OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:be:9d:4c:61:7f:51
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:6a:49:e9:6a:8d:fb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:9e:08:47:f2:a1:5b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:a2:31:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:a2:31:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
