Why nfs mounts are allowed that aren't in /etc/exports?

[Yuri]

I only have this one line exports:
/usr/diskless.sparc64 -alldirs -maproot=root -network=192.168.0 
-mask=255.255.255.0

But somhow all mounts are succeed: /home, usr/ports, etc.

Isn't exports supposed to limit what can be mounted?

Yuri