OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:fe:4c:56:a3:5b:90
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:be:c0:58:d9:ba:6d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:ae:79:e0:5a:8a:95
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:e8:88:18
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:e8:88:18
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
