OFPST_PORT_DESC reply (xid=0x2):
 2(ovn-293e16-0): addr:66:62:9f:70:8c:0d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:aa:74:fb:9c:5e:9e
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
