krb5reauth is a quick hack that's useful for running daemons that should have Kerberos tickets (but don't know how to use keytabs properly) and/or should be authenticated to AFS.

On (the webserver which vhosts, among other things), I use this program to keep Apache authenticated to AFS. At two sites I use the de-AFSed version to get slurpd a Kerberos ticket so that it can propagate changes to backup LDAP servers.

As it's a quick hack, it may need editing in order to work.