OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:16:05:01:ae:82:e2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:86:74:b5:76:15:5c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:de:45:9a:24:30:ea
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:5c:b6:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:5c:b6:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
