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When Pi-hole is down? (self.selfhosted)

submitted 9 months ago by machinin to c/selfhosted

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I have an asus router with a pi-hole on the network.

I was doing some work on my server and noticed that when pi-hole was down, I couldn't access the internet. I was looking for some ideas online how to deal with this, but they said to have a second pihole on the network in case one is offline. Is that the only way to do it? Is there any way to have the network go back to normal if the pihole is offline?

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[–] Rooki 2 points 9 months ago (2 children)

Does it really do that? I thought if pi-hole blocks it, it just says nothing here, normally a pc then looks up your secondary dns and then ads are back at it.

This was my experience when i did that.

[–] HybridSarcasm 8 points 9 months ago* (last edited 9 months ago)

Yes, your experience will be different if your DNS is being provided by another kind of DNS resolver. If you want a consistent pi-hole experience (and you can’t avoid downtime of your current pi-hole), add another pi-hole to your network and let that be your secondary DNS resolver.

[–] [email protected] 3 points 9 months ago

No, that is not how DNS blocking works. It doesn't just avoid responding, it responds but with a response that says that the domain does not exist or one that points to a different IP address.