BT Premium Whole Home Wi-Fi DNS and Pi-Hole

reznikk — Sat, 22 Apr 2023 16:55:00 GMT

Network setup:

192.168.1.254: Broadband router
192.168.1.253: RPi running Pi-Hole (also configured as the network DHCP)
192.168.1.252: BT Premium Whole Home Wi-Fi mesh discs (running FW SGAB20832C)

I've been using the BT discs for a little while now without issue, but recently wanted to whitelist certain domains for my kid's Xbox -- that's when I realised an issue. When devices connect to the BT discs they correctly assign the gateway (the router, *.254) and DHCP (the RPi, *.253) IPs, but give the master disc (*.252) as the DNS. This causes every device connected to the discs to be seen within Pi-Hole as one device (the master disc, *.252), and not as individual clients (*.1 through *.250).

I can of course manually set the DNS for each client manually where able, but is there a way to configure the discs (or Pi-Hole if I'm pointing the finger at the wrong device!) to give the RPi as the DNS?

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BT Premium Whole Home Wi-Fi DNS and Pi-Hole