OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:2e:dd:6f:f1:72:00
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:23:4e:fa
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:46:3c:e6:b1:5f:10
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:06:2b:17:a5:57:07
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:23:4e:fa
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
