OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-176c01-0): addr:52:43:fd:aa:5a:21
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:5a:ec:c0:59:be:61
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
