* Iljitsch van Beijnum:
On 14 feb 2008, at 21:49, Florian Weimer wrote:
The prevailing assumption is that IPv6 end nodes will be globally
addressable for practical purporses. I think this is a very unlikely
outcome.
Are you saying that there will be IPv6 NAT?
Is a node globally adressable if it never receives any packets you (or
others) send? From an upper-layer protocol point of view, I'd say it
isn't.
And that we should design protocols running on top of IPv6 to take NAT
into account?
These protocols need to take into account that if there's a (virtual)
connection between two hosts, it's still not possible to establish
arbitrary other (virtual) connections between them.
If yes on both, how can we do that without a NAT specification so that
the IETF can design protocols to work with NAT and vendors can build
NATs that work with IETF protocols?
I think the NAT question is a bit of a red herring. I suppose that
anything that is broadly NAT-compatible increases its chances it will
work well on actually deployed networks, be it IPv4, IPv6, or something
else. However, I don't think we will see as much highly dynamic NAT
(including port translation) on IPv6 as on IPv4.
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