OFPST_PORT_DESC reply (xid=0x2):
 1(vlan21): addr:7a:bf:5b:0e:ce:97
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:46:bb:ea:42:db:9d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:f6:3d:93:e9:fe:27
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:e2:63:8c:08:83:51
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(eth1): addr:fa:16:3e:fc:31:47
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:fc:31:47
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
