OFPST_PORT_DESC reply (xid=0x2):
 1(vlan21): addr:66:39:82:65:1b:87
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan23): addr:82:ad:5a:ed:6c:79
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:7e:a8:db:7f:25:2f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:9f:69:ba
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan22): addr:b6:69:dc:3a:3b:e2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 6(patch-provnet-7): addr:da:b9:5c:e2:68:8e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ctlplane): addr:fa:16:3e:9f:69:ba
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
