OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-1b4d19-0): addr:ea:bd:60:b4:a5:0c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:2a:08:0a:f4:4f:07
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
