OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:22:64:cb:9d:15:c6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:6f:c5:ab
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:a6:b7:22:e5:3e:59
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:e2:af:8f:fb:2b:ce
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:6f:c5:ab
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
