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Re: [v6ops] AWS ipv6-only features

Lorenzo Colitti <lorenzo@google.com> Thu, 25 November 2021 23:52 UTC

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From: Lorenzo Colitti <lorenzo@google.com>
Date: Fri, 26 Nov 2021 08:51:53 +0900
Message-ID: <CAKD1Yr3jZwORdNsg=FzObaY+7DDGwZR=6EVmu1GjeUgibwTsvQ@mail.gmail.com>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
Cc: Mark Smith <markzzzsmith@gmail.com>, Clark Gaylord <cgaylord@vt.edu>, IPv6 Ops WG <v6ops@ietf.org>
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Subject: Re: [v6ops] AWS ipv6-only features
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On Fri, Nov 26, 2021 at 6:03 AM Brian E Carpenter <
brian.e.carpenter@gmail.com> wrote:

> True, and I can't condone it, but as long as they don't leak it, the only
> operator that can be damaged is AWS itself, so it's an own goal. In fact,
> even if they do leak it, any competent ISP will drop it.
>

The damage is not to operators, it is to application developers. Using
fd00:ec2::/16 pretty much guarantees that there will be collisions within
EC2 itself. If collisions can happen, that means that applications will
need to learn to work with NAT66 or at least with NPTv6. That's pretty much
the worst thing they could have done for IPv6 I think.

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