OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:b2:37:b1:64:68:cc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:d3:65:af
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:02:83:40:3c:9e:25
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:46:0e:e0:ca:5b:2b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:d3:65:af
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
