[Zope] Restrict users by IP?

[Matthew L. Wirges]

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.