[p2p-hackers] Work on NAT-friendly DHTs?

[Philip Matthews]

I am wondering if anyone is aware of work on NAT-friendly DHT  
algorithms?
In other words, a DHT algorithm that works with the peers are located  
behind NATs.

 From what I have seen. most DHT algorithms assume that any peer is  
directly reachable
from any other peer, which is not true when peers are located behind  
NATs.
Both Chord and Kademlia, for example, seem to make this assumption.

- Philip