OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:00:5a:ce
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:5e:44:fa:e3:5e:13
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:ea:94:a3:cd:74:6b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:16:1f:c8:41:68:6e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:00:5a:ce
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
