OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:2c:92:54
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:32:01:4b:79:d2:f0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:d6:aa:38:28:0d:53
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:32:76:f1:96:dc:0c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:2c:92:54
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
