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Date:	Thu, 06 Mar 2008 23:19:47 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	kazunori@...azawa.org
Cc:	netdev@...r.kernel.org, usagi-core@...ux-ipv6.org
Subject: Re: [PATCH][IPSEC] inter address family IPsec tunnel on the fly

From: Kazunori MIYAZAWA <kazunori@...azawa.org>
Date: Fri, 07 Mar 2008 15:32:09 +0900

> David Miller wrote:
> > I also wonder if the PF_KEY limitation really exists.  For example we
> > will set x->sel.family etc. from the SADB_EXT_ADDRESS_PROXY attribute
> > if present.
> > 
> 
> Yes, we have SADB_EXT_ADDRESS_PROXY. But it is not enough, I think.
> xfrm_selector has both src and dst so that we need some way to
> specify the address is src or dst.
> 
> from RFC2367

Thank you for this information.

> > Finally, if the determination can be made in the data path, it
> > by definition could be made during rule insertion which is much
> > more efficient and appropriate.
> 
> I agree with you.

I am sure there is a simple solution to this problem somewhere,
it is just hiding :-)

Anyways, since I will be in Japan we can discuss alternate
implementation schemes.

Thank you for working on this problem.
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