keytab file usage

[Vinayak]

Hi All,

I am thinking of using  keytab file generated from one KDC to get
ticket from another "identical" KDC. Please let me know if this is
possible?

Let me explain the scenario:

We have 2 labs at different location (different continents). We have
two KDCs setup at each location. Both KDCs are identical.

In Lab 1:
We add a user (say user1) to keytab (say user1.keytab).

Send it across to the other lab (Lab2).

In Lab 2:
I try to do:
"kinit user1 at TEST.REALM -k -t user1.keytab"

I am getting following error:
kinit: Password incorrect while getting initial credentials

I am doing this for testing (automation) purpose. I want to run the
same script with same users at both locations.

First question:
Is this configuration possible? If Yes, what should I do to get it
working?

Second Question:
Are there any ways that I can implement same script running at both
locations?

Waiting for responses.

-Vinayak