OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:c6:46:35:31:d1:9d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:a6:a8:be
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:a2:fb:1c:f2:89:0f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:3e:72:f1:3c:65:e8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:a6:a8:be
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
