OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:aa:c6:1a:36:6d:b3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:a2:cb:fb:c7:89:9d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:8a:14:0e:83:23:c4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:f0:7e:b9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f0:7e:b9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
