OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:be:c8:7a:ec:84:5c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:fe:87:59:e8:72:87
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:3a:14:10:79:a7:00
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:22:b6:45
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:22:b6:45
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
