NFS directory cache bug in 2.3.99pre3?

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There might be a tiny bug with the file cache.

$ cd /nfs/mounted/dir
$ mkdir tst tst2
$ touch tst/a tst/b tst/c
$ ls tst
a b c
$ mv tst/* tst2/
$ ls tst2/
a b c c
$ ls tst2/
a b c

Seems like the last file move'd has a duplicate dir entry, which
disappears again after the first access to the directory list.
The bug does not show up on a cp, only mv.

Client is RH6.1 w/2.3.99pre3 kernel.
NFS server is RH6.0 w/knfsd-1.2.2.

-- 
LarsG.
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