OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:96:26:81:0a:01:9e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:2e:23:56:ce:2b:b7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:1e:16:b6:91:44:00
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:c7:1f:85
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:c7:1f:85
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
