OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:ba:9c:32
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:7a:48:5c:9a:53:67
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:82:8e:da:9e:ce:8d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:0a:e3:cf:bf:44:21
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:ba:9c:32
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
