OFPST_PORT_DESC reply (xid=0x2):
 2(ovn-590bfd-0): addr:5a:19:46:1c:0f:8b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:12:cd:22:79:71:57
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
