diff --git a/de/heat-templates/scripts/functions.sh b/de/heat-templates/scripts/functions.sh
index d923071..18e4eaf 100644
--- a/de/heat-templates/scripts/functions.sh
+++ b/de/heat-templates/scripts/functions.sh
@@ -632,12 +632,10 @@
     cat << EOF > /etc/sysctl.d/99-disable-rp-filter.conf
 net.ipv4.conf.all.rp_filter=0
 net.ipv4.conf.default.rp_filter=0
+net.ipv4.conf.*.rp_filter=0
 EOF
-    for iface in $(find  /proc/sys/net/ipv4/conf/ -name "enp*" -o -name "ens*" -o -name "eth*"); do
-        echo 0 > $iface/rp_filter
-    done
-
-    sysctl -p /etc/sysctl.d/99-disable-rp-filter.conf
+    # to apply to existing interfaces need to restart service
+    systemctl restart systemd-sysctl.service
 }
 
 function configure_sysctl_limits {