OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:8a:b9:88:2b:88:17
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:16:1a:94:4e:69:02
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:ae:87:1c:e9:2d:47
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:e2:6c:49
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:e2:6c:49
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
