In case anyone is interested, I've put
another set of tarballs for my NFSv2,3,4
server for BSD up anonymous ftpable. It
now includes a basically functional
client for OpenBSD3.7. (The server
currently works on OpenBSD3.7 and FreeBSD5.4.)
It includes support for NFSv2,3 and 4,
including RPCSEC_GSS.

Anyhow, if you're interested, take a
look at ftp://ftp.cis.uoguelph.ca/pub/nfsv4.

Have fun with it if you try it, rick