From 37a32842fd737a832e8a5d4e7cfdb3440153eec2 Mon Sep 17 00:00:00 2001
From: Ad Schellevis <ad@opnsense.org>
Date: Mon, 30 Dec 2024 16:03:59 +0100
Subject: [PATCH] System: Routes: Configuration - add support for rfc5549,
 missing implementation part for https://github.com/opnsense/core/issues/8157

When specifying different protocols for target network and gateway address, add protocol prefixes to both.
---
 src/etc/inc/system.inc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/etc/inc/system.inc b/src/etc/inc/system.inc
index a4db7cb8b..0c97b3932 100644
--- a/src/etc/inc/system.inc
+++ b/src/etc/inc/system.inc
@@ -751,6 +751,10 @@ function system_routing_configure($verbose = false, $interface_map = null, $moni
 
             /* XXX some day we might want to convert to safer mwexecf() */
             $cmd = " -{$ipproto} {$blackhole} " . escapeshellarg($rtent['network']) . " ";
+            if (is_ipaddrv6($gatewayip) && $ipproto == 'inet') {
+                /* rfc5549: gateway protocol differs, so we need to define it as well */
+                $cmd .= ' -inet6 ';
+            }
 
             if (!empty($rtent['disabled'])) {
                 mwexec("/sbin/route delete {$cmd}", true);