OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:0a:84:82:fa:ae:3b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:16:5f:9c:c1:6f:96
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(eth1): addr:fa:16:3e:7a:c4:21
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan22): addr:16:5b:f6:63:52:30
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:7a:c4:21
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
