OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:5a:f3:40:60:e9:54
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:12:9a:d8:4f:ee:13
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:6e:9f:1c:80:13:0b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:57:46:7f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:57:46:7f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
