etc/systemd/resolved.conf.d/resolved.conf


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# 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.
# xyzaa 1.1.1.1 and 9.9.9.9 both high ping, so I choose to try ali cloud DNS shown in ECS concole
[Resolve]
DNS=100.100.2.136 100.100.2.138
Domains=~.