OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:e6:b3:1b:e2:66:29
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:a6:9f:87:c3:b9:de
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:d6:04:04:93:c7:f3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:2c:14:9b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:2c:14:9b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
