OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:12:30:30:6b:b7:9b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:c6:5b:3b:95:84:c1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:d2:ed:e8:6e:a7:ea
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:7f:81:9f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:7f:81:9f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
