v9.3

- dietpi.txt | Update default and description for CONFIG_NTP_MIRROR

dietpi.txt

@@ -223,10 +223,13 @@ CONFIG_APT_RASPBIAN_MIRROR=http://raspbian.raspberrypi.com/raspbian/
 # - Debian: https://www.debian.org/mirror/official#list
 CONFIG_APT_DEBIAN_MIRROR=https://deb.debian.org/debian/
 
-# NTP mirror, applied to /etc/ntp.conf
-# - For a full list, please see: https://www.ntppool.org/zone/@
-# - Please remove the initial integer and full stop from the value (removing "0."), eg: debian.pool.ntp.org
-CONFIG_NTP_MIRROR=debian.pool.ntp.org
+# NTP server(s) applied to /etc/systemd/timesyncd.conf
+# - "default": Use the NTP server(s) provided via DHCP, else the debian.pool.ntp.org NTP pool.
+# - "gateway": Use the router/gateway as NTP server. Recommended, if it does provide this functionality.
+# - To use a public NTP pool, see the full list at: https://www.ntppool.org/zone/@
+#   Use the pool domain without leading integer and dot (without "0."), like "debian.pool.ntp.org", "pool.ntp.org" or "uk.pool.ntp.org".
+# - You can also use a custom IP address, hostname or any combination of space-separated IP addresses, hostnames and NTP pool domain.
+CONFIG_NTP_MIRROR=default
 
 #------------------------------------------------------------------------------------------------------
 ##### DietPi-Software settings #####