Hmm... What I'm trying to accomplish here is a configuration where users
authenticate to the ldap server with username/password (no kerberos
ticket) and their password is checked from kerberos. Is this possible
to do with the standard plugins? I've had a hard time trying to figure
out how to do this... =) The idea in this is that we'd like to have
a single service for authenticating users, even for services that do not
support kerberos.
  
This isn't supported in the current code.
If it's not possible, I'll look into writing a plugin that does this.
  
Sounds good. First you'd need to figure out how to perform a proxied authentiation
against kerberos. With the existing SASL/GSSAPI mechanism we don't need to do
that because we're simply passing through the authentication payload between GSSAPI
and the client. Presumably you'd need to do whatever 'kinit' does, but inside the DS.