OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:7e:55:dc:a6:9c:88
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:67:fb:91
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:ce:c4:b8:22:20:27
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:e2:64:14:d0:f9:36
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:67:fb:91
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
