OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-116624-0): addr:52:c4:d4:95:7c:fd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-66e142-0): addr:52:fa:0b:f8:d1:a7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-4d28b1-0): addr:86:5f:95:de:b4:03
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:1e:cb:a7:09:9f:7c
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
