diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/RouterGateway.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/RouterGateway.java
index 9a75556..da14fae 100644
--- a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/RouterGateway.java
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/RouterGateway.java
@@ -1,108 +1,108 @@
-/*
- * Copyright 2015 Open Networking Laboratory
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.onosproject.vtnrsc;
-
-import static com.google.common.base.MoreObjects.toStringHelper;
-import static com.google.common.base.Preconditions.checkNotNull;
-
-import java.util.Collection;
-import java.util.Objects;
-
-/**
- * Representation of a Router gateway.
- */
-public final class RouterGateway {
-
-    private final TenantNetworkId networkId;
-    private final boolean enableSnat;
-    private final Collection<FixedIp> externalFixedIps;
-
-    // Public construction is prohibited
-    private RouterGateway(TenantNetworkId networkId, boolean enableSnat,
-                         Collection<FixedIp> externalFixedIps) {
-        this.networkId = checkNotNull(networkId, "networkId cannot be null");
-        this.enableSnat = checkNotNull(enableSnat, "enableSnat cannot be null");
-        this.externalFixedIps = checkNotNull(externalFixedIps, "externalFixedIps cannot be null");
-    }
-
-    /**
-     * Creates router gateway object.
-     *
-     * @param networkId network identifier
-     * @param enableSnat SNAT enable or not
-     * @param externalFixedIps external fixed IP
-     * @return RouterGateway
-     */
-    public static RouterGateway routerGateway(TenantNetworkId networkId, boolean enableSnat,
-                                              Collection<FixedIp> externalFixedIps) {
-        return new RouterGateway(networkId, enableSnat, externalFixedIps);
-    }
-
-    /**
-     * Returns network identifier.
-     *
-     * @return networkId
-     */
-    public TenantNetworkId networkId() {
-        return networkId;
-    }
-
-    /**
-     * Return SNAT enable or not.
-     *
-     * @return enableSnat
-     */
-    public boolean enableSnat() {
-        return enableSnat;
-    }
-
-    /**
-     * Return external fixed Ip.
-     *
-     * @return externalFixedIps
-     */
-    public Collection<FixedIp> externalFixedIps() {
-        return externalFixedIps;
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(networkId, enableSnat, externalFixedIps);
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj) {
-            return true;
-        }
-        if (obj instanceof RouterGateway) {
-            final RouterGateway that = (RouterGateway) obj;
-            return Objects.equals(this.networkId, that.networkId)
-                    && Objects.equals(this.enableSnat, that.enableSnat)
-                    && Objects.equals(this.externalFixedIps, that.externalFixedIps);
-        }
-        return false;
-    }
-
-    @Override
-    public String toString() {
-        return toStringHelper(this)
-                .add("networkId", networkId)
-                .add("enableSnat", enableSnat)
-                .add("externalFixedIps", externalFixedIps)
-                .toString();
-    }
-}
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.vtnrsc;
+
+import static com.google.common.base.MoreObjects.toStringHelper;
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import java.util.Collection;
+import java.util.Objects;
+
+/**
+ * Representation of a Router gateway.
+ */
+public final class RouterGateway {
+
+    private final TenantNetworkId networkId;
+    private final boolean enableSnat;
+    private final Collection<FixedIp> externalFixedIps;
+
+    // Public construction is prohibited
+    private RouterGateway(TenantNetworkId networkId, boolean enableSnat,
+                         Collection<FixedIp> externalFixedIps) {
+        this.networkId = checkNotNull(networkId, "networkId cannot be null");
+        this.enableSnat = checkNotNull(enableSnat, "enableSnat cannot be null");
+        this.externalFixedIps = checkNotNull(externalFixedIps, "externalFixedIps cannot be null");
+    }
+
+    /**
+     * Creates router gateway object.
+     *
+     * @param networkId network identifier
+     * @param enableSnat SNAT enable or not
+     * @param externalFixedIps external fixed IP
+     * @return RouterGateway
+     */
+    public static RouterGateway routerGateway(TenantNetworkId networkId, boolean enableSnat,
+                                              Collection<FixedIp> externalFixedIps) {
+        return new RouterGateway(networkId, enableSnat, externalFixedIps);
+    }
+
+    /**
+     * Returns network identifier.
+     *
+     * @return networkId
+     */
+    public TenantNetworkId networkId() {
+        return networkId;
+    }
+
+    /**
+     * Return SNAT enable or not.
+     *
+     * @return enableSnat
+     */
+    public boolean enableSnat() {
+        return enableSnat;
+    }
+
+    /**
+     * Return external fixed Ip.
+     *
+     * @return externalFixedIps
+     */
+    public Collection<FixedIp> externalFixedIps() {
+        return externalFixedIps;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(networkId, enableSnat, externalFixedIps);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof RouterGateway) {
+            final RouterGateway that = (RouterGateway) obj;
+            return Objects.equals(this.networkId, that.networkId)
+                    && Objects.equals(this.enableSnat, that.enableSnat)
+                    && Objects.equals(this.externalFixedIps, that.externalFixedIps);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return toStringHelper(this)
+                .add("networkId", networkId)
+                .add("enableSnat", enableSnat)
+                .add("externalFixedIps", externalFixedIps)
+                .toString();
+    }
+}