Comment 11 for bug 2002800

Reviewed: https://review.opendev.org/c/openstack/neutron/+/870658
Committed: https://opendev.org/openstack/neutron/commit/97e86e51aee0573dbeea31fb648ac3c31132c507
Submitter: "Zuul (22348)"
Branch: stable/yoga

commit 97e86e51aee0573dbeea31fb648ac3c31132c507
Author: Fernando Royo <email address hidden>
Date: Fri Jan 13 12:22:08 2023 +0100

    Allow multiple IPv6 ports on router from same network ml2/ovs+dvr

    On a recent change [1], some additional checks was added to avoid
    ports overlapping cidrs on a router. On this change was also added
    a check to do not attach more than one port IPv6 from same network,
    but this check need to allow multiple ports when a deployment is
    done using ml2/ovs+xvlan+dvr and the router has an external gateway
    configured, because two ports are added:

    - one with device_owner as network:router_interface_distributed
    - another one with device_owner as network:router_centralized_snat

    Also an small improvement is done for just run this check over the
    existing ports on the router for the same network_id.

    [1] https://review.opendev.org/c/openstack/neutron/+/859143

    Closes-Bug: #2002800
    Change-Id: I765a7b41e7e84f42a3180dfd15e3a41a8e085284
    (cherry picked from commit e2097157bba6f18c4e30069ad76f9e1409ea1c0a)