perl-BerkeleyDB performs exact db4 version checks at runtime to make sure the system db4 version is the same it was built with

However the perl-BerkeleyDB package requires do not reflect this exact version dep and let yum and the buildsystem push db4 versions that break existing perl-BerkeleyDB packages

perl-BerkeleyDB requires should reflect its strict db4 version requirements to avoid this problem.