OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:16:91:ea:1b:f6:73
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:6a:a6:4b:ee:47:e6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:82:53:78:f2:39:7b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:52:0a:17:c3:cb:27
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(eth1): addr:fa:16:3e:93:ce:df
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:93:ce:df
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
