I saw this tip on MacFixIt and it was just what I had been looking for. In other words this works.
We have had a problem where, when selecting the "Connect to Server" command, we get multiple listings for the very Mac we are using, all with different IP addresses. In one case, the IP address was one we could never even recall using. Mark Delfs offered this solution, which worked:
Mac OS X Hints
http://hints.macworld.com/article.php?story=20011005091055483