OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:73:a6:9e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:fa:89:de:35:3f:f8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:26:57:25:99:93:f5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:1a:92:61:f3:eb:30
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:73:a6:9e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
