Key version in .NET

[Greg Verby]

I have been trying to get kerberos to work with a Microsoft Windows
.NET DC using DES-CBC-MD5 encryption. One of the problems I am seeing
is that the DC is sending back a key version number that seems to be a
random number. It does not follow any clear pattern. This confuses the
other end as it can not find a key with a matching key version.
Does anyone know if .NET is caring about the key version and if so how
it is used?

Thanks,
Greg V.