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I am having a problem with pihole and mullvad (thebrainbin.org)

submitted 4 weeks ago by osanna@thebrainbin.org to c/selfhosted@lemmy.world

8 comments fedilink hide all child comments

Hello

So I set up pihole on my new raspi, and when i set custom dns server (local address, 192.168.x.x) on mullvad, it stops resolving. It resolves for about 10-15 seconds, but then after that, it stops resolving.

The pihole works without mullvad, and mullvad works without custom dns being set up. I have tried on multiple machines (mac)

Anyone experienced this and anyone know of a fix?

I will probably get in contact with mullvad and see if they have any insight.

TIA

all 9 comments

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[–] in_my_honest_opinion@piefed.social 4 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

https://en.wikipedia.org/wiki/Split_tunneling

https://mullvad.net/en/help/split-tunneling-with-the-mullvad-app

https://discourse.pi-hole.net/t/split-dns-for-multiple-routers-with-same-local-domain-name/64192

What does the command dig debian.org return?

[–] osanna@thebrainbin.org 1 points 3 weeks ago (1 children)

interestingly, it resolves it. hmm. I don't know. I tried a few domains after a while of having the custom dns set up, and it resolved all of them.

[–] in_my_honest_opinion@piefed.social 2 points 3 weeks ago

Which DNS server is hitting first your local pihole or the remote mullvad one?

[–] osanna@thebrainbin.org 3 points 4 weeks ago

btw, I have set local connection to true

[–] scott@lem.free.as 2 points 3 weeks ago

You will need to be more specific on your configuration for us to provide a more comprehensive response.

I have Pihole configured with Mullvad as the primary upstream DNS provider (albeit with DoH).

Just make sure you're using IP addresses for the upstream Mullvad DNS servers since you won't be able to resolve their names without first having DNS (i.e. chicken-egg).

[–] Natanox@discuss.tchncs.de 2 points 4 weeks ago (1 children)

Doesn't your local DNS has to reach out to another DNS to query yet unknown addresses, causing an infinite loop as it's now told to reach out to itself?

[–] osanna@thebrainbin.org 4 points 4 weeks ago

nah, the pihole is set to every dns available minus google for external addresses.

[–] paultimate14@lemmy.world 2 points 3 weeks ago

I have had issues in the past with bad SD cards on my pi-hole that cause it to stop working after a few minutes. I know you said it works fine without Mullvad, but was that just a quick verification or an extended long-term test with traffic?