OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:58:15:49
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:c2:40:fe:21:c4:7d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:ea:ba:9c:c5:9d:13
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:12:f0:f4:60:49:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:58:15:49
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
