Another update and hopefully the solution for my issue:   As mentioned above, the issue reproducedable occured, when connecting with the Hyper Backup Client via rsync to Unraid. I guess because of failing reverse lookups the avahi-daemon used all the ram and most of the CPU:   Feb 10 00:55:03 Dockerbox rsync[2997]: connect from 192.168.10.2 (192.168.10.2) Feb 10 00:55:03 Dockerbox rsyncd[2997]: name lookup failed for 192.168.10.2: Name or service not known Feb 10 00:55:0
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