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Re: Using /126 for IPv6 router links


From: Owen DeLong <owen () delong com>
Date: Sat, 23 Jan 2010 18:24:26 -0800


On Jan 23, 2010, at 4:52 AM, Mathias Seiler wrote:

Hi 

In reference to the discussion about /31 for router links, I d'like to know what is your experience with IPv6 in this 
regard.

I use a /126 if possible but have also configured one /64 just for the link between two routers. This works great but 
when I think that I'm wasting 2^64 - 2 addresses here it feels plain wrong.

So what do you think? Good? Bad? Ugly? /127 ? ;)

Use the /64... It's OK... IPv6 was designed with that in mind.

64 bits is enough networks that if each network was an almond M&M, you would be able to fill all of the
great lakes with M&Ms before you ran out of /64s.

Owen


Cheers

Mathias Seiler

MiroNet GmbH, Strassburgerallee 86, CH-4055 Basel
T +41 61 201 30 90, F +41 61 201 30 99

mathias.seiler () mironet ch
www.mironet.ch




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