Quote Originally Posted by lupin View Post
I run double and triple NAT at home without any noticeable problems (perhaps some slowdown but definitely not a complete breakdown of communication). I have run streaming video, torrents, chat, xbox live, etc with no issues. As long as none of your assigned ranges overlap inappropriately there should be no game stopping issues. It definitely shouldn't break a ping. There might be some issues with certain VPNs but even single NAT can break some of them.

Id love to know where the iPrimus support people got the idea that double NAT is not supported by design. Perhaps they just made it up.
I agree but with one caveat. I have seen double NAT break ICMP traffic in certain configurations.