add note for rlm_preprocess

diff --git a/raddb/README.rst b/raddb/README.rst
index 590c023b887dd8ae392bab70aecc894dd19ef3d1..a3be77e580b328b59ca07671c5936f9be3b1394e 100644 (file)
--- a/raddb/README.rst
+++ b/raddb/README.rst
@@ -348,6 +348,14 @@ some systems using NIS or NSS will not supply passwords to the
 ``unix`` module.  For those systems, we recommend putting users and
 passwords into a database, instead of relying on ``/etc/passwd``.
 
+rlm_preprocess
+~~~~~~~~~~~~~~
+
+In 2.x.x ``huntroups`` and ``users`` files were loaded from default locations
+without being configured explicitly. Since 3.0 you need to set
+``huntgroups`` and ``users`` configuration item in module section in order
+to get them being processed.
+
 New Modules
 -----------