OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-4984e1-0): addr:9a:e4:fe:0e:0d:58
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-e686e2-0): addr:12:e2:7c:12:ce:24
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-73ab13-0): addr:6a:bf:6a:f8:a8:9d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:46:f4:1c:71:0c:32
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
