OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:16:ec:38:bc:db:8f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:c2:ef:5b:09:c5:3f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:02:5b:e9:4c:b4:59
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:f6:9f:f2:45:94:c6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(eth1): addr:fa:16:3e:3e:f6:21
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:3e:f6:21
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
