Hi everyone,
I think that I finally got how Hairpin NAT works thanks to users like @sob and @anav especially, and a few articles about the same topic (Mk wiki and Gred Sowell's among many) which confirmed that I had got it right.
I also set it on my Mikrotik device and it works as expected.
Anyway, I watched the last Mikrotik youtube video about the Hairpin NAT, and I found the last point (n.4) a bit confusing.
What do you think about it?
Thanks