OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:fa:08:2b:74:d9:ef
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:d6:74:8b:08:4e:a7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:7e:eb:0b:8f:75:fc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:f2:c8:06:56:91:07
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(eth1): addr:fa:16:3e:9c:00:80
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:9c:00:80
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
