Last modified: 2012-01-18 17:38:54 UTC
Created attachment 9053 [details] Demonstrating the incorrect link. When you rollback some edits by an any user to an anonymous user's edit, the link is to User:<ip>, instead of Special:Contributions/<ip>. This only happens to the edit summary, on the post rollback page, the IP address is linked correctly. Attached is an image demonstrating the problem.
I have tested this with the latest version of the code, and when it rollbacks it links to the Special:Contributions page.