OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:56:26:51:db:d6:d8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:f2:0d:31:90:56:b0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:b6:95:39:d1:fd:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:34:64:e4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:34:64:e4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
