Weird Internet Behavior Starting Selfhost Server & PC's (lemmy.world)

submitted 8 months ago by irmadlad@lemmy.world to c/selfhosted@lemmy.world

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Every morning, I do a multiple DNS Leak test just as a precaution. Today, I did the leak test and all my IPs were different. They were the same IP block, just different. This made me suspicious and I set about trying to track the problem down. Turns out, there was a misconfiguration in the VPS. Worked yesterday, different today. I guess it was ghosts or gremlins in the machinery.

I got to thinking, for you guys who download a lot of Linux ISOs, might be a good idea to check daily. Even though you are setting behind a VPN, it's still worth the minute it takes to fire off multiple DNS Leak checks just for a sanity check.

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[-] irmadlad@lemmy.world 1 points 8 months ago

See, I understand that when using 1.1.1 or 1.0.0.1, Cloudflare will assign different IP's to use as it deems necessary. That was not the issue. The issue was the VPN was reporting several different IP's, same IP block owned by the VPN (first three octets were the same), but different ending octets. That has never occurred in the years I've been using a VPN and checking every morning. So that is what caused the heartburn. I am running the VPN on my pFsense box.

this post was submitted on 07 Feb 2026

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