[root@nmtg-cpu001 ~]# ovs-vsctl show
87880d91-be76-4472-b11a-003113aa4345
    Bridge br-tun
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
        Port "gre-0a04000c"
            Interface "gre-0a04000c"
                type: gre
                options: {in_key=flow, local_ip="10.6.1.3", out_key=flow, remote_ip="10.4.0.12"}
        Port "gre-0a060104"
            Interface "gre-0a060104"
                type: gre
                options: {in_key=flow, local_ip="10.6.1.3", out_key=flow, remote_ip="10.6.1.4"}
        Port br-tun
            Interface br-tun
                type: internal
        Port "gre-0a04000b"
            Interface "gre-0a04000b"
                type: gre
                options: {in_key=flow, local_ip="10.6.1.3", out_key=flow, remote_ip="10.4.0.11"}
    Bridge br-int
        Port "qvo831403fc-8d"
            tag: 3
            Interface "qvo831403fc-8d"
        Port "qvofd5bb883-a4"
            tag: 3
            Interface "qvofd5bb883-a4"
        Port br-int
            Interface br-int
                type: internal
        Port "qvo93d39ce1-92"
            tag: 1
            Interface "qvo93d39ce1-92"
        Port "qvo02722581-14"
            tag: 1
            Interface "qvo02722581-14"
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
    ovs_version: "1.11.0"
[root@nmtg-cpu001 ~]# tcpdump -i patch-tun
tcpdump: patch-tun: No such device exists
(SIOCGIFHWADDR: No such device)
[root@nmtg-cpu001 ~]# tcpdump -i patch-int
tcpdump: patch-int: No such device exists
(SIOCGIFHWADDR: No such device)
[root@nmtg-cpu001 ~]# tcpdump -i br-tun
tcpdump: WARNING: br-tun: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on br-tun, link-type EN10MB (Ethernet), capture size 65535 bytes
^C
0 packets captured
0 packets received by filter
0 packets dropped by kernel
[root@nmtg-cpu001 ~]# tcpdump -i br-int
tcpdump: WARNING: br-int: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on br-int, link-type EN10MB (Ethernet), capture size 65535 bytes
13:28:11.826764 ARP, Request who-has 192.168.1.1 tell 192.168.1.5, length 28
13:28:12.825992 ARP, Request who-has 192.168.1.1 tell 192.168.1.5, length 28
13:28:13.825954 ARP, Request who-has 192.168.1.1 tell 192.168.1.5, length 28
13:28:14.827064 ARP, Request who-has 192.168.1.1 tell 192.168.1.5, length 28
13:28:15.825960 ARP, Request who-has 192.168.1.1 tell 192.168.1.5, length 28
^C
5 packets captured
5 packets received by filter
0 packets dropped by kernel
[root@nmtg-cpu001 ~]#