OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-f38b9a-0): addr:36:9e:80:32:56:fc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-eaecfe-0): addr:4e:04:95:a6:40:2f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-9b12ad-0): addr:d6:3a:6b:52:ed:89
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:8a:c0:ea:ad:f4:d4
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
