Tech/Protocols/DNS/DNS resolver in systemd

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systemd-resolved

On Linux the systemd project which is the most common initialization and process management software there is a built in DNS resolver.

See the status

systemctl status systemd-resolved

Start it up and enable

systemctl status systemd-resolved
systemctl start systemd-resolved
systemctl enable systemd-resolved
systemctl status systemd-resolved

Stop it and disable

systemctl status systemd-resolved
systemctl stop systemd-resolved
systemctl disable systemd-resolved
systemctl status systemd-resolved

Conflicting Port

If you are trying to run a DNS server of your own and find that something is bound to the port 53/UDP and or 53/TCP then check the systemd-resolved.

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