OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-449d60-0): addr:2e:28:9c:ad:60:30
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-11d017-0): addr:ca:b3:76:20:6d:91
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:66:9a:b9:a6:3d:23
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
