OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:be:b5:55:b6:30:a0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:2a:74:61:81:c2:eb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:aa:eb:bd:0f:b5:44
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:89:c4:71
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:89:c4:71
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
