OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:72:ee:16:4c:f6:55
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:36:cb:69:80:27:ab
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:9e:d5:bc:22:0d:3d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:7a:be:16
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:7a:be:16
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
