OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:76:23:c4:d6:a4:58
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:c2:5b:5a:fd:94:2f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:42:e2:b0:64:06:77
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:71:cf:db
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(patch-provnet-8): addr:da:52:9b:f6:fa:cb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:71:cf:db
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
