>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #2828555. --> Reported by: [mcdruid](https://www.drupal.org/user/255969) >>> <p>I spent quite a long time today trying to identify the source of some unwanted redirects which were resulting in a loop of 301s.</p> <p>Eventually tracked them down to CDN's "SEO: duplicate content prevention", but it took a while.</p> <p>It would be useful if - like the redirect module - CDN would emit an extra HTTP header to help identify the source of the redirect.</p> <p>Patch on the way.</p> > Related issue: [Issue #2678374](https://www.drupal.org/node/2678374)