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[Elvira García Ruiz <1961967@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

A recently merged patch [0] has introduced a race condition when
creating or updating an OVN Logical Router Port. If the mtu is changed
on an external network, the set_gateway_mtu function will look to update
all related logical router ports.

There is a small chance in this operation that one of those routers got
deleted along the way. This raises a RouterNotFound error and fails.

More info and testing details available on this Bugzilla [1]

[0] https://review.opendev.org/c/openstack/neutron/+/818443
[1] https://bugzilla.redhat.com/show_bug.cgi?id=2055171

Fix proposed: https://review.opendev.org/c/openstack/neutron/+/830509

** Affects: neutron
     Importance: Undecided
     Assignee: Elvira García Ruiz (elviragr)
         Status: New

** Changed in: neutron
     Assignee: (unassigned) => Elvira García Ruiz (elviragr)

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https://bugs.launchpad.net/bugs/1961967

Title:
  [OVN]  Neutron requests answered with RouterNotFound

Status in neutron:
  New

Bug description:
  A recently merged patch [0] has introduced a race condition when
  creating or updating an OVN Logical Router Port. If the mtu is changed
  on an external network, the set_gateway_mtu function will look to
  update all related logical router ports.

  There is a small chance in this operation that one of those routers
  got deleted along the way. This raises a RouterNotFound error and
  fails.

  More info and testing details available on this Bugzilla [1]

  [0] https://review.opendev.org/c/openstack/neutron/+/818443
  [1] https://bugzilla.redhat.com/show_bug.cgi?id=2055171

  Fix proposed: https://review.opendev.org/c/openstack/neutron/+/830509

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