@Kevin_Z thank you foru your response. The network diagram is ais simple as it can be. Nothing special. Devices connected to Archer WiFi, Archer connected to DSL. I must have overlooked the settings...

Good evening, since the WiFi router at my paren's house was replaced by a TP-Link Archer VR990v, I have no longer been able to use IPsec based VPNs. With the old router it used to work. At my home...