From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH v3 net-next] net: ipv6: Add sysctl entry to disable MTU updates from RA Date: Sun, 25 Jan 2015 14:55:05 -0800 (PST) Message-ID: <20150125.145505.1692145787461736994.davem@davemloft.net> References: <1421773565-5181-1-git-send-email-harouth@codeaurora.org> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: harouth@codeaurora.org Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:37793 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751053AbbAYWzG (ORCPT ); Sun, 25 Jan 2015 17:55:06 -0500 In-Reply-To: <1421773565-5181-1-git-send-email-harouth@codeaurora.org> Sender: netdev-owner@vger.kernel.org List-ID: From: Harout Hedeshian Date: Tue, 20 Jan 2015 10:06:05 -0700 > The kernel forcefully applies MTU values received in router > advertisements provided the new MTU is less than the current. This > behavior is undesirable when the user space is managing the MTU. Instead > a sysctl flag 'accept_ra_mtu' is introduced such that the user space > can control whether or not RA provided MTU updates should be applied. The > default behavior is unchanged; user space must explicitly set this flag > to 0 for RA MTUs to be ignored. > > Signed-off-by: Harout Hedeshian Applied.