OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:a1:9a:35
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:c2:8b:26:df:58:54
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:22:e3:2f:e6:8e:ed
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:7a:8e:c4:e3:a5:56
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan20): addr:4e:e5:61:bc:f9:cc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:a1:9a:35
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
