OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:62:c4:bf:aa:55:6d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:e2:fe:ee:f1:77:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:ba:7a:31:3f:54:67
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:64:0f:ae
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:64:0f:ae
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
