OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:ff:40:16
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:66:a5:58:bd:fa:74
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:5e:64:7d:83:a3:e8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:2e:29:08:a9:c0:02
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:ff:40:16
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
