OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-e84d49-0): addr:ea:5d:e4:5b:65:ad
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-99e62d-0): addr:da:d2:1c:9a:ba:ad
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:32:44:e3:95:a1:0a
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
