Thanks Derek. Your patch worked for me. I had already disabled IPv6 via sysctl and took all IPv6 addresses off my interfaces. The about:config solves firefox, but mutt and ssh were still a problem.
I'm a bit surprised at some of the suggested workarounds. I wouldn't really blame the resolvers - things shouldn't be doing AAAA lookups if ipv6 is disabled in the first place. It might be possible to blame the authors of virtually every network-aware app, but that isn't realistic. Most of us running ubuntu in corporate networks with broken Microsoft resolvers are doing so completely unsupported. If you open a ticket, you'll be lucky if ignoring it is the worst that happens. More likely you'll be told to use a supported environment and just give them another reason why linux users are an expensive problem. "Go fix your resolvers" is just not a reasonable response. Using other DNS servers doesn't work in this case either, because they don't have access the intranet zones. -- [regression] all network apps / browsers suffer from multi-second delays by default due to IPv6 DNS lookups https://bugs.launchpad.net/bugs/417757 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs