File conf.ntp-wait.service of Package ntp

[Unit]
Description=Wait for ntpd to synchronize system clock
Requires=ntpd.service
After=ntpd.service
Conflicts=systemd-timesyncd.service
Wants=time-sync.target
Before=time-sync.target
ConditionVirtualization=!container
ConditionCapability=CAP_SYS_TIME

[Service]
Type=oneshot
ExecStart=/usr/sbin/ntp-wait -s 1 -n 30000
RemainAfterExit=yes
StandardOutput=null

[Install]
WantedBy=multi-user.target