OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:a2:8b:4d:4f:b7:c1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:66:26:24:e3:43:f5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:76:f9:b9:e3:7c:39
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:c6:c3:5a:a7:f5:52
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(eth1): addr:fa:16:3e:bb:c0:1b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:bb:c0:1b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
