OFPST_PORT_DESC reply (xid=0x2):
 1(vlan21): addr:5a:3c:6d:6a:39:30
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan23): addr:3e:6f:00:91:02:13
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:ce:c1:83:78:3b:d1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan22): addr:02:db:5a:73:83:ad
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(eth1): addr:fa:16:3e:ee:9f:73
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 6(patch-provnet-1): addr:d6:c1:f8:4c:34:3d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ctlplane): addr:fa:16:3e:ee:9f:73
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
