Drupal 8 redirect node/id to node/path-auto-alias duplicate content

Hello,

I`ve installed on the latest Drupal 8.x (8.4.2)  Pathauto and Redirect: I`d like to be able to have my contents available only using the automatic path generated by Pathauto, but I can still reach all my nodes using both the alias created by pathauto and the usual node/id, wich is bad for SEO ( duplicate content ) and is confusing for the users.

In a lot of nodes I have links to other nodes in the form of node/id, those links should be redirected to the pathauto generated url, but they are not. Am I making some mistake?

Drupal version: 


Source: https://www.drupal.org/taxonomy/term/22/feed