DNS over Wireguard

I have a Network 192.168.103.1/24 for wireguard
and 192.168.100-102.1/24 for lan. But on wireguard I have the Problem, that on wireguard my devices is not found.
Do I have to change something?

could you give more details what “devices not found” means? which devices, what are you trying to do, what is the error message (if any)…

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Its impossible network mask. Should be /23. And then its 101-102 use /22 if you need bigger network but then it will overlap with your wireguard subnet

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I had planed to set some docker servers onto 101 and 102 but It did not work currently I have only devices on 100
I still have the problem, that my Wireguard devices could not see any devices on my lan.

My lan has dev.domain.com as domain name in reforis set. My therfor in my local lan could address my nextcloud on my local nas with next.dev.domain.com but if I ping it on wireguard I get the IP from my website.

Im not able to access a device per IP and if I ping my nextcloud on my nas I get the IP from my website instead of my nas.

So make sure forwarding from Wireguard zone is enabled to lan zone. Also it depends on DNS entries in public space. If you have wildcard entry like *.domain.com in public dns then its no suprise it will resolve even your just created local domain

Yes the zones are conected. Lan <=> wg 3x allow

Connected is not the correct term here. Also from what I understood. You have forwarding from Lan to WG zone enabled. The case you have here is the other way around so from WG zone TO lan.

In which firewall zone is your WG interface?