DHCP - DNS Server per Client

[atlantex]

Hi there,

I got 2 instances of pihole running, with different block lists. I want to set some clients to the first pihole and another clients to the second one. When I use the DNSFilter option then it works but in pihole I always see the Asus router IP as the request system. I want to see the real client ip, therefor the only way I see is to set DHCP options in order to control which clients gets which dns ip.

Has anyone experience how to do this with an Asus router?

thx

atlantex

 

[ColinTaylor]

You'd have to use Merlin's firmware and a custom dnsmasq file.

Off the top of my head I'd suggest you experiment with something like this:

dhcp-option=tag:pihole1,option:dns-server,192.168.1.10
dhcp-option=tag:pihole2,option:dns-server,192.168.1.11

dhcp-host=11:22:33:44:55:11,set:pihole1
dhcp-host=11:22:33:44:55:22,set:pihole1
dhcp-host=11:22:33:44:55:33,set:pihole1
dhcp-host=11:22:33:44:55:44,set:pihole1

dhcp-host=11:22:33:44:55:55,set:pihole2
dhcp-host=11:22:33:44:55:66,set:pihole2
dhcp-host=11:22:33:44:55:77,set:pihole2
dhcp-host=11:22:33:44:55:88,set:pihole2

If the two PiHoles are the only DNS servers on your network it would be less cumbersome to set the router's LAN DNS server to the address of the PiHole with the most clients. Then you only need to create custom entries for the other PiHole's clients.

 

[RMerlin]

DNS parameter has been available on the DHCP reservation page for quite some time already, just enter it there for each client.