OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:8e:1d:a4:09:55:86
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:d6:04:3b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:ea:3b:18:9c:b4:48
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:2e:c8:dc:41:f9:f3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:d6:04:3b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
