OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:02:de:b0:da:cd:b2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:d6:26:94:4b:95:f0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:0a:16:77:cb:b7:cc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:94:e6:3b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:94:e6:3b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
