OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:5e:5a:de:f3:a7:eb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:7a:01:e0:a8:b6:5b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:52:ce:df:fc:7d:67
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:05:bb:42
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:05:bb:42
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
