[6bone] Re: [ipv6-wg@ripe.net] Update on IPv6 filter recommendation

[Gert Doering]

Hi,

On Mon, May 12, 2003 at 11:40:30AM +0300, Pekka Savola wrote:
> > The new thing is that inside 2001:500::/29, the "strict" list is now
> > permitting /48s.  This is because 2001:500:: is used for ARIN 
> > microallocations, and /48s are the "normal" allocation boundary in there.
[..]
> There is a danger that this uncoordinated madness will spread.  

I didn't imply that I *like* this microallocation policy - I think it's
the wrong way to go.  We have a root name server policy, and the individual
regions should not do "other" microallocations, especially not for the
root.

Nevertheless it is happening, and I am just documenting things (right
now).

> There has
> been a proposal to extend the microallocation policy, but luckily enough
> it has been shot down.

Could you give me some more background on that?  What was the proposal,
and why was it shot down?

> IMO, you should only let in 2001:500::/32 upto /48 if you really have to,
> and not the other blocks in the /29 (especially, don't let through
> exchange point addresses, under 2001:504::/32). Please refer to:  
> http://www.arin.net/registration/ipv6/micro_alloc.html

Thanks for pointing that out to me.  I will update my documentation 
accordingly. (*done*)

Gert Doering
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