Public bug reported:

Patch I322c392529c04aca2448fd957a35f4908b323449 added a new device_owner
for HA interfaces between a router and an internal subnet, which is used
to differentiate it from normal, non-HA interfaces. However, when
migrating a router from HA to legacy, the device_owner isn't switched
back to its non-HA counterpart. This can cause migration of the router
to DVR to not work properly as the snat interface isn't created.

A log and reproducible can be found in [1].

[1]: http://paste.openstack.org/show/590804/

** Affects: neutron
     Importance: High
     Assignee: John Schwarz (jschwarz)
         Status: Confirmed


** Tags: l3-ha

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https://bugs.launchpad.net/bugs/1645716

Title:
  Migrating HA routers to Legacy doesn't update interface's device_owner

Status in neutron:
  Confirmed

Bug description:
  Patch I322c392529c04aca2448fd957a35f4908b323449 added a new
  device_owner for HA interfaces between a router and an internal
  subnet, which is used to differentiate it from normal, non-HA
  interfaces. However, when migrating a router from HA to legacy, the
  device_owner isn't switched back to its non-HA counterpart. This can
  cause migration of the router to DVR to not work properly as the snat
  interface isn't created.

  A log and reproducible can be found in [1].

  [1]: http://paste.openstack.org/show/590804/

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