Patchwork [net] ipv4: improve documentation of ip_no_pmtu_disc

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Submitter Hannes Frederic Sowa
Date Dec. 14, 2013, 3:42 a.m.
Message ID <20131214034213.GD7332@order.stressinduktion.org>
Download mbox | patch
Permalink /patch/301196/
State Accepted
Delegated to: David Miller
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Comments

Hannes Frederic Sowa - Dec. 14, 2013, 3:42 a.m.
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
---
 Documentation/networking/ip-sysctl.txt | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
David Miller - Dec. 17, 2013, 8:20 p.m.
From: Hannes Frederic Sowa <hannes@stressinduktion.org>
Date: Sat, 14 Dec 2013 04:42:13 +0100

> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>

Applied, thanks Hannes.
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Patch

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