AFAIK no. Most are obvious-ish: disallow all, the client and server ones. The hardware preauth one is just a placeholder for unimplemented functionality. JPL never made much use of them.
The ok as delegate one could be important for AD interoperability if you do a HTTP-Negotiate with web servers.
That’s just off the top of my head.
> On Feb 17, 2017, at 3:30 PM, Adam Lewenberg <[hidden email]> wrote:
> I am looking for documentation on the attributes that can be set on a principal. The only thing I could find is page 233 of Jason Garman's "Kerberos: The Definitive Guide" from 2003.
> The kadmin page *lists* the attributes, but is there a man page or Heimdal document page that *describes* what each attribute does and how it affects the principal?
> Thanks, Adam Lewenberg