Merge branch 'doc-dnsproxy-resolver' into 'master'

doc/dnsproxy: describe forwarding to resolver use-case

See merge request !941

src/knot/modules/dnsproxy/dnsproxy.rst

@@ -10,6 +10,7 @@ There are several uses of this feature:
 
 * A substitute public-facing server in front of the real one
 * Local zones (poor man's "views"), rest is forwarded to the public-facing server
+* Using the fallback to forward queries to a resolver
 * etc.
 
 .. NOTE::
@@ -42,6 +43,11 @@ When clients query for anything in the ``local.zone``, they will be
 responded to locally. The rest of the requests will be forwarded to the
 specified server (``10.0.1.1`` in this case).
 
+To use dnsproxy to forward queries to local Knot Resolver, make sure to
+`override its default port<https://knot-resolver.readthedocs.io/en/stable/daemon.html#kresd-socket-override-port>`_.
+The selected port can be specified in the ``address`` field like
+``127.0.0.1@53000``.
+
 Module reference
 ----------------