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[Bug 1881643] Re: pmtu.sh net selftest fail with PMTU dst likely leaked (can't delete veth device in a timely manner, PMTU dst likely leaked)

To: canonical-ubuntu-qa@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1881643@xxxxxxxxxxxxxxxxxx>
Date: Fri, 01 Mar 2024 16:22:55 -0000
Reply-to: Bug 1881643 <1881643@xxxxxxxxxxxxxxxxxx>
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** Merge proposal linked:
   https://code.launchpad.net/~canonical-kernel-team/+git/rt-hints/+merge/461647

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https://bugs.launchpad.net/bugs/1881643

Title:
  pmtu.sh net selftest fail with PMTU dst likely leaked (can't delete
  veth device in a timely manner, PMTU dst likely leaked)

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Incomplete
Status in linux source package in Focal:
  Confirmed

Bug description:
  https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-
  focal/focal/ppc64el/l/linux/20200528_044656_7f57a@/log.gz

  [...]
  03:48:34 DEBUG| [stdout] # TEST: ipv6: cleanup of cached exceptions - nexthop objects          [FAIL]
  03:48:34 DEBUG| [stdout] #   can't delete veth device in a timely manner, PMTU dst likely leaked
  [...]
  03:49:17 DEBUG| [stdout] not ok 16 selftests: net: pmtu.sh # exit=1

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