IPC does not appear in My Downloads in https://support.broadcom.com.
How can IPC be downloaded?
z/OS
IPC
The product IPC is bundled with Datacom/DB and Ideal.
To download it follow these steps:
IPC is one of the components that can be downloaded for that product.
For IPC 15.1 it looks like this:
CA IPC FOR Z/OS 15.1 0000
DVD500002324.pax.Z
CA IPC FOR Z/OS 15.1 0000
VQ.V15R1.ZOSMF.pax.Z