OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:16:c7:60:82:d5:6b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:02:51:7e:12:3e:9a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:d6:77:2c:8a:88:91
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:1f:21:af
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:1f:21:af
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
