[Tech] Proposal: UP&P

[Michael Rogers]

Matthew Toseland wrote:
> Some feedback from #azureus :
> 
> <The_8472> nat traversal + UPnP + NAT-PMP can solve about 80% of the
> NATed problems
> <toad_> you have any quantitative numbers btw?
> <The_8472> nope
> <The_8472> it's 2nd-hand info i got from the devs
> 
> Anyone got anything more concrete?

There are some useful stats in this paper:
http://nutss.gforge.cis.cornell.edu/pub/imc05-tcpnat.pdf

Here's the raw data:
http://www.guha.cc/saikat/stunt-results.php

It looks like about 70% of deployed NATs are full cone, so 81% of 
NAT-to-NAT connections should work without UPnP, NAT-PMP or manual port 
forwarding.

Cheers,
Michael