OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:d2:ea:5f:7c:4e:9a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:76:42:d8:d2:99:cd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:3e:1d:3c:b9:df:fe
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:bb:d9:6a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:bb:d9:6a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
