add -w parameter to iptables for locking

fixes #232

miniupnpd/netfilter/iptables_init.sh

@@ -1,6 +1,7 @@
 #! /bin/sh
 # $Id: iptables_init.sh,v 1.5 2011/05/16 12:11:37 nanard Exp $
 IPTABLES="`which iptables`" || exit 1
+IPTABLES="$IPTABLES -w"
 IP="`which ip`" || exit 1
 
 #change this parameters :

miniupnpd/netfilter/iptables_init_and_clean.sh

@@ -4,6 +4,7 @@
 # Checks for state of filter before doing anything..
 
 IPTABLES="`which iptables`" || exit 1
+IPTABLES="$IPTABLES -w"
 IP="`which ip`" || exit 1
 
 #EXTIF=eth0

miniupnpd/netfilter/iptables_removeall.sh

@@ -1,6 +1,7 @@
 #! /bin/sh
 # $Id: iptables_removeall.sh,v 1.5 2011/05/16 12:11:37 nanard Exp $
 IPTABLES="`which iptables`" || exit 1
+IPTABLES="$IPTABLES -w"
 IP="`which ip`" || exit 1
 
 #change this parameters :