From c48280d6c1f054f89863c1e367ba3e5a2a001527 Mon Sep 17 00:00:00 2001
From: Christian Poessinger <christian@poessinger.com>
Date: Mon, 15 Jul 2019 19:18:28 +0200
Subject: PPPoE: move MSS to routing

---
 docs/routing/mss-clamp.rst | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'docs/routing/mss-clamp.rst')

diff --git a/docs/routing/mss-clamp.rst b/docs/routing/mss-clamp.rst
index f61aa956..9409690a 100644
--- a/docs/routing/mss-clamp.rst
+++ b/docs/routing/mss-clamp.rst
@@ -37,3 +37,5 @@ To achieve the same for IPv6 please use:
   set firewall options interface pppoe0 adjust-mss6 '1280'
   set firewall options interface wg02 adjust-mss6 '1280'
 
+.. note:: MSS value = MTU - 20 (IP header) - 20 (TCP header), resulting in 1452
+          bytes on a 1492 byte MTU.
-- 
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