OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:a2:13:f3:66:76:35
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:ba:57:54:10:81:20
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:16:38:d8:ae:5e:c9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:5f:e8:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:5f:e8:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
