Hyperlink, IP address versus network path

[Jen]

Hello, I have a template in Word 2007, and if I create a hyperlink to
another document with the link using the ip address, ex:
\\10.0.0.4\users\test.docx, the link will work while the template is open for
editing. But when I save the template and then open as a document the link
will not work.

If I change the link to the mapped path, s:\users\test.docx, then it will
work. What would cause it not to work using the ip address?

Thank you.