Access to internal DNS when using WireGuard

bish0p

Tuesday

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Registered: 2026-01-13

Access to internal DNS when using WireGuard

Tuesday

Tags: #WireGuard #DNS

Model: ER7412-M2

Hardware Version:

Firmware Version:

Hi,

I'm quite new to Omada setups. I have:

* multiple subnets
* WireGuard access
* configured "LAN DNS" in order to achive split DNS

Everything is working fine. When I'm in one of the configured subnets, the default GW in those nets it running unbound (tested with Nmap) as DNS which does DNS resolution as intended.

My problem: I also want split DNS when connected via WireGuard. But that does not work.

When I connect via VPN with WireGuard listening on 10.10.5.1 and my client having 10.10.5.5, I can reach hosts in other subnets, but not 10.10.5.1 which I thought the DNS server would be running on. Allowed IPs are set correctly on both client and server side.

My feeling is, TP-Link propably not intend the use case I have. Am I wrong? Does anyone know how this is supposed to work?

1 Reply

Hank21

Wednesday

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Registered: 2021-12-13

Re:Access to internal DNS when using WireGuard

Wednesday

Hi @bish0p

Thanks for posting in our business forum.

To assist you with this issue, may I ask what is your network topology?

Is the device with LAN (split) DNS connected with the remote Wireguard VPN server?

Is it possible that you can provide the multiple subnets and LAN DNS configuration screenshots of this ER7412-M2 for our reference?

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Access to internal DNS when using WireGuard

Access to internal DNS when using WireGuard

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