OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:13:94:d4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:62:80:62:33:94:30
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan23): addr:3a:43:56:8c:cd:fc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:f6:73:f1:23:84:a1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan20): addr:12:e5:91:00:93:77
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:13:94:d4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
