Updated docs to include mention of the unix domain socket functionality for the pipe...

diff --git a/pdns/docs/pdns.xml b/pdns/docs/pdns.xml
index 36ea4136066e4d50f6b19064c8128954d6e61a64..b91bc0f2f596cac61761524d8025aa9faad42763 100644 (file)
--- a/pdns/docs/pdns.xml
+++ b/pdns/docs/pdns.xml
@@ -17689,6 +17689,10 @@ This setting will make PowerDNS renotify the slaves after an AXFR is *received*
              <para>
                Command to launch as backend. Mandatory.
              </para>
+        <para>
+    Or the path to a unix domain socket file. The socket should already be open and listening before pdns starts.
+    Available since version 3.3.
+        </para>
            </listitem>
          </varlistentry>
          <varlistentry>