For openSUSE Leap 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mlin7442:rebuild_fails_156:leap/openSUSE_Leap_15.6/home:mlin7442:rebuild_fails_156:leap.repo
zypper refresh
zypper install cdemu-daemon
For openSUSE Backports SLE-15-SP6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mlin7442:rebuild_fails_156:leap/openSUSE_Backports_SLE-15-SP6/home:mlin7442:rebuild_fails_156:leap.repo
zypper refresh
zypper install cdemu-daemon