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Hairpin dns issue (lemmy.world)

submitted 3 months ago by mortalic@lemmy.world to c/selfhosted@lemmy.world

29 comments fedilink hide all child comments

I've got Immich working great on Unraid, but if I'm on my network I can't really use it. Just fails to resolve the dns. I looked it up and it's that my router doesn't support hairpin or something. It's a Aginet hb810. I found a workaround in the Immich client where you can add a second entry that's network specific, but it doesn't seem to work very reliably.

What are my options?

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[–] cecilkorik@lemmy.ca 2 points 3 months ago* (last edited 3 months ago) (2 children)

I'm not too familiar with unraid but from a little research I just did it seems like you're right. That does seem like a really unfortunate design decision on their part, although it seems like the unraid fans defend it. Obviously, I guess I cannot be an unraid fan, and I probably can't help you in that case. If it were me, I would try to move unraid to its own port (like all the other services) and install a proxy I control onto port 443 in its place, and treat it like any other service. But I have no idea if that is possible or practical in unraid. I do make opinionated choices and my opinion is that unraid is wrong here. Oh well.

[–] tko@tkohhh.social 1 points 3 months ago (1 children)

Totally fair... I appreciate you engaging with me, your perspective is appreciated! I won't defend Unraid's choice when it comes to the UI ports, but I will simply say that there are things that are really nice about Unraid from a usability standpoint.

Thanks again for your thoughts!

[–] cecilkorik@lemmy.ca 2 points 3 months ago

Convenience is great until it becomes inconvenient. But that's a journey we all make :)

[–] tko@tkohhh.social 1 points 3 months ago (1 children)

As I dug into this, I found that it is in fact trivial to change the Unraid UI ports. There's a setting for it. I can only assume that since Unraid attracts a LOT of novices, bad advice gets passed around and taken as gospel. So, I changed Unraid's ports, set my reverse proxy to listen on 80/443, updated the NAT on my router, and added the relevant host overrides to the DNS Resolver. Hairpin eliminated. Thanks again!

[–] cecilkorik@lemmy.ca 2 points 3 months ago

Great news! Also thanks for providing the follow-up, hopefully it helps people who use Unraid in the future.