Aus SubmersWiki

A so called double redirect occurs when one attempts to create a redirect to a page that is also already a redirect. Such redirects will not work since multiple directing will not follow through to the end of the chain.

Users will instead just be presented with the relevant link, which is a view of the redirect page. This is a deliberate restriction, partly to prevent infinite loops and also to keep things simple. It serves the purpose of preventing the creation of rather unpleasant and complicated tree of redirects!

However this does mean that you should look out for double redirects and eliminate them by changing them to be 1-step redirects. This is mostly necessary only if you do a significant page move.

Use the 'what links here' toolbox link to find double redirects to a particular page, or use Special:DoubleRedirects to search through the entire wiki.