OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:2c:02:88
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:5e:6e:57:1b:1e:1c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:d6:b5:09:d9:5b:d6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:72:ea:ce:37:4f:27
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:2c:02:88
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
