OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:c6:ba:1b:4a:8b:c2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:32:cb:5c:8a:e0:b4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:82:e3:a9:db:12:18
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:ea:6e:bc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:ea:6e:bc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
