diff --git a/server/src/main/java/com/cloud/configuration/ConfigurationManagerImpl.java b/server/src/main/java/com/cloud/configuration/ConfigurationManagerImpl.java
index 30f2f7cd1e2..ae04fc3cb3c 100755
--- a/server/src/main/java/com/cloud/configuration/ConfigurationManagerImpl.java
+++ b/server/src/main/java/com/cloud/configuration/ConfigurationManagerImpl.java
@@ -3652,9 +3652,9 @@ public class ConfigurationManagerImpl extends ManagerBase implements Configurati
         }
 
         boolean isDomainSpecific = false;
-        List<DomainVlanMapVO> domainVln = _domainVlanMapDao.listDomainVlanMapsByVlan(vlanRange.getId());
+        List<DomainVlanMapVO> domainVlan = _domainVlanMapDao.listDomainVlanMapsByVlan(vlanRange.getId());
         // Check for domain wide pool. It will have an entry for domain_vlan_map.
-        if (domainVln != null && !domainVln.isEmpty()) {
+        if (domainVlan != null && !domainVlan.isEmpty()) {
             isDomainSpecific = true;
         }
 
@@ -3811,10 +3811,10 @@ public class ConfigurationManagerImpl extends ManagerBase implements Configurati
             forSystemVms = ip.isForSystemVms();
             final Long allocatedToAccountId = ip.getAllocatedToAccountId();
             if (allocatedToAccountId != null) {
-                final Account accountAllocatedTo = _accountMgr.getActiveAccountById(allocatedToAccountId);
-                if (!accountAllocatedTo.getAccountName().equalsIgnoreCase(accountName)) {
+                if (vlanOwner != null && allocatedToAccountId != vlanOwner.getId()) {
                     throw new InvalidParameterValueException(ip.getAddress() + " Public IP address in range is allocated to another account ");
                 }
+                final Account accountAllocatedTo = _accountMgr.getActiveAccountById(allocatedToAccountId);
                 if (vlanOwner == null && domain != null && domain.getId() != accountAllocatedTo.getDomainId()){
                     throw new InvalidParameterValueException(ip.getAddress()
                             + " Public IP address in range is allocated to another domain/account ");
@@ -3875,9 +3875,9 @@ public class ConfigurationManagerImpl extends ManagerBase implements Configurati
         }
 
         boolean isDomainSpecific = false;
-        final List<DomainVlanMapVO> domainVln = _domainVlanMapDao.listDomainVlanMapsByVlan(vlanDbId);
+        final List<DomainVlanMapVO> domainVlan = _domainVlanMapDao.listDomainVlanMapsByVlan(vlanDbId);
         // Check for domain wide pool. It will have an entry for domain_vlan_map.
-        if (domainVln != null && !domainVln.isEmpty()) {
+        if (domainVlan != null && !domainVlan.isEmpty()) {
             isDomainSpecific = true;
         }
 
@@ -3930,7 +3930,7 @@ public class ConfigurationManagerImpl extends ManagerBase implements Configurati
             // decrement resource count for dedicated public ip's
             _resourceLimitMgr.decrementResourceCount(acctVln.get(0).getAccountId(), ResourceType.public_ip, new Long(ips.size()));
             return true;
-        } else if (isDomainSpecific && _domainVlanMapDao.remove(domainVln.get(0).getId())) {
+        } else if (isDomainSpecific && _domainVlanMapDao.remove(domainVlan.get(0).getId())) {
             s_logger.debug("Remove the vlan from domain_vlan_map successfully.");
             return true;
         } else {
diff --git a/server/src/main/java/com/cloud/vm/UserVmManagerImpl.java b/server/src/main/java/com/cloud/vm/UserVmManagerImpl.java
index 68b45e1af7c..9762dc3a263 100644
--- a/server/src/main/java/com/cloud/vm/UserVmManagerImpl.java
+++ b/server/src/main/java/com/cloud/vm/UserVmManagerImpl.java
@@ -1451,6 +1451,19 @@ public class UserVmManagerImpl extends ManagerBase implements UserVmManager, Vir
                     newNetworkOfferingId, null, 0L, VirtualMachine.class.getName(), vmInstance.getUuid(), vmInstance.isDisplay());
             UsageEventUtils.publishUsageEvent(EventTypes.EVENT_NETWORK_OFFERING_ASSIGN, vmInstance.getAccountId(), vmInstance.getDataCenterId(), vmInstance.getId(),
                     oldNicIdString, oldNetworkOfferingId, null, 0L, VirtualMachine.class.getName(), vmInstance.getUuid(), vmInstance.isDisplay());
+
+            if (vmInstance.getState() != State.Stopped) {
+                try {
+                    VirtualMachineProfile vmProfile = new VirtualMachineProfileImpl(vmInstance);
+                    User callerUser = _accountMgr.getActiveUser(CallContext.current().getCallingUserId());
+                    ReservationContext context = new ReservationContextImpl(null, null, callerUser, caller);
+                    DeployDestination dest = new DeployDestination(dc, null, null, null);
+                    _networkMgr.prepare(vmProfile, dest, context);
+                } catch (final Exception e) {
+                    s_logger.info("Got exception: ", e);
+                }
+            }
+
             return _vmDao.findById(vmInstance.getId());
         }
 
diff --git a/vmware-base/src/main/java/com/cloud/hypervisor/vmware/mo/VirtualMachineMO.java b/vmware-base/src/main/java/com/cloud/hypervisor/vmware/mo/VirtualMachineMO.java
index 52ead5c8535..d9d03d1484a 100644
--- a/vmware-base/src/main/java/com/cloud/hypervisor/vmware/mo/VirtualMachineMO.java
+++ b/vmware-base/src/main/java/com/cloud/hypervisor/vmware/mo/VirtualMachineMO.java
@@ -3298,7 +3298,7 @@ public class VirtualMachineMO extends BaseMO {
         virtualHardwareVersion = getVirtualHardwareVersion();
 
         // Check if guest operating system supports memory hotadd
-        if (guestOsDescriptor.isSupportsMemoryHotAdd()) {
+        if (guestOsDescriptor != null && guestOsDescriptor.isSupportsMemoryHotAdd()) {
             guestOsSupportsMemoryHotAdd = true;
         }
         // Check if virtual machine is using hardware version 7 or later.