Changelog for ntp-doc-4.2.8p15-10.sle11.x86_64.rpm :

* Mon Oct 19 2020 Hong Peng 4.2.8p15- update to 4.2.8p15 (multiple security issues)
* Wed May 20 2020 Hong Peng 4.2.8p14- update to 4.2.8p14 (multiple security issues)- Package init