Comment 8 for bug 1899967

Reviewed: https://review.opendev.org/759679
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=d842d0dbf0e1870595eb9d1bf168691832cec1aa
Submitter: Zuul
Branch: master

commit d842d0dbf0e1870595eb9d1bf168691832cec1aa
Author: Slawek Kaplonski <email address hidden>
Date: Mon Oct 26 13:52:31 2020 +0100

    [Docs] Add info about how multicast is treated by fw drivers

    This patch adds info about how multicast traffic is treated by
    openvswitch and iptables based firewall drivers.
    Patch [1] was trying to fix behaviour of OVS based driver to make
    it similar to how iptables drivers works but it introduced bug [2]
    which we wasn't able to fix without basically disabling what [1] did
    for some ports on the compute nodes.
    So based on that we decided to revert [1] - it is done in [3] and to
    document different behaviour between those 2 firewall drivers which is
    done by this patch.

    [1] https://review.opendev.org/#/c/748719/
    [2] https://bugs.launchpad.net/neutron/+bug/1899967
    [3] https://review.opendev.org/#/c/759555/

    Change-Id: If8a56579c62f58befdc57f5916a5763e9fb99531
    Related-Bug: #1899967
    Related-Bug: #1889631