OFPST_PORT_DESC reply (xid=0x2):
 1(vlan23): addr:22:a2:5d:e1:d9:63
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:12:47:4b:ab:fd:d4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:3a:33:cd:9d:6e:58
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:30:8c:e9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan21): addr:72:6c:37:28:30:42
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 6(patch-provnet-1): addr:8e:47:45:f2:37:90
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ctlplane): addr:fa:16:3e:30:8c:e9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
