Model :

Hardware Version : Not Clear

Firmware Version :

ISP :

Hello

I have set VPN connections using TP-Link TL-WR842ND successfully before using different ip groups in both ends. However when I try to configure a connection in same ip group I am getting an error.

My main router is set to 192.168.2.1 with subnet mask of 255.255.255.128
The secondary router is set to 192.168.2.129 with subnet mask of 255.255.255.128

Here is my vpn configuration:




And this is the result:




Is there something wrong with my configuration?
Is it possible to create a vpn connection in same ip group ie. 192.168.2.xxx

Thanks for replies