OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-f59cdb-0): addr:d2:23:4b:f7:2b:43
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-c06836-0): addr:52:40:c4:8c:f6:24
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-5c3074-0): addr:ca:a3:79:8c:c8:06
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:ca:bb:74:20:ed:89
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
