OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:f2:bc:16:02:c3:58
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:95:3a:2d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:0a:0e:5e:75:84:54
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:f2:0d:27:32:3a:3d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:95:3a:2d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
