Relevant build options: option('dns-servers', type : 'string', description : 'space-separated list of default DNS servers', value : '

Relevant build options: option('dns-servers', type : 'string', description : 'space-separated list of default DNS servers', value : '1.1.1.1 8.8.8.8 1.0.0.1 8.8.4.4 2606:4700:4700::1111 2001:4860:4860::8888 2606:4700:4700::1001 2001:4860:4860::8844') option('ntp-servers', type : 'string', description : 'space-separated list of default NTP servers', value : 'time1.google.com time2.google.com time3.google.com time4.google.com') https://github.com/systemd/systemd/blob/main/meson_options.txt#L268-L273 https://github.com/systemd/systemd/blob/main/meson_options.t... Seems like Cloudflare primary then Google primary (followed by the secondary records in the same order) is the preferred default order for both IPv4 and IPv6.