OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-27de50-0): addr:5a:00:45:71:3e:57
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:8e:46:4b:0b:40:3f
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
