OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-00a8e4-0): addr:ca:62:74:26:5c:8c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:da:66:ca:a8:d0:8e
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
