netdev - [PATCH net] doc/ip-sysctl: add bc

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Date:   Wed, 13 Apr 2022 16:00:00 +0200
From:   Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jonathan Corbet <corbet@....net>
Cc:     Xin Long <lucien.xin@...il.com>, netdev@...r.kernel.org,
        linux-doc@...r.kernel.org,
        Nicolas Dichtel <nicolas.dichtel@...nd.com>
Subject: [PATCH net] doc/ip-sysctl: add bc_forwarding

Let's describe this sysctl.

Fixes: 5cbf777cfdf6 ("route: add support for directed broadcast forwarding")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@...nd.com>
---
 Documentation/networking/ip-sysctl.rst | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/networking/ip-sysctl.rst b/Documentation/networking/ip-sysctl.rst
index b0024aa7b051..66828293d9cb 100644
--- a/Documentation/networking/ip-sysctl.rst
+++ b/Documentation/networking/ip-sysctl.rst
@@ -267,6 +267,13 @@ ipfrag_max_dist - INTEGER
 	from different IP datagrams, which could result in data corruption.
 	Default: 64
 
+bc_forwarding - INTEGER
+	bc_forwarding enables the feature described in rfc1812#section-5.3.5.2
+	and rfc2644. It allows the router to forward directed broadcast.
+	To enable this feature, the 'all' entry and the input interface entry
+	should be set to 1.
+	Default: 0
+
 INET peer storage
 =================
 
-- 
2.33.0