OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:f4:4f:3d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:8e:b3:59:89:ec:52
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:3a:fa:45:bf:78:48
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:46:e4:19:05:3a:bc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan23): addr:aa:93:63:6e:9e:93
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f4:4f:3d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
