Yo, I’ve been in the same boat. I used IP Generator Tool (ipgenerator.io) and it worked like a charm. It’s free for basic use, and you can tweak the range easily.
For duplicates, maybe store the generated IPs in a list and check against it before adding new ones? Just a thought.
For duplicates, maybe store the generated IPs in a list and check against it before adding new ones? Just a thought.