OFPST_PORT_DESC reply (xid=0x2):
 1(vlan21): addr:82:d9:12:56:c5:67
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:62:ce:10:66:32:85
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:36:ed:91:db:76:80
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:f6:fb:f8:e4:47:e3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(eth1): addr:fa:16:3e:d3:b3:e7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 6(patch-provnet-b): addr:1a:38:e9:ce:0f:91
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ctlplane): addr:fa:16:3e:d3:b3:e7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
