Yes positive. The blackened part if the hostname which is unique.
When I was adding them one by one, I started with the first, then went to the second, then the third, then the fourth, all added, when I got to the fifth got that error.
So being stuck on iDRAC 5, I then went into each of the iDRAC’s (1, 2, 3) and noticed they all had the name of “idrac8”. So I changed them to something unique.
Went back to add the device, same duplicate sysName error.
So I then went to add the sixth one, no problems.
Now that I updated 1,2,3, I went to Edit the config of the device, then did “rediscover device”, hoping the “System Name” in the Overview page of LibreNMS would update, but still showing “idrac8” in the web interface.
Would it be easier to just remove them all and start again? or would this make things worse?