[Samba] Samba4: 2DC domain. Which ldap:// address do I use, DC1 or DC2?

[steve]

2 Samb4 DC's joined and replicating great.
Hi
I'm running some Linux scripts on DC2 which I copied from DC1.

I changed the ldap://address for a script which I copied to DC2 to that 
of DC2. If I now deliberately failover DC1,  the script on DC2 complains 
that the ldap addresss is invalid.

Do I keep the scripts at the same ldap://address on BOTH DC's? Is, that 
correct?
Cheers,
Steve