OFPST_PORT_DESC reply (xid=0x2):
 2(ovn-5729fc-0): addr:8a:7f:00:68:51:e2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:3a:c4:ed:e7:6f:da
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
