OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:2e:b6:60:2c:a9:e1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:aa:70:ea:b8:66:c7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:5a:df:19:22:c4:44
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:5f:ff:e6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:5f:ff:e6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
