RxRPC Kerberos security

configname: CONFIG_RXKAD

Linux Kernel Configuration
└─>Networking support
└─>RxRPC Kerberos security
In linux kernel since version 2.6.22 (release Date: 2007-07-08)  
Provide kerberos 4 and AFS kaserver security handling for AF_RXRPC
through the use of the key retention service.

See Documentation/networking/rxrpc.rst.