OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:e6:4d:10
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:0e:e2:ec:2c:e8:8a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:ce:be:7b:99:c5:4f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:12:f5:f4:10:a7:cb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:e6:4d:10
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
