OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:06:57:58:1a:09:47
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:56:cc:d6:b0:6d:9a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:6a:86:f7:6b:ae:33
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:ba:0d:d3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:ba:0d:d3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
