OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-b356ea-0): addr:7a:49:e3:9f:9c:31
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 15(tap88cafd88-69): addr:fe:16:3e:bc:32:ec
     config:     0
     state:      0
     current:    10MB-FD COPPER
     speed: 10 Mbps now, 0 Mbps max
 16(tap381d3cc3-40): addr:8a:4a:fe:88:1d:66
     config:     0
     state:      0
     current:    10GB-FD COPPER
     speed: 10000 Mbps now, 0 Mbps max
 17(tap9fe70178-17): addr:fe:16:3e:c6:04:d5
     config:     0
     state:      0
     current:    10MB-FD COPPER
     speed: 10 Mbps now, 0 Mbps max
 18(tap4a850b1c-c0): addr:52:03:cd:15:cb:9b
     config:     0
     state:      0
     current:    10GB-FD COPPER
     speed: 10000 Mbps now, 0 Mbps max
 19(patch-br-int-to): addr:ca:a3:53:99:dc:5e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:2a:70:d4:37:e1:94
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
