To KNOW why this happened, you would need LOTS of information. Obviously routers routed traffic that way. Why?
I would need to look more into it, but I guess it was something like:
* routers choose routes for traffic based on how congested routes are
* chinese routers claim to have huge amounts of bandwidth free
* routers route traffic through chinese routers
It’s an incredibly open system. Not complicated. Maybe IP needs an update to solve this backdoor. I wonder if IPv6 takes care of it.
Start here.
“SHANGHAI, October 12, 2010 – Cisco today held a grand ceremony to mark the 5th anniversary of the Cisco China Research and Development Center (CRDC). Established in 2005, CRDC has become the third largest R&D center for Cisco around the world.”
http://newsroom.cisco.com/dlls/global/asiapac/news/2010/pr_10-12.html