OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:12:e8:69:fc:3b:4b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:2e:6f:2a:e4:2a:f9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:2a:ad:e1:c1:fc:7c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:37:46:9d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:37:46:9d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
