[deepspace] Re: Understanding the difference in aggregation between a single and multiple RIR model
Michael Richardson <mcr+ietf@sandelman.ca> Wed, 09 September 2026 20:54 UTC
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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Remco van Mook <remco.vanmook@gmail.com>, deepspace@ietf.org, Warren Kumari <warren@kumari.net>, Tony Li <tony.li@tony.li>
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Subject: [deepspace] Re: Understanding the difference in aggregation between a single and multiple RIR model
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Remco van Mook <remco.vanmook@gmail.com> wrote:
> There is a third construction, in which the dilemma does not arise:
> make aggregation a property of the address format. If an address
> derives from where something is, then things in one place share a
> prefix because they are in one place. The colony is one prefix because
> it is one colony: whichever agencies built it, whoever they asked,
> including nobody. One route per body falls out of the same arithmetic,
> with no registry consulted below the initial designation.
Sure.
I'm not sure this is different than delegating directly from ICANN to the
_Mars RIR_, (once such a thing exists).
> Tony quotes Rekhter's law, and I'd finish the thought: in space,
> topology is orbital mechanics. Addressing that follows topology is
> addressing bound to trajectories.
So, orbital elements as part of the prefix ? :-)
I'm reminded of: https://datatracker.ietf.org/doc/draft-hain-ipv6-geo-addr/
> I wrote a problem statement along these lines earlier this year
> https://datatracker.ietf.org/doc/draft-vanmook-expanse-problem-statement/
> , and a strawman architecture exists as input for whatever effort forms
> here. For calibration, the initial IANA designation it needs is a /14:
> smaller than either proposal spends on Mars alone.
Interesting.
Nice use of EXPANSE acronym. Very nice. I like that you've called out:
Traffic tromboning: Architectures that implicitly treat Earth as the
default interconnection point force space-to-space traffic through
terrestrial gateways. At interplanetary distances a tromboned
path is not an inefficiency measured in milliseconds but in tens
of minutes per detour, and in some geometries in availability
itself.
I also like how you've linked this:
topological adjacency changes continuously, relative velocity
constrains contact windows and link scheduling, and binding
addresses to orbital position repeats, at solar-system scale, the
locator/identifier conflation the Internet has struggled with for
decades.
I found your document to be a useful read.
Does the IETF need to push this to RFC before it can be considered by other
stakeholders? I hope not.
} This document makes no requests of IANA, which is precisely the
} point: future documents should make well-formed ones.
!!
> Happy to share once we sort out a forum. I was actually looking forward
> to the interim meeting as it was communicated to people within the
> address policy community, which is (apart from some notable exceptions)
> mostly absent from this list.
Yes, I also am disappointed that this option was cancelled.
--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
-= IPv6 IoT consulting =- *I*LIKE*TRAINS*
- [deepspace] Understanding the difference in aggre… Remco van Mook
- [deepspace] Re: Understanding the difference in a… Michael Richardson
- [deepspace] Re: Understanding the difference in a… Remco van Mook
- [deepspace] Re: Understanding the difference in a… RJ A
- [deepspace] Re: Understanding the difference in a… Remco van Mook