added unbound to external deps

external/unbound/pythonmod/doc/examples/example2.rst

@@ -0,0 +1,46 @@
+Response generation
+=====================
+
+This example shows how to handle queries and generate response packet.
+
+.. note::
+   If the python module is the first module and validator module is enabled (``module-config: "python validator iterator"``),
+   a return_msg security flag has to be set at least to 2. Leaving security flag untouched causes that the
+   response will be refused by unbound worker as unbound will consider it as non-valid response.
+
+Complete source code
+--------------------
+
+.. literalinclude:: ../../examples/resgen.py
+   :language: python
+
+Testing
+-------
+
+Run the unbound server:
+
+``root@localhost>unbound -dv -c ./test-resgen.conf``
+
+Query for a A record ending with .localdomain
+
+``dig A test.xxx.localdomain @127.0.0.1``
+
+Dig produces the following output::
+
+	;; global options:  printcmd
+	;; Got answer:
+	;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48426
+	;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
+	
+	;; QUESTION SECTION:
+	;test.xxx.localdomain.		IN	A
+	
+	;; ANSWER SECTION:
+	test.xxx.localdomain.	10	IN	A	127.0.0.1
+	
+	;; Query time: 2 msec
+	;; SERVER: 127.0.0.1#53(127.0.0.1)
+	;; WHEN: Mon Jan 01 12:46:02 2009
+	;; MSG SIZE  rcvd: 54
+
+As we handle (override) in python module only queries ending with "localdomain.", the unboud can still resolve host names.