apport information

** Attachment added: "Lsusb.txt"
   https://bugs.launchpad.net/bugs/1711407/+attachment/4934474/+files/Lsusb.txt

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https://bugs.launchpad.net/bugs/1711407

Title:
  unregister_netdevice: waiting for lo to become free

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  This is a "continuation" of bug 1403152, as that bug has been marked
  "fix released" and recent reports of failure may (or may not) be a new
  bug.  Any further reports of the problem should please be reported
  here instead of that bug.

  --

  [Impact]

  When shutting down and starting containers the container network
  namespace may experience a dst reference counting leak which results
  in this message repeated in the logs:

      unregister_netdevice: waiting for lo to become free. Usage count =
  1

  This can cause issues when trying to create net network namespace and
  thus block a user from creating new containers.

  [Test Case]

  ?

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