Programmer Humor

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When you have a domain but never leave your house (lemmy.world)

submitted 1 year ago by [email protected] to c/[email protected]

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[–] [email protected] 12 points 1 year ago (1 children)

Depends. If the zone responsible for whatever resolves to that IP is hosted locally - then DNS request would stay local.

If the service behind that IP is running locally - then all traffic would stay local. Network stack would be smart enough to not run circles to find itself.

[–] [email protected] 2 points 1 year ago (2 children)

Yeah, the router ought to know that public IP belongs to a device in its own network unless you're doing stuff like running your own router behind an ISP provided router and just forwarding ports instead of maintaining IP assignment / routing tables

[–] [email protected] 1 points 1 year ago

I think OP is referring to NAT hairpinning though.

[–] [email protected] 1 points 1 year ago

Tell that to my opnsense box that refuses to NAT mirror.