OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:07:08:c5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:02:7d:22:5e:3b:87
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:6a:d4:e0:53:b1:df
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:be:9b:24:e7:57:68
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:07:08:c5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
