OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:8a:58:31:ae:30:a0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:b2:d4:00:7c:80:85
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:ee:8b:1e:1c:ec:3a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:21:50:d3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:21:50:d3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
