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tayga: add options for static mapping

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The commit adds options for static mapping, which is essential for
464xlat(clat) usage. But be noted that routes and firewall rules have
to be configured manually, for now.

To use tayga as clat/nat46:
0. specify $ipv4_addr, $prefix, $map_{ipv4,ipv6} properly, and
   set $noroutes to 1 to prevent creating routes for nat64
1. add custom IPv4 routes to tayga, possibly with a reasonable metric
   for default route
2. add a SNAT firewall rule for processing IPv4 traffic destined for
   tayga
3. add firewall rules to allow FORWARD traffic between tayga and WAN6
4. add a $map_ipv6 route to tayga for guiding return traffic

Signed-off-by: Hung-I Wang <whygowe@gmail.com>
This commit is contained in:
Hung-I Wang
2024-09-03 00:08:22 +08:00
committed by Josef Schlehofer
parent 7ba22665d7
commit 8cc9191c7f
2 changed files with 9 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
ipv6/tayga/Makefile
View File

@@ -4,7 +4,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=tayga
PKG_VERSION:=0.9.2
PKG_RELEASE:=3
PKG_RELEASE:=4
PKG_SOURCE:=tayga-$(PKG_VERSION).tar.bz2
PKG_SOURCE_URL:=http://www.litech.org/tayga/

11
ipv6/tayga/files/tayga-proto.sh
View File

@@ -14,8 +14,8 @@ proto_tayga_setup() {
local iface="$2"
local link="tayga-$cfg"
local ipv4_addr ipv6_addr prefix dynamic_pool ipaddr ip6addr noroutes
json_get_vars ipv4_addr ipv6_addr prefix dynamic_pool ipaddr ip6addr noroutes
local ipv4_addr ipv6_addr prefix dynamic_pool map_ipv4 map_ipv6 ipaddr ip6addr noroutes
json_get_vars ipv4_addr ipv6_addr prefix dynamic_pool map_ipv4 map_ipv6 ipaddr ip6addr noroutes
[ -z "$ipv4_addr" -o -z "$prefix" ] && {
proto_notify_error "$cfg" "REQUIRED_PARAMETERS_MISSING"
proto_block_restart "$cfg"
@@ -34,8 +34,10 @@ proto_tayga_setup() {
echo "prefix $prefix" >>$tmpconf
[ -n "$dynamic_pool" ] &&
echo "dynamic-pool $dynamic_pool" >>$tmpconf
# TODO: Allow setting multiple static mapping
[ -n "$map_ipv4" ] &&
echo "map $map_ipv4 $map_ipv6" >>$tmpconf
echo "data-dir /var/run/tayga/$cfg" >>$tmpconf
#TODO: Support static mapping of IPv4 <-> IPv6
# here we create TUN device and check configuration
tayga -c $tmpconf --mktun
@@ -63,6 +65,7 @@ proto_tayga_setup() {
proto_add_ipv6_route "$prefix6" "$mask6"
}
}
# TODO: Set up routes and firewall rules for clat/nat46 automatically?
proto_send_update "$cfg"
@@ -86,6 +89,8 @@ proto_tayga_init_config() {
proto_config_add_string "ipv6_addr"
proto_config_add_string "prefix"
proto_config_add_string "dynamic_pool"
proto_config_add_string "map_ipv4"
proto_config_add_string "map_ipv6"
proto_config_add_string "ipaddr"
proto_config_add_string "ip6addr:ip6addr"
proto_config_add_boolean "noroutes"