netdev - Re: [net-next PATCH 02/02] net/ipv4: VTI support new module for ip

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Date:	Fri, 15 Jun 2012 07:37:07 +0200
From:	Steffen Klassert <steffen.klassert@...unet.com>
To:	Saurabh Mohan <saurabh.mohan@...tta.com>
Cc:	netdev@...r.kernel.org
Subject: Re: [net-next PATCH 02/02] net/ipv4: VTI support new module for
 ip_vti.

On Thu, Jun 14, 2012 at 07:43:59PM -0700, Saurabh Mohan wrote:
> > +
> > +	iph->version		= 4;
> > +	iph->protocol		= IPPROTO_ESP;
> 
> Why IPPROTO_ESP? What's with the other IPsec protocols?
> Shouldn't this be IPPROTO_IPIP?
> 
> @SM: VTI will work only with ESP not with AH (at least I have never heard of any one using it with AH). Plus I wanted to keep this module separate from IPIP (ip-in-ip tunnels).
> 

VTI should be independent of the IPsec protocol.
Our IPsec implementation supports AH (and IPCOMP)
so VTI should support these protocols too.

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