Give access guest network to a specfic host network device
I want to know how can I give access guest network devices to a specific host network connected device ? I've a pc connected to my deco m4 via wired. I've installed pihole on that pc & set the pc as dns resolver on the dhcp dns option. The problem is guest network devices can't access to the pc. Router firewall block them I think. So the guest network connected device can't use internet at all because the dns query request can't reach to my pc. I want to allow to the pc from guest network so that guest users can use internet. If I set the pc on wan dns resolver then everything works fine but when I restart my deco for some reason or load shedding then after reboot the Lan IP of my deco automatically change everytime [Maybe a bug]. As I've set my pc as wan dns resolver after auto changes the lan IP internet stop working as it should be because the IP of my pc also changes !! Need to configure the router firewall so that I can set the pc's IP on dhcp dns & also internet work on guest network.
Here is my network diagram: