systemd Developer Tom Gundersen teg@jklm.no resolved.conf 5 resolved.conf resolved.conf.d Network Name Resolution configuration files /etc/systemd/resolved.conf /etc/systemd/resolved.conf.d/*.conf /run/systemd/resolved.conf.d/*.conf /usr/lib/systemd/resolved.conf.d/*.conf These configuration files control local DNS and LLMNR name resolution. DNS= A space-separated list of IPv4 and IPv6 addresses to be used as system DNS servers. DNS requests are sent to one of the listed DNS servers in parallel to any per-interface DNS servers acquired from systemd-networkd.service8. For compatibility reasons, if this setting is not specified, , the DNS servers listed in /etc/resolv.conf are used instead, if that file exists and any servers are configured in it. This setting defaults to the empty list. FallbackDNS= A space-separated list of IPv4 and IPv6 addresses to be used as the fallback DNS servers. Any per-interface DNS servers obtained from systemd-networkd.service8 take precedence over this setting, as do any servers set via DNS= above or /etc/resolv.conf. This setting is hence only used if no other DNS server information is known. If this option is not given, a compiled-in list of DNS servers is used instead. LLMNR= Takes a boolean argument or resolve. Controls Link-Local Multicast Name Resolution support (RFC 4794) on the local host. If true, enables full LLMNR responder and resolver support. If false, disables both. If set to resolve, only resolution support is enabled, but responding is disabled. Note that systemd-networkd.service8 also maintains per-interface LLMNR settings. LLMNR will be enabled on an interface only if the per-interface and the global setting is on. systemd1, systemd-resolved.service8, systemd-networkd.service8, resolv.conf4