OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:fe:41:45:01:4b:f6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:9a:eb:eb:59:40:1e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:36:8f:c7:a8:61:c5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:0c:9c:90
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:0c:9c:90
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
