OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:5e:3c:0c:27:59:40
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:7f:89:69
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:c6:36:83:79:f8:92
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:c6:69:4d:32:f5:f8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:7f:89:69
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
