[wp-hackers] canonical not enforced

[Kevin Newman]

Hi,

I recently added a url redirect to my site (unfoc.us for www.unfocus.com).

www.unfocus.com is the canonical - and if I put vanilla unfocus.com the 
normal cononical enforcement works. For some reason unfoc.us does not 
get properly redirected to to the canonical url - not even if I use a 
shortlink (I have permalinks enabled).

So this works correctly:
http://unfocus.com/?p=4116

But this does not:
http://unfoc.us/?p=4116

Is this a bug in core? Or have I just set something up incorrectly?

Kevin N.