Connection reset by peer when omd is running

Troubleshooting
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CMK version: 2.1.0p14
OS version: Debian GNU/Linux 11 (bullseye)

Error message: none i found

My CheckMK Server randomly started to reset and close established connections. I was looking in the syslog, dmesg and all omd logs for errors. Also did some tcpdumps on the Proxmox Host where the CheckMK Server is hosted on. The Server resets every connection on like every Port. Doesnt matter if it is ssh or https. Didn’t check other protocolls since there arent any other ones i actively use.
Today i found out that when i stop the omd Server (omd stop) the disconnects just stop. I cannot explain why because i couldnt find anything in the logs and all the connections i saw said “connection reset by peer” which doesnt sound right when testing from different machines and it stops when i stop the omd Server.

Do you have any Ideas what the problem could be or how i can debug this?

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