diff --git a/defaults/main.yml b/defaults/main.yml
index 9f7c65e3..b22e2418 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -333,7 +333,7 @@ neutron_notifications_designate: notifications_designate
 #   - vpnaas
 #   - metering
 #   - qos
-#   - dns
+#   - dns/subnet_dns_publish_fixed_ip either one or the other, not both
 #   - port_forwarding
 neutron_plugin_base:
   - router
diff --git a/releasenotes/notes/adding-new-neutron-plugin_base-extension-dbe31debf2187ed1.yaml b/releasenotes/notes/adding-new-neutron-plugin_base-extension-dbe31debf2187ed1.yaml
new file mode 100644
index 00000000..a81f6d19
--- /dev/null
+++ b/releasenotes/notes/adding-new-neutron-plugin_base-extension-dbe31debf2187ed1.yaml
@@ -0,0 +1,7 @@
+---
+upgrade:
+  - |
+    Adds the ``subnet_dns_publish_fixed_ip`` option extension in ml2 plugin.
+    The subnet-dns-publish-fixed-ip extension adds a new attribute to the
+    definition of the subnet resource. When set to true it will allow
+    publishing DNS records for fixed IPs.
diff --git a/templates/neutron.conf.j2 b/templates/neutron.conf.j2
index 1661ee56..ddb603e6 100644
--- a/templates/neutron.conf.j2
+++ b/templates/neutron.conf.j2
@@ -2,7 +2,7 @@
 {% set neutron_plugin_loaded_base = [] %}
 
 {% for plugin in neutron_plugin_base %}
-  {% if plugin not in ['dns', 'dns_domain_ports'] %}
+  {% if plugin not in ['dns', 'dns_domain_ports', 'subnet_dns_publish_fixed_ip'] %}
       {% set _ = neutron_plugin_loaded_base.append(plugin) %}
   {% endif %}
 {% endfor %}
diff --git a/templates/plugins/ml2/ml2_conf.ini.j2 b/templates/plugins/ml2/ml2_conf.ini.j2
index ed5b4594..dada1670 100644
--- a/templates/plugins/ml2/ml2_conf.ini.j2
+++ b/templates/plugins/ml2/ml2_conf.ini.j2
@@ -5,7 +5,7 @@
 type_drivers = {{ neutron_plugins[neutron_plugin_type].drivers_type }}
 tenant_network_types = {{ neutron_provider_networks.network_types if neutron_provider_networks.network_types != '' else 'local' }}
 mechanism_drivers = {{ neutron_ml2_mechanism_drivers }}
-extension_drivers = port_security{% if 'qos' in neutron_plugin_base %},qos{% endif %}{% if 'dns' in neutron_plugin_base %},dns{% endif %}{% if 'dns_domain_ports' in neutron_plugin_base %},dns_domain_ports{% endif %}
+extension_drivers = port_security{% if 'qos' in neutron_plugin_base %},qos{% endif %}{% if 'dns' in neutron_plugin_base %},dns{% endif %}{% if 'dns_domain_ports' in neutron_plugin_base %},dns_domain_ports{% endif %}{% if 'subnet_dns_publish_fixed_ip' in neutron_plugin_base %},subnet_dns_publish_fixed_ip{% endif %}
 
 {% if neutron_provider_networks.network_mappings is defined and (neutron_plugin_type == 'ml2.opendaylight' and ('odl-router_v2' in neutron_plugin_base or 'odl-router' in neutron_plugin_base)) %}
 bridge_mappings = {{ neutron_provider_networks.network_mappings }}