I've had this problem for some time and I'm after any tips.
I've got OpenVPN working from site to site with no problems but I want to setup a openvpn client to route to a Gateway. (see diagram)

It works perfect in one direction but in the other direction blue works but the green section is blocked or is not being forwarded.
any tips on how to fault find the problem?
I'm wondering if the gateway feature might help?
https://github.com/ericpaulbishop/gargoyle/pull/731