OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:eb:5c:23
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:ea:22:72:47:98:00
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:a6:69:2b:34:25:96
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:be:36:a5:f2:dc:d4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:eb:5c:23
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
