RMAN Duplicate Database fails with ORACLE error from auxiliary database: ORA-00600: internal error code, arguments: [krbi_init_fra_metadata_not_backup_ctl]

 RMAN Duplicate Database fails with ORACLE error from auxiliary database: ORA-00600: internal error code, arguments: [krbi_init_fra_metadata_not_backup_ctl]

Issue: While using RMAN Duplicate Database from Standby Database to clone fails with below error:

ORACLE error from auxiliary database: ORA-00600: internal error code, arguments: [krbi_init_fra_metadata_not_backup_ctl]

This is known bug as per MOS Bug 21641760

However the oracle support gave below suggestion to try and it worked. 

Disable FRA ie alter system set db_recovery_file_dest='';