On Tue, Oct 18, 2022 at 9:58 AM Marwan Fayed <marwan=
[email protected]> wrote:

> 1. At large-operator scale, where SNI is used to block instead IP,
> outer-SNI forces 'over-blocking' such that large swathes of the
> Internet will be unreachable to many. (I'm purposefully ignoring
> IP-specific matters to focus on ECH, itself.)
>

That seems like what ECH is designed to do, so I don't think you've
uncovered a flaw here. You can find arguments along these lines for any
kind of encryption.

thanks,
Rob
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