[NFS-Ganesha-Devel] Support for xattrs, where client is macOS (darwin and ventura) .... and Ganesha runs on same machine

In my system setup I have the NFS client and NFS server (Ganesha) running on the same machine, running macOS (darwin and soon ventura). Most things are working, but xattrs do not work. Does anybody has pointers on how to get this to work? I am aware of RFC8276 "File System Extended Attributes in NFSv4" and it looks like Ganesha has added support for RFC8276 (right?). But even after mounting the NFS filesystem with "namedattr" it looks like this does not work: "xattr -l README" returns empty output.