OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:5a:50:e6:bb:8b:f0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:b6:33:f4:11:11:e8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:e2:50:d1:d4:9e:8e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:11:9e:ee
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:11:9e:ee
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
