Archived
dnsmasq config was placed inside systemd.services{} block, making Nix
interpret it as systemd.services.dnsmasq.settings (which doesn't exist).
Move to top-level services.dnsmasq and add UDP 67 to firewall for DHCP
proxy mode.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>