diff --git a/server/src/com/cloud/network/NetworkManagerImpl.java b/server/src/com/cloud/network/NetworkManagerImpl.java
index 7a6ac276c50..f5868658751 100755
--- a/server/src/com/cloud/network/NetworkManagerImpl.java
+++ b/server/src/com/cloud/network/NetworkManagerImpl.java
@@ -98,6 +98,7 @@ import com.cloud.network.dao.PhysicalNetworkVO;
 import com.cloud.network.dao.UserIpv6AddressDao;
 import com.cloud.network.element.DhcpServiceProvider;
 import com.cloud.network.element.IpDeployer;
+import com.cloud.network.element.IpDeployingRequester;
 import com.cloud.network.element.LoadBalancingServiceProvider;
 import com.cloud.network.element.NetworkElement;
 import com.cloud.network.element.StaticNatServiceProvider;
@@ -536,9 +537,11 @@ public class NetworkManagerImpl extends ManagerBase implements NetworkManager, L
                 }
                 IpDeployer deployer = null;
                 NetworkElement element = _networkModel.getElementImplementingProvider(provider.getName());
-                if (element instanceof IpDeployer) {
-                    deployer = (IpDeployer) element;
-                } else {
+                if (!(element instanceof IpDeployingRequester)) {
+                    throw new CloudRuntimeException("Element " + element + " is not a IpDeployingRequester!");
+                }
+                deployer = ((IpDeployingRequester)element).getIpDeployer(network);
+                if (deployer == null) {
                     throw new CloudRuntimeException("Fail to get ip deployer for element: " + element);
                 }
                 Set<Service> services = new HashSet<Service>();
diff --git a/server/src/com/cloud/network/NetworkModelImpl.java b/server/src/com/cloud/network/NetworkModelImpl.java
index ce48e84eb78..ca7a900e39c 100644
--- a/server/src/com/cloud/network/NetworkModelImpl.java
+++ b/server/src/com/cloud/network/NetworkModelImpl.java
@@ -75,6 +75,8 @@ import com.cloud.network.dao.PhysicalNetworkTrafficTypeDao;
 import com.cloud.network.dao.PhysicalNetworkTrafficTypeVO;
 import com.cloud.network.dao.PhysicalNetworkVO;
 import com.cloud.network.dao.UserIpv6AddressDao;
+import com.cloud.network.element.IpDeployer;
+import com.cloud.network.element.IpDeployingRequester;
 import com.cloud.network.element.NetworkElement;
 import com.cloud.network.element.UserDataServiceProvider;
 import com.cloud.network.rules.FirewallRule.Purpose;
@@ -390,9 +392,18 @@ public class NetworkModelImpl extends ManagerBase implements NetworkModel {
             throw new InvalidParameterException("There is no new provider for IP " + publicIp.getAddress() + " of service " + service.getName() + "!");
         }
         Provider newProvider = (Provider) newProviders.toArray()[0];
-        if (!oldProvider.equals(newProvider)) {
-            throw new InvalidParameterException("There would be multiple providers for IP " + publicIp.getAddress() + "!");
-        }
+        Network network = _networksDao.findById(networkId);
+        NetworkElement oldElement = getElementImplementingProvider(oldProvider.getName());
+        NetworkElement newElement = getElementImplementingProvider(newProvider.getName());
+        if (oldElement instanceof IpDeployingRequester && newElement instanceof IpDeployingRequester) {
+        	IpDeployer oldIpDeployer = ((IpDeployingRequester)oldElement).getIpDeployer(network);
+        	IpDeployer newIpDeployer = ((IpDeployingRequester)newElement).getIpDeployer(network);
+        	if (!oldIpDeployer.getProvider().getName().equals(newIpDeployer.getProvider().getName())) {
+        		throw new InvalidParameterException("There would be multiple providers for IP " + publicIp.getAddress() + "!");
+        	}
+        } else {
+        	throw new InvalidParameterException("Ip cannot be applied for new provider!");
+         }
         return true;
     }
     
diff --git a/server/src/com/cloud/network/NetworkServiceImpl.java b/server/src/com/cloud/network/NetworkServiceImpl.java
index 050a1feb412..70f0fa818bd 100755
--- a/server/src/com/cloud/network/NetworkServiceImpl.java
+++ b/server/src/com/cloud/network/NetworkServiceImpl.java
@@ -333,6 +333,18 @@ public class NetworkServiceImpl extends ManagerBase implements  NetworkService {
     private boolean canIpsUseOffering(List<PublicIp> publicIps, long offeringId) {
         Map<PublicIp, Set<Service>> ipToServices = getIpToServices(publicIps, false, true);
         Map<Service, Set<Provider>> serviceToProviders = _networkModel.getNetworkOfferingServiceProvidersMap(offeringId);
+        NetworkOfferingVO offering = _networkOfferingDao.findById(offeringId);
+        //For inline mode checking, using firewall provider for LB instead, because public ip would apply on firewall provider
+        if (offering.isInline()) {
+            Provider firewallProvider = null;
+            if (serviceToProviders.containsKey(Service.Firewall)) {
+                firewallProvider = (Provider)serviceToProviders.get(Service.Firewall).toArray()[0];
+            }
+            Set<Provider> p = new HashSet<Provider>();
+            p.add(firewallProvider);
+            serviceToProviders.remove(Service.Lb);
+            serviceToProviders.put(Service.Lb, p);
+        }
         for (PublicIp ip : ipToServices.keySet()) {
             Set<Service> services = ipToServices.get(ip);
             Provider provider = null;