OFPST_PORT_DESC reply (xid=0x2):
 1(eth0): addr:fa:16:3e:f5:a0:97
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:92:d7:63:e8:19:51
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:3e:1e:4d:46:42:bf
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f5:a0:97
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
