OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:4a:2e:bd:70:5f:82
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:6a:7e:38:90:58:48
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:b6:b2:8d:a0:fe:3e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:87:e5:c0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:87:e5:c0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
