[Zope] Restrict users by IP?

I've been trying to restrict users by IP (like in an apache .htaccess file) with Zope. This page, http://www.zope.org/Members/muesli/AuthByAddress, seemed like it would hold the answer. I tried this method but unfortunately I can't add a user with an IP with wildcards to the acl_users folder. E.G. Domain: 128.46.* or Domain: 128.46.*.* Anyone been able to do this? -- Matthew Wirges Credo quia absurdum est.