OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:8f:a2:f5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:a6:bc:43:06:f6:10
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:96:2a:e9:3c:cd:a1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:c6:b1:af:71:9d:6c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:8f:a2:f5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
