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Re: question about draft-durand-v6ops-natv4v6v4-00



On 18 nov 2007, at 20:32, marcelo bagnulo braun wrote:

  The first drawback is that
  some applications may have a more difficult time going through two
  levels of NAT.

Can you point some examples for this case?

Hm, yes, is anyone has experiences in this area that would be good to know.

I'm assuming it's much worse but I have no actual data.

Do you think that current nat traversal techniques would not work properly if multiple levels of nats need to b traversed?

As far as I've been able to deduce, uPnP and NAT-PMP (not IETF work) that are common in consumer CPEs won't work unless there is one NAT and it's on the local LAN. I could be wrong, though.