OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:66:ef:c8:6e:bd:b6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:8e:8a:ae:2b:12:48
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:3a:8b:e5:56:48:c3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:f8:7a:b3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f8:7a:b3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
