OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:fa:8e:87:83:55:11
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:0f:46:39
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:ea:03:bf:b8:bc:73
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:0e:21:39:5e:a4:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:0f:46:39
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
