SCTP protocol connection tracking support

configname: CONFIG_NF_CT_PROTO_SCTP

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Network packet filtering framework (Netfilter)
└─>Core Netfilter Configuration
└─>SCTP protocol connection tracking support
In linux kernel since version 2.6.15 (release Date: 2006-01-02)  
With this option enabled, the layer 3 independent connection
tracking code will be able to do state tracking on SCTP connections.

If unsure, say Y.