OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:96:08:9c:5a:33:fb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:a6:b5:d8:e4:78:31
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:3a:34:a6:4e:cb:0a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:b2:8d:db
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:b2:8d:db
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
