diff --git a/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/web/SubnetCodec.java b/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/web/SubnetCodec.java
index 8f0fd2e..afd561f 100644
--- a/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/web/SubnetCodec.java
+++ b/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/web/SubnetCodec.java
@@ -32,15 +32,19 @@
         checkNotNull(subnet, "Subnet cannot be null");
         ObjectNode result = context.mapper().createObjectNode()
                 .put("id", subnet.id().toString())
-                .put("gate_ip", subnet.gatewayIp().toString())
+                .put("gateway_ip", subnet.gatewayIp().toString())
                 .put("network_id", subnet.networkId().toString())
                 .put("name", subnet.subnetName().toString())
                 .put("ip_version", subnet.ipVersion().toString())
                 .put("cidr", subnet.cidr().toString())
                 .put("shared", subnet.shared())
                 .put("enabled_dchp", subnet.dhcpEnabled())
-                .put("tenant_id", subnet.tenantId().toString());
-        result.set("alloction_pools", new AllocationPoolsCodec().encode(subnet
+                .put("tenant_id", subnet.tenantId().toString())
+                .put("ipv6_address_mode", subnet.ipV6AddressMode() == null ? null
+                          : subnet.ipV6AddressMode().toString())
+                .put("ipv6_ra_mode", subnet.ipV6RaMode() == null ? null
+                          : subnet.ipV6RaMode().toString());
+        result.set("allocation_pools", new AllocationPoolsCodec().encode(subnet
                 .allocationPools(), context));
         result.set("host_routes",
                    new HostRoutesCodec().encode(subnet.hostRoutes(), context));
diff --git a/apps/vtnweb/src/main/java/org/onosproject/vtnweb/resources/SubnetWebResource.java b/apps/vtnweb/src/main/java/org/onosproject/vtnweb/resources/SubnetWebResource.java
index 1d4a5f4..7494f02 100644
--- a/apps/vtnweb/src/main/java/org/onosproject/vtnweb/resources/SubnetWebResource.java
+++ b/apps/vtnweb/src/main/java/org/onosproject/vtnweb/resources/SubnetWebResource.java
@@ -226,8 +226,8 @@
      */
     public Iterable<Subnet> changeJsonToSub(JsonNode subnetNodes) {
         checkNotNull(subnetNodes, JSON_NOT_NULL);
-        checkArgument(!subnetNodes.get("enable_dhcp").isBoolean(), "enable_dhcp should be boolean");
-        checkArgument(!subnetNodes.get("shared").isBoolean(), "shared should be boolean");
+        checkArgument(subnetNodes.get("enable_dhcp").isBoolean(), "enable_dhcp should be boolean");
+        checkArgument(subnetNodes.get("shared").isBoolean(), "shared should be boolean");
         Map<SubnetId, Subnet> subMap = new HashMap<SubnetId, Subnet>();
         if (!subnetNodes.hasNonNull("id")) {
             return null;
diff --git a/apps/vtnweb/src/main/java/org/onosproject/vtnweb/resources/TenantNetworkWebResource.java b/apps/vtnweb/src/main/java/org/onosproject/vtnweb/resources/TenantNetworkWebResource.java
index 65e9589..7a0d43d 100644
--- a/apps/vtnweb/src/main/java/org/onosproject/vtnweb/resources/TenantNetworkWebResource.java
+++ b/apps/vtnweb/src/main/java/org/onosproject/vtnweb/resources/TenantNetworkWebResource.java
@@ -269,9 +269,9 @@
         ConcurrentMap<TenantNetworkId, TenantNetwork> networksMap = Maps
                 .newConcurrentMap();
         if (node != null) {
-            checkArgument(!node.get("admin_state_up").isBoolean(), "admin_state_up should be boolean");
-            checkArgument(!node.get("shared").isBoolean(), "shared should be boolean");
-            checkArgument(!node.get("router:external").isBoolean(), "router:external should be boolean");
+            checkArgument(node.get("admin_state_up").isBoolean(), "admin_state_up should be boolean");
+            checkArgument(node.get("shared").isBoolean(), "shared should be boolean");
+            checkArgument(node.get("router:external").isBoolean(), "router:external should be boolean");
             String name = node.get("name").asText();
             boolean adminStateUp = node.get("admin_state_up").asBoolean();
             String state = node.get("status").asText();
diff --git a/apps/vtnweb/src/main/java/org/onosproject/vtnweb/resources/VirtualPortWebResource.java b/apps/vtnweb/src/main/java/org/onosproject/vtnweb/resources/VirtualPortWebResource.java
index 64266a5..28f0c42 100644
--- a/apps/vtnweb/src/main/java/org/onosproject/vtnweb/resources/VirtualPortWebResource.java
+++ b/apps/vtnweb/src/main/java/org/onosproject/vtnweb/resources/VirtualPortWebResource.java
@@ -15,6 +15,7 @@
  */
 package org.onosproject.vtnweb.resources;
 
+import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Preconditions.checkNotNull;
 import static javax.ws.rs.core.Response.Status.INTERNAL_SERVER_ERROR;
 import static javax.ws.rs.core.Response.Status.OK;
@@ -209,6 +210,7 @@
                     .asText());
             TenantNetworkId networkId = TenantNetworkId.networkId(vPortnode
                     .get("network_id").asText());
+            checkArgument(vPortnode.get("admin_state_up").isBoolean(), "admin_state_up should be boolean");
             Boolean adminStateUp = vPortnode.get("admin_state_up").asBoolean();
             String state = vPortnode.get("status").asText();
             MacAddress macAddress = MacAddress.valueOf(vPortnode