OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-efbb91-0): addr:da:aa:bc:45:89:d7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:ba:9d:a0:7f:b0:bd
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
