OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-20bf74-0): addr:c6:a8:66:0a:1b:a8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:c2:93:a7:e1:8d:9f
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
