@Clive_A Thank you very much for your answer. That option is not available on my router.

Hello, first of all, thank you for your help. I have an IPSEC site-to-site VPN set up (10.0.X.X/16 site 1- 192.168.88X/24 site 2) this VPN works correctly. I have configured a site-to-user L2TP VPN...