OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:d6:5f:0a:89:f6:2b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:ca:55:f0:13:26:c5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:52:2a:26:1c:86:1e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:f3:e8:5e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f3:e8:5e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
