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Re: [Int-area] Fwd: New Version Notification for draft-herbert-ipv4-udpencap-eh-00.txt

Tom Herbert <tom@quantonium.net> Fri, 08 March 2019 15:38 UTC

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From: Tom Herbert <tom@quantonium.net>
Date: Fri, 08 Mar 2019 07:37:49 -0800
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To: Fernando Gont <fgont@si6networks.com>
Cc: "Templin (US), Fred L" <Fred.L.Templin@boeing.com>, "int-area@ietf.org" <int-area@ietf.org>
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Subject: Re: [Int-area] Fwd: New Version Notification for draft-herbert-ipv4-udpencap-eh-00.txt
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On Fri, Mar 8, 2019 at 2:02 AM Fernando Gont <fgont@si6networks.com> wrote:
>
> On 5/3/19 12:36, Tom Herbert wrote:
> > On Tue, Mar 5, 2019 at 6:21 AM Templin (US), Fred L
> > <Fred.L.Templin@boeing.com> wrote:
> >>
> >> Hi Tom,
> >>
> >> I'm sorry I haven't had a chance to read this yet, but the AERO draft has for
> >> a long time  proposed including an IPv6 fragment header as the next header
> >> in an IPv4 packet (see Appendix A of 'draft-templin-intarea-6706bis'). Is what
> >> you are proposing essentially the same thing?
> >>
> > Fred,
> >
> > Looks like it is for fragmentaton (ESP and AH are already extension
> > headers used with IPv4). Use of the fragment header with IPv4 is
> > compelling because it could address deficencies in IPv4 fragmentation
> > like the small ID field. It might also free up IPID to be used as an
> > IPv4 flow label (RFC6864 states IPID can be arbitrarily set for atomic
> > datagrams).
>
> Isn't the general consensus to move away from fragmentation as much as
> possible?
>
I don't believe so. There are still a lot of valid use cases for
fragmentation. draft-ietf-intarea-frag-fragile-09 talks about the
current state fo fragmentation.

Tom

>
> --
> Fernando Gont
> SI6 Networks
> e-mail: fgont@si6networks.com
> PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492
>
>
>
>

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