I have the same issue.
No clue where or WHAT is using the same IP.
I wish there was a script, plugin,.. that said, THIS exactly THIS thing is causing you problems, so change its IP or SOMETHING !!!!
Does the new version 7 beta3 offer anything new regarding this, and or. is there some plugin created to this effect possibly?
Or is it still a lot of fiddling involved (as in not user friendly)?
There should be a 3 tier storage solution in Unraid from the beginning.
Tier 1: Array pool for spinner disks.
Tier 2: Pool for nVme and SSD disks
Tier 3: a RAM disk
This way a user could create a truly fast system and equally robust system.
I guess one can hope for version 8.0.