Re: [v6ops] Security issues in RFC8754 and related/subsequent drafts?

Brian E Carpenter <brian.e.carpenter@gmail.com> Mon, 25 October 2021 21:44 UTC

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To: Gert Doering <gert@space.net>, Warren Kumari <warren@kumari.net>
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From: Brian E Carpenter <brian.e.carpenter@gmail.com>
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Date: Tue, 26 Oct 2021 10:44:32 +1300
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Subject: Re: [v6ops] Security issues in RFC8754 and related/subsequent drafts?
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On 26-Oct-21 10:31, Gert Doering wrote:
> Hi,
> 
> On Mon, Oct 25, 2021 at 05:20:51PM -0400, Warren Kumari wrote:
>> I somewhat like the idea of having a well known prefix for "limited
>> domains"

fc00::/7 works well. RFC8994 is a worked example.

    Brian

> - if everyone used $prefix, we could default to filtering it on
>> external links, and, just like MPLS/OSPF/IS-IS/<whatever>, consciously
>> decide to allow it between consenting adults. This is far from perfect --
>> it requires more routes in my IGP, etc, but it's better than nothing.
> 
> Indeed, that would be a good start.
> 
> Implementors would have to ensure that decapsulation of "things" only
> happen for packets destined to this prefix, and not "outside of this
> domain" interfaces (IXPs, customer attachment circuits, etc).
> 
> Gert Doering
>          -- NetMaster
>