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Enable distributed virtual routing (DVR) juno


I've been running OpenStack Juno (2014.2.3) in Centralised routing mode and have decided to enable its DVR feature. Following many guide, I enabled dvr in neutron.conf (controller, network, compute), l3_agent.ini (network, compute), and ml2_conf.ini. (is that all?)

After i restarted relating agents (l3, ovs) and neutron-server, i created new networks, routers and instances and do some traffic test. It seems that both traffic sent through floatingIP (DNAT) and traffic between subnets (east-west) still go through Network node. In other works, DVR is not working yet.

Do I need to perform any other configuration/update to enable DVR?