OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:33:25:cf
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:e6:1e:7c:52:d3:4c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:be:2f:e6:9a:2b:9f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:9e:7a:01:c6:46:89
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:33:25:cf
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
