OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:fa:f2:aa
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:92:f1:f9:fd:02:4b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan23): addr:3a:5a:92:03:b9:8f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:f6:e8:4a:49:80:0e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan20): addr:fa:b8:78:aa:7c:06
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:fa:f2:aa
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
