OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:62:45:1e:20:93:03
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:42:bd:c8:b3:41:c3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:ea:f2:d6:f8:53:ee
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:02:ef:9f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:02:ef:9f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
