OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:c8:00:36
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:76:4b:50:43:05:56
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:fe:a3:bc:a0:80:69
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:92:dd:c4:9b:44:97
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan23): addr:ce:8f:f3:3c:b4:37
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:c8:00:36
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
