OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:aa:c8:3a:c7:df:6b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:32:89:40:8b:5d:01
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:12:f8:18:44:ad:61
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:33:3e:75
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:33:3e:75
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
