Nevertheless I tried "several" releases which looses connection after roughly 1-3min with the same configurations. The following releases I tried (and failed):
03-24-2021-r46166
03-09-2021-r45955
02-28-2021-r45863
03-12-2021-r45993
Do you have an idea what has been changed in the firmware which creates this issue?
Additionally on the currently running firmware (r42872 ) I have the issue that a reboot alway's creates a software bug & I need to disconnect the power / POE ethernet cable to restart proper the device.
Based on the issues I also had but not so frequently with the I swichted back to a quite old firmware as a trial, which seems to be a very stable solution for the job the device should do.
currently applied & very stable working Firmware: DD-WRT v24-sp2 (10/27/14) std