From 7090b69845a8d304d1608e18efef383082114f33 Mon Sep 17 00:00:00 2001
From: Christian Breunig <christian@breunig.cc>
Date: Sun, 8 Oct 2023 09:08:35 +0200
Subject: T5630: pppoe: allow to specify MRU in addition to already
 configurable MTU

---
 docs/configuration/interfaces/pppoe.rst | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'docs')

diff --git a/docs/configuration/interfaces/pppoe.rst b/docs/configuration/interfaces/pppoe.rst
index 6e922cfb..b37e95a2 100644
--- a/docs/configuration/interfaces/pppoe.rst
+++ b/docs/configuration/interfaces/pppoe.rst
@@ -143,6 +143,19 @@ PPPoE options
 
      set interfaces pppoe pppoe0 default-route-distance 220
 
+.. cfgcmd:: set interfaces pppoe <interface> mru <mru>
+
+   Set the :abbr:`MRU (Maximum Receive Unit)` to `mru`. PPPd will ask the peer to
+   send packets of no more than `mru` bytes. The value of `mru` must be between 128
+   and 16384.
+
+   A value of 296 works well on very slow links (40 bytes for TCP/IP header + 256
+   bytes of data).
+
+   The default is 1492.
+
+   .. note:: When using the IPv6 protocol, MRU must be at least 1280 bytes.
+
 .. cfgcmd:: set interfaces pppoe <interface> idle-timeout <time>
 
    Use this command to set the idle timeout interval to be used with on-demand
-- 
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