OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:a2:06:e5:97:d2:36
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:42:27:5b:13:74:81
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:9e:fa:ea:eb:f6:13
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:8b:02:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:8b:02:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
