I tried to install the test build of virtualbox, exactly the package VirtualBox-6.1.15-140899-Linux_amd64.run
After sudo ./VirtualBox-6.1.15-140899-Linux_amd64.run, it works fine! I have tried with the version 6.1.16 in the mainpage, but it needs libvpx5, which i do not have in bullseye-sid! Thanks
