OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:92:d5:8b:42:75:47
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:4e:5d:06:51:dd:ff
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan23): addr:0e:b7:1a:cd:d2:40
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:fe:a5:9e:e7:c1:c9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(eth1): addr:fa:16:3e:05:79:b0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:05:79:b0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
