OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-74721d-0): addr:5a:76:ce:d2:3b:53
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:86:74:72:99:b6:11
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
