OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:57:b7:e2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:a6:29:01:84:43:a6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:c6:32:ca:a3:43:2d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:de:05:5f:db:05:f4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:57:b7:e2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
