OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:ea:58:50:4c:2a:47
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:36:94:69:0a:df:5c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:be:80:67:71:ba:5a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:5a:9b:be
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:5a:9b:be
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
