diff --git a/server/src/com/cloud/network/NetworkManagerImpl.java b/server/src/com/cloud/network/NetworkManagerImpl.java
index 6fdbf94bf33..2d65531f7d7 100644
--- a/server/src/com/cloud/network/NetworkManagerImpl.java
+++ b/server/src/com/cloud/network/NetworkManagerImpl.java
@@ -1754,6 +1754,11 @@ public class NetworkManagerImpl implements NetworkManager, NetworkService, Manag
             s_logger.debug("Changing active number of nics for network id=" + networkId + " on " + count);
             _networksDao.changeActiveNicsBy(networkId, count);
         }
+
+        if (nic.getVmType() == VirtualMachine.Type.User || (nic.getVmType() == VirtualMachine.Type.DomainRouter && getNetwork(networkId).getTrafficType() == TrafficType.Guest)) {
+            _networksDao.setCheckForGc(networkId);
+        }
+        
         txn.commit();
     }
 
diff --git a/server/src/com/cloud/network/dao/NetworkDao.java b/server/src/com/cloud/network/dao/NetworkDao.java
index 28e0f103ace..9990d350a83 100644
--- a/server/src/com/cloud/network/dao/NetworkDao.java
+++ b/server/src/com/cloud/network/dao/NetworkDao.java
@@ -92,4 +92,6 @@ public interface NetworkDao extends GenericDao<NetworkVO, Long> {
 
     List<NetworkVO> listByZoneAndTrafficType(long zoneId, TrafficType trafficType);
 
+    void setCheckForGc(long networkId);
+
 }
diff --git a/server/src/com/cloud/network/dao/NetworkDaoImpl.java b/server/src/com/cloud/network/dao/NetworkDaoImpl.java
index 00f12634abb..fac6128d7c8 100644
--- a/server/src/com/cloud/network/dao/NetworkDaoImpl.java
+++ b/server/src/com/cloud/network/dao/NetworkDaoImpl.java
@@ -311,6 +311,11 @@ public class NetworkDaoImpl extends GenericDaoBase<NetworkVO, Long> implements N
     public void clearCheckForGc(long networkId) {
         _opDao.clearCheckForGc(networkId);
     }
+    
+    @Override
+    public void setCheckForGc(long networkId) {
+        _opDao.setCheckForGc(networkId);
+    }
 
     @Override
     public List<NetworkVO> listByOwner(long ownerId) {
diff --git a/server/src/com/cloud/network/dao/NetworkOpDaoImpl.java b/server/src/com/cloud/network/dao/NetworkOpDaoImpl.java
index b6626c64942..f238fca0317 100644
--- a/server/src/com/cloud/network/dao/NetworkOpDaoImpl.java
+++ b/server/src/com/cloud/network/dao/NetworkOpDaoImpl.java
@@ -75,17 +75,23 @@ public class NetworkOpDaoImpl extends GenericDaoBase<NetworkOpVO, Long> implemen
     }
     
     public void changeActiveNicsBy(long networkId, int count) {
+        
         SearchCriteria<NetworkOpVO> sc = AllFieldsSearch.create();
         sc.setParameters("network", networkId);
-        
+
         NetworkOpVO vo = createForUpdate();
-        vo.setCheckForGc(true);
         UpdateBuilder builder = getUpdateBuilder(vo);
         builder.incr(_activeNicsAttribute, count);
         
         update(builder, sc, null);
     }
     
+    public void setCheckForGc(long networkId) {
+        NetworkOpVO vo = createForUpdate();
+        vo.setCheckForGc(true);
+        update(networkId, vo);
+    }
+    
     public void clearCheckForGc(long networkId) {
         NetworkOpVO vo = createForUpdate();
         vo.setCheckForGc(false);