OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:8a:09:7e:59:1f:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:d7:38:7d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:b6:a5:e2:4f:be:7b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:66:59:a8:73:b6:1c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:d7:38:7d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
