OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:6a:0d:96:8c:a6:fa
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:4c:68:69
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan23): addr:da:0c:92:d8:12:a3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:b6:a7:55:07:a5:ab
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan20): addr:96:35:a3:e6:a4:10
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:4c:68:69
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
