OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:a6:b5:ee:5f:00:2a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:72:64:0a:e9:45:7d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:52:bd:65:8f:99:b6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:7e:d0:74
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:7e:d0:74
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
