Ok, basically just what the title says. Here's my setup:
host0 shared folder
\->mounted on guest as /dir
guest0 mounted dir
\->export /dir as /nfs/dir = "does not support NFS export"
The last thing on the virtualbox website is from like 3 years ago. Is this error a limitation on NFS itself, or is this indeed something to do with vbox? I don't want to mount the directory as smb/cifs either.