OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:be:7a:f5:0d:fb:dc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:8a:e6:7f:2f:3d:85
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:2a:b4:09:77:c7:a5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:35:ab:e7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:35:ab:e7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
