internationalized pages are shown with and linked to the same domain

I set up a test scenario.. (info: en. about = fr. qui = de. wer)

I used a dns based language selection and translated an article located in http://en.abc.com/about to http://fr.abc.com/qui and to http://de.abc.com/wer.

Strangely I an see the about page in http://fr.abc.com and http://de.abc.com too which most people won't want to happen.

Can this be somewhat fixed at the url aliasing thing? I suggest the code to redirect the user from http://en.abc.com/qui to http://fr.abc.com/qui.. That would simply be great...

In addition to that, http://en.abc.com/about page links to http://en.abc.com/qui and http://en.abc.com/wer as French and German translations respectively.

Can't those links be moved to their own sub-domains from http://en.abc.com/qui and http://en.abc.com/wer to http://fr.abc.com/qui and http://de.abc.com/wer respectively?