OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:9d:84:37
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:8e:4e:ba:bf:32:09
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:fe:5c:2b:de:da:6b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:f2:fe:3e:1e:3c:1e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:9d:84:37
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
