From 287c13beb8e1493509519dc52f3659d8c1f4c296 Mon Sep 17 00:00:00 2001
From: Franco Fichtner <franco@opnsense.org>
Date: Sat, 27 Jul 2024 10:02:25 +0200
Subject: [PATCH] interfaces: avoid touching SLAAC address for now

---
 src/etc/rc.newwanipv6 | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/etc/rc.newwanipv6 b/src/etc/rc.newwanipv6
index 3bb90e68b..02db5dbad 100755
--- a/src/etc/rc.newwanipv6
+++ b/src/etc/rc.newwanipv6
@@ -105,8 +105,14 @@ switch ($config['interfaces'][$interface]['ipaddrv6'] ?? 'none') {
         plugins_configure('dhcp', false, ['inet6']);
         break;
     default:
-        /* flush SLAAC addressing in order to make any of our own addresses preferred */
-        shell_safe('/usr/local/sbin/ifctl -i %s -f', $device);
+        /*
+         * XXX We would like to discourage SLAAC addressing here but
+         * in reality this is highly ISP dependent and the kernel is
+         * not forthcoming in the quest as it likes to prefer this because
+         * it came first breaking some setups but making others work at
+         * the same time making it impractical to infer which setup we
+         * currently require.
+         */
         break;
 }