OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:9d:8e:e2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:8a:7a:42:31:d5:72
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:02:c8:23:ec:0e:14
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:5a:f6:1a:78:42:cf
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:9d:8e:e2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
