OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:32:32:a9:a3:65:45
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:c2:fe:fa:ad:b8:7a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:aa:b0:e6:b5:3b:d3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:bc:8f:37
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:bc:8f:37
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
