OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:d6:92:99:8b:89:c7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:3a:a6:65
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:b2:36:dc:34:61:a3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:76:b8:45:c4:a1:78
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(patch-provnet-6): addr:8a:ba:ff:aa:fd:5f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:3a:a6:65
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
