BCP: Slicing a /32 for an ISP

Nick Hilliard nick-lists at netability.ie
Mon Apr 14 19:19:02 CEST 2008

> Two small contributions I'd like to throw in to the thread. As much as I 
> am a proponent of not using the "abundant" IPv6 address in a profligate 
> manner, even I would suggest using public address for everything, 
> including router loopbacks, etc.


You're not seriously suggesting that using a single /64 for loopbacks on 
your entire backbone or that using /126's on core link point-to-point 
connections is profligate wastage?

I'd agree that there is a whole pile of profligate wastage being promoted 
in v6 assignment strategy right now - particularly in the area of /48's for 
end-users - but scrimping on a small number of /64 is not a sensible 
approach to dealing with address wastage.


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