OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:20:96:19
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:06:27:05:d9:e8:1d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:5a:a2:06:21:15:c6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:ba:42:7a:08:7b:77
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:20:96:19
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
