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by larschdk 1862 days ago
DNS + NTP are completely optional, but you get really good integration with systemd-networkd's DHCP client if you use them. Switching network is completely seamless, and the resolver updates fully automatically (direct DNS and NTP are blocked in many networks, sadly). Also, you get something that works out of the box, with essentially 0 configuration. You can't even install a system today over the internet without setting the time, and systemd-timesyncd does it with 0 configuration.