From cfb53ccfccca23ef991482be9cf2a2cb87eef6b9 Mon Sep 17 00:00:00 2001
From: Matthias Frei <matzf@scion.org>
Date: Tue, 26 Mar 2024 09:20:07 +0100
Subject: [PATCH] fixup: port range

---
 doc/dev/design/router-port-dispatch.rst | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/doc/dev/design/router-port-dispatch.rst b/doc/dev/design/router-port-dispatch.rst
index fd5ab49f9c..3d266f1fd1 100644
--- a/doc/dev/design/router-port-dispatch.rst
+++ b/doc/dev/design/router-port-dispatch.rst
@@ -80,7 +80,7 @@ For SCMP :ref:`Echo Replies <echo-reply>` and :ref:`Traceroute Replies <tracerou
 SCMP Daemon
 ^^^^^^^^^^^
 
-The remaining functionality of the dispatcher, namely responding to SCMP echo requests, is implemented to a new, very simple "SCMP daemon".
+The remaining functionality of the dispatcher, namely responding to SCMP echo requests, is implemented in a new, very simple "SCMP daemon".
 This daemon opens UDP/IP port 30041, where it receives and replies to SCMP Echo requests.
 On this port, it will also receive any packet where an appropriate destination port could not be determined (e.g. SCMP error messages for malformed packages).
 These events are only logged and counted, but otherwise no appropriate action is possible.
@@ -178,8 +178,10 @@ The configured ``max`` value may be lower than ``min`` to specify an empty port
 If nothing is configured, the port range initially defaults to an empty range.
 The recommended port range is:
 - ``min``: ``31000``
-- ``max``: ``39999``
+- ``max``: ``32767``
 
+This range is just below the port range that is assigned by the old dispatcher (32768-65535),
+ensuring that legacy end hosts will be unaffected by the port dispatching in the router.
 As later step, this range will be adopted as the default.
 
 Rationale