OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:d6:f1:55:a1:15:3c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:5e:cb:1e:31:c5:73
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:4e:30:48:05:d1:1c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:5c:48:54
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:5c:48:54
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
