OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:fa:66:53:33:0f:8a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:26:9b:5d:31:69:37
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:ea:d5:5f:8f:e0:b7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:93:b4:ed
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:93:b4:ed
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
