Steps to reproduce the issue

Unfortunately i am not sure how to reproduce that on your end.

Though i will describe my findings.

1. My user sessions terminate on their own after a very short period (less than a minute).
2. After debugging, i found that the culprit is the function: Joomla\Session\Validator\AddressValidator::validate()
   Seems like the: $this->session->get('session.client.address') is different to the server's REMOTE_ADDR $this->input->server->getString('REMOTE_ADDR', '')

Hence it throws an exception and terminates my sessions again and again.
Not sure why this happens but i suppose it's related to some reverse proxy between the client and the server.

Any input is welcome!

Expected result

Sessions to follow the session set duration

Actual result

forcible termination

System information (as much as possible)

J4.0.3
Hosted on apache sitting behind nginx.
Cloudflaire's CDN is used as well

Additional comments