And here is a link to the bug which is tracking NFS in zones: http://bugs.opensolaris.org/view_bug.do?bug_id=4964859
Note that the description sucks right now as far as OpenSolaris is concerned. I'll get the relevant comments back into the description. BTW: I crossposted to all of the discussion groups to get as much feedback as possible. I'm willing to pull back to just the nfs-discuss group and point the other groups to it.