W3 validator breaks W3 link checker!

Thanks for making the on-linevalidator available, our 'standard'
template includes a discrete link to http://validator.w3.org/check/referer.

But when I manually run checklink on such a page the validator sends
back a redirect to http://validator.w3.org/ (presumably because it
can't tell which page the request comes from) which checklink then
complains about!

Could the validator check the user agent for W3C-checklink and if so
just return something harmless?

Thanks

John