apache2 (2.4.25-3+deb9u5) stretch; urgency=medium
* This package upgrades mod_http2 to the version from apache2 2.4.33. This
fixes a lot of bugs and some security issues, but it also removes the
support for using HTTP/2 when running with mpm_prefork. HTTP/2 support
is only provided when running with mpm_event or mpm_worker.
-- Stefan Fritsch <sf(a)debian.org> Sat, 02 Jun 2018 09:51:46 +0200