OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:7e:6f:8a:eb:02:93
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:da:af:3f:07:90:d9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:96:74:ce:d2:36:5f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:6d:3d:10
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:6d:3d:10
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
