OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:7e:83:61:d3:42:45
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:12:b9:9f:52:6d:13
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:0a:33:fe:96:60:be
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:5a:44:19
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:5a:44:19
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
