@gpatel-fr
VPN or OVPN, if it does not route to the required network, it will be on the router side. It depends on how you are able to experiment and what your options are. If you have the option to build a router from a PC, I personally have had good experience (and tested functionality with "UT") with https://www.ipfire.org. It is Linux, so a lot of things can be configured there. / Unlike a router—a company, a brand, a box where even the instructions tend to be brief....
Translated with DeepL.com (free version)

