That just means that Google's index of URLs contain duplicates, not the Internet itself. Google indexes `/page` and `/page.aspx` as two unique pages with dupli

That just means that Google's index of URLs contain duplicates, not the Internet itself. Google indexes `/page` and `/page.aspx` as two unique pages with duplicate content. All that happened was that the search spider clicked a link to a server-rendered page that can be rendered with a non-canonical link.