OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:0a:e8:0f:07:4b:c6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:f2:10:c1:1f:22:95
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:8e:8b:ad:25:40:16
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:b9:cb:2c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:b9:cb:2c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
