diff --git a/lib/neutron b/lib/neutron
index 1066d8e342..17ffce7cb5 100644
--- a/lib/neutron
+++ b/lib/neutron
@@ -237,6 +237,7 @@ function configure_neutron_new {
             if [[ "$NEUTRON_DISTRIBUTED_ROUTING" = "True" ]]; then
                 iniset $NEUTRON_CORE_PLUGIN_CONF agent l2_population True
                 iniset $NEUTRON_CORE_PLUGIN_CONF agent enable_distributed_routing True
+                iniset $NEUTRON_CORE_PLUGIN_CONF agent arp_responder True
             fi
         fi
 
diff --git a/lib/neutron_plugins/ml2 b/lib/neutron_plugins/ml2
index c5a4c02cc5..a7466833e1 100644
--- a/lib/neutron_plugins/ml2
+++ b/lib/neutron_plugins/ml2
@@ -147,6 +147,7 @@ function neutron_plugin_configure_service {
         populate_ml2_config /$Q_PLUGIN_CONF_FILE agent l2_population=True
         populate_ml2_config /$Q_PLUGIN_CONF_FILE agent tunnel_types=vxlan
         populate_ml2_config /$Q_PLUGIN_CONF_FILE agent enable_distributed_routing=True
+        populate_ml2_config /$Q_PLUGIN_CONF_FILE agent arp_responder=True
     fi
 }