OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:fe:c3:22:c2:de:d5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:46:b0:51:c4:6c:cd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:4a:3e:d1:70:da:ce
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:5f:12:0b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:5f:12:0b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
