OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:3e:4a:cf:eb:ab:d0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:9d:cc:9c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan23): addr:e2:a7:e5:be:8d:9e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:66:e9:aa:a7:c2:94
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan20): addr:b6:50:2c:c3:55:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:9d:cc:9c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
