OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-5d88f6-0): addr:d6:21:b0:51:52:89
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:1a:20:cc:1d:3e:d3
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
