From 1ea07c6dba1cdae2f0d4684d3ef7d54faf7ee700 Mon Sep 17 00:00:00 2001
From: lehmanju <lehmanju@devpi.de>
Date: Tue, 10 Mar 2026 12:42:23 +0100
Subject: [PATCH] Modbus: close connection when unregistering (#28034)

---
 util/modbus/modbus.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/util/modbus/modbus.go b/util/modbus/modbus.go
index 2283faa1f..86aa504f5 100644
--- a/util/modbus/modbus.go
+++ b/util/modbus/modbus.go
@@ -88,6 +88,7 @@ func unregisterConnection(key string) {
 		return
 	}
 
+	conn.Close()
 	delete(connections, key)
 }