From edeb72ddf155f44ebe9ecc27e5b8771d308c9e69 Mon Sep 17 00:00:00 2001
From: Nico Schottelius <nico@nico-notebook.schottelius.org>
Date: Fri, 26 Jul 2024 11:04:35 +0200
Subject: [PATCH] [openwrt/nat64] add babel->kernel support

Needed for local ibgp routes
---
 openwrt/openwrt-nat64-bootstrap.sh | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/openwrt/openwrt-nat64-bootstrap.sh b/openwrt/openwrt-nat64-bootstrap.sh
index e86ea9f..d9748fd 100755
--- a/openwrt/openwrt-nat64-bootstrap.sh
+++ b/openwrt/openwrt-nat64-bootstrap.sh
@@ -10,7 +10,7 @@
 # - do not provide IPv4 or IPv6 dhcp/ra on any interface
 
 if [ $# -lt 8 ] ; then
-    echo $0 "address hostname nat64prefix ipv4address ipv4gw asn routerid iBGPpeer1 [iBGPpeer2...]"
+    echo $0 "address hostname nat64prefix ipv4address ipv4gw asn routerid babelpw iBGPpeer1 [iBGPpeer2...]"
     exit 1
 fi
 
@@ -21,6 +21,7 @@ ipv4address=$1; shift
 ipv4gw=$1; shift
 asn=$1; shift
 routerid=$1; shift
+babelpw=$1; shift
 ibgp_peers="$@"
 
 # Now $@ only contains iBGP peers
@@ -72,11 +73,22 @@ cat > /etc/bird.conf <<BBB
 log syslog all;
 router id ${routerid};
 
+protocol device { }
+protocol bfd { }
+
 # Just announce, no kernel interaction
 protocol static static6 {
 	ipv6;
 	route ${nat64prefix} unreachable;
 }
+# for getting iBGP routes
+protocol babel {
+        interface "br-lan", "wan" { type wired; authentication mac; password "${babelpw}"; };
+        ipv6 { export where (source = RTS_DEVICE) || (source = RTS_BABEL); };
+}
+protocol kernel kernel_v6 {
+        ipv6 { export export where source ~ [ RTS_BABEL ]; };
+}
 BBB
 
 for ibgp_peer in ${ibgp_peers}; do