As detailed on their own forums here...

R6Vegas2_Fix.zip is the same as the ReLoaded no-dvd crack - Topic Powered by eve community

It appears that to fix copy protection issues in the Direct2Drive version of Rainbow 6: Vegas 2, Ubisoft saw fit to release a No-CD/DVD patch which had the crack group "Reloaded" tags all over it.

So a software company using an illegal crack to cover up their own mistakes? Who would have thought!