Manual:$wgDisableHardRedirects

Details
Disable redirects to special pages and interwiki redirects, which use a 302 and have no "redirected from" link.

Interwiki redirects are, in the default configuration, {redirects>Special:MyLanguage/Help:Redirects|redirects to other wikis via an interwiki prefix set as local (see interwiki>Special:MyLanguage/Manual:Interwiki#Field documentation|Manual:Interwiki#Field documentation).