OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:e6:c8:20
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:3a:96:56:7f:71:b2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:7e:9a:1c:76:f8:fd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:1e:7a:85:ab:0a:05
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:e6:c8:20
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
