OFPST_PORT_DESC reply (xid=0x2):
 1(vlan21): addr:3a:ad:61:a5:8e:c5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:d5:2b:e9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan23): addr:b6:ca:f2:58:8a:8c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:16:30:2e:e2:99:a1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan22): addr:e6:e2:42:e0:d5:ee
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 6(patch-provnet-b): addr:22:1b:45:43:30:0d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ctlplane): addr:fa:16:3e:d5:2b:e9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
