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help debugging LAN -> WAN connection (lemmy.dbzer0.com)

submitted 7 months ago by ExcessShiv@lemmy.dbzer0.com to c/selfhosted@lemmy.world

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I have been seeing periodic drops in internet access from LAN connected devices lately (last 2 months), and I haven't been able to figure about exactly what is going on. There doesn't seem to be a pattern, and it resolves itself after a few hours.

I can access the internet from my router
All devices on LAN can reach each other, both wired and WiFi
All devices on LAN can reach router, both wired and WiFi
I haven't changed anything in router settings
I haven't added new devices to my local network
I can't find any IP conflicts
It's a simple flat network with two APs, a single switch, no VLAN separation

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[–] ExcessShiv@lemmy.dbzer0.com [S] 2 points 7 months ago

I mean, i have narrowed it down to some kind of DNS issue, I just don't know what. Right now everything is working again (I haven't changed anything), so I'll have to keep looking next time it stops working. It's just weird it works for days/weeks at a time, and then suddenly breaks for a few hours until it "magically" fixes it self again without me doing anything.

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