OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:1a:51:c1:b5:c1:8c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:2e:39:5b:94:47:24
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:a2:86:37:01:1b:c8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:6d:c0:0b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:6d:c0:0b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
