OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-29f9eb-0): addr:92:23:2c:3c:5f:88
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:3a:64:fb:4f:25:a5
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
