BTW, this isn't only an l3-agent phenomenon, saw this in an ovs agent log file:
2016-01-18 09:12:55.382 WARNING neutron.agent.linux.iptables_manager [req-22b0e72f-04e2-489d-876f-8d58c7c4bffb None None] Duplicate iptables rule detected. This may indicate a bug in the the iptables rule generation code. Line: -A neutron-openvswi-od288dd2f-b -j RETURN
BTW, this isn't only an l3-agent phenomenon, saw this in an ovs agent log file:
2016-01-18 09:12:55.382 WARNING neutron. agent.linux. iptables_ manager [req-22b0e72f- 04e2-489d- 876f-8d58c7c4bf fb None None] Duplicate iptables rule detected. This may indicate a bug in the the iptables rule generation code. Line: -A neutron- openvswi- od288dd2f- b -j RETURN
So another change will need to fix that.