Prior to this patch the IGMP configuration for ML2/OVN was inconsistent
with the configuration option description and also the ML2/OVS driver
because it was flooding traffic to unregistered VMs [0].
The "igmp_snooping_enable" configuration option says:
"Setting this option to True will also enable Open vSwitch
mcast-snooping-disable-flood-unregistered flag. This option will disable
flooding of unregistered multicast packets to all ports."
But, in ML2/OVN that behavior was inconsistent prior to this patch
because it allowed traffic to flood to unregistered VMs. This patch
fixes it.
[0]
https://opendev.org/openstack/neutron/src/branch/master/neutron/conf/agent/ovs_conf.py#L36-L47
Change-Id: I5cbe09e26120905b29351d61bbadb30b5dd14938
Closes-Bug: #1904399
Signed-off-by: Lucas Alvares Gomes <lucasagomes@gmail.com>
9dc8bca740