OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:ae:61:38:ec:31:a8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:73:67:f1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:62:46:86:d2:1b:d1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:22:73:50:5d:17:d1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan20): addr:be:39:10:b8:58:3d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:73:67:f1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
