Comment 9 for bug 1928738

By dump the: br-tun, we found there is one arp rule in table-21:
[root@overcloud-controller-pl-36-1 ~]# ovs-ofctl dump-flows br-tun | grep "fa:16:3e:63:d0:39"
 cookie=0x56431b3cae6a278, duration=1226228.810s, table=21, n_packets=23, n_bytes=966, idle_age=65534, hard_age=65534, priority=1,arp,dl_vlan=35,arp_tpa=10.0.0.7 actions=load:0x2->NXM_OF_ARP_OP[],move:NXM_NX_ARP_SHA[]->NXM_NX_ARP_THA[],move:NXM_OF_ARP_SPA[]->NXM_OF_ARP_TPA[],load:0xfa163e63d039->NXM_NX_ARP_SHA[],load:0xa000007->NXM_OF_ARP_SPA[],move:NXM_OF_ETH_SRC[]->NXM_OF_ETH_DST[],mod_dl_src:fa:16:3e:63:d0:39,IN_PORT

That matches the GARP and detail explanation from link:
https://wiki.openstack.org/wiki/Ovs-flow-logic#OVS_flows_logic_with_local_ARP_responder

Thanks,
Mark