OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:b2:5f:d5:06:1b:1e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:c2:a9:f8:55:3c:7d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:aa:79:2d:23:12:0e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:9b:0b:fd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:9b:0b:fd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
