OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:ce:bd:16:9f:72:a7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:22:1d:bb:35:3c:6d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:06:39:70:c4:c8:05
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:41:ab:a2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:41:ab:a2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
