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Need Help Setting NextDNS on Guest Network on UDM

Hi, first of all I'm new to networking.

I'm using NextDNS on my UDM. I have 3 networks: Main (corporate), IoT (corporate, VLAN 100), Guest (guest, VLAN 200)

I can have network on my Main & IoT network. But in Guest network it seems like doesn't work. Before using NextDNS, Guest network is working fine.  I tried set up Conditional Configuration with this: -config 192.168.5.1/24=3c43a1

192.168.5.1 is my Guest network IP address. Do I set it all wrong?

And also how can I remove config line if I input the wrong line when tried to set up Conditional Configuration & I would like to remove that. 

Thank you so much!

3 replies

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    • chad
    • 3 yrs ago
    • Reported - view

    Are you wanting to set the DNS servers for your guest network? If so, for "DHCP Name Server" select manual, then you can enter the NextDNS servers in there.

    • Torah_Ohr
    • 2 yrs ago
    • Reported - view

    I have the same issue - Any resolution?

    • bookworm
    • 2 yrs ago
    • Reported - view

    Hi Andrew, did you ever figure out how to make nextdns work for UDM Pro/SE? I have been trying since yesterday. It works fine, but as soon as I turn on “guest” radio button, nextdns no longer resolves any DNS. If I manually set the dns server, internet starts working on guest network. So, clearly it is not firewall problem.

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