OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:12:29:3d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:0a:54:79:d7:72:27
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:a2:ba:7a:92:38:21
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:fa:4d:80:9f:3b:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan21): addr:56:2b:8b:f5:a2:79
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:12:29:3d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
