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Re: [homenet] Let's make in-home ULA presence a MUST !?

Sander Steffann <sander@steffann.nl> Wed, 15 October 2014 11:14 UTC

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From: Sander Steffann <sander@steffann.nl>
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Date: Wed, 15 Oct 2014 13:14:24 +0200
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References: <72CC13D1-7E7A-4421-B23E-16D8FFAEEB58@darou.fr> <CAAedzxp1R-C5E9RJVMVLRJxPc0w4zooPtqnvWK9eggpZu4=xtg@mail.gmail.com> <alpine.DEB.2.02.1410141020360.30853@uplift.swm.pp.se> <C52D3324-3015-45E0-88CF-D2A778D246B8@iki.fi> <CADhXe52iH_Abh3iZvpgQQYJF_FzbKkhNwzwjkcDt-DJA3RL+VA@mail.gmail.com> <70C2B2B2-A19A-4730-AB51-1EF26448445B@fugue.com> <CADhXe533umX9Q3NSbEktjcj8mBatXkDmRQKz0hOkGriBSX0t4g@mail.gmail.com> <94990F79-439A-4820-B03B-BFEAB01AA515@fugue.com> <CADhXe50DoZjjoG5tfidcGgtXx1TFyYECZyzeWmQstsT3=HPyaA@mail.gmail.com> <CAA93jw4qbzcv5zn-9gG=1dzBW6R2bOeHRnKOpCUCwdDdW6BY+A@mail.gmail.com> <CADhXe51Zv9-p_+FPZMnXTSMastjkPNhUGfnwuzw_D=aOAgWuMA@mail.gmail.com>
To: James Woodyatt <jhw@nestlabs.com>
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Cc: HOMENET Working Group <homenet@ietf.org>
Subject: Re: [homenet] Let's make in-home ULA presence a MUST !?
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Hi James,

> Consider a hypothetical router that has the regular automatic default behavior of commissioning a new standalone network while discovering any existing networks that it already possesses the credentials to join. Now consider what happens when devices of this category are continually losing and regaining their connectivity with the rest of the wireless network in the home. Let's imagine this happens many times per hour. How many days does it take before all your constrained-resource hosts have no space left in their route tables for all the deprecated but still valid ULA prefixes?

Does it have to be a *new* standalone network (ULA prefix)? The router could just generate a ULA prefix once and reuse it whenever it needs to, right? Generating a new prefix on every connect/disconnect would indeed cause a mess...

Cheers,
Sander

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