OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:66:07:03:31:4c:12
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:53:cc:50
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:b2:81:86:67:48:6b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:02:76:a6:64:dd:49
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan23): addr:3e:0a:3a:c1:25:b3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:53:cc:50
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
