i found that linuxbridget call rpc to api server,call method is 'get_devices_details_list' and pass a param agent_id to rpc server. and i also found that param agent_id does not used in api server, it is just user to debug output message, so i think agent_id is just to used for mark the incoming agent. and if it is used like that, why doesn't use agent uuid instead of 'lb'+pythical_interface mac(like lb00505636ff2d), because uuid is more quickly to see the incoming linuxbridge host than mac address. of course you have another ways to know the incoming linuxbrige host linke param host,so why not delete the useless param
./server.log:48649:2016-06-27 16:36:56.403 108124 DEBUG neutron.plugins.ml2.rpc [req-d8a17733-6e4e-4012-8157-e7b9403c127d - - - - -] Device tapb57d75e8-f4 details requested by agent lb00505636ff2d with host com-net get_device_details /usr/lib/python2.7/site-packages/neutron/plugins/ml2/rpc.py:70
