OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:1e:0e:9e:73:78:7c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:92:b7:3d:d4:11:de
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:da:45:b8:7f:06:45
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:9e:b7:31
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:9e:b7:31
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
