Which IP address do we use for a netwrok trace to be run by network engineer?

In trying to resolve an issue with a database link.

our Network group wants to trace the network traffic for a database query.
We need to provide IP addresses for them to monitor the source and target databases.
The source db is a single instance db running on a 6-node veritas cluster with a
virtual IP address for the db.

The target db is a 2-instance RAC db. We use scan listener for RAC.

What IP's do we provide to the network engineers?
Do we give them our actual server address, the VIP addresses, the SCAN listener addresses?

Thanks