OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:c6:01:ab:18:11:b8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:19:5c:69
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:ae:5e:3c:b1:bf:60
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:76:6d:9a:19:5d:2d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:19:5c:69
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
