OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:a2:a8:9b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:2e:e6:4d:34:32:a7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:ee:3e:e8:10:2e:1b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:16:36:30:05:4c:e4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:a2:a8:9b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
