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

Mikael Abrahamsson <swmike@swm.pp.se> Fri, 17 October 2014 06:45 UTC

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Date: Fri, 17 Oct 2014 08:45:23 +0200
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Lorenzo Colitti <lorenzo@google.com>
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Subject: Re: [homenet] Let's make in-home ULA presence a MUST !?
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On Fri, 17 Oct 2014, Lorenzo Colitti wrote:

> You keep mentioning this, but you're incorrect. Even if the ISP 
> flash-renumbers, hosts will not lower the lifetime of their IP addresses 
> below 2 hours, per RFC 4862.

Where in RFC4862 is this described?

A lot of time was spent on RF7084 and its predecessor, making sure it was 
a requirement to send RAs with zero-lifetime for the on-link prefix if the 
delegated prefix went away, so hosts would stop using it very quickly.

So my expectation if the ISP flash-renumbered (ie reset the PPPoE session, 
the physical uplink went down or the DHCPv6-PD lease expired), an RFC7084 
compatible router would send out RAs with zero-lifetime and hosts would 
immediately stop using these IPs for new connections. Am I wrong, and 
where can I read up on the behaviour you're describing?

-- 
Mikael Abrahamsson    email: swmike@swm.pp.se

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