Bug#1083098: Can't create NFSv4 referrals

[Anton Lundin <glance@ac2.se>]

Package: nfs-kernel-server
Version: 2.6.2-4

I've used NFSv4 referalls to contralize my configuration of which
nfs-server servers which shares.

I've just configured in /etc/exports like:
/srv/foo -async,no_subtree_check,refer=/srv/foo@bar @NFS_Client_M

After upgrading to bookworm from bullseye, the server doesn't expose any
referalls any longer.

I guess that this has something to do with the transition to nfsref, but
I've not managed to get this working in bookworm, and it's a regression
from what was working in bullseye.

//Anton