The kernel modules can use two different methods of automatic loading:
/etc/modules.conf; Load the modules before the rest of the services. Refer to manpage or typing
man 5 modules.conf for more help. Sample
# modules.conf - configuration file for loading kernel modules
/etc/rc.local: Using this method loads the modules after all other services are started, Sample
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.