OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:23:56:2c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:ba:f4:73:c1:40:99
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:f2:7d:66:75:f3:c4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:9e:93:81:5d:60:c8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:23:56:2c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
