i have a rut955 router and everything set up correctly. I have a problem only with DDNS service update, a similar problem can be found at this link https://community.teltonika-networks.com/22171/ddns-not-updating-on-rut950-and-rut955?show=22171#q22171 but without solution.
Here is a picture of how i set up the DDNS service,
but the problem is:
I have the wan(DSL) as primary connection and Mobile LTE as failover.
The IP should be updated every 5 minutes and if it does not happen then it should be done after 6 minutes FORCE IP Update.
If I have a continuous DSL connection the service will update every 5 minutes correctly, but if the DSL connection is down and LTE is connected the DDNS service will not be updated at all, the Status will stay (as in Picture) at 2020-11-18, 14:08:00 and dont update anything until Reboot. On the Dynu.com website no LTE IP will be assigned.
if I enter it manually then it works again but it should happen automatically because the router is meant to be an OpenVPN server.
P.S. i have on Both side DSL and LTE Public IP Adress.
I need some Help. i must configure that for 5 different Servers (Rut955).