OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:52:b5:54:2c:13:d8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:e2:6f:88:6f:00:41
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:16:bf:77:76:9b:79
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:89:89:b6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:89:89:b6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
