OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-ad1c25-0): addr:ae:95:fd:bb:08:30
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:6e:e2:57:f3:c1:d9
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
