NFS4 strange anonuid/anongid values

[disk91]

I'm sharing directories using nfsv4. the server is a SLED11 ; the client is an OpenSuse 11.1 all are using a nis server based on an OpenSuse 11.1

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SLED config (/etc/exports)
/home/myrep x.x.x.x/255.255.225.128(ro,sync,insecure,root_squash,no_su btree_check,fsid=0)
/home/myrep/share x.x.x.x/255.255.255.128(rw,all_squash,anonuid=1001,anongid =8,sync,nohide,insecure,no_subtree_check)

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Opensuse Client (/etc/fstab)
x.x.x.x:/share /home/share nfs4 rw 0 0

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after mounting the directory : ls -ld /home/share
drwxr-xr-x 3 4294967294 4294967294 4096 mars 25 2006 share

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Ids are wrong ids ... where is the problem ? bug ?
systems are x86_64