OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:5e:55:cf:15:dd:3d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan23): addr:1a:91:b6:d6:06:e2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:e6:45:60:36:bc:d3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:36:75:b2:04:4c:2d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(eth1): addr:fa:16:3e:55:ee:c1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:55:ee:c1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
