Best way of using dnsfilter on merlin for smartDNS and pihole ?

[vw-kombi]

I use skynet and Fresh QOS (if that has any bearing on this).

I have just installed 2 new pihole instances - 192.168.1.5 and 192.168.1.6 (secondary dns backup - one on UnRaid docker, on a dedicated rasberry Pi).
I currently have the router dns set to 9.9.9.9
I currently have the DHCP DNS set to 192.168.1.5 and 192.168.1.6 (and disabled advertised router ip address)
This all works, clients have the correct 2 pihols dns only.

I also have edits in dnsmasq.conf.add for my 6 roku devices to use a smartDNS service.
I came across the dnsfilter stuff today (not sure how I missed that before).
Could I delete the edits in the dnsmasq.conf.add, then enable dnsfilter ? After reading the doco, it seems I can enable the filtering, then set global filter mode to router ("Router" will force clients to use the DNS provided by the router's DHCP server), then add 6 entries for the MAC addresses of the roku's, and set then to Custom 1, with custom1 being the dns ip for the smartDNS service.

Am I going around this the right way ?

 

[martinr]

What you propose is the elegant way of doing it, except the roku has its DNS hard coded https://www.snbforums.com/threads/diversion-the-router-ad-blocker.48538/page-46#post-438127 so would it take note of the DNS address in Custom 1 or would it do its own thing? Shouldn’t be difficult to test once you’ve set it up.