OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:36:0a:73:e8:19:3d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:22:11:8f:26:47:03
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:c6:39:19:38:fe:0c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:5e:93:5b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:5e:93:5b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
