Hello,

I've decided to use one OC200 for multiple locations, and create additional sites that would connect to it via IPsec/L2TP tunnel.
I've established VPN tunnel (Client-Server) to my primary location and enabled DMZ towards OC200 from WAN and I see devices that are ready for adoption, sadly it's not working with error:
"Device adoption failed because the device does not respond to adopt commands."

Here is my network diagram:

Route on Primary

NAT on primary

Route on remote

NAT on remote

VPN tunnel