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Re: question about tunnel mode

To: Christophe Gouault <Christophe.Gouault@dassault-elec.fr>
Subject: Re: question about tunnel mode
From: "Theodore Y. Ts'o" <tytso@MIT.EDU>
Date: Fri, 8 May 1998 12:00:44 -0400
Address: 1 Amherst St., Cambridge, MA 02139
Cc: ipsec <ipsec@tis.com>
In-Reply-To: Christophe Gouault's message of Thu, 7 May 1998 15:15:31 +0200(MET DST), <Pine.SOL.3.95.980507150619.25262B-100000@viviane>
Phone: (617) 253-8091
Sender: owner-ipsec@ex.tis.com

   Date: Thu, 7 May 1998 15:15:31 +0200 (MET DST)
   From: Christophe Gouault <Christophe.Gouault@dassault-elec.fr>

   Hi ipsec folks,

   just a little question :
   when a packet is tunneled into AH or ESP, what is the value of the field
   "next header" in the IPsec header ?

   e.g. :   [IPv4 or v6][ESP][IPv4]     is it IP(4)    or IPIP(94) ?
	    [IPv4 or v6][ESP][IPv6]     is it IPv6(41) or IPIP(94) ?

   Sorry if somebody already asked the question...

The next header field in ESP would be IPv4 or IPv6, as appropriate.  

						- Ted

References:

question about tunnel mode

From: Christophe Gouault <Christophe.Gouault@dassault-elec.fr>

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