OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:6a:e4:0b:c1:29:94
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:6a:c5:91:81:64:1d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:a2:31:2a:9a:2b:8d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:92:c0:b4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:92:c0:b4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
