OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-9ec90e-0): addr:26:00:a5:61:36:be
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-325727-0): addr:42:b8:d2:4c:2c:20
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:ce:02:4e:8d:c4:4c
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
