<citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
systemd-timesyncd will contact all configured system or
per-interface servers in turn until one is found that
- responds. This setting defaults to an empty
+ responds. When the empty string is assigned, the list of
+ NTP servers is reset, and all assignments prior to this one
+ will have no effect. This setting defaults to an empty
list.</para></listitem>
</varlistentry>
<citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
take precedence over this setting, as do any servers set via
<varname>NTP=</varname> above. This setting is hence only used
- if no other NTP server information is known. If this option is
- not given, a compiled-in list of NTP servers is used
- instead.</para></listitem>
+ if no other NTP server information is known. When the empty
+ string is assigned, the list of NTP servers is reset,
+ and all assignments prior to this one will have no effect.
+ If this option is not given, a compiled-in list of NTP servers
+ is used instead.</para></listitem>
</varlistentry>
</variablelist>