From 012ba4de03a852a50e0ca4b17d06bdb51ea4928b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bastian=20M=C3=A4user?= <mephisto@mephis.to>
Date: Sat, 21 Jul 2018 01:40:20 +0200
Subject: [PATCH] Added TCPMSS Clamping for IPv4

---
 roles/exit-ipv4/templates/rules.v4.j2 | 1 +
 1 file changed, 1 insertion(+)

diff --git a/roles/exit-ipv4/templates/rules.v4.j2 b/roles/exit-ipv4/templates/rules.v4.j2
index 5a2d727..0e23d23 100644
--- a/roles/exit-ipv4/templates/rules.v4.j2
+++ b/roles/exit-ipv4/templates/rules.v4.j2
@@ -9,5 +9,6 @@ COMMIT
 *filter
 :INPUT ACCEPT [1124:131621]
 :FORWARD ACCEPT [0:0]
+-A FORWARD -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
 :OUTPUT ACCEPT [1151:175226]
 COMMIT