Vpn l2 passthrough with AR-300M

Hello, anybody knows if it is possible to make a VPN L2 passthrough with a couple of AR-300M routers? I’d like to put the remote site on the same LAN of the central one (same address, DHCP, etc). I’ve read about the possibility via OpenVPN but how can I configure it on GLiNET routers…thank you

Do you want to combine a couple of AR-300M routers (they are at different locations) to a LAN ?

Not exactly, I’d like to configure the first glinet as l2 bridge and let remote glinet accessing the same LAN behind it (such as the configuration one armed vpn concentrator by Cisco Meraki)…