rpmfusion.org/nonfree/fedora/updates/28/x86_64/l :
libunrar-5.6.6-1.fc28.i686.rpm
libunrar-5.6.6-1.fc28.x86_64.rpm
libunrar-devel-5.6.6-1.fc28.i686.rpm
libunrar-devel-5.6.6-1.fc28.x86_64.rpm