Comment 2 for bug 1649747

@Ihar, seems it didn't use that filter, but besides that I think it should not call https://github.com/openstack/neutron/blob/master/neutron/agent/common/ovs_lib.py#L452 as the above line should match as we already set the external-ids, I found we use https://github.com/openstack/nova/blob/master/nova/virt/xenapi/vif.py#L545 to create ovs port and its related params in external-ids, but we separate this to several command, I will check this part first and then checking why the filter didn't take affect