From 9aaa640a8bd3d2043b5f4a77a2b444752af477a6 Mon Sep 17 00:00:00 2001
From: Nico Schottelius <nico@nico-notebook.schottelius.org>
Date: Thu, 15 Aug 2024 13:39:44 +0200
Subject: [PATCH] Add script to generate dns entries from interface addresses

---
 dns-generate-for-device.sh | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 dns-generate-for-device.sh

diff --git a/dns-generate-for-device.sh b/dns-generate-for-device.sh
new file mode 100644
index 0000000..85c8f61
--- /dev/null
+++ b/dns-generate-for-device.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+# Nico Schottelius, 2024-08-14
+#
+# Retrieve an IPv6 interface address and generate a generic
+# DNS zone file
+
+if [ #$ -ne 3 ]; then
+    echo "$0 address interface hostname"
+    exit 1
+fi
+
+address=$1; shift
+interface=$1; shift
+hostname=$1; shift
+
+interface_addr=$(ssh "root@${address}" "ip -o a sh dev ${interface}"  | awk '/inet6/ { print $4 }' | grep -v ^fe80| sed 's,/.*,,')
+
+echo "${hostname}     AAAA ${interface_addr}"