Hi there, Forgive my ignorance on all matters dnsmasq/ipv6 - I'm coming to this from the 'desktop' end and I've not got much experience here.
We noticed in Ubuntu that our NetworkManager testsuite started failing once we had copied dnsmasq 2.80-1 from unstable. What this testsuite does (you can read the code at  if you're interested) is start dnsmasq in the given mode (supplied by the testcase), create some fake interfaces, and verify that the interfaces come up properly. The testcase "test_auto_ip6_raonly_no_pe" started failing. What we see is that the test times out, and when that happens the dnsmasq log file is filled with dnsmasq-dhcp: RTR-ADVERT(veth42) 2600:: repeating over and over. You can view a log file including all the dnsmasq log entries at  - it's huge though, so I suggest downloading it and using a real text editor instead of your browser. This test starts dnsmasq in ra-only mode, and that seems to be the case that's broken. Since this started happening in a new version, I was able to bisect 2.79 to 2.80, and I found that commit 0a496f059c1e9d75c33cce4c1211d58422ba4f62 is the first bad commit. Indeed, reverting that on master causes the NM testsuite to start passing again. Can anyone help shed some light please? Are we looking at a dnsmasq bug, or something that our testsutie is doing wrong? If any more information would be helpful then I'm more than happy to provide it. Cheers all, -- Iain Lane [ i...@orangesquash.org.uk ] Debian Developer [ la...@debian.org ] Ubuntu Developer [ la...@ubuntu.com ]  https://git.launchpad.net/network-manager/tree/debian/tests?h=disco - nm.py & network_test_base.py  https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-disco/disco/amd64/n/network-manager/20181218_194950_de909@/log.gz
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