mdns
Description:
Whether mDNS is enabled for the connection.
The permitted values are: "yes" (2) register hostname and resolving for the connection, "no" (0) disable mDNS for the interface, "resolve" (1) do not register hostname but allow resolving of mDNS host names and "default" (-1) to allow lookup of a global default in NetworkManager.conf. If unspecified, "default" ultimately depends on the DNS plugin (which for systemd-resolved currently means "no").
This feature requires a plugin which supports mDNS. Otherwise, the setting has no effect. One such plugin is dns-systemd-resolved.