Wi-Fi Hotspot DHCP (on Linux Mint) not supplying IP adress - In conflict with Pihole-FTL

[dekbik]

@yubiuser

DNS runs on port 53, so Pi-hole really needs it.

If your Hotspot uses dnsmasq your could add -port=0 to the dnsmasq config files to disable DNS functionality and only leave DHCP.

This actually did it. Can't believe I decided to skip this particular setting.
Thanks for pointing it out!

@Bucking_Horn

The topic you've linked also details additional measures to concert coexistence as provided by MichaIng, e.g.:

@MichaIng

You can specify the alternative DNS server passed to DHCP clients (not sure what is default here when the internal one is disabled) by additionally adding:

dhcp-option=6, x.x.x.x[, y.y.y.y]

This can be Pi-hole, but you may need to allow requests from all origins in Pi-hole first, if the hotspot is a different subnet.

So what does this accomplish exactly? Right now my wifi hotspot is using the DNS of Pi-Hole. Does this line go in:

/etc/NetworkManager/dnsmasq-shared.d/disable-dns.conf
or
/etc/NetworkManager/dnsmasq.d/insertcustomname.conf (I Assume it's this one)

The subnet of my home network is 192.168.2.*, while the hotspot subnet is 10.42.0.10 - 10.42.0.254.

Since the wireless network reroutes traffic over the wired network interface, shouldn't "Respond only on interface enp2s0" suffice, instead of "allow requests from all origins"?

Isn't this option redundant in the first place, since it already routes traffic through the Pi-Hole DNS?

Would dhcp-option=6, 127.0.0.1[, ip.to.another.alternative.dns] make sense?

Thanks again.