1 files changed, 8 insertions, 2 deletions
diff --git a/src/conf_mode/qos.py b/src/conf_mode/qos.py
index 59e307a39..326d617a2 100755
--- a/src/conf_mode/qos.py
+++ b/src/conf_mode/qos.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2023-2024 VyOS maintainers and contributors
+# Copyright VyOS maintainers and contributors <maintainers@vyos.io>
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -85,7 +85,13 @@ def _clean_conf_dict(conf):
         }
     """
     if isinstance(conf, dict):
-        return {node: _clean_conf_dict(val) for node, val in conf.items() if val != {} and _clean_conf_dict(val) != {}}
+        preserve_empty_nodes = {'syn', 'ack'}
+
+        return {
+            node: _clean_conf_dict(val)
+            for node, val in conf.items()
+            if (val != {} and _clean_conf_dict(val) != {}) or node in preserve_empty_nodes
+        }
     else:
         return conf