OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:72:96:a6:46:1f:62
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:71:83:76
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:ce:c7:09:07:2b:e7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:c2:19:02:4f:98:3d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:71:83:76
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
