PSA: custom dnsmasq configurations are disabled by default in Pi-hole v6
cross-posted from: https://lemmy.blackeco.com/post/1434522
To re-enable them, you have to set
misc.etc_dnsmasq_dtotrueeither by editing/etc/pihole/pihole.tomlor using thepihole-FTLcommand:bashsudo pihole-FTL --config misc.etc_dnsmasq_d true
I made sure to read about their changes and still ran into this issue. All I found was a forum post from the beta, so it was clearly something people would be affected by. Finding out what was wrong was easy but finding that command was not.
I went through the same process as you. They clarified the issue three days after release though https://pi-hole.net/blog/2025/02/21/v6-post-release-fixes-and-findings/#%3A%7E%3Atext=your%C2%A0local%C2%A0network.-%2CCustom%2Cconfigs+not+loading%2C-Sorry%2C+this+probably
I just ran into this last night and discovered the solution as well. Unclear why they chose this migration behaviour!
I'm just running into this now. It also won't let me log into the web interface. I'm glad I experimented with a second install before upgrading my primary pihole.