OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:2a:24:2b:67:13:76
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:7a:5d:3a:d9:5b:24
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:7e:88:cc:fa:e2:4f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:a7:d2:4b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:a7:d2:4b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
