I can't reach my public IP from my local network, that's a problem with the router loopback.
I tried using ARP spoofing and "man in the middle" attacks to sniff the traffic between the DS and the router and it worked, but it calls HTTPS servers too often and when it does so while it has a poisoned ARP cache (ie. the DS thinks my computer is the router), the HTTPS certificates become invalid and the connection hangs (Cain&Abel automatically replaces the certificates with custom ones and I can't prevent it).
However, I was able to sniff some requests, but it is useless now that almost everything has been reverse-engineered.
If I am understanding you correctly, you need to be able to hit an external IP for this new GTS system. I would recommended if you can to either try upgrading your router with a DD-WRT firmware if at all possible (this would fix your loopback issue), or if you have a smartphone (iPhone, Android, *not sure about blackberry*) you can get a wifi tether application that will let you get your DS online no problem.
5th Gen GTS Research
in RAM - NDS Research & Development
Posted
If I am understanding you correctly, you need to be able to hit an external IP for this new GTS system. I would recommended if you can to either try upgrading your router with a DD-WRT firmware if at all possible (this would fix your loopback issue), or if you have a smartphone (iPhone, Android, *not sure about blackberry*) you can get a wifi tether application that will let you get your DS online no problem.