diff --git a/src/test/setup/radius-config/freeradius/mods-available/detail.example.com b/src/test/setup/radius-config/freeradius/mods-available/detail.example.com
new file mode 100644
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+++ b/src/test/setup/radius-config/freeradius/mods-available/detail.example.com
@@ -0,0 +1,27 @@
+# -*- text -*-
+#
+#  Detail file writer, used in the following examples:
+#
+#	raddb/sites-available/robust-proxy-accounting
+#	raddb/sites-available/decoupled-accounting
+#
+#  Note that this module can write detail files that are read by
+#  only ONE "listen" section.  If you use BOTH of the examples
+#  above, you will need to define TWO "detail" modules.
+#
+#  e.g. detail1.example.com && detail2.example.com
+#
+#
+#  We write *multiple* detail files here.  They will be processed by
+#  the detail "listen" section in the order that they were created.
+#  The directory containing these files should NOT be used for any
+#  other purposes.  i.e. It should have NO other files in it.
+#
+#  Writing multiple detail enables the server to process the pieces
+#  in smaller chunks.  This helps in certain catastrophic corner cases.
+#
+#  $Id: 827cdf57e70dc2ff2252016194f4bb846eecead2 $
+#
+detail detail.example.com {
+	filename = ${radacctdir}/detail.example.com/detail-%Y%m%d:%H:%G
+}