OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:46:32:91:fc:9e:55
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:86:0e:ac:59:9e:bd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:9a:2e:12:75:d3:2a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:16:f9:c8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:16:f9:c8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
