OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-ad021b-0): addr:ba:93:cd:13:a6:cf
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:ce:2d:51:9b:99:85
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
