From 1b1799e9ba70d5f190d89cef88ea67397db42c2c Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Mon, 16 Feb 2026 09:00:42 +0900
Subject: [PATCH] timesync: actually disables built-in fallback NTP servers
 when an empty string is specified

Follow-up for 3745770ae4dcf262707882a38f6c5ba2684329a3.
Fixes #40621.
---
 src/timesync/timesyncd-conf.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/timesync/timesyncd-conf.c b/src/timesync/timesyncd-conf.c
index f0af1f9d437..a273c0af9f0 100644
--- a/src/timesync/timesyncd-conf.c
+++ b/src/timesync/timesyncd-conf.c
@@ -86,6 +86,11 @@ int config_parse_servers(
 
         if (isempty(rvalue)) {
                 manager_flush_server_names(m, ltype);
+
+                /* FallbackNTP= with an empty string disables the built-in fallback servers. */
+                if (ltype == SERVER_FALLBACK)
+                        m->fallback_set = true;
+
                 return 0;
         }
 
-- 
2.47.3