We use the RUT240 router with almost all German network operators. Since firmware version 14.3 we have the problem that the mobile data connection is interrupted after different runtimes. Then the only thing that helps is restarting the router, either via SMS or via the web interface. Since the restart via SMS works without any problems, it can be concluded that the router is still connected to the mobile network and only the data connection is interrupted. The problem still exists with version 14.4 and also with the current RUT2_R_00.07.01 firmware.
So far I've solved the problem with a ping restart. Nevertheless, I find it very noticeable that the router has regularly interrupted the mobile data connection since the update.
Is the problem known or is there already a solution?
We use a custom APN and not the auto APN.