mention RTRTR
@@ -105,10 +105,16 @@ The service supports GET requests with the following paths:
The RTR Service
---------------
-Routinator supports RPKI-RTR as specified in :RFC:`8210` as well as the older
-version described in :RFC:`6810`. When launched as an RTR server, routers with
-support for route origin validation (ROV) can connect to Routinator to fetch the
-processed data.
+Routinator has a built-in server for the RPKI-to-Router (RTR) protocol. It
+supports :RFC:`8210` as well as the older version described in :RFC:`6810`. When
+launched as an RTR server, routers with support for route origin validation
+(ROV) can connect to Routinator to fetch the processed data.
+
+.. Tip:: If you would like to run the RTR server as a separate daemon, for
+ example because you want to centralise validation and distribute
+ processed data to various locations where routers can connect, then
+ NLnet Labs provides `RTRTR
+ <https://www.nlnetlabs.nl/projects/rpki/rtrtr/>`_.
Like the HTTP server, the RTR server is not started by default, nor does it have
a default host or port. Thus, in order to start the RTR server at 192.0.2.13 and
