This might be related to a backport issue in the upstream stable patch below:
commit 4fab9071950c2021d846e18351e0f46a1cffd67b Author: Neal Cardwell <ncardw...@google.com> Date: Thu Aug 14 12:40:05 2014 -0400 tcp: fix tcp_release_cb() to dispatch via address family for mtu_reduced() I have produced some test kernels with the backport corrected, could you try the kernels below to confirm if this is indeed the underlying issue. Kernels are at the URL below: http://people.canonical.com/~apw/lp1404558-trusty/ Please report any testing back here. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1404558 Title: IPv6 related kernel panic following upgrade to 3.13.0-43 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1404558/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs