I have raised bug report, issue 3272. I did so instead of ‘Package Update’ because I found there is lib64lxc package provides the required library but it cannot be installed because lxc currently depends on lib64lxc1.
I did try to build rpm package using the spec file (rolling branch) and as instructed in How to Build and Submit Packages for OpenMandriva. This builds the correct library package lib64lxc. I don’t know where ‘dnf’ gets its dependency information; could not find anything ‘liblxc’ under ‘Requires’ in the spec file.
Thank your for your support as well.