I was adviced to reboot to factory as I could not see packages like 'DDNS'. Before the reset I saved the configuration.
One the router was up with its default settings, I was able to download the packages DDNS as well as TCPdump. Once these two packages were installed I restored the configuration from the backup which I made prior the reset.
But after the config (re)load the router rebooted every x minutes, from the system log I found something with memory at that time TCPdump was enabled. As soon as I could after the reboot I disabled the TCPdump. After that it seems to be more stable but even than the router goes rebooted again after some hours.
The strange part is, that in the past (prior reset to factory) I never faced this issue and the router stayed always up only 2 a 3 minutes a day not reachable due to a DHCP renewal.
Can you help me with this?
I created a troubleshoot file which has been attach to this thread.