First of all my apologies for letting -00 to expire, I'm working on
-01 but failed to submit in time...partially due to an issue described
below..

On Tue, Jan 23, 2024 at 10:10 PM Michael Richardson
<[email protected]> wrote:
> While the whole point of the SPI7/8 mechanism is that it can be operated
> completely without IKEv2 involved at all.

So I was working on the text which focuses on SPI7/8 case only, when I
got stuck.
Let's say a device sends an ESP Echo request packet but no replies are received.
How can the sender differentiate between:
- there is a problem with e2e ESP connectivity
- the receiver doesn't support ESP Ping, so the packet with SPI=7 is
just silently discarded?

It looks like the ESP ping capability needs to be negotiated.
The question is: shall it be another IKEv2 Configuration attribute or smth else?
Anyway it means that the proposed mechanism can not be completely
uncoupled from IKE...

--
Cheers, Jen Linkova

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