I think you should only add ping watchdog function and problems with lte connection will be resolved.

Hello, I have an ER605 that works as L2TP server, and i want open some ports that foward to a L2TP client but it doesn't work, otherwise port forwarding to local PC works fine, all traffic from/to...

@Kevin_Z No firmware for MR200 v5.2/5.3?

@Flysky I think no, I tried MAC clone too, enable Get IP using unicast DHCP, changing Negotiation mode from Auto to 1000M full duplex but they didn't help

@Flysky I had exactly same problem (ISP Vodafone Czechia, exUPC network, modem Vodafone Station TG 3442). Putting a switch between the modem and router resolved the issue.

@PackersOwner too many bugs so they removed it. After trying 2.2.0, 2.1.3 and 2.1.4, all of them have problem with connections between VPN clients so at the moment I'm sticking with 2.1.2. If you...