# one way to manual set DNS, seems work
# https://wiki.archlinux.org/title/Systemd-resolved#Manually
# Without the Domains=~. option in resolved.conf(5), systemd-resolved might use the per-link DNS servers, if any of them set Domains=~. in the per-link configuration.
[Resolve]
DNS=9.9.9.9#dns.quad9.net 149.112.112.112#dns.quad9.net 2620:fe::fe#dns.quad9.net 2620:fe::9#dns.quad9.net
Domains=~.