OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-4d1543-0): addr:72:36:18:72:7b:8f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-d3d811-0): addr:4a:62:6c:74:79:b5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-c2a760-0): addr:46:1e:01:64:c3:69
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:26:70:84:29:07:bf
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
