OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:f2:50:2f:7e:bd:48
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:ee:b1:7c:a0:93:62
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:56:74:69:84:99:c3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:34:22:a1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:34:22:a1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
