[96927] in North American Network Operators' Group
Re: IPv6 Advertisements
daemon@ATHENA.MIT.EDU (Brandon Butterworth)
Tue May 29 15:20:21 2007
Date: Tue, 29 May 2007 18:14:51 +0100 (BST)
From: Brandon Butterworth <brandon@rd.bbc.co.uk>
To: nanog@nanog.org
Errors-To: owner-nanog@merit.edu
> >> I understand the problems but I think there are clear cut cases where
> >> /48's make sense- a large scale anycast DNS provider would seem to be a
> >> good candidate for a /48 and I would hope it would get routed. Then again
> >> that might be the only sensible reason...
> >
> > Don't give people an excuse to deagg their /32
> RIPE may only give out /32's but ARIN gives out /48's so there wouldn't be
> any deaggregation in that case.
That's not what I said. If /48 are accepted by * then people with
a /32 or whatever will deagg to /48.
How much and why they deagg will vary but *hand waving argument* it'll
be a lot more pressure on routing table size than people doing PI
You get one shot at fixed prefix size filters, miss and you'll pay
forever. Which is more scarce, /32's or routing table entries.
brandon
