OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:2e:0e:97:80:3d:02
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:d6:f5:fe:d9:97:5f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:12:59:79:53:56:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:c9:bd:f6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:c9:bd:f6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
