OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:26:8c:2a:af:7e:55
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:4b:6d:c2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:fa:94:39:79:0a:15
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:e2:cd:3a:dd:5f:58
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan21): addr:ba:68:b1:b3:dd:c7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:4b:6d:c2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
