OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:ea:24:21:5c:34:00
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:ba:83:90:6b:d9:de
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:3e:d8:62:1d:d6:63
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:60:9f:d2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:60:9f:d2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
