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[Stéphane Graber <stgraber@xxxxxxxxxxxx>]

Rebooted the Xeon E5-2620v2 system on linux-image-3.13.0-44-generic now.

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https://bugs.launchpad.net/bugs/1404558

Title:
  IPv6 related kernel panic following upgrade to 3.13.0-43

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  After updating a dozen machines from 3.13.0-40 to 3.13.0-43, they all
  kernel panic within the next 24 hours.

  I managed to pull the console from one over an IP KVM and it shows a panic related to IPv6 networking:
  https://dl.stgraber.org/panic-3.13-43.png

  All affected machines had native IPv6 connectivity to the Internet.

  Downgrading to 3.13.0-40 resolved the issue (so it's clearly a
  regression) and upgrading to lts-utopic 3.16.0-28-generic also
  appeared to do the trick.

  
  A friend also just reported seeing the exact same problem on his server which also has native IPv6 connectivity so the issue appears pretty widespread.

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