http://www.rfc-editor.org/rfc/rfc8127.txt
RFC 8127: Mobile Access Gateway Configuration Parameters Controlled by the Local Mobility Anchor, D. Patki, S. Gundavelli, J. Lee, Q. Fu, L. Bertz2017-08-01T23:00:00-00:00This specification defines a new extension, LMA-Controlled-MAG-Session-Params, to Proxy Mobile IPv6. This option can be used by the local mobility anchor (LMA) in a Proxy Mobile IPv6 domain for signaling a mobile access gateway (MAG) on enforcing specific values for various configuration parameters such as heartbeat and binding refresh parameters.