HQToast

Well I think I found my problem... And I do feel quite stupid now for basically looking at it and not really using my brain to process the obvious problem. It is the "CA Backup / Restore Appdata" plugin and it is doing exactly what I told it to do 2 years ago. It even tells you what it is doing every time you check the settings. Well. And in the settings the again obvious trigger for the problem is right there. Weekly backup at 4am in the morning. I just found it so I can not 100% say that this is the problem but looking at it I am pretty sure that this is the solution for my specific problem.

Interesting idea. I was quite excited for a moment because I have not even thought about DHCP possibly causing this. Unfortunately this does not seem to be the problem. I am using a range of static IPs for all my Server stuff and have a dedicated space for DHCP addresses which is not even close to being full, causing problems with the allocation. So in theory I can't see a reason why it would cause the problems. But just to be sure I will decrease the lease time and address space dramatically to try causing allocation problems intentionally. Lets see if this could actually be a cause 👍

Thank you very much for the update! Makes me feel less like I'm the only one with this weird problem. I also know now that the timing has to have something to do with it. Otherwise my server wouldn't do the exact same thing at basically the same time. (Never 100% checked the timing but I noticed that it had to be between like 2-4 in the morning) If I find something on my system I will update here.

It seems like I have the same problem you have. Not every night but like every 2 or 3 days my docker containers loose connection for a short time. For me I noticed it when my bigger copy jobs on Krusader did not finish and the UI reset itself to the default location the next morning. I know the post is a bit old now but as it is the only one with a similar problem I found I would like to ask if you found a solution for the problem?