At SambaXP 2020 the idea came up to expose the NT ACLs via the more commonly used extended attribute system.nfs4_acl - which is the default attribute also for NFS4. Those ACLs can be managed with the well known toolset of nfs4-acl-tools and those ACLs could even be managed by Samba through the nfs4acl_xattr module. This would improve overall cifs ACL management a lot. This bug is to folow the status of this idea, is there some rough eta for this, Steve?