OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:fa:35:16:e5:af:a5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:56:3b:08:2a:a5:5a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:5a:a1:86:d8:9d:35
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:c7:ff:2c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:c7:ff:2c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
