OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:1a:dd:0b:e6:0b:f0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:ba:04:9c:15:b2:f0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:96:36:b3:d0:b8:c7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:ab:51:7c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:ab:51:7c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
