OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:8e:23:ad:9e:ac:ac
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:c6:5f:38:45:53:7d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:42:9c:9b:73:7e:d3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:4a:0b:61
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:4a:0b:61
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
