OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:ea:d3:7d:04:59:3c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:fe:9f:dc:53:fd:52
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:82:64:c5:47:1d:af
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:a5:86:e7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:a5:86:e7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
