OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-b4a8f4-0): addr:c2:8f:cf:a6:58:4f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-0ff73a-0): addr:fe:4c:ab:30:a6:ec
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-356046-0): addr:ee:81:d0:99:7b:c6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:1a:91:17:12:00:81
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
