OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:56:49:71:d4:c0:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:35:e6:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:46:1e:ab:c0:44:57
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:86:00:3b:47:23:89
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:35:e6:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
