OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:6e:2f:1c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:f6:61:52:68:68:09
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:42:3e:f4:a7:6a:37
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan22): addr:b6:6e:7e:44:70:ef
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan44): addr:c6:34:21:0a:c6:a1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 6(vlan23): addr:b6:db:fe:3c:de:50
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 7(patch-provnet-4): addr:9a:6f:bc:a3:1d:2f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:6e:2f:1c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
