Comment 14 for bug 1864225

Reviewed: https://review.opendev.org/714093
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=c4264b7ded8e5ac3cf5d96eebf5f170d5ea5f9ad
Submitter: Zuul
Branch: stable/train

commit c4264b7ded8e5ac3cf5d96eebf5f170d5ea5f9ad
Author: Harald Jensås <email address hidden>
Date: Fri Feb 28 03:09:05 2020 +0100

    subnet create - segment aware auto-addr allocation

    When creating additional subnets with ipv6 auto-addressing
    ip allocation was added to existing ports without filtering
    on current allocation's segment.

    This adds fitering to only add auto-address allocation when
    the new subnet is on the same segment as the ports current
    ipam allocations.

    Related: rhbz#1803989
    Related-Bug: #1864225
    Related-Bug: #1865138
    Closes-Bug: #1864333
    Change-Id: I75ae14c64db076434ca9897ba9a6d97702e233ad
    (cherry picked from commit 3d3dc60408148cf16bc19cccb76b8652f980fa1c)