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CHANGELOG
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version 2.73
Fix crash at startup when an empty suffix is supplied to
--conf-dir, also trivial memory leak. Thanks to
Tomas Hozza for spotting this.
Remove floor of 4096 on advertised EDNS0 packet size when
DNSSEC in use, the original rationale for this has long gone.
Thanks to Anders Kaseorg for spotting this.
Use inotify for checking on updates to /etc/resolv.conf and
friends under Linux. This fixes race conditions when the files are
updated rapidly and saves CPU by noy polling. To build
a binary that runs on old Linux kernels without inotify,
use make COPTS=-DNO_INOTIFY
Fix breakage of --domain=<domain>,<subnet>,local - only reverse
queries were intercepted. THis appears to have been broken
since 2.69. Thanks to Josh Stone for finding the bug.
Eliminate IPv6 privacy addresses and deprecated addresses from
the answers given by --interface-name. Note that reverse queries
(ie looking for names, given addresses) are not affected.
Thanks to Michael Gorbach for the suggestion.
Fix crash in DNSSEC code with long RRs. Thanks to Marco Davids
for the bug report.
Add --ignore-address option. Ignore replies to A-record
queries which include the specified address. No error is
generated, dnsmasq simply continues to listen for another
reply. This is useful to defeat blocking strategies which
rely on quickly supplying a forged answer to a DNS
request for certain domains, before the correct answer can
arrive. Thanks to Glen Huang for the patch.
Revisit the part of DNSSEC validation which determines if an
unsigned answer is legit, or is in some part of the DNS
tree which should be signed. Dnsmasq now works from the
DNS root downward looking for the limit of signed
delegations, rather than working bottom up. This is
both more correct, and less likely to trip over broken
nameservers in the unsigned parts of the DNS tree
which don't respond well to DNSSEC queries.
Add --log-queries=extra option, which makes logs easier
to search automatically.
Add --min-cache-ttl option. I've resisted this for a long
time, on the grounds that disbelieving TTLs is never a
good idea, but I've been persuaded that there are
sometimes reasons to do it. (Step forward, GFW).
To avoid misuse, there's a hard limit on the TTL
floor of one hour. Thansk to RinSatsuki for the patch.
Cope with multiple interfaces with the same link-local
address. (IPv6 addresses are scoped, so this is allowed.)
Thanks to Cory Benfield for help with this.
Add --dhcp-hostsdir. This allows addition of new host
configurations to a running dnsmasq instance much more
cheaply than having dnsmasq re-read all its existing
configuration each time.
Don't reply to DHCPv6 SOLICIT messages if we're not
configured to do stateful DHCPv6. Thanks to Win King Wan
for the patch.
Fix broken DNSSEC validation of ECDSA signatures.
version 2.72
Add ra-advrouter mode, for RFC-3775 mobile IPv6 support.
Add support for "ipsets" in *BSD, using pf. Thanks to
Sven Falempim for the patch.
Fix race condition which could lock up dnsmasq when an
interface goes down and up rapidly. Thanks to Conrad
Kostecki for helping to chase this down.
Add DBus methods SetFilterWin2KOption and SetBogusPrivOption
Thanks to the Smoothwall project for the patch.
Fix failure to build against Nettle-3.0. Thanks to Steven
Barth for spotting this and finding the fix.
When assigning existing DHCP leases to intefaces by comparing
networks, handle the case that two or more interfaces have the
same network part, but different prefix lengths (favour the
longer prefix length.) Thanks to Lung-Pin Chang for the
patch.
Add a mode which detects and removes DNS forwarding loops, ie
a query sent to an upstream server returns as a new query to
dnsmasq, and would therefore be forwarded again, resulting in
a query which loops many times before being dropped. Upstream
servers which loop back are disabled and this event is logged.
Thanks to Smoothwall for their sponsorship of this feature.
Extend --conf-dir to allow filtering of files. So
--conf-dir=/etc/dnsmasq.d,\*.conf
will load all the files in /etc/dnsmasq.d which end in .conf
Fix bug when resulted in NXDOMAIN answers instead of NODATA in
some circumstances.
Fix bug which caused dnsmasq to become unresponsive if it
failed to send packets due to a network interface disappearing.
Thanks to Niels Peen for spotting this.
Fix problem with --local-service option on big-endian platforms
Thanks to Richard Genoud for the patch.
version 2.71
Subtle change to error handling to help DNSSEC validation
when servers fail to provide NODATA answers for
non-existent DS records.
Tweak code which removes DNSSEC records from answers when
not required. Fixes broken answers when additional section
has real records in it. Thanks to Marco Davids for the bug
report.
Fix DNSSEC validation of ANY queries. Thanks to Marco Davids
for spotting that too.
Fix total DNS failure and 100% CPU use if cachesize set to zero,
regression introduced in 2.69. Thanks to James Hunt and
the Ubuntu crowd for assistance in fixing this.
version 2.70
Fix crash, introduced in 2.69, on TCP request when dnsmasq
compiled with DNSSEC support, but running without DNSSEC
enabled. Thanks to Manish Sing for spotting that one.
Fix regression which broke ipset functionality. Thanks to
Wang Jian for the bug report.
version 2.69
Implement dynamic interface discovery on *BSD. This allows
the contructor: syntax to be used in dhcp-range for DHCPv6
on the BSD platform. Thanks to Matthias Andree for
valuable research on how to implement this.
Fix infinite loop associated with some --bogus-nxdomain
configs. Thanks fogobogo for the bug report.
Fix missing RA RDNS option with configuration like
--dhcp-option=option6:23,[::] Thanks to Tsachi Kimeldorfer
for spotting the problem.
Add [fd00::] and [fe80::] as special addresses in DHCPv6
options, analogous to [::]. [fd00::] is replaced with the
actual ULA of the interface on the machine running
dnsmasq, [fe80::] with the link-local address.
Thanks to Tsachi Kimeldorfer for championing this.
DNSSEC validation and caching. Dnsmasq needs to be
compiled with this enabled, with
make dnsmasq COPTS=-DHAVE_DNSSEC
this add dependencies on the nettle crypto library and the
gmp maths library. It's possible to have these linked
statically with
make dnsmasq COPTS='-DHAVE_DNSSEC -DHAVE_DNSSEC_STATIC'
which bloats the dnsmasq binary, but saves the size of
the shared libraries which are much bigger.
To enable, DNSSEC, you will need a set of
trust-anchors. Now that the TLDs are signed, this can be
the keys for the root zone, and for convenience they are
included in trust-anchors.conf in the dnsmasq
distribution. You should of course check that these are
legitimate and up-to-date. So, adding
conf-file=/path/to/trust-anchors.conf
dnssec
to your config is all thats needed to get things
working. The upstream nameservers have to be DNSSEC-capable
too, of course. Many ISP nameservers aren't, but the
Google public nameservers (8.8.8.8 and 8.8.4.4) are.
When DNSSEC is configured, dnsmasq validates any queries
for domains which are signed. Query results which are
bogus are replaced with SERVFAIL replies, and results
which are correctly signed have the AD bit set. In
addition, and just as importantly, dnsmasq supplies
correct DNSSEC information to clients which are doing
their own validation, and caches DNSKEY, DS and RRSIG
records, which significantly improve the performance of
downstream validators. Setting --log-queries will show
DNSSEC in action.
If a domain is returned from an upstream nameserver without
DNSSEC signature, dnsmasq by default trusts this. This
means that for unsigned zone (still the majority) there
is effectively no cost for having DNSSEC enabled. Of course
this allows an attacker to replace a signed record with a
false unsigned record. This is addressed by the
--dnssec-check-unsigned flag, which instructs dnsmasq
to prove that an unsigned record is legitimate, by finding
a secure proof that the zone containing the record is not
signed. Doing this has costs (typically one or two extra
upstream queries). It also has a nasty failure mode if
dnsmasq's upstream nameservers are not DNSSEC capable.
Without --dnssec-check-unsigned using such an upstream
server will simply result in not queries being validated;
with --dnssec-check-unsigned enabled and a
DNSSEC-ignorant upstream server, _all_ queries will fail.
Note that DNSSEC requires that the local time is valid and
accurate, if not then DNSSEC validation will fail. NTP
should be running. This presents a problem for routers
without a battery-backed clock. To set the time needs NTP
to do DNS lookups, but lookups will fail until NTP has run.
To address this, there's a flag, --dnssec-no-timecheck
which disables the time checks (only) in DNSSEC. When dnsmasq
is started and the clock is not synced, this flag should
be used. As soon as the clock is synced, SIGHUP dnsmasq.
The SIGHUP clears the cache of partially-validated data and
resets the no-timecheck flag, so that all DNSSEC checks
henceforward will be complete.
The development of DNSSEC in dnsmasq was started by
Giovanni Bajo, to whom huge thanks are owed. It has been
supported by Comcast, whose techfund grant has allowed for
an invaluable period of full-time work to get it to
a workable state.
Add --rev-server. Thanks to Dave Taht for suggesting this.
Add --servers-file. Allows dynamic update of upstream servers
full access to configuration.
Add --local-service. Accept DNS queries only from hosts
whose address is on a local subnet, ie a subnet for which
an interface exists on the server. This option
only has effect if there are no --interface --except-interface,
--listen-address or --auth-server options. It is intended
to be set as a default on installation, to allow
unconfigured installations to be useful but also safe from
being used for DNS amplification attacks.
Fix crashes in cache_get_cname_target() when dangling CNAMEs
encountered. Thanks to Andy and the rt-n56u project for
find this and helping to chase it down.
Fix wrong RCODE in authoritative DNS replies to PTR queries. The
correct answer was included, but the RCODE was set to NXDOMAIN.
Thanks to Craig McQueen for spotting this.
Make statistics available as DNS queries in the .bind TLD as
well as logging them.
version 2.68
Use random addresses for DHCPv6 temporary address
allocations, instead of algorithmically determined stable
addresses.
Fix bug which meant that the DHCPv6 DUID was not available
in DHCP script runs during the lifetime of the dnsmasq
process which created the DUID de-novo. Once the DUID was
created and stored in the lease file and dnsmasq
restarted, this bug disappeared.
Fix bug introduced in 2.67 which could result in erroneous
NXDOMAIN returns to CNAME queries.
Fix build failures on MacOS X and openBSD.
Allow subnet specifications in --auth-zone to be interface
names as well as address literals. This makes it possible
to configure authoritative DNS when local address ranges
are dynamic and works much better than the previous
work-around which exempted contructed DHCP ranges from the
IP address filtering. As a consequence, that work-around
is removed. Under certain circumstances, this change wil
break existing configuration: if you're relying on the
contructed-range exception, you need to change --auth-zone
to specify the same interface as is used to construct your
DHCP ranges, probably with a trailing "/6" like this:
--auth-zone=example.com,eth0/6 to limit the addresses to
IPv6 addresses of eth0.
Fix problems when advertising deleted IPv6 prefixes. If
the prefix is deleted (rather than replaced), it doesn't
get advertised with zero preferred time. Thanks to Tsachi
for the bug report.
Fix segfault with some locally configured CNAMEs. Thanks
to Andrew Childs for spotting the problem.
Fix memory leak on re-reading /etc/hosts and friends,
introduced in 2.67.
Check the arrival interface of incoming DNS and TFTP
requests via IPv6, even in --bind-interfaces mode. This
isn't possible for IPv4 and can generate scary warnings,
but as it's always possible for IPv6 (the API always
exists) then we should do it always.
Tweak the rules on prefix-lengths in --dhcp-range for
IPv6. The new rule is that the specified prefix length
must be larger than or equal to the prefix length of the
corresponding address on the local interface.
version 2.67
Fix crash if upstream server returns SERVFAIL when
--conntrack in use. Thanks to Giacomo Tazzari for finding
this and supplying the patch.
Repair regression in 2.64. That release stopped sending
lease-time information in the reply to DHCPINFORM
requests, on the correct grounds that it was a standards
violation. However, this broke the dnsmasq-specific
dhcp_lease_time utility. Now, DHCPINFORM returns
lease-time only if it's specifically requested
(maintaining standards) and the dhcp_lease_time utility
has been taught to ask for it (restoring functionality).
Fix --dhcp-match, --dhcp-vendorclass and --dhcp-userclass
to work with BOOTP and well as DHCP. Thanks to Peter
Korsgaard for spotting the problem.
Add --synth-domain. Thanks to Vishvananda Ishaya for
suggesting this.
Fix failure to compile ipset.c if old kernel headers are
in use. Thanks to Eugene Rudoy for pointing this out.
Handle IPv4 interface-address labels in Linux. These are
often used to emulate the old IP-alias addresses. Before,
using --interface=eth0 would service all the addresses of
eth0, including ones configured as aliases, which appear
in ifconfig as eth0:0. Now, only addresses with the label
eth0 are active. This is not backwards compatible: if you
want to continue to bind the aliases too, you need to add
eg. --interface=eth0:0 to the config.
Fix "failed to set SO_BINDTODEVICE on DHCP socket: Socket
operation on non-socket" error on startup with
configurations which have exactly one --interface option
and do RA but _not_ DHCPv6. Thanks to Trever Adams for the
bug report.
Generalise --interface-name to cope with IPv6 addresses
and multiple addresses per interface per address family.
Fix option parsing for --dhcp-host, which was generating a
spurious error when all seven possible items were
included. Thanks to Zhiqiang Wang for the bug report.
Remove restriction on prefix-length in --auth-zone. Thanks
to Toke Hoiland-Jorgensen for suggesting this.
Log when the maximum number of concurrent DNS queries is
reached. Thanks to Marcelo Salhab Brogliato for the patch.
If wildcards are used in --interface, don't assume that
there will only ever be one available interface for DHCP
just because there is one at start-up. More may appear, so
we can't use SO_BINDTODEVICE. Thanks to Natrio for the bug
report.
Increase timeout/number of retries in TFTP to accomodate
AudioCodes Voice Gateways doing streaming writes to flash.
Thanks to Damian Kaczkowski for spotting the problem.
Fix crash with empty DHCP string options when adding zero
terminator. Thanks to Patrick McLean for the bug report.
Allow hostnames to start with a number, as allowed in
RFC-1123. Thanks to Kyle Mestery for the patch.
Fixes to DHCP FQDN option handling: don't terminate FQDN
if domain not known and allow a FQDN option with blank
name to request that a FQDN option is returned in the
reply. Thanks to Roy Marples for the patch.
Make --clear-on-reload apply to setting upstream servers
via DBus too.
When the address which triggered the construction of an
advertised IPv6 prefix disappears, continue to advertise
the prefix for up to 2 hours, with the preferred lifetime
set to zero. This satisfies RFC 6204 4.3 L-13 and makes
things work better if a prefix disappears without being
deprecated first. Thanks to Uwe Schindler for persuasively
arguing for this.
Fix MAC address enumeration on *BSD. Thanks to Brad Smith
for the bug report.
Support RFC-4242 information-refresh-time options in the
reply to DHCPv6 information-request. The lease time of the
smallest valid dhcp-range is sent. Thanks to Uwe Schindler
for suggesting this.
Make --listen-address higher priority than --except-interface
in all circumstances. Thanks to Thomas Hood for the bugreport.
Provide independent control over which interfaces get TFTP
service. If enable-tftp is given a list of interfaces, then TFTP
is provided on those. Without the list, the previous behaviour
(provide TFTP to the same interfaces we provide DHCP to)
is retained. Thanks to Lonnie Abelbeck for the suggestion.
Add --dhcp-relay config option. Many thanks to vtsl.net
for sponsoring this development.
Fix crash with empty tag: in --dhcp-range. Thanks to
Kaspar Schleiser for the bug report.
Add "baseline" and "bloatcheck" makefile targets, for
revealing size changes during development. Thanks to
Vladislav Grishenko for the patch.
Cope with DHCPv6 clients which send REQUESTs without
address options - treat them as SOLICIT with rapid commit.
Support identification of clients by MAC address in
DHCPv6. When using a relay, the relay must support RFC
6939 for this to work. It always works for directly
connected clients. Thanks to Vladislav Grishenko
for prompting this feature.
Remove the rule for constructed DHCP ranges that the local
address must be either the first or last address in the
range. This was originally to avoid SLAAC addresses, but
we now explicitly autoconfig and privacy addresses instead.
Update Polish translation. Thanks to Jan Psota.
Fix problem in DHCPv6 vendorclass/userclass matching
code. Thanks to Tanguy Bouzeloc for the patch.
Update Spanish transalation. Thanks to Vicente Soriano.
Add --ra-param option. Thanks to Vladislav Grishenko for
inspiration on this.
Add --add-subnet configuration, to tell upstream DNS
servers where the original client is. Thanks to DNSthingy
for sponsoring this feature.
Add --quiet-dhcp, --quiet-dhcp6 and --quiet-ra. Thanks to
Kevin Darbyshire-Bryant for the initial patch.
Allow A/AAAA records created by --interface-name to be the
target of --cname. Thanks to Hadmut Danisch for the
suggestion.
Avoid treating a --dhcp-host which has an IPv6 address
as eligable for use with DHCPv4 on the grounds that it has
no address, and vice-versa. Thanks to Yury Konovalov for
spotting the problem.
Do a better job caching dangling CNAMEs. Thanks to Yves
Dorfsman for spotting the problem.
version 2.66
Add the ability to act as an authoritative DNS
server. Dnsmasq can now answer queries from the wider 'net
with local data, as long as the correct NS records are set
up. Only local data is provided, to avoid creating an open
DNS relay. Zone transfer is supported, to allow secondary
servers to be configured.
Add "constructed DHCP ranges" for DHCPv6. This is intended
for IPv6 routers which get prefixes dynamically via prefix
delegation. With suitable configuration, stateful DHCPv6
and RA can happen automatically as prefixes are delegated
and then deprecated, without having to re-write the
dnsmasq configuration file or restart the daemon. Thanks to
Steven Barth for extensive testing and development work on
this idea.
Fix crash on startup on Solaris 11. Regression probably
introduced in 2.61. Thanks to Geoff Johnstone for the
patch.
Add code to make behaviour for TCP DNS requests that same
as for UDP requests, when a request arrives for an allowed
address, but via a banned interface. This change is only
active on Linux, since the relevant API is missing (AFAIK)
on other platforms. Many thanks to Tomas Hozza for
spotting the problem, and doing invaluable discovery of
the obscure and undocumented API required for the solution.
Don't send the default DHCP option advertising dnsmasq as
the local DNS server if dnsmasq is configured to not act
as DNS server, or it's configured to a non-standard port.
Add DNSMASQ_CIRCUIT_ID, DNSMASQ_SUBCRIBER_ID,
DNSMASQ_REMOTE_ID variables to the environment of the
lease-change script (and the corresponding Lua). These hold
information inserted into the DHCP request by a DHCP relay
agent. Thanks to Lakefield Communications for providing a
bounty for this addition.
Fixed crash, introduced in 2.64, whilst handling DHCPv6
information-requests with some common configurations.
Thanks to Robert M. Albrecht for the bug report and
chasing the problem.
Add --ipset option. Thanks to Jason A. Donenfeld for the
patch.
Don't erroneously reject some option names in --dhcp-match
options. Thanks to Benedikt Hochstrasser for the bug report.
Allow a trailing '*' wildcard in all interface-name
configurations. Thanks to Christian Parpart for the patch.
Handle the situation where libc headers define
SO_REUSEPORT, but the kernel in use doesn't, to cope with
the introduction of this option to Linux. Thanks to Rich
Felker for the bug report.
Update Polish translation. Thanks to Jan Psota.
Fix crash if the configured DHCP lease limit is
reached. Regression occurred in 2.61. Thanks to Tsachi for
the bug report.
Update the French translation. Thanks to Gildas le Nadan.
version 2.65
Fix regression which broke forwarding of queries sent via
TCP which are not for A and AAAA and which were directed to
non-default servers. Thanks to Niax for the bug report.
Fix failure to build with DHCP support excluded. Thanks to
Gustavo Zacarias for the patch.
Fix nasty regression in 2.64 which completely broke cacheing.
version 2.64
Handle DHCP FQDN options with all flag bits zero and
--dhcp-client-update set. Thanks to Bernd Krumbroeck for
spotting the problem.
Finesse the check for /etc/hosts names which conflict with
DHCP names. Previously a name/address pair in /etc/hosts
which didn't match the name/address of a DHCP lease would
generate a warning. Now that only happesn if there is not
also a match. This allows multiple addresses for a name in
/etc/hosts with one of them assigned via DHCP.
Fix broken vendor-option processing for BOOTP. Thanks to
Hans-Joachim Baader for the bug report.
Don't report spurious netlink errors, regression in
2.63. Thanks to Vladislav Grishenko for the patch.
Flag DHCP or DHCPv6 in starup logging. Thanks to
Vladislav Grishenko for the patch.
Add SetServersEx method in DBus interface. Thanks to Dan
Williams for the patch.
Add SetDomainServers method in DBus interface. Thanks to
Roy Marples for the patch.
Fix build with later Lua libraries. Thansk to Cristian
Rodriguez for the patch.
Add --max-cache-ttl option. Thanks to Dennis Kaarsemaker
for the patch.
Fix breakage of --host-record parsing, resulting in
infinte loop at startup. Regression in 2.63. Thanks to
Haim Gelfenbeyn for spotting this.
Set SO_REUSEADDRESS and SO_V6ONLY options on the DHCPv6
socket, this allows multiple instances of dnsmasq on a
single machine, in the same way as for DHCPv4. Thanks to
Gene Czarcinski and Vladislav Grishenko for work on this.
Fix DHCPv6 to do access control correctly when it's
configured with --listen-address. Thanks to
Gene Czarcinski for sorting this out.
Add a "wildcard" dhcp-range which works for any IPv6
subnet, --dhcp-range=::,static Useful for Stateless
DHCPv6. Thanks to Vladislav Grishenko for the patch.
Don't include lease-time in DHCPACK replies to DHCPINFORM
queries, since RFC-2131 says we shouldn't. Thanks to
Wouter Ibens for pointing this out.
Makefile tweak to do dependency checking on header files.
Thanks to Johan Peeters for the patch.
Check interface for outgoing unsolicited router
advertisements, rather than relying on interface address
configuration. Thanks to Gene Czarinski for the patch.
Handle better attempts to transmit on interfaces which are
still doing DAD, and specifically do not just transmit
without setting source address and interface, since this
can cause very puzzling effects when a router
advertisement goes astray. Thanks again to Gene Czarinski.
Get RA timers right when there is more than one
dhcp-range on a subnet.
version 2.63
Do duplicate dhcp-host address check in --test mode.
Check that tftp-root directories are accessible before
start-up. Thanks to Daniel Veillard for the initial patch.
Allow more than one --tfp-root flag. The per-interface
stuff is pointless without that.
Add --bind-dynamic. A hybrid mode between the default and
--bind-interfaces which copes with dynamically created
interfaces.
A couple of fixes to the build system for Android. Thanks
to Metin Kaya for the patches.
Remove the interface:<interface> argument in --dhcp-range, and
the interface argument to --enable-tftp. These were a
still-born attempt to allow automatic isolated
configuration by libvirt, but have never (to my knowledge)
been used, had very strange semantics, and have been
superceded by other mechanisms.
Fixed bug logging filenames when duplicate dhcp-host
addresses are found. Thanks to John Hanks for the patch.
Fix regression in 2.61 which broke caching of CNAME
chains. Thanks to Atul Gupta for the bug report.
Allow the target of a --cname flag to be another --cname.
Teach DHCPv6 about the RFC 4242 information-refresh-time
option, and add parsing if the minutes, hours and days
format for options. Thanks to Francois-Xavier Le Bail for
the suggestion.
Allow "w" (for week) as multiplier in lease times, as well
as seconds, minutes, hours and days. Álvaro Gámez Machado
spotted the ommission.
Update French translation. Thanks to Gildas Le Nadan.
Allow a DBus service name to be given with --enable-dbus
which overrides the default,
uk.org.thekelleys.dnsmasq. Thanks to Mathieu
Trudel-Lapierre for the patch.
Set the "prefix on-link" bit in Router
Advertisements. Thanks to Gui Iribarren for the patch.
version 2.62
Update German translation. Thanks to Conrad Kostecki.
Cope with router-solict packets wich don't have a valid
source address. Thanks to Vladislav Grishenko for the patch.
Fixed bug which caused missing periodic router
advertisements with some configurations. Thanks to
Vladislav Grishenko for the patch.
Fixed bug which broke DHCPv6/RA with prefix lengths
which are not divisible by 8. Thanks to Andre Coetzee
for spotting this.
Fix non-response to router-solicitations when
router-advertisement configured, but DHCPv6 not
configured. Thanks to Marien Zwart for the patch.
Add --dns-rr, to allow arbitrary DNS resource records.
Fixed bug which broke RA scheduling when an interface had
two addresses in the same network. Thanks to Jim Bos for
his help nailing this.
version 2.61
Re-write interface discovery code on *BSD to use
getifaddrs. This is more portable, more straightforward,
and allows us to find the prefix length for IPv6
addresses.
Add ra-names, ra-stateless and slaac keywords for DHCPv6.
Dnsmasq can now synthesise AAAA records for dual-stack
hosts which get IPv6 addresses via SLAAC. It is also now
possible to use SLAAC and stateless DHCPv6, and to
tell clients to use SLAAC addresses as well as DHCP ones.
Thanks to Dave Taht for help with this.
Add --dhcp-duid to allow DUID-EN uids to be used.
Explicity send DHCPv6 replies to the correct port, instead
of relying on clients to send requests with the correct
source address, since at least one client in the wild gets
this wrong. Thanks to Conrad Kostecki for help tracking
this down.
Send a preference value of 255 in DHCPv6 replies when
--dhcp-authoritative is in effect. This tells clients not
to wait around for other DHCP servers.
Better logging of DHCPv6 options.
Add --host-record. Thanks to Rob Zwissler for the
suggestion.
Invoke the DHCP script with action "tftp" when a TFTP file
transfer completes. The size of the file, address to which
it was sent and complete pathname are supplied. Note that
version 2.60 introduced some script incompatibilties
associated with DHCPv6, and this is a further change. To
be safe, scripts should ignore unknown actions, and if
not IPv6-aware, should exit if the environment
variable DNSMASQ_IAID is set. The use-case for this is
to track netboot/install. Suggestion from Shantanu
Gadgil.
Update contrib/port-forward/dnsmasq-portforward to reflect
the above.
Set the environment variable DNSMASQ_LOG_DHCP when running
the script id --log-dhcp is in effect, so that script can
taylor their logging verbosity. Suggestion from Malte
Forkel.
Arrange that addresses specified with --listen-address
work even if there is no interface carrying the
address. This is chiefly useful for IPv4 loopback
addresses, where any address in 127.0.0.0/8 is a valid
loopback address, but normally only 127.0.0.1 appears on
the lo interface. Thanks to Mathieu Trudel-Lapierre for
the idea and initial patch.
Fix crash, introduced in 2.60, when a DHCPINFORM is
received from a network which has no valid dhcp-range.
Thanks to Stephane Glondu for the bug report.
Add a new DHCP lease time keyword, "deprecated" for
--dhcp-range. This is only valid for IPv6, and sets the
preffered lease time for both DHCP and RA to zero. The
effect is that clients can continue to use the address
for existing connections, but new connections will use
other addresses, if they exist. This makes hitless
renumbering at least possible.
Fix bug in address6_available() which caused DHCPv6 lease
aquisition to fail if more than one dhcp-range in use.
Provide RDNSS and DNSSL data in router advertisements,
using the settings provided for DHCP options
option6:domain-search and option6:dns-server.
Tweak logo/favicon.ico to add some transparency. Thanks to
SamLT for work on this.
Don't cache data from non-recursive nameservers, since it
may erroneously look like a valid CNAME to a non-exitant
name. Thanks to Ben Winslow for finding this.
Call SO_BINDTODEVICE on the DHCP socket(s) when doing DHCP
on exactly one interface and --bind-interfaces is set. This
makes the OpenStack use-case of one dnsmasq per virtual
interface work. This is only available on Linux; it's not
supported on other platforms. Thanks to Vishvananda Ishaya
and the OpenStack team for the suggestion.
Updated French translation. Thanks to Gildas Le Nadan.
Give correct from-cache answers to explict CNAME queries.
Thanks to Rob Zwissler for spotting this.
Add --tftp-lowercase option. Thanks to Oliver Rath for the
patch.
Ensure that the DBus DhcpLeaseUpdated events are generated
when a lease goes through INIT_REBOOT state, even if the
dhcp-script is not in use. Thanks to Antoaneta-Ecaterina
Ene for the patch.
Fix failure of TFTP over IPv4 on OpenBSD platform. Thanks
to Brad Smith for spotting this.
version 2.60
Fix compilation problem in Mac OS X Lion. Thanks to Olaf
Flebbe for the patch.
Fix DHCP when using --listen-address with an IP address
which is not the primary address of an interface.
Add --dhcp-client-update option.
Add Lua integration. Dnsmasq can now execute a DHCP
lease-change script written in Lua. This needs to be
enabled at compile time by setting HAVE_LUASCRIPT in
src/config.h or running "make COPTS=-DHAVE_LUASCRIPT"
Thanks to Jan-Piet Mens for the idea and proof-of-concept
implementation.
Tidied src/config.h to distinguish between
platform-dependent compile-time options which are selected
automatically, and builder-selectable compile time
options. Document the latter better, and describe how to
set them from the make command line.
Tidied up IPPROTO_IP/SOL_IP (and IPv6 equivalent)
confusion. IPPROTO_IP works everywhere now.
Set TOS on DHCP sockets, this improves things on busy
wireless networks. Thanks to Dave Taht for the patch.
Determine VERSION automatically based on git magic:
release tags or hash values.
Improve start-up speed when reading large hosts files
containing many distinct addresses.
Fix problem if dnsmasq is started without the stdin,
stdout and stderr file descriptors open. This can manifest
itself as 100% CPU use. Thanks to Chris Moore for finding
this.
Fix shell-scripting bug in bld/pkg-wrapper. Thanks to
Mark Mitchell for the patch.
Allow the TFP server or boot server in --pxe-service, to
be a domain name instead of an IP address. This allows for
round-robin to multiple servers, in the same way as
--dhcp-boot. A good suggestion from Cristiano Cumer.
Support BUILDDIR variable in the Makefile. Allows builds
for multiple archs from the same source tree with eg.
make BUILDDIR=linux (relative to dnsmasq tree)
make BUILDDIR=/tmp/openbsd (absolute path)
If BUILDDIR is not set, compilation happens in the src
directory, as before. Suggestion from Mark Mitchell.
Support DHCPv6. Support is there for the sort of things
the existing v4 server does, including tags, options,
static addresses and relay support. Missing is prefix
delegation, which is probably not required in the dnsmasq
niche, and an easy way to accept prefix delegations from
an upstream DHCPv6 server, which is. Future plans include
support for DHCPv6 router option and MAC address option
(to make selecting clients by MAC address work like IPv4).
These will be added as the standards mature.
This code has been tested, but this is the first release,
so don't bet the farm on it just yet. Many thanks to all
testers who have got it this far.
Support IPv6 router advertisements. This is a
simple-minded implementation, aimed at providing the
vestigial RA needed to go alongside IPv6. Is picks up
configuration from the DHCPv6 conf, and should just need
enabling with --enable-ra.
Fix long-standing wrinkle with --localise-queries that
could result in wrong answers when DNS packets arrive
via an interface other than the expected one. Thanks to
Lorenzo Milesi and John Hanks for spotting this one.
Update French translation. Thanks to Gildas Le Nadan.
Update Polish translation. Thanks to Jan Psota.
version 2.59
Fix regression in 2.58 which caused failure to start up
with some combinations of dnsmasq config and IPv6 kernel
network config. Thanks to Brielle Bruns for the bug
report.
Improve dnsmasq's behaviour when network interfaces are
still doing duplicate address detection (DAD). Previously,
dnsmasq would wait up to 20 seconds at start-up for the
DAD state to terminate. This is broken for bridge
interfaces on recent Linux kernels, which don't start DAD
until the bridge comes up, and so can take arbitrary
time. The new behaviour lets dnsmasq poll for an arbitrary
time whilst providing service on other interfaces. Thanks
to Stephen Hemminger for pointing out the problem.
version 2.58
Provide a definition of the SA_SIZE macro where it's
missing. Fixes build failure on openBSD.
Don't include a zero terminator at the end of messages
sent to /dev/log when /dev/log is a datagram socket.
Thanks to Didier Rabound for spotting the problem.
Add --dhcp-sequential-ip flag, to force allocation of IP
addresses in ascending order. Note that the default
pseudo-random mode is in general better but some
server-deployment applications need this.
Fix problem where a server-id of 0.0.0.0 is sent to a
client when a dhcp-relay is in use if a client renews a
lease after dnsmasq restart and before any clients on the
subnet get a new lease. Thanks to Mike Ruiz for assistance
in chasing this one down.
Don't return NXDOMAIN to an AAAA query if we have CNAME
which points to an A record only: NODATA is the correct
reply in this case. Thanks to Tom Fernandes for spotting
the problem.
Relax the need to supply a netmask in --dhcp-range for
networks which use a DHCP relay. Whilst this is still
desireable, in the absence of a netmask dnsmasq will use
a default based on the class (A, B, or C) of the address.
This should at least remove a cause of mysterious failure
for people using RFC1918 addresses and relays.
Add support for Linux conntrack connection marking. If
enabled with --conntrack, the connection mark for incoming
DNS queries will be copied to the outgoing connections
used to answer those queries. This allows clever firewall
and accounting stuff. Only available if dnsmasq is
compiled with HAVE_CONNTRACK and adds a dependency on
libnetfilter-conntrack. Thanks to Ed Wildgoose for the
initial idea, testing and sponsorship of this function.
Provide a sane error message when someone attempts to
match a tag in --dhcp-host.
Tweak the behaviour of --domain-needed, to avoid problems
with recursive nameservers downstream of dnsmasq. The new
behaviour only stops A and AAAA queries, and returns
NODATA rather than NXDOMAIN replies.
Efficiency fix for very large DHCP configurations, thanks
to James Gartrell and Mike Ruiz for help with this.
Allow the TFTP-server address in --dhcp-boot to be a
domain-name which is looked up in /etc/hosts. This can
give multiple IP addresses which are used round-robin,
thus doing TFTP server load-balancing. Thanks to Sushil
Agrawal for the patch.
When two tagged dhcp-options for a particular option
number are both valid, use the one which is valid without
a tag from the dhcp-range. Allows overriding of the value
of a DHCP option for a particular host as well as
per-network values. So
--dhcp-range=set:interface1,......
--dhcp-host=set:myhost,.....
--dhcp-option=tag:interface1,option:nis-domain,"domain1"
--dhcp-option=tag:myhost,option:nis-domain,"domain2"
will set the NIS-domain to domain1 for hosts in the range, but
override that to domain2 for a particular host.
Fix bug which resulted in truncated files and timeouts for
some TFTP transfers. The bug only occurs with netascii
transfers and needs an unfortunate relationship between
file size, blocksize and the number of newlines in the
last block before it manifests itself. Many thanks to
Alkis Georgopoulos for spotting the problem and providing
a comprehensive test-case.
Fix regression in TFTP server on *BSD platforms introduced
in version 2.56, due to confusion with sockaddr
length. Many thanks to Loic Pefferkorn for finding this.
Support scope-ids in IPv6 addresses of nameservers from
/etc/resolv.conf and in --server options. Eg
nameserver fe80::202:a412:4512:7bbf%eth0 or
server=fe80::202:a412:4512:7bbf%eth0. Thanks to
Michael Stapelberg for the suggestion.
Update Polish translation, thanks to Jan Psota.
Update French translation. Thanks to Gildas Le Nadan.
version 2.57
Add patches to allow build under Android.
Provide our own header for the DNS protocol, rather than
relying on arpa/nameser.h. This has proved more or less
defective over the years and the final straw is that it's
effectively empty on Android.