OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:b4:73:db
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:ee:a7:4c:5c:7c:dc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:a2:80:01:d0:a6:5f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:82:6a:7c:04:41:d4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:b4:73:db
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
