netdev - RE: Question about IP-in-IP tunneling

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Message-ID: <F33E0C3C2876A544ABD34CFBE345A4A4027BC08A94@NDMBX01.bbnet.ad>
Date:	Fri, 27 Feb 2009 09:45:21 +0530
From:	"Srivats P" <Srivats.P@...exant.com>
To:	"Santwona.Behera@....COM" <Santwona.Behera@....COM>
cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: Question about IP-in-IP tunneling

Assuming the outer IP header is a IPv4 header, the protocol field of this IPv4 header has IPROTO_IPIP (4) when the inner header is IPv4 and IPPROTO_IPV6 (41) when the inner header is IPv6

Is that what you asked?

- Srivats

-----Original Message-----
From: netdev-owner@...r.kernel.org [mailto:netdev-owner@...r.kernel.org] On Behalf Of Santwona.Behera@....COM
Sent: Friday, February 27, 2009 2:37 AM
To: netdev@...r.kernel.org
Subject: Question about IP-in-IP tunneling

A question for the IP tunneling experts:

For IP-in-IP tunneling, what are the cases when IPROTO_IPIP (4) is used in the protocol field of the outer IP header and the cases when
IPPROTO_IPV6 (41) is used instead?

thanks,
--santwona
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