OFPST_PORT_DESC reply (xid=0x2):
 1(vlan21): addr:e2:bc:b0:f9:da:e1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:2d:1c:b6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:d6:31:a5:e2:db:37
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:3a:48:9e:5d:24:57
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan23): addr:16:b7:3f:1b:f9:e2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 6(patch-provnet-0): addr:0a:bd:c9:67:fe:72
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ctlplane): addr:fa:16:3e:2d:1c:b6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
