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Re: [homenet] homenet-prefix-assignment update - behaviour at one ISP

Mikael Abrahamsson <swmike@swm.pp.se> Wed, 08 October 2014 13:14 UTC

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Date: Wed, 08 Oct 2014 15:14:10 +0200
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Alexandru Petrescu <alexandru.petrescu@gmail.com>
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Subject: Re: [homenet] homenet-prefix-assignment update - behaviour at one ISP
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On Wed, 8 Oct 2014, Alexandru Petrescu wrote:

> I didnt know that?  Can you elaborate?  Is it that I can not set radvd 
> with A=1 and plen=63?  Or is it that the Host receiving this RA will not 
> know what do with this RA?

https://datatracker.ietf.org/doc/draft-ietf-6man-why64/?include_text=1

"As a result, RFC 4291 describes a method of forming interface
    identifiers from IEEE EUI-64 hardware addresses [IEEE802] and this
    specifies that such interface identifiers are 64 bits long."

If you set anything different than /64, then A=1 is meaningless and the 
host won't form SLAAC based addresses based on A=1.

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

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