OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:0e:54:87
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:62:cc:66:cb:14:f0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:56:79:58:34:01:ce
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:8e:05:8c:c6:6f:02
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:0e:54:87
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
