OFPST_PORT_DESC reply (xid=0x2):
 2(ovn-c4b191-0): addr:86:90:9e:03:02:50
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:fe:cf:c8:2a:c5:da
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
