OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-1d4a02-0): addr:d6:e6:22:b7:28:76
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-66c4bc-0): addr:4a:2c:a1:5d:fd:3b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:5a:aa:a2:af:ee:72
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
