OFPST_PORT_DESC reply (xid=0x2):
 3(ovn-796c6d-0): addr:8a:ae:c7:1a:42:d9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:a6:f5:20:78:6c:db
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
