From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: [PATCH net-next-2.6] ipv4: sysctl to block responding on down interface Date: Mon, 28 Jun 2010 21:42:01 +0200 Message-ID: <1277754121.4235.673.camel@edumazet-laptop> References: <20100611084854.0680c014@nehalam> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Stephen Hemminger , David Miller , netdev@vger.kernel.org To: Joakim Tjernlund Return-path: Received: from mail-ww0-f46.google.com ([74.125.82.46]:60217 "EHLO mail-ww0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752735Ab0F1TmH (ORCPT ); Mon, 28 Jun 2010 15:42:07 -0400 Received: by wwd20 with SMTP id 20so283700wwd.19 for ; Mon, 28 Jun 2010 12:42:04 -0700 (PDT) In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: Le lundi 28 juin 2010 =C3=A0 21:03 +0200, Joakim Tjernlund a =C3=A9crit= : > Stephen Hemminger wrote on 2010/06/11 17:48:5= 4: > > > > When Linux is used as a router, it is undesirable for the kernel to= process > > incoming packets when the address assigned to the interface is down= =2E > > The initial problem report was for a management application that us= ed ICMP > > to check link availability. > > > > The default is disabled to maintain compatibility with previous beh= avior. > > This is not recommended for server systems because it makes fail ov= er more > > difficult, and does not account for configurations where multiple i= nterfaces > > have the same IP address. > > > > Signed-off-by: Stephen Hemminger >=20 > Ping David et. all? > I too want this. You probably missed David reply http://permalink.gmane.org/gmane.linux.network/164494