OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-d38dbb-0): addr:1e:f7:4d:cb:8a:d4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 11(tap1b57ca02-bb): addr:fe:16:3e:89:51:2f
     config:     0
     state:      0
     current:    10MB-FD COPPER
     speed: 10 Mbps now, 0 Mbps max
 12(tap8774eb2f-a0): addr:02:e7:b1:7d:b5:cd
     config:     0
     state:      0
     current:    10GB-FD COPPER
     speed: 10000 Mbps now, 0 Mbps max
 13(patch-br-int-to): addr:ce:c7:84:3e:93:aa
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:92:a5:11:93:61:3e
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
