In order for the kdb keytab to be used from within the KDC, the KDC needs to set the master key list in the context. https://github.com/krb5/krb5/commit/1dfc62e02bcfee4e9b0194a2c5dd956ce7d86c4b Commit By: hartmans Revision: 22093 Changed Files: U trunk/src/kdc/kdc_util.c U trunk/src/kdc/main.c