If you're calling a submission a dupe, say so.

In this case, there's an 11-hour old submission, but at only 6 comments, it's well below the threshold I (a non-privileged HN participant) usually call for dupes, that being ~20 comments.

So no, this is not a dupe.

Edit: For clarity, from the HN FAQ:

Are reposts ok?

If a story has not had significant attention in the last year or so, a small number of reposts is ok. Otherwise we bury reposts as duplicates.

<https://news.ycombinator.com/newsfaq.html>

"Significant" is undefined. I've given my own threshold which AFAIU is roughly that which HN mods use. But I am not one of those mods.