OFPST_PORT_DESC reply (xid=0x2):
 1(vlan21): addr:be:e3:72:dd:d4:52
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:a6:d9:8b:78:b2:b0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:66:4a:4d:5b:7e:0d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:ea:12:83:7c:fb:f9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(eth1): addr:fa:16:3e:10:ee:5d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:10:ee:5d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
