OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:aa:ee:6a:18:89:15
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:9e:73:6b:c0:ce:7c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:4a:bb:c6:a6:db:5f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:c4:c2:6b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:c4:c2:6b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
