OFPST_PORT_DESC reply (xid=0x2):
 2(ovn-1340bd-0): addr:76:da:b0:91:4a:de
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:2a:19:6c:ad:ef:af
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
