How to add default local domain (home.lan) to names for LAN machines?

[yubiuser]

You could try expand-host, but there are certain limitations:

Clients unable to resolve Pi-Hole hostname

By default, Pi-hole's embdedded dnsmasq would only automatically add DNS records for a simple hostname expanded by the local search domain if a DHCP client would claim that hostname during DHCP lease negotiation. Any manual DNS definitions (including CNAMEs, PTRs, SRVs, etc.) would be added as is, i.e without considering the search domain. You may try to enable expand-hosts as a custom configuration option, but note that according to dnsmasq documentation, this won't work for all definition ty…