From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [net-next 1/2] ip6_tunnel: put ip6tnl0 FB device into 'any' mode Date: Wed, 22 Oct 2014 12:47:59 -0400 (EDT) Message-ID: <20141022.124759.127380581033792550.davem@davemloft.net> References: <1413879088-13513-1-git-send-email-alan@al-an.info> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, edumazet@google.com To: alan@al-an.info Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:59475 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751445AbaJVQsE (ORCPT ); Wed, 22 Oct 2014 12:48:04 -0400 In-Reply-To: <1413879088-13513-1-git-send-email-alan@al-an.info> Sender: netdev-owner@vger.kernel.org List-ID: From: "Alexey Andriyanov" Date: Tue, 21 Oct 2014 12:11:27 +0400 > The fallback device is in ipv6 mode by default. > The mode can not be changed in runtime, so there > is no way to decapsulate ip4in6 packets coming from > various sources without creating the specific tunnel > ifaces for each peer. > > Cc: David Miller > Cc: Eric Dumazet > Signed-off-by: Alexey Andriyanov I don't think you can legitimately change this after all these years. You'll break someone's setup somehow. You're going to have to find a way to achieve what you want whilst keeping the default unchanged. Sorry.