OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:de:d0:44:e3:68:3c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:8f:6b:19
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:b2:b0:1c:53:07:2e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:d6:5b:93:63:8c:6f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan20): addr:9a:0e:bb:f4:76:36
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:8f:6b:19
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
