[Bug 1955578] Update Released

[Chris Halse Rogers]

The verification of the Stable Release Update for neutron has completed
successfully and the package is now being released to -updates.
Subsequently, the Ubuntu Stable Release Updates Team is being
unsubscribed and will not receive messages about this bug report.  In
the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.

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https://bugs.launchpad.net/bugs/1955578

Title:
  OVN transaction could not be completed due to a race condition

Status in Ubuntu Cloud Archive:
  Fix Released
Status in Ubuntu Cloud Archive ussuri series:
  Fix Released
Status in Ubuntu Cloud Archive victoria series:
  Triaged
Status in neutron:
  Fix Released
Status in neutron package in Ubuntu:
  Fix Released
Status in neutron source package in Focal:
  Fix Committed

Bug description:
  When executing the test "test_connectivity_through_2_routers" it is highly possible to have
  a race condition:

  networking_ovn.common.exceptions.RevisionConflict: OVN revision number
  for {PORT_ID} (type: ports) is equal or higher than the given
  resource. Skipping update.

  Bugzilla reference:
  https://bugzilla.redhat.com/show_bug.cgi?id=1860448

  ===== Ubuntu SRU Details =====
  [Impact]
  See bug description.

  [Test Case]
  Deploy openstack with OVN. Run the test_connectivity_through_2_routers test from https://github.com/openstack/neutron-tempest-plugin. This could also be tested manually based on what that test does. Ensure the router port status is not set to DOWN at any point.

  [Where problems could occur]
  The existing bug could still occur if the assumpion that specifying the port type is not correct. Presumably this is not the case, but that is a theoritical potential for where problems could occur. All of these patches have already landed in the corresponding upstream branches.

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