[147918] in North American Network Operators' Group
Re: subnet prefix length > 64 breaks IPv6?
daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Tue Dec 27 18:37:06 2011
To: Glen Kent <glen.kent@gmail.com>
In-Reply-To: Your message of "Wed, 28 Dec 2011 04:58:19 +0530."
<CAPLq3UOF0WzrYe0ak94u=Hgd9rM-Wo=_OygMHDwroKt7Q5zGfA@mail.gmail.com>
From: Valdis.Kletnieks@vt.edu
Date: Tue, 27 Dec 2011 18:35:42 -0500
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On Wed, 28 Dec 2011 04:58:19 +0530, Glen Kent said:
> I had assumed that nodes derive their link local address from the
> Route Advertisements. They derive their least significant 64 bytes
> from their MACs and the most significant 64 from the prefix announced
> in the RAs.
No, on Ethernet-ish networks the link-local is derived from an 'fe80::' and the MAC.
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