piHole with Netgear R6400 using Tomato

[deHakkelaar]

Try setup network to assign Pi-hole's IP address for DNS to the clients through DHCP like described in below FAQ instead of configuring the upstream WAN or Internet DNS servers on the router:

How do I configure my devices to use Pi-hole as their DNS server?

Three methods Generally, there are three different methods that will enable devices on your network to be protected by Pi-hole. 1. Define Pi-hole's IP address as the only DNS entry in the router Rationale Only is italicized here for a reason: Pi-hole needs to be the only DNS server because it intercepts queries and decides whether or not they should be blocked. If you have other DNS servers configured, you may be sent to the correct domain, bypassing Pi-hole completely. Because of this, we…

If thats done, you can test connectivity on a Linux/Windows/Mac client PC with below one:

nslookup pi.hole <PIHOLE_IP_ADDRESS>

If that works, below one should resemble on a client if you leave out the "<PIHOLE_IP_ADDRESS>" bit:

nslookup pi.hole

If that works, you can try access the admin page in a browser:

http://pi.hole/admin