OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:ba:36:cf:6e:24:28
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:7e:bb:77:ed:f1:d1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:f2:db:f3:3f:bf:9d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:5b:d5:f6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:5b:d5:f6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
