T7415: Fix tcp flags matching

Empty leaf nodes are cleaned, causing the tcp
ack and syn flags to not match. These values are exempted from being cleaned.

1 files changed, 7 insertions, 1 deletions

diff --git a/src/conf_mode/qos.py b/src/conf_mode/qos.py
index 59e307a39..aed9407de 100755
--- a/src/conf_mode/qos.py
+++ b/src/conf_mode/qos.py
@@ -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