OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:1a:fc:1e:8e:c3:ad
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:52:59:9e:0f:42:87
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:0a:58:fc:75:c5:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:df:ca:c0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:df:ca:c0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
