OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:96:be:52:6a:e4:55
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:36:fd:c2:f3:43:8c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:12:b0:cb:22:12:10
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:0e:46:f9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:0e:46:f9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
