OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:2a:d2:6f:dc:37:cb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:ee:68:6b:e8:2a:43
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan23): addr:b6:73:12:0a:54:b1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:b2:d6:f6:c8:f6:86
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(eth1): addr:fa:16:3e:b7:2f:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:b7:2f:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
