OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:26:e3:f5:24:af:94
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:6e:f6:90:08:01:80
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:12:cd:f9:05:37:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:1c:78:8b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:1c:78:8b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
