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[108.28.83.185]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-530ca4e66adsm6804791cf.22.2026.09.10.17.37.24 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 10 Sep 2026 17:37:25 -0700 (PDT) From: RJ A Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3864.700.51.1.1\)) Date: Thu, 10 Sep 2026 20:37:14 -0400 References: <992E4A4E-9471-44DD-A333-B1151FEC20E5@gmail.com> To: deepspace@ietf.org In-Reply-To: <992E4A4E-9471-44DD-A333-B1151FEC20E5@gmail.com> Message-Id: <1AFC3559-4ABE-4D6B-B180-A9150B945844@gmail.com> X-Mailer: Apple Mail (2.3864.700.51.1.1) Message-ID-Hash: 2PJXL6HQXMISYKN5PEC4A36OQVK7VON7 X-Message-ID-Hash: 2PJXL6HQXMISYKN5PEC4A36OQVK7VON7 X-MailFrom: rja.lists@gmail.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.9rc6 Precedence: list Subject: =?utf-8?q?=5Bdeepspace=5D_Re=3A_Understanding_the_difference_in_aggregation_?= =?utf-8?q?between_a_single_and_multiple_RIR_model?= List-Id: IP protocol stack in space Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: > On Sep 9, 2026, at 11:33, Remco van Mook = wrote: >=20 > 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. I do not believe =E2=80=9Ctopology is orbital mechanics=E2=80=9D is true = for IP routing. Yakov=E2=80=99s law is specifically about the IP = routing topology, not about either geography on earth or orbital = mechanics in space. =20 As a contrived counter-example, communications between Venus and Mars = could go directly between those planets without needing to traversing = Earth, even though Earth=E2=80=99s orbit is at a distance farther than = Venus from the Sun and closer than Mars from the Sun. Yours, Ran