On Fri, Dec 31, 2010 at 02:57:16PM -0500, Laine Stump wrote: > On 12/29/2010 10:00 AM, PaweÅ KrzeÅniak wrote: > >Firstly: Add ip6tables rules to allow DNS over IPv6 in network. > > > >Secondly: start dnsmasq with --interface option instead of --listen-address. > > > >Dnsmasq currently uses "--listen-address IPv4_address" option, which > >restricts DNS service to one IPv4 address only. > >We could append --listen-address for every IPv[46] address defined on > >interface, but it's cleaner to use "--interface brname". > > > >There were some problems in the past with --interface option. Dnsmasq > >version 2.46 and earlier exited with error when tired to bind() to IPv6 > >addresses on just brought up interfaces, because DAD (Duplicate > >Address Detection) takes some time to finish and bind() returns > >EADDRNOTAVAIL which caused dnsmasq to exit. > >Dnsmasq version 2.47 (released on 05-Feb-2009) fixed this issue by > >retrying bind() after getting EADDRNOTAVAIL error (as described in > >http://www.thekelleys.org.uk/dnsmasq/CHANGELOG; > >loop itself is defined in dnsmasq-2.47/src/network.c:404) > > In general this would be a good change to have. I'm not certain how > careful we need to be about preserving compatibility with any > platform that is still using dnsmasq older than 2.47, though. Dan or > Dan, would you like to weigh in on that? RHEL5 is still a primary platform targetted for libvirt releases and that has dnsmasq 2.45. Thus I'd prefer that we found a way to support the IPv6 DNS feature if dnsmasq is new enough, without preventing people using IPv4 only DNS on older dnsmasq. Daniel -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list