Re: [EXTERNAL] Re: I-D Action: draft-templin-intarea-ipid-ext-00.txt

I would agree it must not be there when DF is 1.  When DF is zero, there is always the possibility that a forwarding router will fragment the packet.  From a practical standpoint, one wants the originator of the packet to provide the option whenever sending to a different subnet.

I would also suggest requiring originators to configure whether and under what circumstances the option is used.  Or perhaps some sort of automatic configuration protocol?

Thinking a little more, I worry about the amount of manual experimentation/configuration needed to deploy this.  It seems like it’s very subject to configuration rot over time.

What about combining this with some IP options to enable a simple IPSec transport using just MD5 or GMAC authentication (for data integrity only)?


>From Phone
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From: Int-area <[email protected]> on behalf of [email protected] <[email protected]>
Sent: Saturday, July 29, 2023 10:55:10 AM
To: Templin (US), Fred L <[email protected]>
Cc: IETF intarea WG <[email protected]>; IPv6 List <[email protected]>; ietf <[email protected]>
Subject: [EXTERNAL] Re: [Int-area] I-D Action: draft-templin-intarea-ipid-ext-00.txt


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Hi, Fred (et al.),

It might be useful to be clear whether this option MUST NOT be used on atomic datagrams (i.e., where IPv4 DF==1 or when not source fragmented) and that it cannot be used for purposes other than reassembly (as the regular ID is per RFC 6484).



Joe

—
Dr. Joe Touch, temporal epistemologist
www.strayalpha.com<http://www.strayalpha.com>

On Jul 28, 2023, at 12:54 PM, Templin (US), Fred L <[email protected]> wrote:

-----Original Message-----
From: I-D-Announce <[email protected]> On Behalf Of [email protected]
Sent: Friday, July 28, 2023 12:29 PM
To: [email protected]
Subject: I-D Action: draft-templin-intarea-ipid-ext-00.txt

A New Internet-Draft is available from the on-line Internet-Drafts
directories.

  Title           : Identification Extension Options for the Internet Protocol
  Author          : Fred L. Templin
  Filename        : draft-templin-intarea-ipid-ext-00.txt
  Pages           : 10
  Date            : 2023-07-28

Abstract:
  The Internet Protocol, version 4 (IPv4) header includes a 16 bit
  Identification field in all packets, but this length is too small to
  ensure reassembly integrity even at moderate data rates in modern
  networks.  Even for Internet Protocol, version 6 (IPv6), the 32 bit
  Identification field may be smaller than desired for some intended
  uses.  This document addresses these limitations by defining both an
  Identification Extension option for IPv4 and a corresponding
  Destination Option for IPv6.

The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-templin-intarea-ipid-ext/<https://protect-us.mimecast.com/s/NyAZClYEPYtO4AJ8SyGMHu/>

There is also an htmlized version available at:
https://datatracker.ietf.org/doc/html/draft-templin-intarea-ipid-ext-00<https://datatracker.ietf.org/doc/html/draft-templin-intarea-ipid-ext-00>

Internet-Drafts are also available by rsync at rsync.ietf.org::internet-drafts


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