OFPST_PORT_DESC reply (xid=0x2):
 1(eth0): addr:fa:16:3e:61:09:87
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:d6:6f:95:17:30:93
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:36:c2:9c:f0:a6:e2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:b6:59:00:37:ff:b5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:61:09:87
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
