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Re: [babel] Secdir last call review of draft-ietf-babel-rtt-extension-04

Shivan Kaul Sahib <shivankaulsahib@gmail.com> Thu, 12 October 2023 20:21 UTC

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From: Shivan Kaul Sahib <shivankaulsahib@gmail.com>
Date: Thu, 12 Oct 2023 13:20:47 -0700
Message-ID: <CAG3f7MjLCCr8iYNO20V0qiLK0EUUv3Q0fJVOE5ENEkJyZ6toTg@mail.gmail.com>
To: Juliusz Chroboczek <jch@irif.fr>
Cc: David Schinazi <dschinazi.ietf@gmail.com>, secdir@ietf.org, babel@ietf.org, draft-ietf-babel-rtt-extension.all@ietf.org, last-call@ietf.org
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Subject: Re: [babel] Secdir last call review of draft-ietf-babel-rtt-extension-04
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Gotcha, then text in Security Considerations sounds like a fine path
forward to me.

On Wed, 11 Oct 2023 at 22:27, Juliusz Chroboczek <jch@irif.fr> wrote:

> >> Uh-huh.  I could be wrong, but I think that Shivan is merely requesting
> >> that we should mention the issue somewhere.  Which I agree with.
>
> > I might be missing something, but the introduction of this document says
> that
> > one of the motivating factors is that VPNs and tunnels can mess up
> routing and
> > RTT calculation helps with that. Are we not talking about end-users'
> VPNs?
>
> The main application are tunnels and VPNs that are building blocks for
> overlay networks.  The overlay networks are part of the provider's
> infrastructure, and in some deployments the location of the routers is no
> more secret than the location of any other infrastructure router.
>
> (The main deployment is the backbone of Nexedi's distributed cloud.
> Nexedi originally intended to deploy their cloud over the public IPv6
> Internet, but found it too unreliable.  For the last 10 years, they have
> been routing their in-cloud traffic using Babel over a fairly dense
> overlay network, and they're very happy with the solution.)
>
> However, there are other deployments, and some of those are intended to
> escape internet censorship, so your concerns are certainly justified.
>
> -- Juliusz
>

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