OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-d64a38-0): addr:b6:0a:c6:0d:3e:33
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-45788f-0): addr:52:eb:f8:95:18:6c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:0a:72:4f:9e:ad:4b
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
