With the arrival of Kodi 18 Leia also came the ability to access DRM restricted content from servies like Netflix. As of now, the Netflix add-on isn't in the official Kodi repositories, but it's easy enough to install and set up on Debian and Ubuntu, and that includes installations on the Raspberry Pi.
This is a companion discussion topic for the original entry at https://linuxconfig.org/how-to-install-netflix-in-kodi-on-ubuntu-and-debian