OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:f9:fb:83
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:8a:fb:b6:ec:db:fd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:52:a2:57:64:9d:d8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:36:14:66:ff:3c:10
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f9:fb:83
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
