OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-1d4a02-0): addr:da:e9:9b:eb:eb:93
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-61f597-0): addr:06:f0:ac:a4:71:a7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:3e:a1:9e:81:83:17
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
