Re: draft-ietf-v6ops-nat64-pb-statement-req-00 - are changes in dualstack hosts acceptable or not?

[Rémi Denis-Courmont <rdenis@simphalempin.com>]

Le vendredi 25 juillet 2008 18:01:38 marcelo bagnulo braun, vous avez écrit :
> Now, the nice thing about requirements is that when you read
> them into detail, they can be interpreted in both ways.

No. A dual-stack host is NOT a v4-only host. If you read the requirements to 
the letter, nothing excludes changes to dual-stack nodes. But I humbly think 
the real question is not what the current requirements say.

> So, the question is: is a dual stack host a v6 host (i.e. changes are
> acceptable) or is it a v4 host (i.e. changes are not acceptable)?

Regardless of the current requirements, I would argue it is not acceptable 
that dual-stack nodes need to be modified, for the exact same reason as it is 
not acceptable that IPv4-only nodes need to be modified: deployment would be 
highly impractical.

-- 
Rémi Denis-Courmont
http://www.remlab.net/