OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:04:e5:10
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:66:31:20:9e:cf:3e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:ae:86:02:c7:2e:c7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:42:07:75:d5:1a:90
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:04:e5:10
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
