I tried to install the gateway on my OPNsense router but it gives me the following error.
fetch https://github.com/DefGuard/gateway/releases/download/v0.5.6/defguard-gateway_0.5.6_x86_64-unknown-opnsense.pkg
pkg add defguard-gateway_0.5.6_x86_64-unknown-opnsense.pkg
Installing defguard-gateway-0.5.6...
pkg: wrong architecture: Linux:5:x86:64 instead of FreeBSD:13:amd64
I could force install it but that may bring more unknown problems with it.