OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:3a:b6:93:29:cd:a2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:6a:c8:f7:bd:c4:59
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:4a:ba:78:b0:f7:d6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:28:8a:96
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:28:8a:96
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
