OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:16:0f:e9:c9:32:74
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:32:08:a0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:be:a2:93:59:72:30
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:e6:ae:aa:ae:cc:25
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan21): addr:9a:c1:d2:38:4c:de
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:32:08:a0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
