OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-93ccc3-0): addr:e6:9b:03:72:1a:50
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-63ef1f-0): addr:fa:50:95:68:3c:26
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:d6:f0:cc:2e:7e:1f
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
