diff --git a/api/src/com/cloud/network/NetworkModel.java b/api/src/com/cloud/network/NetworkModel.java
index efc22b4edcb..28d71b16365 100644
--- a/api/src/com/cloud/network/NetworkModel.java
+++ b/api/src/com/cloud/network/NetworkModel.java
@@ -255,4 +255,6 @@ public interface NetworkModel {
 	void checkIp6Parameters(String startIPv6, String endIPv6, String ip6Gateway, String ip6Cidr) throws InvalidParameterValueException;
 
 	void checkRequestedIpAddresses(long networkId, String ip4, String ip6) throws InvalidParameterValueException;
-}
\ No newline at end of file
+
+	String getStartIpv6Address(long id);
+}
diff --git a/server/src/com/cloud/network/NetworkModelImpl.java b/server/src/com/cloud/network/NetworkModelImpl.java
index f34f9067951..403b3164522 100644
--- a/server/src/com/cloud/network/NetworkModelImpl.java
+++ b/server/src/com/cloud/network/NetworkModelImpl.java
@@ -1940,4 +1940,20 @@ public class NetworkModelImpl  implements NetworkModel, Manager{
     	}
 	}
 
-}
\ No newline at end of file
+	@Override
+	public String getStartIpv6Address(long networkId) {
+    	List<VlanVO> vlans = _vlanDao.listVlansByNetworkId(networkId);
+    	if (vlans == null) {
+    		return null;
+    	}
+    	String startIpv6 = null;
+    	// Get the start ip of first create vlan(not the lowest, because if you add a lower vlan, lowest vlan would change)
+    	for (Vlan vlan : vlans) {
+    		if (vlan.getIp6Range() != null) {
+    			startIpv6 = vlan.getIp6Range().split("-")[0];
+    			break;
+    		}
+    	}
+		return startIpv6;
+	}
+}
diff --git a/server/src/com/cloud/network/router/VirtualNetworkApplianceManagerImpl.java b/server/src/com/cloud/network/router/VirtualNetworkApplianceManagerImpl.java
index fb2e2bc8a61..c9ffc35c5e6 100755
--- a/server/src/com/cloud/network/router/VirtualNetworkApplianceManagerImpl.java
+++ b/server/src/com/cloud/network/router/VirtualNetworkApplianceManagerImpl.java
@@ -155,6 +155,7 @@ import com.cloud.network.dao.RemoteAccessVpnDao;
 import com.cloud.network.dao.Site2SiteCustomerGatewayDao;
 import com.cloud.network.dao.Site2SiteVpnConnectionDao;
 import com.cloud.network.dao.Site2SiteVpnGatewayDao;
+import com.cloud.network.dao.UserIpv6AddressDao;
 import com.cloud.network.dao.VirtualRouterProviderDao;
 import com.cloud.network.dao.VpnUserDao;
 import com.cloud.network.lb.LoadBalancingRule;
@@ -329,6 +330,8 @@ public class VirtualNetworkApplianceManagerImpl implements VirtualNetworkApplian
     Site2SiteVpnConnectionDao _s2sVpnConnectionDao;
     @Inject
     Site2SiteVpnManager _s2sVpnMgr;
+    @Inject
+    UserIpv6AddressDao _ipv6Dao;
     
     int _routerRamSize;
     int _routerCpuMHz;
@@ -1596,18 +1599,30 @@ public class VirtualNetworkApplianceManagerImpl implements VirtualNetworkApplian
         boolean hasGuestNetwork = false;
         if (guestNetwork != null) {
             s_logger.debug("Adding nic for Virtual Router in Guest network " + guestNetwork);
-            String defaultNetworkStartIp = null;
-            if (guestNetwork.getCidr() != null && !setupPublicNetwork) {
-                String startIp = _networkModel.getStartIpAddress(guestNetwork.getId());
-                if (startIp != null && _ipAddressDao.findByIpAndSourceNetworkId(guestNetwork.getId(), startIp).getAllocatedTime() == null) {
-                    defaultNetworkStartIp = startIp;
-                } else if (s_logger.isDebugEnabled()){
-                    s_logger.debug("First ip " + startIp + " in network id=" + guestNetwork.getId() + 
-                            " is already allocated, can't use it for domain router; will get random ip address from the range");
-                }
+            String defaultNetworkStartIp = null, defaultNetworkStartIpv6 = null;
+            if (!setupPublicNetwork) {
+            	if (guestNetwork.getCidr() != null) {
+            		String startIp = _networkModel.getStartIpAddress(guestNetwork.getId());
+            		if (startIp != null && _ipAddressDao.findByIpAndSourceNetworkId(guestNetwork.getId(), startIp).getAllocatedTime() == null) {
+            			defaultNetworkStartIp = startIp;
+            		} else if (s_logger.isDebugEnabled()){
+            			s_logger.debug("First ip " + startIp + " in network id=" + guestNetwork.getId() + 
+            					" is already allocated, can't use it for domain router; will get random ip address from the range");
+            		}
+            	}
+            	
+            	if (guestNetwork.getIp6Cidr() != null) {
+            		String startIpv6 = _networkModel.getStartIpv6Address(guestNetwork.getId());
+            		if (startIpv6 != null && _ipv6Dao.findByNetworkIdAndIp(guestNetwork.getId(), startIpv6) == null) {
+            			defaultNetworkStartIpv6 = startIpv6;
+            		} else if (s_logger.isDebugEnabled()){
+            			s_logger.debug("First ipv6 " + startIpv6 + " in network id=" + guestNetwork.getId() + 
+            					" is already allocated, can't use it for domain router; will get random ipv6 address from the range");
+            		}
+            	}
             }
 
-            NicProfile gatewayNic = new NicProfile(defaultNetworkStartIp, null);
+            NicProfile gatewayNic = new NicProfile(defaultNetworkStartIp, defaultNetworkStartIpv6);
             if (setupPublicNetwork) {
                 if (isRedundant) {
                     gatewayNic.setIp4Address(_networkMgr.acquireGuestIpAddress(guestNetwork, null));
diff --git a/server/test/com/cloud/network/MockNetworkModelImpl.java b/server/test/com/cloud/network/MockNetworkModelImpl.java
index cc83b6574bf..05929e34006 100644
--- a/server/test/com/cloud/network/MockNetworkModelImpl.java
+++ b/server/test/com/cloud/network/MockNetworkModelImpl.java
@@ -823,4 +823,10 @@ public class MockNetworkModelImpl implements NetworkModel, Manager {
 			throws InvalidParameterValueException {
 		// TODO Auto-generated method stub
 	}
+
+	@Override
+	public String getStartIpv6Address(long id) {
+		// TODO Auto-generated method stub
+		return null;
+	}
 }