OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:d2:5a:3b:95:40:e4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:15:d5:31
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:9a:ae:87:9c:42:69
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:1e:9b:3c:b6:6c:04
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 6(patch-provnet-f): addr:72:e9:fc:90:98:3c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:15:d5:31
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
