I enabled that and got it connected, but doesn’t solve my problem.
I don’t have the option to create my own network. It’s basically just a repeater but with a different SSID now. I’m still on the .0.1/24 range from the home router, but I want my own .1.1/24 where I can run NAT and my own DHCP on my little network that’s attached to the main router for internet connectivity.
You don’t technically need a separate network for that, you could have pihole acting as DHCP and DNS on your one network, and you could configure whether to filter DNS based on who the client device is.
When your device requests an IP address and configuration form a DHCP server, DHCP replies with a packet full of various “Options” containing the IP address, router address, DNS address, and potentially many other things in a reply that has a structure of these repeating “Options” fields.
Option “6” happens to be for DNS - your setting will override what OpenWRT (which relies on dnsmasq for DHCP and DNS) is using for option 6, leaving other stuff intact.
Option “3” is the router /gateway if you want to override it for whatever reason… Wikipedia has a table with common stuff:
You should be able to see your desktop wifi card in openwrt logs, potentially you could change the log_level to be more verbose in /etc/config/wireless if you’d like to see more stuff… or look at what’s your desktop complaining about in more detail (not sure what OS you’re using, there’s probably logging somewhere).