IPv6: numbering of point-to-point-links

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Hi all.

 

While reading up on IPv6, I've seen numerous places that subnets are now
all /64.

I have even read that subnets defined as /127 are considered harmful.

 

However while implementing IPv6 in our network, I've encountered several
of our peering partners using /127 or /126 for point-to-point links.

 

What is the Best Current Practice for this - if there is any?

Would you recommend me to use /64, /126 or /127? 

What are the pros and cons?

 

 

-- 

Best regards,

Lasse Jarlskov

Systems architect - IP

Telenor DK

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