OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:62:18:ba:ef:f5:01
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:32:5c:cd:35:3d:2e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:66:89:49:b6:a3:21
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:27:cf:c5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:27:cf:c5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
