OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-d96682-0): addr:7a:89:23:03:be:bf
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-3a9d7e-0): addr:f6:6b:de:ab:66:8c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:4a:46:f2:fd:75:86
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
