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Message-ID: <20131214034213.GD7332@order.stressinduktion.org>
Date: Sat, 14 Dec 2013 04:42:13 +0100
From: Hannes Frederic Sowa <hannes@...essinduktion.org>
To: netdev@...r.kernel.org
Subject: [PATCH net] ipv4: improve documentation of ip_no_pmtu_disc
Signed-off-by: Hannes Frederic Sowa <hannes@...essinduktion.org>
---
Documentation/networking/ip-sysctl.txt | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 12ba2cd..f76d177 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -16,8 +16,12 @@ ip_default_ttl - INTEGER
Default: 64 (as recommended by RFC1700)
ip_no_pmtu_disc - BOOLEAN
- Disable Path MTU Discovery.
- default FALSE
+ Disable Path MTU Discovery. If enabled and a
+ fragmentation-required ICMP is received, the PMTU to this
+ destination will be set to min_pmtu (see below). You will need
+ to raise min_pmtu to the smallest interface MTU on your system
+ manually if you want to avoid locally generated fragments.
+ Default: FALSE
min_pmtu - INTEGER
default 552 - minimum discovered Path MTU
--
1.8.3.1
--
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