OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-17721b-0): addr:de:1f:43:f3:e3:47
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:ca:79:f2:6c:ee:0d
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
