OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:8e:d1:7a:c8:e6:82
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:32:ac:32:e7:41:88
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:56:ed:cd:87:9b:53
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:01:78:c1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:01:78:c1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
