Dear team,

After two of my old Deco X50 V2s failed, I ordered new ones and received Deco X50 V1s. These have been updated to firmware 1.6.1.

So far I have been able to use my TP-Link L2TP VPN network without any problems. After replacing the DECOs V2 with V3, it worked for a short time, but after the update it no longer works. I have carried out a complete reinstallation, the TP Link L2TP VPN does not work.

A connection via the OpenVPN access is no problem, but I would need the L2TP access.

It could be that the problem only occurred when DOH & DOT was activated, but this was deactivated again and was not activated again after the new installation (if that had any meaning).

Some information about the network, maybe the problem is here (and I don't understand it):

ISP: Dynamic IP
TP-Link DDNS is activated, it works with OpenVPN

Internal network:
192.168.1.1 router, same address range for the other devices (192.168.1.X)
Subnet mask 255.255.255.0

Network VPN:
L2TP client IP 10.9.0.11-10.9.0.20

Maybe someone can help me get my normal VPN access back?

Thank you!

Mat