OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-e5f102-0): addr:8a:ad:81:8d:d2:83
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(tapa8897fbc-9f): addr:fe:16:3e:a9:40:5c
     config:     0
     state:      0
     current:    10MB-FD COPPER
     speed: 10 Mbps now, 0 Mbps max
 3(tap67eed0ac-d0): addr:4a:bd:bf:8a:ab:d8
     config:     0
     state:      0
     current:    10GB-FD COPPER
     speed: 10000 Mbps now, 0 Mbps max
 4(patch-br-int-to): addr:3e:ef:6c:c5:59:2c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:8e:1a:6e:86:52:9a
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
