diff -up gimp-2.99.18/etc/gimprc.in.no-phone-home-default gimp-2.99.18/etc/gimprc.in
--- gimp-2.99.18/etc/gimprc.in.no-phone-home-default	2024-05-07 14:40:02.746185394 +0200
+++ gimp-2.99.18/etc/gimprc.in	2024-05-07 14:40:49.353862228 +0200
@@ -399,7 +399,7 @@
 # Check for availability of GIMP updates through background internet queries.
 #  Possible values are yes and no.
 # 
-# (check-updates yes)
+(check-updates no)
 
 # Timestamp of the last update check.  This is an integer value.
 #