Retry return status 4 from iptables

git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@7765 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb

Shorewall-perl/prog.functions

@@ -103,7 +103,12 @@ startup_error() # $* = Error Message
 #
 run_iptables()
 {
-    if ! $IPTABLES $@; then
+    while [ 1 ]; do
+	$IPTABLES $@
+	[ $? -ne 4 ] && break
+    done
+
+    if [ $? -ne 0 ]; then
         error_message "ERROR: Command \"$IPTABLES $@\" Failed"
 	stop_firewall
         exit 2