From dd67715a493e372936d815cd9d46904fa4681073 Mon Sep 17 00:00:00 2001
From: Michael Tremer <michael.tremer@ipfire.org>
Date: Tue, 29 Jul 2025 14:42:18 +0000
Subject: [PATCH] network: Fail if no master device has been configured for
 slave zones

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---
 config/udev/network-hotplug-master | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/config/udev/network-hotplug-master b/config/udev/network-hotplug-master
index 4fa1154c2..b61b657bb 100644
--- a/config/udev/network-hotplug-master
+++ b/config/udev/network-hotplug-master
@@ -86,6 +86,12 @@ fi
 # The name of the virtual master interface
 MASTER="$(get_value "${ZONE}_DEV")"
 
+# Fail if no master device has been configured
+if [ -z "${MASTER}" ]; then
+	logger "No ${ZONE}_DEV configured"
+	exit 1
+fi
+
 # Fetch the MTU
 MTU="$(get_value "${ZONE}_MTU")"
 
-- 
2.47.3