OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:53:d5:81
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:92:be:86:37:db:d3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan23): addr:16:cf:4f:e6:0a:0c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:ea:dd:bc:ef:1d:bc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan21): addr:b6:5c:cd:e2:3b:39
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:53:d5:81
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
