[Samba] klist versus kadmin

[degbert degbert]

I'm having a problem with kadmin not doing what klist says should work.

klist will show my keytab file (with minus k), but when I try and use
a principal in that keytab with kinit, I get an error:
 kinit(v5): Client not found in Kerberos database while getting
initial credentials

I setup both the Windows server and the Linux client, so I've made a
mistake somewhere. What have I done wrong?