OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:de:29:e0:69:11:61
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:62:4b:16:a5:ba:b9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:de:71:84:4e:02:d4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:4a:a9:b9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:4a:a9:b9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
