#!/bin/sh

. /lib/functions.sh

_set_ttl() {
	device=$(uci -q get network.$1.name)
	ttl=$(uci -q get network.$1.ttl)
	if [ -n "$ttl" ]; then
		if [ -e /usr/sbin/iptables-nft ] && [ -z "$(nft list ruleset 2>/dev/null | grep ttl | grep $device)" ]; then
			nft add rule inet fw4 mangle_forward oifname $device ip ttl set $ttl >/dev/null 2>&1
		elif [ ! -e /usr/sbin/iptables-nft ] && [ -z "$(iptables-save 2>/dev/null | grep TTL | grep $device)" ]; then
			iptables -w -t mangle -I POSTROUTING -o $device -j TTL --ttl-set $ttl >/dev/null 2>&1
		fi
	fi
}

config_load network
config_foreach _set_ttl device