diff --git a/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/api/OpenstackNetworkService.java b/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/api/OpenstackNetworkService.java
index a297b83..2974c47 100644
--- a/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/api/OpenstackNetworkService.java
+++ b/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/api/OpenstackNetworkService.java
@@ -117,6 +117,13 @@
     void deleteExternalPeerRouter(ExternalGateway externalGateway);
 
     /**
+     * Deletes external router with supplied ip address.
+     *
+     * @param ipAddress ip address
+     */
+    void deleteExternalPeerRouter(String ipAddress);
+
+    /**
      * Updates external router mac address with supplied ip address.
      *
      * @param ipAddress ip address