OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:82:77:16:ed:14:f8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:4a:bc:7b:ea:aa:a6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:e6:75:f0:0c:5d:1a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:83:50:56
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:83:50:56
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
