MacOS – Confusing reverse DNS IP replacement, ever since I edited /etc/hosts

dnsmacosNetwork

A while ago I was trying to set up convenient ssh to a server, so I added an entry to /etc/hosts (not real IP):

# Host Database
104.111.11.1    dokku.1

I've realized since then that using ~/.ssh/config is a better solution, so I removed the hosts entry. But ever since then, the IP seems to reverse-resolve to dokku.1 when I try to visit that IP in safari, it replaces it with dokku.1, then fails to resolve the hostname. Does anyone know where that resolving behavior is coming from, and how to stop it? I have rebooted the computer since I removed the entry.

macOS 10.12.6

Best Answer

Welp, turns out it's actually the server at the IP address returning an HTTP 301 redirect. It was just so fast I didn't notice.

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