OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:6e:6f:20:a9:40:12
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:1a:4f:44:64:68:24
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:56:7b:39:c4:1a:a1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:80:9a:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:80:9a:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
