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Re: AHbis comments



At 4:04 PM -0400 6/16/03, Black_David@emc.com wrote:
>Here are a couple of transport related comments on
>draft-ietf-ipsec-rfc2402bis-03.txt .  These have no
>effect on the specified processing - they're mostly
>about updating the explanation and references.
>
>Section 3.3.3.1.1.1 describes the TOS field in the IP
>Header as mutable (that's correct) and says:
>
>        TOS -- This field is excluded because some routers are known to
>    change the value of this field, even though the IP specification
>    does not consider TOS to be a mutable header field.
>
>That's no longer correct.  The TOS field has now been
>replaced by a 6 bit DS field (contains a Diffserv
>codepoint) plus a 2 bit ECN field, and both are defined
>to be mutable.  RFC 2780 and RFC 3168 should be cited
>as the basis for this, and possibly also RFC 2474.  The
>same 6 bit DS + 2 bit ECN structure applies to the IPv6
>(Traffic) Class field (section 3.3.3.1.2.1), which
>has always been mutable, as the same RFCs specify it.
>
>Thanks,
>--David
>

Thanks for the corrections.  We obviously didn't look closely at this 
part of the document when we edited the rest.  We will make the 
appropriate changes.

Steve