From mboxrd@z Thu Jan 1 00:00:00 1970 From: Timo Teras Subject: Re: [net-next,v3] GRE over IPv6 Date: Mon, 30 Jul 2012 14:38:06 +0300 Message-ID: <20120730143806.41f759fd@vostro> References: <1368610.TAsHNfv2Eb@comp1> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: xeb@mail.ru Return-path: Received: from mail-ey0-f174.google.com ([209.85.215.174]:51604 "EHLO mail-ey0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752755Ab2G3Liv (ORCPT ); Mon, 30 Jul 2012 07:38:51 -0400 Received: by eaak13 with SMTP id k13so1080897eaa.19 for ; Mon, 30 Jul 2012 04:38:50 -0700 (PDT) In-Reply-To: <1368610.TAsHNfv2Eb@comp1> Sender: netdev-owner@vger.kernel.org List-ID: On Sat, 28 Jul 2012 22:12:42 -0000 xeb@mail.ru wrote: > GRE over IPv6 implementation. > > Signed-off-by: Dmitry Kozlov > > --- > Changes: > Initialize nt->dev before calling ip6gre_tnl_link_config in > ip6gre_newlink. > Add missing ip6gre.c > > include/linux/if_arp.h | 1 + > include/linux/if_tunnel.h | 3 + > include/linux/ip6_tunnel.h | 18 + > include/net/ip6_tunnel.h | 40 +- > include/net/ipv6.h | 1 + > net/ipv6/Kconfig | 16 + > net/ipv6/Makefile | 1 + > net/ipv6/ip6_gre.c | 1817 > ++++++++++++++++++++++++++++++++++++++++++++ > net/ipv6/ip6_tunnel.c | 86 ++- 9 files changed, 1958 > insertions(+), 25 deletions(-) Would it be possible and/or feasible to instead modify ip_gre to support also ipv6 as outer protocol? It already has ipv6 stuff in it for the inner protocol support. And it would avoid duplicating most of the code. And I would especially love that approach, since I could then on per-target basis say if it should be contacted with IPv4 or IPv6. As in: ip addr add 10.0.0.1/24 dev gre1 ip neigh add 10.0.0.2 lladdr 192.168.x.x dev gre1 nud permanent ip neigh add 10.0.0.3 lladdr fe80::xxxx:xxxx:xxxx:xxxx/64 dev gre1 nud permanent - Timo