OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:56:d2:78
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:52:a5:4c:19:30:49
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:62:68:2c:d3:8a:09
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:8a:97:08:53:c5:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:56:d2:78
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
