OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:de:a9:6a:cd:bb:57
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:be:11:9a:fc:9b:bb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:4e:56:b3:58:df:be
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:a3:1b:31
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:a3:1b:31
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
