How to put clients on server side onto VPN LAN

[almostdavid]

I have a setup where I am using OpenVPN as a S2S vpn. I currently have it set to bridge and my three remote routers connect and get put onto the VPN subnet(10.8.0.0/24) and all works as intended. I need to take some devices that are directly connected to the Main router(OpenVPN server) and are on the LAN of that router 10.1.10.0/24 and put them on to the LAN 10.8.0.0/24(VPN) for l2 discovery reasons. Does anyone know how I could achieve this?

I have attached a diagram showing what I am talking about.

[almostdavid]

As a solution I ended up removing the eth0.1 interface(switch ports) and WLAN interfaces from the LAN interface and bridged them onto the OpenVPN interface.