Dnsmasq 2.73+ doesn't work with Calico

[Nell Jerram]

Moved here from https://github.com/projectcalico/calico/issues/936.

"neiljerram commented on 7 Dec 2015

"Reported by @nbartos : Has anyone actually tested Calico with vanilla dnsmasq 2.73, 2.74, or 2.75? When I run 2.72 with the Calico patches everything works fine, but if I run with 2.73-2.75 the dhcp replies go out the ns* interface instead of the tap* interface.

"neiljerram commented on 7 Dec 2015

"In principle, for IPv4 operation, >=2.72 should be good, as our change for IPv4 operation was merged before 2.72.

"For IPv6, it's >=2.73 that's needed. But 2.73 had some significant (but unrelated to us!) bug in it, so was rapidly followed by 2.74. So in practice you're unlikely to find a 2.73 in the field, and the criterion should be >=2.74.

"But @nbartos reports that 2.74 and 2.75 definitely do not work for him."

[Nell Jerram (neil-jerram)]

http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2016q2/010452.html

[Nell Jerram (neil-jerram)]

Fix for this problem is now in upstream dnsmasq git [1][2] and will be in release 2.76.
[1] http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=ff325644c7afae2588583f935f4ea9b9694eb52e
[2] http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2016q2/010511.html

For Ubuntu Xenial, there is a package built from Dnsmasq 2.75 + this fix, in the Project Calico PPA at https://launchpad.net/~project-calico/+archive/ubuntu/unstable

[Nell Jerram (neil-jerram)]

This is now 'Fix Released' if you use the 'Calico 1.4' PPA at https://launchpad.net/~project-calico/+archive/ubuntu/calico-1.4, which is what we recommend at http://docs.projectcalico.org/v1.5/getting-started/openstack/installation/ubuntu.