From 12192865c3ca0e1c2139afabab508e0087b14982 Mon Sep 17 00:00:00 2001
From: Mitchell Riedstra <mitch@riedstra.dev>
Date: Wed, 23 Feb 2022 20:19:37 -0500
Subject: Initial

---
 etc/local.d/radvd.hook | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100755 etc/local.d/radvd.hook

(limited to 'etc/local.d/radvd.hook')

diff --git a/etc/local.d/radvd.hook b/etc/local.d/radvd.hook
new file mode 100755
index 0000000..8137d0b
--- /dev/null
+++ b/etc/local.d/radvd.hook
@@ -0,0 +1,42 @@
+#!/bin/sh
+# Brutally simply hook for dhcpcd assuming you only have a single interface with
+# delegated prefixes, which is the case for most home routers.
+
+# This writes out a radvd conf for the interface and prefix in question and
+# blindly restarts the daemon.
+
+write_radvd() {
+
+if [ -z "$new_delegated_dhcp6_prefix" ] ; then
+	echo "Cannot continue without delegated prefix"
+	exit 1;
+fi
+
+conf="interface $interface {
+	AdvSendAdvert on;"
+
+for prefix in $new_delegated_dhcp6_prefix ; do
+conf="$conf
+	prefix $prefix
+	{
+		AdvOnLink on;
+		AdvAutonomous on;
+		AdvRouterAddr on;
+	};
+"
+done
+
+conf="$conf
+};"
+
+echo "$conf" > /etc/radvd.conf
+
+/etc/init.d/radvd restart
+}
+
+case "$reason" in
+DELEGATED6)
+write_radvd
+;;
+esac
+
-- 
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