OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-7f5c9d-0): addr:42:8b:12:6f:9f:5b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-a988b0-0): addr:b6:24:2c:93:2a:22
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:fe:f4:73:cd:08:cc
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
