OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:86:9c:28:e1:8e:f9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:1e:02:96:e3:f7:bd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:c2:e8:d0:72:0a:19
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:8f:8a:ee
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:8f:8a:ee
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
