Just unload the SCTP module by the folllowing commans
$ [sudo] modprobe -r sctp
Some old Linux distribution doesn't have a module unload routine. You'll need to blacklist the module in modprobe.conf before it ever loads on bootup. Once its loaded it can't be unloaded.
$ [sudo] rmmod -f sctp
you need CONFIG_MODULE_FORCE_UNLOAD. Without it rmmod -f doesn't work.