OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:16:c8:ea:4d:cf:79
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:96:ad:15:21:46:4e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:32:73:b0:59:34:d9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:9c:50:8c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:9c:50:8c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
