From 5424d144242c5b85176465acb7376237d80c6d91 Mon Sep 17 00:00:00 2001
From: Ivan Nardi <12729895+IvanNardi@users.noreply.github.com>
Date: Fri, 31 Jan 2025 21:22:47 +0100
Subject: DNS: another fix about the relationship between FPC and
 subclassification (#2709)

See: c669bb314
---
 src/lib/ndpi_main.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src')

diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c
index 5b5506195..b67244695 100644
--- a/src/lib/ndpi_main.c
+++ b/src/lib/ndpi_main.c
@@ -10343,6 +10343,8 @@ static u_int16_t ndpi_automa_match_string_subprotocol(struct ndpi_detection_modu
 
     return(flow->detected_protocol_stack[0]);
   }
+  if(!flow && matching_protocol_id != NDPI_PROTOCOL_UNKNOWN)
+    return matching_protocol_id;
 
 #ifdef NDPI_ENABLE_DEBUG_MESSAGES
   {
-- 
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