OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-150d59-0): addr:a2:4a:01:68:4a:2b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-03fe05-0): addr:b6:ba:9f:80:33:4b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-9f96b9-0): addr:b2:69:c9:ba:ed:2b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:4a:de:f5:e1:d4:d9
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
