OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:96:1b:bf:f9:69:9c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth0): addr:fa:16:3e:85:25:9e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:6a:b6:51:78:b1:22
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:85:25:9e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
