OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:c2:18:4c:60:79:cc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:86:38:07:0c:00:83
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(eth0): addr:fa:16:3e:1f:22:d5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:1f:22:d5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
