OFPST_PORT_DESC reply (xid=0x2):
 2(ovn-2c8245-0): addr:da:f1:1b:4d:0a:a1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:d2:4b:d5:e4:a5:8d
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
