ZFS 11.1-RELEASE-p1: ZFS userquota, NFS quotas and quota(1)

I'm attempting to set up a machine as an NFS server with the data being stored on a ZFS filesystem.

I've been doing this for nearly ten years on our Solaris 10 servers, which this new server is eventually going to replace, and we need to use the userquota facility to manage user's storage space.

Unfortunately I've hit a bit of a road block as although zfs get userquota@username returns the correct value quota(1) doesn't show a quota and neither do remote machines which connect via NFS (zfs set sharenfs=on).

Any clues?

Thanks in advance.