OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:b2:e3:37:39:3b:cb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:46:80:0f:29:d8:e4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:52:cc:2a:17:23:51
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:a2:86:01
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:a2:86:01
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
