OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:52:9e:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:06:5f:4f:c3:61:00
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:62:db:f8:2f:84:a2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:4a:8a:1c:94:ef:65
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:52:9e:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
