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[arch-d] Re: IP Address Geolocation Considered Harmful

Phillip Hallam-Baker <phill@hallambaker.com> Mon, 23 March 2026 17:46 UTC

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From: Phillip Hallam-Baker <phill@hallambaker.com>
Date: Mon, 23 Mar 2026 13:44:54 -0400
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To: Tony Li <tony.li@tony.li>
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CC: John Levine <johnl@ietf.email>, architecture-discuss@ietf.org, john.mattsson@ericsson.com
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Subject: [arch-d] Re: IP Address Geolocation Considered Harmful
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On Mon, Mar 23, 2026 at 1:31 PM Tony Li <tony.li@tony.li> wrote:

>
>
> > On Mar 23, 2026, at 9:45 AM, John Levine - johnl at ietf.email <
> mailforwards@cloudmails.net> wrote:
> >
> > How do you plan to do routing without some sort of geographic
> aggregation?
>
>
> Routing depends on topological aggregation, not geographic aggregation.
>

Agree but I think we need to go a bit further as what people are doing
currently is to use the habits of ISPs in domain allocation to infer
geolocation.

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