OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:7a:47:b2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:b6:83:c1:46:64:8c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:5e:fd:ed:65:28:fb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:12:04:de:7b:b2:87
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:7a:47:b2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
