OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:b2:6d:8e:19:bd:c3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:ee:b0:e1:a9:bf:68
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:0e:78:f4:21:e1:48
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:37:cc:cf
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:37:cc:cf
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
