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[Int-area] New Draft - ICMPv6 Loopback

Tal Mizrahi <tal.mizrahi.phd@gmail.com> Tue, 06 June 2023 11:54 UTC

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From: Tal Mizrahi <tal.mizrahi.phd@gmail.com>
Date: Tue, 06 Jun 2023 14:54:27 +0300
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Subject: [Int-area] New Draft - ICMPv6 Loopback
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Hi,

New draft: https://datatracker.ietf.org/doc/draft-mcb-intarea-icmpv6-loopback/

We have posted a new draft that proposes two new ICMPv6 message types:
Loopback Request and Reply.
ICMPv6 Loopback is very similar to Echo, except that after a Loopback
Request is sent, its corresponding Reply includes as much of the IPv6
Loopback Request packet as possible, including the IPv6 header and
IPv6 extension headers and options if they are present.

We believe that ICMPv6 Loopback can be very useful for returning IPv6
options that were included in Request packet back to the sender,
including for example sending IOAM [RFC 9197] data from the Request
back to the sender, sending the SRH [RFC 8754] of the Request back to
the sender, as well as for in-progress / future protocols such as
draft-filsfils-spring-path-tracing and draft-kumar-ippm-ifa.

We would be happy for feedback, as well as suggestions about whether
the INT-AREA WG is the right place to discuss this draft.

Cheers,
Tal.

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