OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:9b:12:a5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:0e:c1:93:87:2c:bd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:da:e8:40:8f:85:d3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:9e:fe:e0:fa:8a:4b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:9b:12:a5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
