OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:5e:35:6f:f2:91:bd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:c3:6a:1c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:4a:0d:28:52:2d:bc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:6a:f0:87:e2:0b:72
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:c3:6a:1c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
