OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:fb:ab:46
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:5a:d1:c7:0e:2b:55
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:82:62:a7:6b:0a:a6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:ba:6b:cb:d7:f3:5b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:fb:ab:46
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
