RHEL 9.6 Beta is now available and current kernel version is: 5.14.0-552.el9 Only tested build in a vm: Lustre client 2.15.6 does not build. Lustre client 2.16.1 build OK. zfs-2.1.16 does not build. zfs-2.2.7 build OK. Lustre server (zfs) zfs-2.2.7 + lustre-2.16.1 build OK. Kind Regards / Fredrik Nyström