Comment 3 for bug 1951872

Reviewed: https://review.opendev.org/c/openstack/neutron/+/822294
Committed: https://opendev.org/openstack/neutron/commit/5b597d6e4ee647502d3f2aecd46de63f409317b4
Submitter: "Zuul (22348)"
Branch: master

commit 5b597d6e4ee647502d3f2aecd46de63f409317b4
Author: yatinkarel <email address hidden>
Date: Mon Dec 20 13:07:25 2021 +0530

    [OVN] Add reverse DNS records

    PTR DNS requests support is available since
    ovn-21.06.0[1].

    This patch adds/removes required enteries for each ip
    address of the port in DNS NB table, For example for ip
    addresses "10.0.0.4 fd5a:cdd8:f382:0:f816:3eff:fe5b:bb6"
    and fqdn "vm1.ovn.test." following enteries are added:-
    - 4.0.0.10.in-addr.arpa="vm1.ovn.test"
    - 6.b.b.0.b.5.e.f.f.f.e.3.6.1.8.f.0.0.0.0.2.8.3.f.8.d.d.c.a.5.d.f.ip6.arpa="vm1.ovn.test"

    [1] https://github.com/ovn-org/ovn/commit/82a4e44

    Closes-Bug: #1951872
    Change-Id: If03a2ad2475cdb390c4388d6869cd0b2a0555eb7