From c5903aa694c674e8bd5217e5d2da4a4b589869c9 Mon Sep 17 00:00:00 2001
From: IceCodeNew <32576256+IceCodeNew@users.noreply.github.com>
Date: Wed, 13 Oct 2021 00:57:18 +0800
Subject: [PATCH] Enable mtu probing

---
 sysctl.conf | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sysctl.conf b/sysctl.conf
index c606c62..8cdfcee 100644
--- a/sysctl.conf
+++ b/sysctl.conf
@@ -220,6 +220,9 @@ net.ipv4.tcp_timestamps = 0
 # uncomment this if you are on a fixed-speed network
 #net.ipv4.tcp_slow_start_after_idle = 0
 
+# useful if there are ICMP blackholes between you and your clients (most likely there are).
+net.ipv4.tcp_mtu_probing=1
+
 # enabling SACK can increase the throughput
 # but SACK is commonly exploited and rarely used
 net.ipv4.tcp_sack = 0