OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-0051b1-0): addr:42:1a:90:ff:ee:a1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:0a:ee:e9:47:de:f0
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
