OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:b8:41:3e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:26:08:41:32:df:13
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:be:3d:0a:60:fa:fb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:7e:e1:29:a2:a9:2f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:b8:41:3e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
