

I don’t think so, I’m not trying to do port forwarding or anything like that, I just want the secondary router to be treated like a regular client by the ISP router (that only sends traffic to the VPN). Thanks for the rec though, if I can’t get the native client working I’ll give Gluetun a shot.
EDIT: I added some rules for UDP ports 1194 and 5060 to the ISP router just in case there was some back traffic that wasn’t getting back to the client, restarted the server and same result, Host Unreachable :(


They’re both functioning as routers at the moment, the topology is:
Both routers are handling DHCP on their own LANs, and if the OpenVPN service is stopped, clients connected to the OpenWRT router can connect to the internet without any apparent issue.