OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:46:2b:5c:55:76:c1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:3e:62:3f:4f:82:b2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:22:80:d7:04:f4:82
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:45:22:cb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:45:22:cb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
