diff --git a/ansible/library/vlan_config.py b/ansible/library/vlan_config.py
index 9fa4586a04e..9e98c015540 100644
--- a/ansible/library/vlan_config.py
+++ b/ansible/library/vlan_config.py
@@ -51,6 +51,7 @@ def main():
             vlan_configs[vlan]['id'] = vlan_param['id']
             vlan_configs[vlan]['tag'] = vlan_param['tag']
             vlan_configs[vlan]['prefix'] = vlan_param['prefix']
+            vlan_configs[vlan]['prefix_v6'] = vlan_param['prefix_v6']
             vlan_configs[vlan]['intfs'] = [port_alias[i] for i in vlan_param['intfs']]
     except Exception as e:
         module.fail_json(msg = traceback.format_exc())