Comment 2 for bug 1841778

Reviewed: https://review.opendev.org/679023
Committed: https://git.openstack.org/cgit/openstack/compute-hyperv/commit/?id=7dd16950d3dea87c9853c62fea26437de0dfd814
Submitter: Zuul
Branch: master

commit 7dd16950d3dea87c9853c62fea26437de0dfd814
Author: Lucian Petrut <email address hidden>
Date: Wed Aug 28 13:07:46 2019 +0300

    Recreate ports for failed over instances

    OVS ports can become invalid after the instances are failed over.
    If an instance lands back on the initial host and the ports are
    not cleaned up, it will be left with those stale ports.

    This change adds a config option, allowing those ports to be recreated.
    It will be enabled by default. Deployers may consider disabling it
    if the remaining ports are cleaned up when rebooting nodes or if the
    network backend is not affected by this issue.

    Closes-Bug: #1841778

    Change-Id: I58aba53b7bc0a5e8954cf31adac6e7e106944b7e