Kerberos enctypes

[Mihail Krivushin]

I read docs and search in google, but I dont understand, how can I 
configure enctypes?
NFS4 in linux now support only des-cbc-crc enctype. But I can get only 
des-cbc-md5.
Can you give me small example of such configuration?
I try in that way:
<property name="encryptionTypes" value="des-cbc-md5 des-cbc-crc" />
And this, of course, not work. I dont know java, and can't find solution.