OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:42:1c:9c:8c:a1:60
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:a6:5d:7d:d7:a2:e7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:f6:7a:53:86:4d:af
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:d5:a0:08
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:d5:a0:08
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
