Using /126 for IPv6 router links

Owen DeLong owen at delong.com
Sat Jan 23 20:24:26 CST 2010


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 at mironet.ch
> www.mironet.ch
> 





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