OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:a6:71:9d:8d:61:0b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:fe:33:21:ea:d9:01
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:6a:46:e7:d0:1e:8b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:37:c0:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:37:c0:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
