OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:70:e0:b2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:f6:39:f2:12:8c:34
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:9a:0d:f7:01:03:c6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:42:f3:9b:61:de:71
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:70:e0:b2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
