[85855] in North American Network Operators' Group

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Re: IPv6 daydreams

daemon@ATHENA.MIT.EDU (David Conrad)
Tue Oct 18 11:15:46 2005

In-Reply-To: <Pine.LNX.4.63.0510180637080.3396@sheen.jakma.org>
Cc: David Barak <thegameiam@yahoo.com>, nanog@merit.edu
From: David Conrad <drc@virtualized.org>
Date: Tue, 18 Oct 2005 08:11:29 -0700
To: Paul Jakma <paul@clubi.ie>
Errors-To: owner-nanog@merit.edu



On Oct 17, 2005, at 10:39 PM, Paul Jakma wrote:
>> Wrong issue.  What I'm unhappy about is not the size of the  
>> address - you'll notice that I didn't say "make the whole address  
>> space smaller."  What I'm unhappy about is the exceedingly sparse  
>> allocation policies
> You can allocate to 100% density on the network identifier if you  
> want, right down to /64.

I believe the complaint isn't about what _can be_ done, rather what  
_is being_ done.

> The host identifier simply is indivisible, and just happens to be  
> 64bit.

I've always wondered why they made a single "address" field if the  
IPv6 architects really wanted a hard separation between the host  
identifier and the network identifer.  Making the "address" a  
contiguous set of bits seems to imply that the components of the  
"address" can be variable length.

Rgds,
-drc


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