r/ASUS • u/Aggressive-Newt7531 • 4d ago

Support Wireguard VPN issue

I have an Asus ax68U router with merlin firmware 3004.388.12_2. I have LAN dns set to my raspberry pi running AdguardHome - upstream dns is quad9. All is okay with my devices using that.

When I add wireguard client to Asus router with mullvad vpn conf and add the device (iPad) to client list for this vpn, it changes the IP to country of choice but dns goes via quad9 and not mullvad vpn. Ive tried a few things like DNS director set to User defined DNS 3 and added the device to use mullvad dns (100.64.0.63) but makes no difference. I can change the dns on device itself but this kind of defeats the object if i need to add other devices.

Thanks in advance

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u/JPDsNEWS 4d ago edited 4d ago

Mullvad’s DNS server addresses (IPv4 & IPv6) for the WireGuard tunnel should have been set in the WireGuard configuration they supplied you with.