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Forum Discussion
JosefHelie
Apr 07, 2026Aspirant
Guest Wifi network stuck on old DNS configuration Orbi RBR750 in AP mode
Hello everyone, I'm running into a strange DNS issue on my Orbi setup and I'm hoping someone here can help. My setup: Main router: Freebox Pop (ISP router in France) Orbi RBR750 configured...
- Apr 08, 2026
If you set a static IP address configuration for AP mode, you can set a specific or custom DNS address to use on the RBR while its in AP mode.
Static IP Address Configuration for AP Mode | NETGEAR Communities
While in AP mode any connected clients get DNS either from the custom DNS set on the RBR explicitly or if dynamically, will come from the host router up stream that is set there or automatic detected from the ISP. I believe any Guest Network side of things would also be automatic from the host router. Not sure if setting static and explicit DNS on the RBR in AP mode changes for the Guest Network side of the RBR.
If anything factory reset the RBR and setup from scratch with a ethernet PC and set up DNS there, then change to AP mode and test.
JosefHelie
Apr 08, 2026Aspirant
Hi and thank you a lot for answering me :)
I'm not really sure to get the question. Here are 4 links to screenshots:
I'm not sure this will fully answer your question. We can rule AdGuard out of the equation, as I'm currently testing a simpler setup to debug the situation with just Cloudflare and Quad9. Could you rephrase so I understand exactly what you want to know? I'll give it a try anyway, correct me if I didn't get the full meaning:
In my Freebox Pop configuration (Paramètres de la Freebox → Mode avancé → DHCP), I can explicitly set the DNS servers that the Freebox pushes to clients. It's not automatic: there are 5 fields (Serveur DNS 1 through 5) where I've entered my own values:
- DNS 1: 8.8.8.8 (Google)
- DNS 2: 9.9.9.9 (Quad9, as fallback)
So the Freebox pushes whatever DNS servers I configure in that DHCP section. It doesn't force clients to use itself as a resolver, it just relays what I tell it to relay in the DHCP offer. And as I mentioned earlier, when I connect to the main network I get the DNS servers I've set, but not on the Guest network, without changing anything on the Freebox.
Thank you again, let me know how I can better answer you, maybe running terminal commands.
- plemansApr 08, 2026Guru - Experienced User
When you log in through the browser and not the app to the orbi, its showing ap mode?
What what is its settings page showing?
Did you change the IPv6 dns settings as well?