default or selected kernelversion does not have config value CONFIG_CONFIG_SUNRPC_DISABLE_INSECURE_ENCTYPES.
Result is shown for kernelversion 6.5.1
Secure RPC: Disable insecure Kerberos encryption types
configname: CONFIG_CONFIG_SUNRPC_DISABLE_INSECURE_ENCTYPES
Linux Kernel Configuration
└─>File systems
└─>Network File Systems
└─>Secure RPC: Disable insecure Kerberos encryption types
In linux kernel since version 5.1 (release Date: 2019-05-05)
Choose Y here to disable the use of deprecated encryption types
with the Kerberos version 5 GSS-API mechanism (RFC 1964). The
deprecated encryption types include DES-CBC-MD5, DES-CBC-CRC,
and DES-CBC-MD4. These types were deprecated by RFC 6649 because
they were found to be insecure.
N is the default because many sites have deployed KDCs and
keytabs that contain only these deprecated encryption types.
Choosing Y prevents the use of known-insecure encryption types
but might result in compatibility problems.
with the Kerberos version 5 GSS-API mechanism (RFC 1964). The
deprecated encryption types include DES-CBC-MD5, DES-CBC-CRC,
and DES-CBC-MD4. These types were deprecated by RFC 6649 because
they were found to be insecure.
N is the default because many sites have deployed KDCs and
keytabs that contain only these deprecated encryption types.
Choosing Y prevents the use of known-insecure encryption types
but might result in compatibility problems.