Re: Non routable IPv6 registry proposal

John R Levine <johnl@taugh.com> Thu, 21 January 2021 00:16 UTC

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Date: 20 Jan 2021 19:16:30 -0500
Message-ID: <d4b56f13-b387-8663-81b3-38544ce9dcb2@taugh.com>
From: "John R Levine" <johnl@taugh.com>
To: "Fernando Gont" <fgont@si6networks.com>, "IETF general list" <ietf@ietf.org>
Subject: Re: Non routable IPv6 registry proposal
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References: <20210120211046.074FE6BC171B@ary.qy> <6794f7c4-7a37-7676-c245-d33a84384280@si6networks.com>
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> No. Collissions are actually almost guaranteed (birthday paradox).

When I do the birthday paradox calculation, I find that the chances that 
100,000 random numbers each 40 bits long are all different is about 95%. 
I'll take those odds.

Regards,
John Levine, johnl@taugh.com, Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly