OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:3e:d0:b4:36:53:77
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:de:3c:bd:6c:7b:27
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:1a:82:e7:e0:33:c0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:7b:e8:b1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:7b:e8:b1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
