Configuring the ip-can-change Subscription
You use the steps below to Subscribe to IP-CAN-CHANGE events at the PCRF and apply the value in the AN-GW-Address AVP from the PCRF as the S-GW IP address.
To
obtain the S-GW IP address for mobile originating and terminating scenarios and
provide that data in CDRs for RADIUS, diameter and local CSVs: