OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:ef:23:18
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:76:d7:5e:bd:be:b7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:3a:56:ca:5c:31:33
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:4a:c1:e0:1b:6a:76
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:ef:23:18
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
