diff --git a/patches/systemvm/debian/config/etc/init.d/cloud-early-config b/patches/systemvm/debian/config/etc/init.d/cloud-early-config
index a2bb16527f3..680875213d7 100755
--- a/patches/systemvm/debian/config/etc/init.d/cloud-early-config
+++ b/patches/systemvm/debian/config/etc/init.d/cloud-early-config
@@ -186,10 +186,10 @@ disable_rpfilter() {
 disable_rpfilter_domR() {
   log_it "cloud: disable rp_filter"
   log_it "disable rpfilter"
-  sed -i "s/net.ipv4.conf.default.rp_filter.*$/net.ipv4.conf.default.rp_filter = 0/" /etc/sysctl.conf 
   if [ "$DISABLE_RP_FILTER" == "true" ]
   then
-      log_it "cloud: disable rp_filter : updating proc"
+      log_it "cloud: disable rp_filter on public interfaces"
+#FIXME : currently public interfaces are assumed  as eth2 and eth3.
       sed -i "s/net.ipv4.conf.eth2.rp_filter.*$/net.ipv4.conf.eth2.rp_filter = 0/" /etc/sysctl.conf 
       sed -i "s/net.ipv4.conf.eth3.rp_filter.*$/net.ipv4.conf.eth3.rp_filter = 0/" /etc/sysctl.conf 
       echo "0" > /proc/sys/net/ipv4/conf/eth2/rp_filter
diff --git a/server/src/com/cloud/network/router/VirtualNetworkApplianceManagerImpl.java b/server/src/com/cloud/network/router/VirtualNetworkApplianceManagerImpl.java
index 15dafc1f439..6ddf387cc1b 100755
--- a/server/src/com/cloud/network/router/VirtualNetworkApplianceManagerImpl.java
+++ b/server/src/com/cloud/network/router/VirtualNetworkApplianceManagerImpl.java
@@ -1226,7 +1226,15 @@ public class VirtualNetworkApplianceManagerImpl implements VirtualNetworkApplian
                 dhcpRange = NetUtils.getDhcpRange(cidr);
             }
         }
+        
 
+        String rpValue = _configDao.getValue(Config.NetworkRouterRpFilter.key());
+        if (rpValue != null && rpValue.equalsIgnoreCase("true")) {
+            _disable_rp_filter = true;
+        }else
+        {
+            _disable_rp_filter = false;
+        }
         if (router.getRole() == Role.DHCP_USERDATA) {
             type = "dhcpsrvr";
         } else {