Add 6in4 modified package with gateway support here

root/package/network/ipv6/6in4/Makefile

@@ -0,0 +1,45 @@
+#
+# Copyright (C) 2010-2015 OpenWrt.org
+# Copyright (C) 2018 Ycarus (Yannick Chabanois) <ycarus@zugaina.org>
+# - Added gateway setting
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=6in4
+PKG_VERSION:=270
+PKG_RELEASE:=1
+PKG_LICENSE:=GPL-2.0
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/6in4
+  SECTION:=net
+  CATEGORY:=Network
+  DEPENDS:=@IPV6 +kmod-sit +uclient-fetch
+  TITLE:=IPv6-in-IPv4 configuration support
+  MAINTAINER:=Jo-Philipp Wich <jo@mein.io>
+  PKGARCH:=all
+endef
+
+define Package/6in4/description
+Provides support for 6in4 tunnels in /etc/config/network.
+Refer to http://wiki.openwrt.org/doc/uci/network for
+configuration details.
+endef
+
+define Build/Compile
+endef
+
+define Build/Configure
+endef
+
+define Package/6in4/install
+	$(INSTALL_DIR) $(1)/lib/netifd/proto
+	$(INSTALL_BIN) ./files/6in4.sh $(1)/lib/netifd/proto/6in4.sh
+endef
+
+$(eval $(call BuildPackage,6in4))

root/package/network/ipv6/6in4/files/6in4.sh

@@ -0,0 +1,149 @@
+#!/bin/sh
+# 6in4.sh - IPv6-in-IPv4 tunnel backend
+# Copyright (c) 2010-2015 OpenWrt.org
+
+[ -n "$INCLUDE_ONLY" ] || {
+	. /lib/functions.sh
+	. /lib/functions/network.sh
+	. ../netifd-proto.sh
+	init_proto "$@"
+}
+
+proto_6in4_update() {
+	sh -c '
+		timeout=5
+
+		(while [ $((timeout--)) -gt 0 ]; do
+			sleep 1
+			kill -0 $$ || exit 0
+		done; kill -9 $$) 2>/dev/null &
+
+		exec "$@"
+	' "$1" "$@"
+}
+
+proto_6in4_add_prefix() {
+	append "$3" "$1"
+}
+
+proto_6in4_setup() {
+	local cfg="$1"
+	local iface="$2"
+	local link="6in4-$cfg"
+
+	local mtu ttl tos ipaddr peeraddr ip6addr ip6prefix ip6prefixes tunlink tunnelid username password updatekey gateway
+	json_get_vars mtu ttl tos ipaddr peeraddr ip6addr tunlink tunnelid username password updatekey gateway
+	json_for_each_item proto_6in4_add_prefix ip6prefix ip6prefixes
+
+	[ -z "$peeraddr" ] && {
+		proto_notify_error "$cfg" "MISSING_ADDRESS"
+		proto_block_restart "$cfg"
+		return
+	}
+
+	[ -n "$tunlink" ] && ( proto_add_host_dependency "$cfg" "$peeraddr" "$tunlink" )
+
+	[ -z "$ipaddr" ] && {
+		local wanif="$tunlink"
+		if [ -z "$wanif" ] && ! network_find_wan wanif; then
+			proto_notify_error "$cfg" "NO_WAN_LINK"
+			return
+		fi
+
+		if ! network_get_ipaddr ipaddr "$wanif"; then
+			proto_notify_error "$cfg" "NO_WAN_LINK"
+			return
+		fi
+	}
+
+	proto_init_update "$link" 1
+
+	[ -n "$ip6addr" ] && {
+		local local6="${ip6addr%%/*}"
+		local mask6="${ip6addr##*/}"
+		[[ "$local6" = "$mask6" ]] && mask6=
+		proto_add_ipv6_address "$local6" "$mask6"
+		proto_add_ipv6_route "::" 0 "" "" "" "$local6/$mask6"
+	}
+
+	[ -n "$gateway" ] && {
+		proto_add_ipv6_route "::" 0 "$gateway"
+	}
+
+	for ip6prefix in $ip6prefixes; do
+		proto_add_ipv6_prefix "$ip6prefix"
+		proto_add_ipv6_route "::" 0 "" "" "" "$ip6prefix"
+	done
+
+	proto_add_tunnel
+	json_add_string mode sit
+	json_add_int mtu "${mtu:-1280}"
+	json_add_int ttl "${ttl:-64}"
+	[ -n "$tos" ] && json_add_string tos "$tos"
+	json_add_string local "$ipaddr"
+	json_add_string remote "$peeraddr"
+	[ -n "$tunlink" ] && json_add_string link "$tunlink"
+	proto_close_tunnel
+
+	proto_send_update "$cfg"
+
+	[ -n "$tunnelid" -a -n "$username" -a \( -n "$password" -o -n "$updatekey" \) ] && {
+		[ -n "$updatekey" ] && password="$updatekey"
+
+		local http="http"
+		local urlget="uclient-fetch"
+		local urlget_opts="-qO-"
+		local ca_path="${SSL_CERT_DIR:-/etc/ssl/certs}"
+
+		[ -f /lib/libustream-ssl.so ] && http=https
+		[ "$http" = "https" -a -z "$(find $ca_path -name "*.0" 2>/dev/null)" ] && {
+			urlget_opts="$urlget_opts --no-check-certificate"
+		}
+
+		local url="$http://ipv4.tunnelbroker.net/nic/update?hostname=$tunnelid"
+		local try=0
+		local max=3
+
+		(
+			set -o pipefail
+			while [ $((++try)) -le $max ]; do
+				if proto_6in4_update $urlget $urlget_opts --user="$username" --password="$password" "$url" 2>&1 | \
+					sed -e 's,^Killed$,timeout,' -e "s,^,update $try/$max: ," | \
+					logger -t "$link";
+				then
+					logger -t "$link" "updated"
+					return 0
+				fi
+				sleep 5
+			done
+			logger -t "$link" "update failed"
+		)
+	}
+}
+
+proto_6in4_teardown() {
+	local cfg="$1"
+}
+
+proto_6in4_init_config() {
+	no_device=1
+	available=1
+
+	proto_config_add_string "ipaddr"
+	proto_config_add_string "ip6addr"
+	proto_config_add_array "ip6prefix"
+	proto_config_add_string "peeraddr"
+	proto_config_add_string "tunlink"
+	proto_config_add_string "tunnelid"
+	proto_config_add_string "username"
+	proto_config_add_string "password"
+	proto_config_add_string "updatekey"
+	proto_config_add_string "gateway"
+	proto_config_add_int "mtu"
+	proto_config_add_int "ttl"
+	proto_config_add_string "tos"
+}
+
+[ -n "$INCLUDE_ONLY" ] || {
+	add_protocol 6in4
+}