@mrbuzz_Patrice. as you can see from @phillxnet’s postings on the forum, the transition to OpenSUSE is not quite complete yet, as the current versions are all release candidates/for beta testing towards the final image that will allow you to install the 4.x version of Rockstor and mark the transition from a CentOS based solution to OpenSUSE.
Since the testing requires some more advanced technical knowledge and the development team is very small, creating interim rpms at this time is probably too time intense, since nobody is a full-time developer on this distribution.
So, I’m asking for some more patience, until the function parity is achieved and the team can finally roll out an “installable” release.
To follow up, when you installed just LEAP15.2 were you able to make use of the 10G NIC you mentioned in your post title?