document bind-supermaster-destdir

diff --git a/docs/backends/bind.rst b/docs/backends/bind.rst
index 16a8f19b529d19ebb2995df91797f6c09d09ea03..7b3da21e39ab6271fd8f39319e39a120b2dce677 100644 (file)
--- a/docs/backends/bind.rst
+++ b/docs/backends/bind.rst
@@ -117,7 +117,6 @@ The file must contain one IP and account per line, separated by whitespace.
 
 BIND backend can only read this file, not write it.
 
-
 .. _setting-bind-supermaster-config:
 
 ``bind-supermaster-config``
@@ -127,6 +126,14 @@ When a new zone is configured via the autosecondary mechanism, bindbackend *writ
 
 Your ``bind-config`` file should have an ``include`` statement to make sure this file is read on startup.
 
+.. _setting-bind-supermaster-destdir:
+
+``bind-supermaster-destdir``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Each new zone configured via the autosecondary mechanism gets a zone file in this directory.
+This directory must be writable.
+
 .. _bind-operation:
 
 Operation