OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:ce:ea:ab:e5:a6:d8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:de:76:26:eb:57:0d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:46:2a:5b:00:78:e7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:96:c9:bd:ab:20:36
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(eth1): addr:fa:16:3e:d7:68:c5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:d7:68:c5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
