OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:27:15:8d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:82:f8:18:f8:54:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:1e:80:05:c2:8b:29
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:ea:a1:ad:ec:c8:9d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:27:15:8d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
