OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:02:4c:b8:a1:7b:e0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:ea:d3:e6:c4:f4:38
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:d2:cc:1d:9d:62:ff
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:ff:4b:a5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:ff:4b:a5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
