OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:66:c5:a8:a5:1a:ac
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:fe:68:10:71:14:ae
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:fe:4c:e0:88:4d:a5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:0a:ba:a7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:0a:ba:a7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
