From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mika Liljeberg Subject: Re: Fw: [PATCH] IPv6: Allow 6to4 routes with SIT Date: 17 Jul 2003 01:28:58 +0300 Sender: netdev-bounce@oss.sgi.com Message-ID: <1058394538.5778.17.camel@hades> References: <200307151428.SAA08491@dub.inr.ac.ru> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: Pekka Savola , davem@redhat.com, jmorris@redhat.com, netdev@oss.sgi.com Return-path: To: kuznet@ms2.inr.ac.ru In-Reply-To: <200307151428.SAA08491@dub.inr.ac.ru> Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org Alexey, > And this silly combination is still _better_ than 6to4 address, which > contains redundant information, which can be mixed up with real _IPv6_ > 6to4 addresses and whihc contains IPv4 address in some place which > used to be identification of a network prefix. While I see where you're coming from, I don't really understand what the fuss is all about. IMHO, the real hack is being able to specify the tunnel endpoint using a gateway route in the first place. Whether that gateway address is IPv4-compatible or a 6to4 address is just a minor detail. I view my patch as a simple convenience to the user, extending a hack that already exists. A more "correct" way would be to specify the gateway address in the remote address field of the point-to-point SIT interface, and live with the fact that you need a separate SIT interface for each 6to4 gateway that you want to tunnel to. This already works, so the IPv4-compat route hack is actually redundant. My understanding was that it is there simply for convenience. MikaL