It seems that the reason of the error is this package https://build.opensuse.org/package/view_file/openSUSE:Factory/ntpsec/ntpsec.change It has been added 12 days ago and provides ntp-4.2.9, so since then /usr/sbin/sntp is not available anymore: The current test was something like: "LANG=C /usr/sbin/sntp -#{ip_version} -K /dev/null -t 5 -c #{server}"