pgdg94 conflicts with RHEL 6.8

Dear reader

we discovered the same issues mentioned in Bug 14175, even if we use
systems which are based on RHEL 6.8.

Actually we are trying to get the last minor updates on the Red Hat
systems via yum, where the postgresql 9.4 client is installed, which
fails due to file conflicts:

file /usr/lib64/libevent-2.0.so.5 from install of
libevent-2.0.19-1.rhel6.x86_64 conflicts with file from package
libevent2-2.0.21-2.el6.x86_64
file /usr/lib64/libevent_core-2.0.so.5 from install of
libevent-2.0.19-1.rhel6.x86_64 conflicts with file from package
libevent2-2.0.21-2.el6.x86_64
file /usr/lib64/libevent_extra-2.0.so.5 from install of
libevent-2.0.19-1.rhel6.x86_64 conflicts with file from package
libevent2-2.0.21-2.el6.x86_64

I am writing this bug report to find out if the problem is repository
management related or an explainable package handling fault.

All of the following packages are currently installed.

postgresql-libs.x86_64 8.4.20-6.el6 @rhel-x86_64-server-6
postgresql-odbc.x86_64 08.04.0200-1.el6 installed
postgresql94.x86_64 9.4.8-1PGDG.rhel6 @pgdg94
postgresql94-libs.x86_64 9.4.8-1PGDG.rhel6 @pgdg94
libevent.x86_64 1.4.13-4.el6 installed
libevent2.x86_64 2.0.21-2.el6 @rhel-x86_64-server-6

Thanks for any response.

Best regards
--
Tony Wecker
Systems Engineer
T-Systems Multimedia Solutions GmbH
Dresden, Germany