OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:42:c8:5c:81:07:01
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:c2:00:c2:20:f4:5b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:b2:db:f1:eb:23:f5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:de:58:c8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:de:58:c8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
