OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-65bc68-0): addr:fa:d0:8f:fd:72:f5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(tap64dfc81b-52): addr:fe:16:3e:cc:aa:96
     config:     0
     state:      0
     current:    10MB-FD COPPER
     speed: 10 Mbps now, 0 Mbps max
 3(tapd4dded16-30): addr:8a:b3:47:3e:50:1b
     config:     0
     state:      0
     current:    10GB-FD COPPER
     speed: 10000 Mbps now, 0 Mbps max
 4(patch-br-int-to): addr:9a:05:7b:62:1f:fb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:ea:a5:10:53:fe:41
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
