OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:ac:2e:e2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:b6:04:1d:6b:a6:ec
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:42:d5:68:6e:af:65
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:f6:cb:de:27:97:64
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:ac:2e:e2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
