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Re: Generic anycast addresses...

Ted Lemon <mellon@fugue.com> Wed, 29 May 2019 23:10 UTC

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From: Ted Lemon <mellon@fugue.com>
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Subject: Re: Generic anycast addresses...
Date: Wed, 29 May 2019 16:10:18 -0700
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To: Dave Thaler <dthaler@microsoft.com>
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On May 29, 2019, at 3:58 PM, Dave Thaler <dthaler@microsoft.com> wrote:
> See RFC 7094 (https://tools.ietf.org/html/rfc7094 <https://tools.ietf.org/html/rfc7094>) for history and discussion.

Unfortunately this document doesn’t really talk about the use case I’m referring to.   We did talk about doing this for DNS and for PCP, but neither of those proposals ever got the point of actually wanting to do something.   I don’t think what I’m talking about is novel, but it appears that not only hasn’t it caught on, but it’s not even really talked about in the places where one might wish for it to be talked about.

RFC 7094 seems to be mostly focused on what can go wrong if you try to deploy internet-wide services using anycast, which is an interesting problem, but essentially orthogonal to what I’m describing, which is more like an automatic zero-packet service discovery mechanism, and which I would expect to be constrained to scopes on the site side of site edge routers.

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