From e803f8b3c0956e8b9f3992433d0a3caf9cb4c899 Mon Sep 17 00:00:00 2001
From: Christian Hesse <mail@eworm.de>
Date: Tue, 22 Oct 2024 22:35:14 +0200
Subject: ipv6-update: create a dynamic address-list entry only

This should make sure that the script runs once after reboot, even if
the prefix does not change.

An existing static entry needs to be removed to make this work!

https://github.com/eworm-de/routeros-scripts/issues/85
---
 doc/ipv6-update.md | 12 ++++++++----
 ipv6-update.rsc    |  4 ++--
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/doc/ipv6-update.md b/doc/ipv6-update.md
index 88600c5..42f0fe4 100644
--- a/doc/ipv6-update.md
+++ b/doc/ipv6-update.md
@@ -45,13 +45,17 @@ Installing [ppp-on-up](ppp-on-up.md) may solve this.
 Configuration
 -------------
 
-An address list entry is updated with current prefix and can be used in
-firewall rules, comment has to be "`ipv6-pool-`" and actual pool name:
+As an address-list entry is mandatory a dynamic one is created automatically.
+It is updated with current prefix and can be used in firewall rules.
+
+Alternatively a static address-list entry can be used, where comment has to
+be "`ipv6-pool-`" and actual pool name. Use what ever list is desired, and
+create it with:
 
     /ipv6/firewall/address-list/add address=2003:cf:2f0f:de00::/56 comment=ipv6-pool-isp list=extern;
 
-As this entry is mandatory it is created automatically if it does not exist,
-with the comment also set for list.
+If the dynamic entry exists already you need to remove it before creating
+the static one..
 
 Address list entries for specific interfaces can be updated as well. The
 interface needs to get its address from pool `isp` and the address list entry
diff --git a/ipv6-update.rsc b/ipv6-update.rsc
index 47bf3de..ccc0eb9 100644
--- a/ipv6-update.rsc
+++ b/ipv6-update.rsc
@@ -37,8 +37,8 @@
 
   :local Pool [ /ipv6/pool/get [ find where prefix=$PdPrefix ] name ];
   :if ([ :len [ /ipv6/firewall/address-list/find where comment=("ipv6-pool-" . $Pool) ] ] = 0) do={
-    /ipv6/firewall/address-list/add list=("ipv6-pool-" . $Pool) address=:: comment=("ipv6-pool-" . $Pool);
-    $LogPrint warning $ScriptName ("Added ipv6 address list entry for ipv6-pool-" . $Pool);
+    /ipv6/firewall/address-list/add list=("ipv6-pool-" . $Pool) address=:: comment=("ipv6-pool-" . $Pool) dynamic=yes;
+    $LogPrint warning $ScriptName ("Added dynamic ipv6 address list entry for ipv6-pool-" . $Pool);
   }
   :local AddrList [ /ipv6/firewall/address-list/find where comment=("ipv6-pool-" . $Pool) ];
   :local OldPrefix [ /ipv6/firewall/address-list/get ($AddrList->0) address ];
-- 
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