OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:36:45:ee:2c:3a:74
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:06:aa:96:58:45:96
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:a6:6a:49:94:1d:fd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:32:89:31
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:32:89:31
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
