OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:f6:f0:38:f6:97:1d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:c6:e5:aa:28:2a:d9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:da:0c:d8:2c:50:d4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:77:bf:a8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:77:bf:a8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
