OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:fe:db:b9:09:32:e4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:16:8f:b8:af:24:a3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:6a:c1:f2:e5:5f:30
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:8b:c1:e6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:8b:c1:e6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
