OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:2a:7b:6b:6d:62:d5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:2a:ea:60:3c:ab:84
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:32:48:8c:f4:06:ab
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:68:c5:d2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:68:c5:d2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
