OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:fa:e5:c0:3f:1c:ca
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:d6:ac:a3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:6a:fc:e1:a2:b3:a1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:0e:a2:d9:01:4e:23
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:d6:ac:a3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
