OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-bfb4c4-0): addr:d6:63:3a:10:74:73
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:ce:20:dc:c6:6e:b4
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
