OFPST_PORT_DESC reply (xid=0x2):
 2(ovn-67ba89-0): addr:3a:74:a0:4e:4b:d1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:da:0a:0c:2b:d1:e1
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
