OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:ba:34:b8:6c:17:ee
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:01:e5:01
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:ce:54:21:a2:57:70
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:16:70:e9:b7:43:dc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:01:e5:01
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
