In message <20020524123946.A1108@vaasje.org>Frank van der Linden writes
>On Fri, May 24, 2002 at 11:53:59AM +0200, Jaromir Dolecek wrote:
[...]

>Linux (and glibc) messes this up. Which is why Linux has/had problems
>with Irix servers, that actually use opaque 64bit cookies (which
>is perfectly legitimate according to the spec). I think they only
>recently fixed it in the client kernel side. I fixed it for NetBSD
>in 1996. If you search the tech-kern archives for a message
>with subject 'NFS cookie jar' by me, you'll find a description
>of the problem and how it was fixed.

FWIW: according to Google, in april 1997, with subject "NFSv3 cookie jar",
and july 1997, subject "Directory cookies, the continuing story".

(The exact strings Frank quoted yield no hits.)