OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:4a:4a:76:46:65:2b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:52:aa:25:7a:4b:6c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:fe:3a:31:dd:84:5c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:8a:59:78
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:8a:59:78
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
