[Bug 2154492] Re: 25.09: System Kernel Module Tests failing

[Matthew Ruffell]

Please write a SRU Template for this bug, since this is destined for
stable releases.

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https://bugs.launchpad.net/bugs/2154492

Title:
  25.09: System Kernel Module Tests failing

Status in ovn package in Ubuntu:
  Invalid
Status in ovn source package in Questing:
  In Progress

Bug description:
  Failing autopkgtests:
  - LR with SNAT fragmentation needed for external server
  - DNAT and SNAT on distributed router - N/S - IPv6
  - Traffic to router port via LLA

  These are due to certain conntrack changes in 6.17, that lead to the
  packets being different to what OVS expects (ie larger and with more
  data). OVS upstream has a number of commits that fix these, the one of
  most importance to this being "conntrack: Fix replace_substring to
  handle larger packets". Which is conviniently available as part of OVS
  3.6.3, for which we have a point release in progress.

  Fix: Depend on openvswitch-switch >= 3.6.3.

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