diff --git a/plugins/module_utils/interface.py b/plugins/module_utils/interface.py
index b2942acd..3d9936c9 100644
--- a/plugins/module_utils/interface.py
+++ b/plugins/module_utils/interface.py
@@ -35,6 +35,7 @@
     ipv6_gateway=dict(required=False, type='str'),
     blockpriv=dict(required=False, type='bool'),
     blockbogons=dict(required=False, type='bool'),
+    slaacusev4iface=dict(required=False, type='bool'),
 )
 
 INTERFACE_REQUIRED_IF = [
@@ -132,6 +133,10 @@ def _params_to_obj(self):
                 self._get_ansible_param(obj, 'ipv6_prefixlen', fname='subnetv6')
                 self._get_ansible_param(obj, 'ipv6_gateway', fname='gatewayv6')
 
+            if params['ipv6_type'] == 'slaac':
+                obj['ipaddrv6'] = 'slaac'
+                self._get_ansible_param_bool(obj, 'slaacusev4iface', value='')
+
             # get target interface
             self.target_elt = self._find_matching_interface()
             self._check_overlaps('ipaddrv6', 'subnetv6')
@@ -527,7 +532,8 @@ def _log_fields(self, before=None):
             values += self.format_cli_field(self.obj, 'subnet', fname='ipv4_prefixlen')
             values += self.format_cli_field(self.obj, 'gateway', fname='ipv4_gateway')
             values += self.format_cli_field(self.params, 'ipv6_type', default='none')
-            values += self.format_cli_field(self.obj, 'ipaddrv6', fname='ipv6_address')
+            if self.obj.get('ipaddrv6') != 'slaac':
+                values += self.format_cli_field(self.obj, 'ipaddrv6', fname='ipv6_address')
             values += self.format_cli_field(self.obj, 'subnetv6', fname='ipv6_prefixlen')
             values += self.format_cli_field(self.obj, 'gatewayv6', fname='ipv6_gateway')
             values += self.format_cli_field(self.params, 'mac')
@@ -545,8 +551,15 @@ def _log_fields(self, before=None):
             values += self.format_updated_cli_field(self.obj, before, 'ipaddr', add_comma=(values), fname='ipv4_address')
             values += self.format_updated_cli_field(self.obj, before, 'subnet', add_comma=(values), fname='ipv4_prefixlen')
             values += self.format_updated_cli_field(self.obj, before, 'gateway', add_comma=(values), fname='ipv4_gateway')
-            values += self.format_updated_cli_field(self.obj, before, 'ipv6_type', add_comma=(values), log_none='True')
-            values += self.format_updated_cli_field(self.obj, before, 'ipaddrv6', add_comma=(values), fname='ipv6_address')
+            if self.obj.get('ipaddrv6') == 'slaac' and before.get('ipaddrv6') != 'slaac':
+                res = "ipv6_type=slaac"
+                if values:
+                    values += ", " + res
+                else:
+                    values += res
+            else:
+                values += self.format_updated_cli_field(self.obj, before, 'ipv6_type', add_comma=(values), log_none='True')
+                values += self.format_updated_cli_field(self.obj, before, 'ipaddrv6', add_comma=(values), fname='ipv6_address')
             values += self.format_updated_cli_field(self.obj, before, 'subnetv6', add_comma=(values), fname='ipv6_prefixlen')
             values += self.format_updated_cli_field(self.obj, before, 'gatewayv6', add_comma=(values), fname='ipv6_gateway')
             values += self.format_updated_cli_field(self.obj, before, 'spoofmac', add_comma=(values), fname='mac')
diff --git a/plugins/modules/pfsense_aggregate.py b/plugins/modules/pfsense_aggregate.py
index a7fa77b6..7371ddb9 100644
--- a/plugins/modules/pfsense_aggregate.py
+++ b/plugins/modules/pfsense_aggregate.py
@@ -144,6 +144,11 @@
         description: Blocks traffic from reserved IP addresses (but not RFC 1918) or not yet assigned by IANA.
         required: false
         type: bool
+      slaacusev4iface:
+        description: IPv6 will use the IPv4 connectivity link (PPPoE). Only used when dhcp6_type is slaac.
+        required: false
+        type: bool
+        version_added: 0.6.2
   aggregated_nat_outbounds:
     description: Dict of nat_outbound rules to apply on the target
     required: False
diff --git a/plugins/modules/pfsense_interface.py b/plugins/modules/pfsense_interface.py
index 21b8dbb5..3b70e3ae 100644
--- a/plugins/modules/pfsense_interface.py
+++ b/plugins/modules/pfsense_interface.py
@@ -102,6 +102,11 @@
     description: Blocks traffic from reserved IP addresses (but not RFC 1918) or not yet assigned by IANA.
     required: false
     type: bool
+  slaacusev4iface:
+    description: IPv6 will use the IPv4 connectivity link (PPPoE). Only used when dhcp6_type is slaac.
+    required: false
+    type: bool
+    version_added: 0.6.2
 """
 
 EXAMPLES = """
diff --git a/tests/unit/plugins/modules/test_pfsense_interface.py b/tests/unit/plugins/modules/test_pfsense_interface.py
index a922ca17..f2ed9264 100644
--- a/tests/unit/plugins/modules/test_pfsense_interface.py
+++ b/tests/unit/plugins/modules/test_pfsense_interface.py
@@ -96,10 +96,14 @@ def check_target_elt(self, obj, target_elt):
                 self.assert_xml_elt_equal(target_elt, 'gateway', obj['ipv4_gateway'])
 
         # ipv6 type related
-        if obj.get('ipv6_type') is None or obj.get('ipv6_type') in ['none', 'slaac']:
+        if obj.get('ipv6_type') is None or obj.get('ipv6_type') in ['none']:
             self.assert_not_find_xml_elt(target_elt, 'ipaddrv6')
             self.assert_not_find_xml_elt(target_elt, 'subnetv6')
             self.assert_not_find_xml_elt(target_elt, 'gatewayv6')
+        elif obj.get('ipv6_type') == 'slaac':
+            self.assert_xml_elt_equal(target_elt, 'ipaddrv6', 'slaac')
+            self.assert_not_find_xml_elt(target_elt, 'subnetv6')
+            self.assert_not_find_xml_elt(target_elt, 'gatewayv6')
         elif obj.get('ipv6_type') == 'static':
             if obj.get('ipv6_address'):
                 self.assert_xml_elt_equal(target_elt, 'ipaddrv6', obj['ipv6_address'])