Download Dnsmasq 2.61

Dnsmasq is a relatively easy to set up lightweight dns and dhcp server, targeting ‘small’ environments. Support for static and dynamic dhcp leases is provided, as is bootp and tftp, which allow diskless machines to boot over the network. For more information, please refer to this page. The developer released version 2.61 of Dnsmasq few days ago. The corresponding list of changes looks like 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-indicat to allow DUID-EN uids to be used.
• Explicitly 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 Conrda 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 or 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 preferred 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 acquisition 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 exacly 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 explicit 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.