OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:ce:4b:ab:db:48:45
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:ea:3c:53:a3:00:21
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:aa:d3:b9:80:c1:03
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:2f:e5:30
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:2f:e5:30
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
