OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:0a:bb:2e:5a:18:2c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:16:83:75:49:9a:46
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:8a:bb:16:da:a0:63
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:19:47:8d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:19:47:8d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
