OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:c5:79:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:2e:fb:30:2f:e2:90
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:a2:29:af:64:b9:18
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:b2:ee:4c:1c:10:e9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:c5:79:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
