OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:de:50:9c:ee:82:ba
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:52:ea:54:2a:58:0c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:b2:45:09:e4:cb:93
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:72:d0:f4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:72:d0:f4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
