OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:0e:1b:1e:16:ac:41
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:76:ac:d3:3b:27:4c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:7a:ca:c7:04:7f:14
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:31:4e:e1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:31:4e:e1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
