ACL on NFSv4 Mount

[Andrew LaPierre]

I've read a number of different opinions online about this, but can't seem
to verify that it's supposed to work, so I'm starting with a simple
question.

Following the testing guide here:
https://wiki.samba.org/index.php/Samba_4/OS_Requirements#Testing_your_filesystem

I can successfully set ACL attributes on the NFSv4 Server, but when I mount
it on the NFS Client, I get

"setfattr: test.txt: Operation not supported"

Do I have something wrong, or is this something that doesn't work...

--
Andrew LaPierre