OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:12:ad:b6:ee:39:80
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:56:b5:9e:f9:6e:03
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:f6:0b:ae:42:72:9b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:96:48:6f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:96:48:6f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
