I found out that since VenusOS 3.20 there is support for Wireguard in the kernel. Specifically, the changelog says: - Add wireguard-tools as optional package (opkg) as well as enable the wireguard driver in the kernel.
Has anyone managed to get this working yet? Neither opkg list nor opkg list-installed shows anything about wireguard and opkg install writes error - read only filesystem.
Try GitHub - kwindrem/TailscaleGX: tailscale for Victron Energy GX devices
Tailscale uses Wireguard.
See also Tailscale on Cerbo + subnet router?
I know this is an older thread but just to let you know I wrote some lines of code to simplify usage of wireguard.
You can find it on GitHub - IVI053/venus-wg: Some files to get wireguard up and running on Victron Energy's Venus OS
Maybe it is still useful for you.