault with some locally configured CNAMEs. Thanks
157 to Andrew Childs for spotting the problem.
159 Fix memory leak on re-reading /etc/hosts and friends,
162 Check the arrival interface of incoming DNS and TFTP
163 requests via IPv6, even in --bind-interfaces mode. This
164 isn't possible for IPv4 and can generate scary warnings,
165 but as it's always possible for IPv6 (the API always
166 exists) then we should do it always.
168 Tweak the rules on prefix-lengths in --dhcp-range for
169 IPv6. The new rule is that the specified prefix length
170 must be larger than or equal to the prefix length of the
171 corresponding address on the local interface.
175 Fix crash if upstream server returns SERVFAIL when
176 --conntrack in use. Thanks to Giacomo Tazzari for finding
177 this and supplying the patch.
179 Repair regression in 2.64. That release stopped sending
180 lease-time information in the reply to DHCPINFORM
181 requests, on the correct grounds that it was a standards
182 violation. However, this broke the dnsmasq-specific
183 dhcp_lease_time utility. Now, DHCPINFORM returns
184 lease-time only if it's specifically requested
185 (maintaining standards) and the dhcp_lease_time utility
186 has been taught to ask for it (restoring functionality).
188 Fix --dhcp-match, --dhcp-vendorclass and --dhcp-userclass
189 to work with BOOTP and well as DHCP. Thanks to Peter
190 Korsgaard for spotting the problem.
192 Add --synth-domain. Thanks to Vishvananda Ishaya for
195 Fix failure to compile ipset.c if old kernel headers are
196 in use. Thanks to Eugene Rudoy for pointing this out.
198 Handle IPv4 interface-address labels in Linux. These are
199 often used to emulate the old IP-alias addresses. Before,
200 using --interface=eth0 would service all the addresses of
201 eth0, including ones configured as aliases, which appear
202 in ifconfig as eth0:0. Now, only addresses with the label
203 eth0 are active. This is not backwards compatible: if you
204 want to continue to bind the aliases too, you need to add
205 eg. --interface=eth0:0 to the config.
207 Fix "failed to set SO_BINDTODEVICE on DHCP socket: Socket
208 operation on non-socket" error on startup with
209 configurations which have exactly one --interface option
210 and do RA but _not_ DHCPv6. Thanks to Trever Adams for the
213 Generalise --interface-name to cope with IPv6 addresses
214 and multiple addresses per interface per address family.
216 Fix option parsing for --dhcp-host, which was generating a
217 spurious error when all seven possible items were
218 included. Thanks to Zhiqiang Wang for the bug report.
220 Remove restriction on prefix-length in --auth-zone. Thanks
221 to Toke Hoiland-Jorgensen for suggesting this.
223 Log when the maximum number of concurrent DNS queries is
224 reached. Thanks to Marcelo Salhab Brogliato for the patch.
226 If wildcards are used in --interface, don't assume that
227 there will only ever be one available interface for DHCP
228 just because there is one at start-up. More may appear, so
229 we can't use SO_BINDTODEVICE. Thanks to Natrio for the bug
232 Increase timeout/number of retries in TFTP to accomodate
233 AudioCodes Voice Gateways doing streaming writes to flash.
234 Thanks to Damian Kaczkowski for spotting the problem.
236 Fix crash with empty DHCP string options when adding zero
237 terminator. Thanks to Patrick McLean for the bug report.
239 Allow hostnames to start with a number, as allowed in
240 RFC-1123. Thanks to Kyle Mestery for the patch.
242 Fixes to DHCP FQDN option handling: don't terminate FQDN
243 if domain not known and allow a FQDN option with blank
244 name to request that a FQDN option is returned in the
245 reply. Thanks to Roy Marples for the patch.
247 Make --clear-on-reload apply to setting upstream servers
250 When the address which triggered the construction of an
251 advertised IPv6 prefix disappears, continue to advertise
252 the prefix for up to 2 hours, with the preferred lifetime
253 set to zero. This satisfies RFC 6204 4.3 L-13 and makes
254 things work better if a prefix disappears without being
255 deprecated first. Thanks to Uwe Schindler for persuasively
258 Fix MAC address enumeration on *BSD. Thanks to Brad Smith
261 Support RFC-4242 information-refresh-time options in the
262 reply to DHCPv6 information-request. The lease time of the
263 smallest valid dhcp-range is sent. Thanks to Uwe Schindler
266 Make --listen-address higher priority than --except-interface
267 in all circumstances. Thanks to Thomas Hood for the bugreport.
269 Provide independent control over which interfaces get TFTP
270 service. If enable-tftp is given a list of interfaces, then TFTP
271 is provided on those. Without the list, the previous behaviour
272 (provide TFTP to the same interfaces we provide DHCP to)
273 is retained. Thanks to Lonnie Abelbeck for the suggestion.
275 Add --dhcp-relay config option. Many thanks to vtsl.net
276 for sponsoring this development.
278 Fix crash with empty tag: in --dhcp-range. Thanks to
279 Kaspar Schleiser for the bug report.
281 Add "baseline" and "bloatcheck" makefile targets, for
282 revealing size changes during development. Thanks to
283 Vladislav Grishenko for the patch.
285 Cope with DHCPv6 clients which send REQUESTs without
286 address options - treat them as SOLICIT with rapid commit.
288 Support identification of clients by MAC address in
289 DHCPv6. When using a relay, the relay must support RFC
290 6939 for this to work. It always works for directly
291 connected clients. Thanks to Vladislav Grishenko
292 for prompting this feature.
294 Remove the rule for constructed DHCP ranges that the local
295 address must be either the first or last address in the
296 range. This was originally to avoid SLAAC addresses, but
297 we now explicitly autoconfig and privacy addresses instead.
299 Update Polish translation. Thanks to Jan Psota.
301 Fix problem in DHCPv6 vendorclass/userclass matching
302 code. Thanks to Tanguy Bouzeloc for the patch.
304 Update Spanish transalation. Thanks to Vicente Soriano.
306 Add --ra-param option. Thanks to Vladislav Grishenko for
309 Add --add-subnet configuration, to tell upstream DNS
310 servers where the original client is. Thanks to DNSthingy
311 for sponsoring this feature.
313 Add --quiet-dhcp, --quiet-dhcp6 and --quiet-ra. Thanks to
314 Kevin Darbyshire-Bryant for the initial patch.
316 Allow A/AAAA records created by --interface-name to be the
317 target of --cname. Thanks to Hadmut Danisch for the
320 Avoid treating a --dhcp-host which has an IPv6 address
321 as eligable for use with DHCPv4 on the grounds that it has
322 no address, and vice-versa. Thanks to Yury Konovalov for
323 spotting the problem.
325 Do a better job caching dangling CNAMEs. Thanks to Yves
326 Dorfsman for spotting the problem.
330 Add the ability to act as an authoritative DNS
331 server. Dnsmasq can now answer queries from the wider 'net
332 with local data, as long as the correct NS records are set
333 up. Only local data is provided, to avoid creating an open
334 DNS relay. Zone transfer is supported, to allow secondary
335 servers to be configured.
337 Add "constructed DHCP ranges" for DHCPv6. This is intended
338 for IPv6 routers which get prefixes dynamically via prefix
339 delegation. With suitable configuration, stateful DHCPv6
340 and RA can happen automatically as prefixes are delegated
341 and then deprecated, without having to re-write the
342 dnsmasq configuration file or restart the daemon. Thanks to
343 Steven Barth for extensive testing and development work on
346 Fix crash on startup on Solaris 11. Regression probably
347 introduced in 2.61. Thanks to Geoff Johnstone for the
350 Add code to make behaviour for TCP DNS requests that same
351 as for UDP requests, when a request arrives for an allowed
352 address, but via a banned interface. This change is only
353 active on Linux, since the relevant API is missing (AFAIK)
354 on other platforms. Many thanks to Tomas Hozza for
355 spotting the problem, and doing invaluable discovery of
356 the obscure and undocumented API required for the solution.
358 Don't send the default DHCP option advertising dnsmasq as
359 the local DNS server if dnsmasq is configured to not act
360 as DNS server, or it's configured to a non-standard port.
362 Add DNSMASQ_CIRCUIT_ID, DNSMASQ_SUBCRIBER_ID,
363 DNSMASQ_REMOTE_ID variables to the environment of the
364 lease-change script (and the corresponding Lua). These hold
365 information inserted into the DHCP request by a DHCP relay
366 agent. Thanks to Lakefield Communications for providing a
367 bounty for this addition.
369 Fixed crash, introduced in 2.64, whilst handling DHCPv6
370 information-requests with some common configurations.
371 Thanks to Robert M. Albrecht for the bug report and
374 Add --ipset option. Thanks to Jason A. Donenfeld for the
377 Don't erroneously reject some option names in --dhcp-match
378 options. Thanks to Benedikt Hochstrasser for the bug report.
380 Allow a trailing '*' wildcard in all interface-name
381 configurations. Thanks to Christian Parpart for the patch.
383 Handle the situation where libc headers define
384 SO_REUSEPORT, but the kernel in use doesn't, to cope with
385 the introduction of this option to Linux. Thanks to Rich
386 Felker for the bug report.
388 Update Polish translation. Thanks to Jan Psota.
390 Fix crash if the configured DHCP lease limit is
391 reached. Regression occurred in 2.61. Thanks to Tsachi for
394 Update the French translation. Thanks to Gildas le Nadan.
398 Fix regression which broke forwarding of queries sent via
399 TCP which are not for A and AAAA and which were directed to
400 non-default servers. Thanks to Niax for the bug report.
402 Fix failure to build with DHCP support excluded. Thanks to
403 Gustavo Zacarias for the patch.
405 Fix nasty regression in 2.64 which completely broke cacheing.
409 Handle DHCP FQDN options with all flag bits zero and
410 --dhcp-client-update set. Thanks to Bernd Krumbroeck for
411 spotting the problem.
413 Finesse the check for /etc/hosts names which conflict with
414 DHCP names. Previously a name/address pair in /etc/hosts
415 which didn't match the name/address of a DHCP lease would
416 generate a warning. Now that only happesn if there is not
417 also a match. This allows multiple addresses for a name in
418 /etc/hosts with one of them assigned via DHCP.
420 Fix broken vendor-option processing for BOOTP. Thanks to
421 Hans-Joachim Baader for the bug report.
423 Don't report spurious netlink errors, regression in
424 2.63. Thanks to Vladislav Grishenko for the patch.
426 Flag DHCP or DHCPv6 in starup logging. Thanks to
427 Vladislav Grishenko for the patch.
429 Add SetServersEx method in DBus interface. Thanks to Dan
430 Williams for the patch.
432 Add SetDomainServers method in DBus interface. Thanks to
433 Roy Marples for the patch.
435 Fix build with later Lua libraries. Thansk to Cristian
436 Rodriguez for the patch.
438 Add --max-cache-ttl option. Thanks to Dennis Kaarsemaker
441 Fix breakage of --host-record parsing, resulting in
442 infinte loop at startup. Regression in 2.63. Thanks to
443 Haim Gelfenbeyn for spotting this.
445 Set SO_REUSEADDRESS and SO_V6ONLY options on the DHCPv6
446 socket, this allows multiple instances of dnsmasq on a
447 single machine, in the same way as for DHCPv4. Thanks to
448 Gene Czarcinski and Vladislav Grishenko for work on this.
450 Fix DHCPv6 to do access control correctly when it's
451 configured with --listen-address. Thanks to
452 Gene Czarcinski for sorting this out.
454 Add a "wildcard" dhcp-range which works for any IPv6
455 subnet, --dhcp-range=::,static Useful for Stateless
456 DHCPv6. Thanks to Vladislav Grishenko for the patch.
458 Don't include lease-time in DHCPACK replies to DHCPINFORM
459 queries, since RFC-2131 says we shouldn't. Thanks to
460 Wouter Ibens for pointing this out.
462 Makefile tweak to do dependency checking on header files.
463 Thanks to Johan Peeters for the patch.
465 Check interface for outgoing unsolicited router
466 advertisements, rather than relying on interface address
467 configuration. Thanks to Gene Czarinski for the patch.
469 Handle better attempts to transmit on interfaces which are
470 still doing DAD, and specifically do not just transmit
471 without setting source address and interface, since this
472 can cause very puzzling effects when a router
473 advertisement goes astray. Thanks again to Gene Czarinski.
475 Get RA timers right when there is more than one
476 dhcp-range on a subnet.
480 Do duplicate dhcp-host address check in --test mode.
482 Check that tftp-root directories are accessible before
483 start-up. Thanks to Daniel Veillard for the initial patch.
485 Allow more than one --tfp-root flag. The per-interface
486 stuff is pointless without that.
488 Add --bind-dynamic. A hybrid mode between the default and
489 --bind-interfaces which copes with dynamically created
492 A couple of fixes to the build system for Android. Thanks
493 to Metin Kaya for the patches.
495 Remove the interface:<interface> argument in --dhcp-range, and
496 the interface argument to --enable-tftp. These were a
497 still-born attempt to allow automatic isolated
498 configuration by libvirt, but have never (to my knowledge)
499 been used, had very strange semantics, and have been
500 superceded by other mechanisms.
502 Fixed bug logging filenames when duplicate dhcp-host
503 addresses are found. Thanks to John Hanks for the patch.
505 Fix regression in 2.61 which broke caching of CNAME
506 chains. Thanks to Atul Gupta for the bug report.
508 Allow the target of a --cname flag to be another --cname.
510 Teach DHCPv6 about the RFC 4242 information-refresh-time
511 option, and add parsing if the minutes, hours and days
512 format for options. Thanks to Francois-Xavier Le Bail for
515 Allow "w" (for week) as multiplier in lease times, as well
516 as seconds, minutes, hours and days. Álvaro Gámez Machado
517 spotted the ommission.
519 Update French translation. Thanks to Gildas Le Nadan.
521 Allow a DBus service name to be given with --enable-dbus
522 which overrides the default,
523 uk.org.thekelleys.dnsmasq. Thanks to Mathieu
524 Trudel-Lapierre for the patch.
526 Set the "prefix on-link" bit in Router
527 Advertisements. Thanks to Gui Iribarren for the patch.
531 Update German translation. Thanks to Conrad Kostecki.
533 Cope with router-solict packets wich don't have a valid
534 source address. Thanks to Vladislav Grishenko for the patch.
536 Fixed bug which caused missing periodic router
537 advertisements with some configurations. Thanks to
538 Vladislav Grishenko for the patch.
540 Fixed bug which broke DHCPv6/RA with prefix lengths
541 which are not divisible by 8. Thanks to Andre Coetzee
544 Fix non-response to router-solicitations when
545 router-advertisement configured, but DHCPv6 not
546 configured. Thanks to Marien Zwart for the patch.
548 Add --dns-rr, to allow arbitrary DNS resource records.
550 Fixed bug which broke RA scheduling when an interface had
551 two addresses in the same network. Thanks to Jim Bos for
552 his help nailing this.
555 Re-write interface discovery code on *BSD to use
556 getifaddrs. This is more portable, more straightforward,
557 and allows us to find the prefix length for IPv6
560 Add ra-names, ra-stateless and slaac keywords for DHCPv6.
561 Dnsmasq can now synthesise AAAA records for dual-stack
562 hosts which get IPv6 addresses via SLAAC. It is also now
563 possible to use SLAAC and stateless DHCPv6, and to
564 tell clients to use SLAAC addresses as well as DHCP ones.
565 Thanks to Dave Taht for help with this.
567 Add --dhcp-duid to allow DUID-EN uids to be used.
569 Explicity send DHCPv6 replies to the correct port, instead
570 of relying on clients to send requests with the correct
571 source address, since at least one client in the wild gets
572 this wrong. Thanks to Conrad Kostecki for help tracking
575 Send a preference value of 255 in DHCPv6 replies when
576 --dhcp-authoritative is in effect. This tells clients not
577 to wait around for other DHCP servers.
579 Better logging of DHCPv6 options.
581 Add --host-record. Thanks to Rob Zwissler for the
584 Invoke the DHCP script with action "tftp" when a TFTP file
585 transfer completes. The size of the file, address to which
586 it was sent and complete pathname are supplied. Note that
587 version 2.60 introduced some script incompatibilties
588 associated with DHCPv6, and this is a further change. To
589 be safe, scripts should ignore unknown actions, and if
590 not IPv6-aware, should exit if the environment
591 variable DNSMASQ_IAID is set. The use-case for this is
592 to track netboot/install. Suggestion from Shantanu
595 Update contrib/port-forward/dnsmasq-portforward to reflect
598 Set the environment variable DNSMASQ_LOG_DHCP when running
599 the script id --log-dhcp is in effect, so that script can
600 taylor their logging verbosity. Suggestion from Malte
603 Arrange that addresses specified with --listen-address
604 work even if there is no interface carrying the
605 address. This is chiefly useful for IPv4 loopback
606 addresses, where any address in 127.0.0.0/8 is a valid
607 loopback address, but normally only 127.0.0.1 appears on
608 the lo interface. Thanks to Mathieu Trudel-Lapierre for
609 the idea and initial patch.
611 Fix crash, introduced in 2.60, when a DHCPINFORM is
612 received from a network which has no valid dhcp-range.
613 Thanks to Stephane Glondu for the bug report.
615 Add a new DHCP lease time keyword, "deprecated" for
616 --dhcp-range. This is only valid for IPv6, and sets the
617 preffered lease time for both DHCP and RA to zero. The
618 effect is that clients can continue to use the address
619 for existing connections, but new connections will use
620 other addresses, if they exist. This makes hitless
621 renumbering at least possible.
623 Fix bug in address6_available() which caused DHCPv6 lease
624 aquisition to fail if more than one dhcp-range in use.
626 Provide RDNSS and DNSSL data in router advertisements,
627 using the settings provided for DHCP options
628 option6:domain-search and option6:dns-server.
630 Tweak logo/favicon.ico to add some transparency. Thanks to
631 SamLT for work on this.
633 Don't cache data from non-recursive nameservers, since it
634 may erroneously look like a valid CNAME to a non-exitant
635 name. Thanks to Ben Winslow for finding this.
637 Call SO_BINDTODEVICE on the DHCP socket(s) when doing DHCP
638 on exactly one interface and --bind-interfaces is set. This
639 makes the OpenStack use-case of one dnsmasq per virtual
640 interface work. This is only available on Linux; it's not
641 supported on other platforms. Thanks to Vishvananda Ishaya
642 and the OpenStack team for the suggestion.
644 Updated French translation. Thanks to Gildas Le Nadan.
646 Give correct from-cache answers to explict CNAME queries.
647 Thanks to Rob Zwissler for spotting this.
649 Add --tftp-lowercase option. Thanks to Oliver Rath for the
652 Ensure that the DBus DhcpLeaseUpdated events are generated
653 when a lease goes through INIT_REBOOT state, even if the
654 dhcp-script is not in use. Thanks to Antoaneta-Ecaterina
657 Fix failure of TFTP over IPv4 on OpenBSD platform. Thanks
658 to Brad Smith for spotting this.
662 Fix compilation problem in Mac OS X Lion. Thanks to Olaf
663 Flebbe for the patch.
665 Fix DHCP when using --listen-address with an IP address
666 which is not the primary address of an interface.
668 Add --dhcp-client-update option.
670 Add Lua integration. Dnsmasq can now execute a DHCP
671 lease-change script written in Lua. This needs to be
672 enabled at compile time by setting HAVE_LUASCRIPT in
673 src/config.h or running "make COPTS=-DHAVE_LUASCRIPT"
674 Thanks to Jan-Piet Mens for the idea and proof-of-concept
677 Tidied src/config.h to distinguish between
678 platform-dependent compile-time options which are selected
679 automatically, and builder-selectable compile time
680 options. Document the latter better, and describe how to
681 set them from the make command line.
683 Tidied up IPPROTO_IP/SOL_IP (and IPv6 equivalent)
684 confusion. IPPROTO_IP works everywhere now.
686 Set TOS on DHCP sockets, this improves things on busy
687 wireless networks. Thanks to Dave Taht for the patch.
689 Determine VERSION automatically based on git magic:
690 release tags or hash values.
692 Improve start-up speed when reading large hosts files
693 containing many distinct addresses.
695 Fix problem if dnsmasq is started without the stdin,
696 stdout and stderr file descriptors open. This can manifest
697 itself as 100% CPU use. Thanks to Chris Moore for finding
700 Fix shell-scripting bug in bld/pkg-wrapper. Thanks to
701 Mark Mitchell for the patch.
703 Allow the TFP server or boot server in --pxe-service, to
704 be a domain name instead of an IP address. This allows for
705 round-robin to multiple servers, in the same way as
706 --dhcp-boot. A good suggestion from Cristiano Cumer.
708 Support BUILDDIR variable in the Makefile. Allows builds
709 for multiple archs from the same source tree with eg.
710 make BUILDDIR=linux (relative to dnsmasq tree)
711 make BUILDDIR=/tmp/openbsd (absolute path)
712 If BUILDDIR is not set, compilation happens in the src
713 directory, as before. Suggestion from Mark Mitchell.
715 Support DHCPv6. Support is there for the sort of things
716 the existing v4 server does, including tags, options,
717 static addresses and relay support. Missing is prefix
718 delegation, which is probably not required in the dnsmasq
719 niche, and an easy way to accept prefix delegations from
720 an upstream DHCPv6 server, which is. Future plans include
721 support for DHCPv6 router option and MAC address option
722 (to make selecting clients by MAC address work like IPv4).
723 These will be added as the standards mature.
724 This code has been tested, but this is the first release,
725 so don't bet the farm on it just yet. Many thanks to all
726 testers who have got it this far.
728 Support IPv6 router advertisements. This is a
729 simple-minded implementation, aimed at providing the
730 vestigial RA needed to go alongside IPv6. Is picks up
731 configuration from the DHCPv6 conf, and should just need
732 enabling with --enable-ra.
734 Fix long-standing wrinkle with --localise-queries that
735 could result in wrong answers when DNS packets arrive
736 via an interface other than the expected one. Thanks to
737 Lorenzo Milesi and John Hanks for spotting this one.
739 Update French translation. Thanks to Gildas Le Nadan.
741 Update Polish translation. Thanks to Jan Psota.
745 Fix regression in 2.58 which caused failure to start up
746 with some combinations of dnsmasq config and IPv6 kernel
747 network config. Thanks to Brielle Bruns for the bug
750 Improve dnsmasq's behaviour when network interfaces are
751 still doing duplicate address detection (DAD). Previously,
752 dnsmasq would wait up to 20 seconds at start-up for the
753 DAD state to terminate. This is broken for bridge
754 interfaces on recent Linux kernels, which don't start DAD
755 until the bridge comes up, and so can take arbitrary
756 time. The new behaviour lets dnsmasq poll for an arbitrary
757 time whilst providing service on other interfaces. Thanks
758 to Stephen Hemminger for pointing out the problem.
762 Provide a definition of the SA_SIZE macro where it's
763 missing. Fixes build failure on openBSD.
765 Don't include a zero terminator at the end of messages
766 sent to /dev/log when /dev/log is a datagram socket.
767 Thanks to Didier Rabound for spotting the problem.
769 Add --dhcp-sequential-ip flag, to force allocation of IP
770 addresses in ascending order. Note that the default
771 pseudo-random mode is in general better but some
772 server-deployment applications need this.
774 Fix problem where a server-id of 0.0.0.0 is sent to a
775 client when a dhcp-relay is in use if a client renews a
776 lease after dnsmasq restart and before any clients on the
777 subnet get a new lease. Thanks to Mike Ruiz for assistance
778 in chasing this one down.
780 Don't return NXDOMAIN to an AAAA query if we have CNAME
781 which points to an A record only: NODATA is the correct
782 reply in this case. Thanks to Tom Fernandes for spotting
785 Relax the need to supply a netmask in --dhcp-range for
786 networks which use a DHCP relay. Whilst this is still
787 desireable, in the absence of a netmask dnsmasq will use
788 a default based on the class (A, B, or C) of the address.
789 This should at least remove a cause of mysterious failure
790 for people using RFC1918 addresses and relays.
792 Add support for Linux conntrack connection marking. If
793 enabled with --conntrack, the connection mark for incoming
794 DNS queries will be copied to the outgoing connections
795 used to answer those queries. This allows clever firewall
796 and accounting stuff. Only available if dnsmasq is
797 compiled with HAVE_CONNTRACK and adds a dependency on
798 libnetfilter-conntrack. Thanks to Ed Wildgoose for the
799 initial idea, testing and sponsorship of this function.
801 Provide a sane error message when someone attempts to
802 match a tag in --dhcp-host.
804 Tweak the behaviour of --domain-needed, to avoid problems
805 with recursive nameservers downstream of dnsmasq. The new
806 behaviour only stops A and AAAA queries, and returns
807 NODATA rather than NXDOMAIN replies.
809 Efficiency fix for very large DHCP configurations, thanks
810 to James Gartrell and Mike Ruiz for help with this.
812 Allow the TFTP-server address in --dhcp-boot to be a
813 domain-name which is looked up in /etc/hosts. This can
814 give multiple IP addresses which are used round-robin,
815 thus doing TFTP server load-balancing. Thanks to Sushil
816 Agrawal for the patch.
818 When two tagged dhcp-options for a particular option
819 number are both valid, use the one which is valid without
820 a tag from the dhcp-range. Allows overriding of the value
821 of a DHCP option for a particular host as well as
822 per-network values. So
823 --dhcp-range=set:interface1,......
824 --dhcp-host=set:myhost,.....
825 --dhcp-option=tag:interface1,option:nis-domain,"domain1"
826 --dhcp-option=tag:myhost,option:nis-domain,"domain2"
827 will set the NIS-domain to domain1 for hosts in the range, but
828 override that to domain2 for a particular host.
830 Fix bug which resulted in truncated files and timeouts for
831 some TFTP transfers. The bug only occurs with netascii
832 transfers and needs an unfortunate relationship between
833 file size, blocksize and the number of newlines in the
834 last block before it manifests itself. Many thanks to
835 Alkis Georgopoulos for spotting the problem and providing
836 a comprehensive test-case.
838 Fix regression in TFTP server on *BSD platforms introduced
839 in version 2.56, due to confusion with sockaddr
840 length. Many thanks to Loic Pefferkorn for finding this.
842 Support scope-ids in IPv6 addresses of nameservers from
843 /etc/resolv.conf and in --server options. Eg
844 nameserver fe80::202:a412:4512:7bbf%eth0 or
845 server=fe80::202:a412:4512:7bbf%eth0. Thanks to
846 Michael Stapelberg for the suggestion.
848 Update Polish translation, thanks to Jan Psota.
850 Update French translation. Thanks to Gildas Le Nadan.
854 Add patches to allow build under Android.
856 Provide our own header for the DNS protocol, rather than
857 relying on arpa/nameser.h. This has proved more or less
858 defective over the years and the final straw is that it's
859 effectively empty on Android.
861 Fix regression in 2.56 which caused hex constants in
862 configuration to be rejected if they contain the '*'
865 Correct wrong casts of arguments to ctype.h functions,
866 isdigit(), isxdigit() etc. Thanks to Matthias Andree for
869 Allow build with IDN support independently from i18n.
870 IDN support continues to be included automatically
871 when i18n is included.
872 'make COPTS=-DHAVE_IDN' is the magic incantation.
874 Modify check on extraneous command line junk (added in
875 2.56) so that it doesn't complain about extra _empty_
876 arguments. Otherwise this breaks libvirt.
880 Add a patch to allow dnsmasq to get interface names right in a
881 Solaris zone. Thanks to Dj Padzensky for this.
883 Improve data-type parsing heuristics so that
884 --dhcp-option=option:domain-search,.
885 treats the value as a string and not an IP address.
886 Thanks to Clemens Fischer for spotting that.
888 Add IPv6 support to the TFTP server. Many thanks to Jan
889 'RedBully' Seiffert for the patches.
891 Log DNS queries at level LOG_INFO, rather then
892 LOG_DEBUG. This makes things consistent with DHCP
893 logging. Thanks to Adam Pribyl for spotting the problem.
895 Ensure that dnsmasq terminates cleanly when using
896 --syslog-async even if it cannot make a connection to the
899 Add --add-mac option. This is to support currently
900 experimental DNS filtering facilities. Thanks to Benjamin
901 Petrin for the orignal patch.
903 Fix bug which meant that tags were ignored in dhcp-range
904 configuration specifying PXE-proxy service. Thanks to
905 Cristiano Cumer for spotting this.
907 Raise an error if there is extra junk, not part of an
908 option, on the command line.
910 Flag a couple of log messages in cache.c as coming from
911 the DHCP subsystem. Thanks to Olaf Westrik for the patch.
913 Omit timestamps from logs when a) logging to stderr and
914 b) --keep-in-forground is set. The logging facility on the
915 other end of stderr can be assumned to supply them. Thanks
916 to John Hallam for the patch.
918 Don't complain about strings longer than 255 characters in
919 --txt-record, just split the long strings into 255
920 character chunks instead.
922 Fix crash on double-free. This bug can only happen when
923 dhcp-script is in use and then only in rare circumstances
924 triggered by high DHCP transaction rate and a slow
925 script. Thanks to Ferenc Wagner for finding the problem.
927 Only log that a file has been sent by TFTP after the
928 transfer has completed succesfully.
930 A good suggestion from Ferenc Wagner: extend
931 the --domain option to allow this sort of thing:
932 --domain=thekelleys.org.uk,192.168.0.0/24,local
933 which automatically creates
934 --local=/thekelleys.org.uk/
935 --local=/0.168.192.in-addr.arpa/
937 Tighten up syntax checking of hex contants in the config
938 file. Thanks to Fred Damen for spotting this.
940 Add dnsmasq logo/icon, contributed by Justin Swift. Many
943 Never cache DNS replies which have the 'cd' bit set, or
944 which result from queries forwarded with the 'cd' bit
945 set. The 'cd' bit instructs a DNSSEC validating server
946 upstream to ignore signature failures and return replies
947 anyway. Without this change it's possible to pollute the
948 dnsmasq cache with bad data by making a query with the
949 'cd' bit set and subsequent queries would return this data
950 without its being marked as suspect. Thanks to Anders
951 Kaseorg for pointing out this problem.
953 Add --proxy-dnssec flag, for compliance with RFC
954 4035. Dnsmasq will now clear the 'ad' bit in answers returned
955 from upstream validating nameservers unless this option is
958 Allow a filename of "-" for --conf-file to read
959 stdin. Suggestion from Timothy Redaelli.
961 Rotate the order of SRV records in replies, to provide
962 round-robin load balancing when all the priorities are
963 equal. Thanks to Peter McKinney for the suggestion.
966 contrib/MacOSX-launchd/uk.org.thekelleys.dnsmasq.plist
967 so that it doesn't log all queries to a file by
968 default. Thanks again to Peter McKinney.
970 By default, setting an IPv4 address for a domain but not
971 an IPv6 address causes dnsmasq to return
972 an NODATA reply for IPv6 (or vice-versa). So
973 --address=/google.com/1.2.3.4 stops IPv6 queries for
974 *google.com from being forwarded. Make it possible to
975 override this behaviour by defining the sematics if the
976 same domain appears in both --server and --address.
977 In that case, the --address has priority for the address
978 family in which is appears, but the --server has priority
979 of the address family which doesn't appear in --adddress
981 --address=/google.com/1.2.3.4
982 --server=/google.com/#
983 will return 1.2.3.4 for IPv4 queries for *.google.com but
984 forward IPv6 queries to the normal upstream nameserver.
985 Similarly when setting an IPv6 address
986 only this will allow forwarding of IPv4 queries. Thanks to
987 William for pointing out the need for this.
989 Allow more than one --dhcp-optsfile and --dhcp-hostsfile
990 and make them understand directories as arguments in the
991 same way as --addn-hosts. Suggestion from John Hanks.
993 Ignore rebinding requests for leases we don't know
994 about. Rebind is broadcast, so we might get to overhear a
995 request meant for another DHCP server. NAKing this is
996 wrong. Thanks to Brad D'Hondt for assistance with this.
998 Fix cosmetic bug which produced strange output when
999 dumping cache statistics with some configurations. Thanks
1000 to Fedor Kozhevnikov for spotting this.
1004 Fix crash when /etc/ethers is in use. Thanks to
1005 Gianluigi Tiesi for finding this.
1007 Fix crash in netlink_multicast(). Thanks to Arno Wald for
1010 Allow the empty domain "." in dhcp domain-search (119)
1015 There is no version 2.54 to avoid confusion with 2.53,
1016 which incorrectly identifies itself as 2.54.
1020 Fix failure to compile on Debian/kFreeBSD. Thanks to
1021 Axel Beckert and Petr Salinger.
1023 Fix code to avoid scary strict-aliasing warnings
1024 generated by gcc 4.4.
1026 Added FAQ entry warning about DHCP failures with Vista
1027 when firewalls block 255.255.255.255.
1029 Fixed bug which caused bad things to happen if a
1030 resolv.conf file which exists is subsequently removed.
1031 Thanks to Nikolai Saoukh for the patch.
1033 Rationalised the DHCP tag system. Every configuration item
1034 which can set a tag does so by adding "set:<tag>" and
1035 every configuration item which is conditional on a tag is
1036 made so by "tag:<tag>". The NOT operator changes to '!',
1037 which is a bit more intuitive too. Dhcp-host directives
1038 can set more than one tag now. The old '#' NOT,
1039 "net:" prefix and no-prefixes are still honoured, so
1040 no existing config file needs to be changed, but
1041 the documentation and new-style config files should be
1042 much less confusing.
1044 Added --tag-if to allow boolean operations on tags.
1045 This allows complicated logic to be clearer and more
1046 general. A great suggestion from Richard Voigt.
1048 Add broadcast/unicast information to DHCP logging.
1050 Allow --dhcp-broadcast to be unconditional.
1052 Fixed incorrect behaviour with NOT <tag> conditionals in
1053 dhcp-options. Thanks to Max Turkewitz for assistance
1056 If we send vendor-class encapsulated options based on the
1057 vendor-class supplied by the client, and no explicit
1058 vendor-class option is given, echo back the vendor-class
1061 Fix bug which stopped dnsmasq from matching both a
1062 circuitid and a remoteid. Thanks to Ignacio Bravo for
1065 Add --dhcp-proxy, which makes it possible to configure
1066 dnsmasq to use a DHCP relay agent as a full proxy, with
1067 all DHCP messages passing through the proxy. This is
1068 useful if the relay adds extra information to the packets
1069 it forwards, but cannot be configured with the RFC 5107
1070 server-override option.
1072 Added interface:<iface name> part to dhcp-range. The
1073 semantics of this are very odd at first sight, but it
1074 allows a single line of the form
1075 dhcp-range=interface:virt0,192.168.0.4,192.168.0.200
1076 to be added to dnsmasq configuration which then supplies
1077 DHCP and DNS services to that interface, without affecting
1078 what services are supplied to other interfaces and
1079 irrespective of the existance or lack of
1080 interface=<interface>
1081 lines elsewhere in the dnsmasq configuration. The idea is
1082 that such a line can be added automatically by libvirt
1083 or equivalent systems, without disturbing any manual
1086 Similarly to the above, allow --enable-tftp=<interface>
1088 Allow a TFTP root to be set separately for requests via
1089 different interfaces, --tftp-root=<path>,<interface>
1091 Correctly handle and log clashes between CNAMES and
1092 DNS names being given to DHCP leases. This fixes a bug
1093 which caused nonsense IP addresses to be logged. Thanks to
1094 Sergei Zhirikov for finding and analysing the problem.
1096 Tweak flush_log so as to avoid leaving the log
1097 file in non-blocking mode. O_NONBLOCK is a property of the
1098 file, not the process/descriptor.
1100 Fix contrib/Solaris10/create_package
1101 (/usr/man -> /usr/share/man) Thanks to Vita Batrla.
1103 Fix a problem where, if a client got a lease, then went
1104 to another subnet and got another lease, then moved back,
1105 it couldn't resume the old lease, but would instead get
1106 a new address. Thanks to Leonardo Rodrigues for spotting
1107 this and testing the fix.
1109 Fix weird bug which sometimes omitted certain characters
1110 from the start of quoted strings in dhcp-options. Thanks
1111 to Dayton Turner for spotting the problem.
1113 Add facility to redirect some domains to the standard
1114 upstream servers: this allows something like
1115 --server=/google.com/1.2.3.4 --server=/www.google.com/#
1116 which will send queries for *.google.com to 1.2.3.4,
1117 except *www.google.com which will be forwarded as usual.
1118 Thanks to AJ Weber for prompting this addition.
1120 Improve the hash-algorithm used to generate IP addresses
1121 from MAC addresses during initial DHCP address
1122 allocation. This improves performance when large numbers
1123 of hosts with similar MAC addresses all try and get an IP
1124 address at the same time. Thanks to Paul Smith for his
1127 Tweak DHCP code so that --bridge-interface can be used to
1128 select which IP alias of an interface should be used for
1129 DHCP purposes on Linux. If eth0 has an alias eth0:dhcp
1130 then adding --bridge-interface=eth0:dhcp,eth0 will use
1131 the address of eth0:dhcp to determine the correct subnet
1132 for DHCP address allocation. Thanks to Pawel Golaszewski
1133 for prompting this and Eric Cooper for further testing.
1135 Add --dhcp-generate-names. Suggestion by Ferenc Wagner.
1137 Tweak DNS server selection algorithm when there is more
1138 than one server available for a domain, eg.
1139 --server=/mydomain/1.1.1.1
1140 --server=/mydomain/2.2.2.2
1141 Thanks to Alberto Cuesta-Canada for spotting a weakness
1144 Add --max-ttl. Thanks to Fredrik Ringertz for the patch.
1146 Allow --log-facility=- to force all logging to
1147 stderr. Suggestion from Clemens Fischer.
1149 Fix regression which caused configuration like
1150 --address=/.domain.com/1.2.3.4 to be rejected. The dot to the
1151 left of the domain has been implied and not required for a
1152 long time, but it should be accepted for backward
1153 compatibility. Thanks to Andrew Burcin for spotting this.
1155 Add --rebind-domain-ok and --rebind-localhost-ok.
1156 Suggestion from Clemens Fischer.
1158 Log replies to queries of type TXT, when --log-queries
1161 Fix compiler warnings when compiled with -DNO_DHCP. Thanks
1162 to Shantanu Gadgil for the patch.
1164 Updated French translation. Thanks to Gildas Le Nadan.
1166 Updated Polish translation. Thanks to Jan Psota.
1168 Updated German translation. Thanks to Matthias Andree.
1170 Added contrib/static-arp, thanks to Darren Hoo.
1172 Fix corruption of the domain when a name from /etc/hosts
1173 overrides one supplied by a DHCP client. Thanks to Fedor
1174 Kozhevnikov for spotting the problem.
1176 Updated Spanish translation. Thanks to Chris Chatham.
1180 Work around a Linux kernel bug which insists that the
1181 length of the option passed to setsockopt must be at least
1182 sizeof(int) bytes, even if we're calling SO_BINDTODEVICE
1183 and the device name is "lo". Note that this is fixed
1184 in kernel 2.6.31, but the workaround is harmless and
1185 allows earlier kernels to be used. Also fix dnsmasq
1186 bug which reported the wrong address when this failed.
1187 Thanks to Fedor for finding this.
1189 The API for IPv6 PKTINFO changed around Linux kernel
1190 2.6.14. Workaround the case where dnsmasq is compiled
1191 against newer headers, but then run on an old kernel:
1192 necessary for some *WRT distros.
1194 Re-read the set of network interfaces when re-loading
1195 /etc/resolv.conf if --bind-interfaces is not set. This
1196 handles the case that loopback interfaces do not exist
1197 when dnsmasq is first started.
1199 Tweak the PXE code to support port 4011. This should
1200 reduce broadcasts and make things more reliable when other
1201 servers are around. It also improves inter-operability
1202 with certain clients.
1204 Make a pxe-service configuration with no filename or boot
1205 service type legal: this does a local boot. eg.
1206 pxe-service=x86PC, "Local boot"
1208 Be more conservative in detecting "A for A"
1209 queries. Dnsmasq checks if the name in a type=A query looks
1210 like a dotted-quad IP address and answers the query itself
1211 if so, rather than forwarding it. Previously dnsmasq
1212 relied in the library function inet_addr() to convert
1213 addresses, and that will accept some things which are
1214 confusing in this context, like 1.2.3 or even just
1215 1234. Now we only do A for A processing for four decimal
1216 numbers delimited by dots.
1218 A couple of tweaks to fix compilation on Solaris. Thanks
1219 to Joel Macklow for help with this.
1221 Another Solaris compilation tweak, needed for Solaris
1222 2009.06. Thanks to Lee Essen for that.
1224 Added extract packaging stuff from Lee Essen to
1227 Increased the default limit on number of leases to 1000
1228 (from 150). This is mainly a defence against DoS attacks,
1229 and for the average "one for two class C networks"
1230 installation, IP address exhaustion does that just as
1231 well. Making the limit greater than the number of IP
1232 addresses available in such an installation removes a
1233 surprise which otherwise can catch people out.
1235 Removed extraneous trailing space in the value of the
1236 DNSMASQ_TIME_REMAINING DNSMASQ_LEASE_LENGTH and
1237 DNSMASQ_LEASE_EXPIRES environment variables. Thanks to
1238 Gildas Le Nadan for spotting this.
1240 Provide the network-id tags for a DHCP transaction to
1241 the lease-change script in the environment variable
1242 DNSMASQ_TAGS. A good suggestion from Gildas Le Nadan.
1244 Add support for RFC3925 "Vendor-Identifying Vendor
1245 Options". The syntax looks like this:
1246 --dhcp-option=vi-encap:<enterprise number>, .........
1248 Add support to --dhcp-match to allow matching against
1249 RFC3925 "Vendor-Identifying Vendor Classes". The syntax
1251 --dhcp-match=tag,vi-encap<enterprise number>, <value>
1253 Add some application specific code to assist in
1254 implementing the Broadband forum TR069 CPE-WAN
1255 specification. The details are in contrib/CPE-WAN/README
1257 Increase the default DNS packet size limit to 4096, as
1258 recommended by RFC5625 section 4.4.3. This can be
1259 reconfigured using --edns-packet-max if needed. Thanks to
1260 Francis Dupont for pointing this out.
1262 Rewrite query-ids even for TSIG signed packets, since
1263 this is allowed by RFC5625 section 4.5.
1265 Use getopt_long by default on OS X. It has been supported
1266 since version 10.3.0. Thanks to Arek Dreyer for spotting
1269 Added up-to-date startup configuration for MacOSX/launchd
1270 in contrib/MacOSX-launchd. Thanks to Arek Dreyer for
1273 Fix link error when including Dbus but excluding DHCP.
1274 Thanks to Oschtan for the bug report.
1276 Updated French translation. Thanks to Gildas Le Nadan.
1278 Updated Polish translation. Thanks to Jan Psota.
1280 Updated Spanish translation. Thanks to Chris Chatham.
1282 Fixed confusion about domains, when looking up DHCP hosts
1283 in /etc/hosts. This could cause spurious "Ignoring
1284 domain..." messages. Thanks to Fedor Kozhevnikov for
1285 finding and analysing the problem.
1289 Add support for internationalised DNS. Non-ASCII characters
1290 in domain names found in /etc/hosts, /etc/ethers and
1291 /etc/dnsmasq.conf will be correctly handled by translation to
1292 punycode, as specified in RFC3490. This function is only
1293 available if dnsmasq is compiled with internationalisation
1294 support, and adds a dependency on GNU libidn. Without i18n
1295 support, dnsmasq continues to be compilable with just
1296 standard tools. Thanks to Yves Dorfsman for the
1299 Add two more environment variables for lease-change scripts:
1300 First, DNSMASQ_SUPPLIED_HOSTNAME; this is set to the hostname
1301 supplied by a client, even if the actual hostname used is
1302 over-ridden by dhcp-host or dhcp-ignore-names directives.
1303 Also DNSMASQ_RELAY_ADDRESS which gives the address of
1304 a DHCP relay, if used.
1305 Suggestions from Michael Rack.
1307 Fix regression which broke echo of relay-agent
1308 options. Thanks to Michael Rack for spotting this.
1310 Don't treat option 67 as being interchangeable with
1311 dhcp-boot parameters if it's specified as
1314 Make the code to call scripts on lease-change compile-time
1315 optional. It can be switched off by editing src/config.h
1316 or building with "make COPTS=-DNO_SCRIPT".
1318 Make the TFTP server cope with filenames from Windows/DOS
1319 which use '\' as pathname separator. Thanks to Ralf for
1322 Updated Polish translation. Thanks to Jan Psota.
1324 Warn if an IP address is duplicated in /etc/ethers. Thanks
1325 to Felix Schwarz for pointing this out.
1327 Teach --conf-dir to take an option list of file suffices
1328 which will be ignored when scanning the directory. Useful
1329 for backup files etc. Thanks to Helmut Hullen for the
1332 Add new DHCP option named tftpserver-address, which
1333 corresponds to the third argument of dhcp-boot. This
1334 allows the complete functionality of dhcp-boot to be
1335 replicated with dhcp-option. Useful when using
1338 Test which upstream nameserver to use every 10 seconds
1339 or 50 queries and not just when a query times out and
1340 is retried. This should improve performance when there
1341 is a slow nameserver in the list. Thanks to Joe for the
1344 Don't do any PXE processing, even for clients with the
1345 correct vendorclass, unless at least one pxe-prompt or
1346 pxe-service option is given. This stops dnsmasq
1347 interfering with proxy PXE subsystems when it is just
1348 the DHCP server. Thanks to Spencer Clark for spotting this.
1350 Limit the blocksize used for TFTP transfers to a value
1351 which avoids packet fragmentation, based on the MTU of the
1352 local interface. Many netboot ROMs can't cope with
1355 Honour dhcp-ignore configuration for PXE and proxy-PXE
1356 requests. Thanks to Niels Basjes for the bug report.
1358 Updated French translation. Thanks to Gildas Le Nadan.
1362 Fix security problem which allowed any host permitted to
1363 do TFTP to possibly compromise dnsmasq by remote buffer
1364 overflow when TFTP enabled. Thanks to Core Security
1365 Technologies and Iván Arce, Pablo Hernán Jorge, Alejandro
1366 Pablo Rodriguez, Martín Coco, Alberto Soliño Testa and
1367 Pablo Annetta. This problem has Bugtraq id: 36121
1370 Fix a problem which allowed a malicious TFTP client to
1371 crash dnsmasq. Thanks to Steve Grubb at Red Hat for
1372 spotting this. This problem has Bugtraq id: 36120 and
1377 Fix regression in 2.48 which disables the lease-change
1378 script. Thanks to Jose Luis Duran for spotting this.
1380 Log TFTP "file not found" errors. These were not logged,
1381 since a normal PXELinux boot generates many of them, but
1382 the lack of the messages seems to be more confusing than
1383 routinely seeing them when there is no real error.
1385 Update Spanish translation. Thanks to Chris Chatham.
1389 Archived the extensive, backwards, changelog to
1390 CHANGELOG.archive. The current changelog now runs from
1391 version 2.43 and runs conventionally.
1393 Fixed bug which broke binding of servers to physical
1394 interfaces when interface names were longer than four
1395 characters. Thanks to MURASE Katsunori for the patch.
1397 Fixed netlink code to check that messages come from the
1398 correct source, and not another userspace process. Thanks
1399 to Steve Grubb for the patch.
1401 Maintainability drive: removed bug and missing feature
1402 workarounds for some old platforms. Solaris 9, OpenBSD
1403 older than 4.1, Glibc older than 2.2, Linux 2.2.x and
1404 DBus older than 1.1.x are no longer supported.
1406 Don't read included configuration files more than once:
1407 allows complex configuration structures without problems.
1409 Mark log messages from the various subsystems in dnsmasq:
1410 messages from the DHCP subsystem now have the ident string
1411 "dnsmasq-dhcp" and messages from TFTP have ident
1412 "dnsmasq-tftp". Thanks to Olaf Westrik for the patch.
1414 Fix possible infinite DHCP protocol loop when an IP
1415 address nailed to a hostname (not a MAC address) and a
1416 host sometimes provides the name, sometimes not.
1418 Allow --addn-hosts to take a directory: all the files
1419 in the directory are read. Thanks to Phil Cornelius for
1422 Support --bridge-interface on all platforms, not just BSD.
1424 Added support for advanced PXE functions. It's now
1425 possible to define a prompt and menu options which will
1426 be displayed when a client PXE boots. It's also possible to
1427 hand-off booting to other boot servers. Proxy-DHCP, where
1428 dnsmasq just supplies the PXE information and another DHCP
1429 server does address allocation, is also allowed. See the
1430 --pxe-prompt and --pxe-service keywords. Thanks to
1431 Alkis Georgopoulos for the suggestion and Guilherme Moro
1432 and Michael Brown for assistance.
1434 Improvements to DHCP logging. Thanks to Tom Metro for
1437 Add ability to build dnsmasq without DHCP support. To do
1438 this, edit src/config.h or build with
1439 "make COPTS=-DNO_DHCP". Thanks to Mahavir Jain for the patch.
1441 Added --test command-line switch - syntax check
1442 configuration files only.
1444 Updated French translation. Thanks to Gildas Le Nadan.
1448 Updated French translation. Thanks to Gildas Le Nadan.
1450 Fixed interface enumeration code to work on NetBSD
1451 5.0. Thanks to Roy Marples for the patch.
1453 Updated config.h to use the same location for the lease
1454 file on NetBSD as the other *BSD variants. Also allow
1455 LEASEFILE and CONFFILE symbols to be overriden in CFLAGS.
1457 Handle duplicate address detection on IPv6 more
1458 intelligently. In IPv6, an interface can have an address
1459 which is not usable, because it is still undergoing DAD
1460 (such addresses are marked "tentative"). Attempting to
1461 bind to an address in this state returns an error,
1462 EADDRNOTAVAIL. Previously, on getting such an error,
1463 dnsmasq would silently abandon the address, and never
1464 listen on it. Now, it retries once per second for 20
1465 seconds before generating a fatal error. 20 seconds should
1466 be long enough for any DAD process to complete, but can be
1467 adjusted in src/config.h if necessary. Thanks to Martin
1468 Krafft for the bug report.
1470 Add DBus introspection. Patch from Jeremy Laine.
1472 Update Dbus configuration file. Patch from Colin Walters.
1474 http://bugs.freedesktop.org/show_bug.cgi?id=18961
1476 Support arbitrarily encapsulated DHCP options, suggestion
1477 and initial patch from Samium Gromoff. This is useful for
1478 (eg) gPXE, which expect all its private options to be
1479 encapsulated inside a single option 175. So, eg,
1481 dhcp-option = encap:175, 190, "iscsi-client0"
1482 dhcp-option = encap:175, 191, "iscsi-client0-secret"
1484 will provide iSCSI parameters to gPXE.
1486 Enhance --dhcp-match to allow testing of the contents of a
1487 client-sent option, as well as its presence. This
1488 application in mind for this is RFC 4578
1489 client-architecture specifiers, but it's generally useful.
1490 Joey Korkames suggested the enhancement.
1492 Move from using the IP_XMIT_IF ioctl to IP_BOUND_IF on
1493 OpenSolaris. Thanks to Bastian Machek for the heads-up.
1495 No longer complain about blank lines in
1496 /etc/ethers. Thanks to Jon Nelson for the patch.
1498 Fix binding of servers to physical devices, eg
1499 --server=/domain/1.2.3.4@eth0 which was broken from 2.43
1500 onwards unless --query-port=0 set. Thanks to Peter Naulls
1503 Reply to DHCPINFORM requests even when the supplied ciaddr
1504 doesn't fall in any dhcp-range. In this case it's not
1505 possible to supply a complete configuration, but
1506 individually-configured options (eg PAC) may be useful.
1508 Allow the source address of an alias to be a range:
1509 --alias=192.168.0.0,10.0.0.0,255.255.255.0 maps the whole
1510 subnet 192.168.0.0->192.168.0.255 to 10.0.0.0->10.0.0.255,
1512 --alias=192.168.0.10-192.168.0.40,10.0.0.0,255.255.255.0
1513 maps only the 192.168.0.10->192.168.0.40 region. Thanks to
1514 Ib Uhrskov for the suggestion.
1516 Don't dynamically allocate DHCP addresses which may break
1517 Windows. Addresses which end in .255 or .0 are broken in
1518 Windows even when using supernetting.
1519 --dhcp-range=192.168.0.1,192.168.1.254,255,255,254.0 means
1520 192.168.0.255 is a valid IP address, but not for Windows.
1521 See Microsoft KB281579. We therefore no longer allocate
1522 these addresses to avoid hard-to-diagnose problems.
1524 Update Polish translation. Thanks to Jan Psota.
1526 Delete the PID-file when dnsmasq shuts down. Note that by
1527 this time, dnsmasq is normally not running as root, so
1528 this will fail if the PID-file is stored in a root-owned
1529 directory; such failure is silently ignored. To take
1530 advantage of this feature, the PID-file must be stored in a
1531 directory owned and write-able by the user running
1536 Allow --bootp-dynamic to take a netid tag, so that it may
1537 be selectively enabled. Thanks to Olaf Westrik for the
1540 Remove ISC-leasefile reading code. This has been
1541 deprecated for a long time, and last time I removed it, it
1542 ended up going back by request of one user. This time,
1543 it's gone for good; otherwise it would need to be
1544 re-worked to support multiple domains (see below).
1546 Support DHCP clients in multiple DNS domains. This is a
1547 long-standing request. Clients are assigned to a domain
1548 based in their IP address.
1550 Add --dhcp-fqdn flag, which changes behaviour if DNS names
1551 assigned to DHCP clients. When this is set, there must be
1552 a domain associated with each client, and only
1553 fully-qualified domain names are added to the DNS. The
1554 advantage is that the only the FQDN needs to be unique,
1555 so that two or more DHCP clients can share a hostname, as
1556 long as they are in different domains.
1558 Set environment variable DNSMASQ_DOMAIN when invoking
1559 lease-change script. This may be useful information to
1560 have now that it's variable.
1562 Tighten up data-checking code for DNS packet
1563 handling. Thanks to Steve Dodd who found certain illegal
1564 packets which could crash dnsmasq. No memory overwrite was
1565 possible, so this is not a security issue beyond the DoS
1568 Update example config dhcp option 47, the previous
1569 suggestion generated an illegal, zero-length,
1570 option. Thanks to Matthias Andree for finding this.
1572 Rewrite hosts-file reading code to remove the limit of
1573 1024 characters per line. John C Meuser found this.
1575 Create a net-id tag with the name of the interface on
1576 which the DHCP request was received.
1578 Fixed minor memory leak in DBus code, thanks to Jeremy
1579 Laine for the patch.
1581 Emit DBus signals as the DHCP lease database
1582 changes. Thanks to Jeremy Laine for the patch.
1584 Allow for more that one MAC address in a dhcp-host
1585 line. This configuration tells dnsmasq that it's OK to
1586 abandon a DHCP lease of the fixed address to one MAC
1587 address, if another MAC address in the dhcp-host statement
1588 asks for an address. This is useful to give a fixed
1589 address to a host which has two network interfaces
1590 (say, a laptop with wired and wireless interfaces.)
1591 It's very important to ensure that only one interface
1592 at a time is up, since dnsmasq abandons the first lease
1593 and re-uses the address before the leased time has
1594 elapsed. John Gray suggested this.
1596 Tweak the response to a DHCP request packet with a wrong
1597 server-id when --dhcp-authoritative is set; dnsmasq now
1598 returns a DHCPNAK, rather than silently ignoring the
1599 packet. Thanks to Chris Marget for spotting this
1602 Add --cname option. This provides a limited alias
1603 function, usable for DHCP names. Thanks to AJ Weber for
1604 suggestions on this.
1606 Updated contrib/webmin with latest version from Neil
1609 Updated Polish translation. Thanks to Jan Psota.
1611 Correct the text names for DHCP options 64 and 65 to be
1612 "nis+-domain" and "nis+-servers".
1614 Updated Spanish translation. Thanks to Chris Chatham.
1616 Force re-reading of /etc/resolv.conf when an "interface
1621 Fix total DNS failure in release 2.44 unless --min-port
1622 specified. Thanks to Steven Barth and Grant Coady for
1623 bugreport. Also reject out-of-range port spec, which could
1624 break things too: suggestion from Gilles Espinasse.
1628 Fix crash when unknown client attempts to renew a DHCP
1629 lease, problem introduced in version 2.43. Thanks to
1630 Carlos Carvalho for help chasing this down.
1632 Fix potential crash when a host which doesn't have a lease
1633 does DHCPINFORM. Again introduced in 2.43. This bug has
1634 never been reported in the wild.
1636 Fix crash in netlink code introduced in 2.43. Thanks to
1637 Jean Wolter for finding this.
1639 Change implementation of min_port to work even if min-port
1642 Patch to enable compilation of latest Mac OS X. Thanks to
1645 Update Spanish translation. Thanks to Christopher Chatham.
1649 Updated Polish translation. Thanks to Jan Psota.
1651 Flag errors when configuration options are repeated
1654 Further tweaks for GNU/kFreeBSD
1656 Add --no-wrap to msgmerge call - provides nicer .po file
1659 Honour lease-time spec in dhcp-host lines even for
1660 BOOTP. The user is assumed to known what they are doing in
1661 this case. (Hosts without the time spec still get infinite
1662 leases for BOOTP, over-riding the default in the
1663 dhcp-range.) Thanks to Peter Katzmann for uncovering this.
1665 Fix problem matching relay-agent ids. Thanks to Michael
1666 Rack for the bug report.
1668 Add --naptr-record option. Suggestion from Johan
1671 Implement RFC 5107 server-id-override DHCP relay agent
1674 Apply patches from Stefan Kruger for compilation on
1675 Solaris 10 under Sun studio.
1677 Yet more tweaking of Linux capability code, to suppress
1678 pointless wingeing from kernel 2.6.25 and above.
1680 Improve error checking during startup. Previously, some
1681 errors which occurred during startup would be worked
1682 around, with dnsmasq still starting up. Some were logged,
1683 some silent. Now, they all cause a fatal error and dnsmasq
1684 terminates with a non-zero exit code. The errors are those
1685 associated with changing uid and gid, setting process
1686 capabilities and writing the pidfile. Thanks to Uwe
1687 Gansert and the Suse security team for pointing out
1688 this improvement, and Bill Reimers for good implementation
1691 Provide NO_LARGEFILE compile option to switch off largefile
1692 support when compiling against versions of uclibc which
1693 don't support it. Thanks to Stephane Billiart for the patch.
1695 Implement random source ports for interactions with
1696 upstream nameservers. New spoofing attacks have been found
1697 against nameservers which do not do this, though it is not
1698 clear if dnsmasq is vulnerable, since to doesn't implement
1699 recursion. By default dnsmasq will now use a different
1700 source port (and socket) for each query it sends
1701 upstream. This behaviour can suppressed using the
1702 --query-port option, and the old default behaviour
1703 restored using --query-port=0. Explicit source-port
1704 specifications in --server configs are still honoured.
1706 Replace the random number generator, for better
1707 security. On most BSD systems, dnsmasq uses the
1708 arc4random() RNG, which is secure, but on other platforms,
1709 it relied on the C-library RNG, which may be
1710 guessable and therefore allow spoofing. This release
1711 replaces the libc RNG with the SURF RNG, from Daniel
1712 J. Berstein's DJBDNS package.
1714 Don't attempt to change user or group or set capabilities
1715 if dnsmasq is run as a non-root user. Without this, the
1716 change from soft to hard errors when these fail causes
1717 problems for non-root daemons listening on high
1718 ports. Thanks to Patrick McLean for spotting this.
1720 Updated French translation. Thanks to Gildas Le Nadan.
1724 The changelog for version 2.42 and earlier is
1725 available in CHANGELOG.archive.
projects / people / ms / dnsmasq.git / blob