SCTP Function Code,SCTP Function Name,Reference
0x0001,DDP Stream Session Initiate,[RFC5043]
0x0002,DDP Stream Session Accept,[RFC5043]
0x0003,DDP Stream Session Reject,[RFC5043]
0x0004,DDP Stream Session Terminate,[RFC5043]
0x0005,Enhanced DDP Stream Session Initiate,[RFC6581]
0x0006,Enhanced DDP Stream Session Accept,[RFC6581]
0x0007,Enhanced DDP Stream Session Reject,[RFC6581]
0x0008-0xFFFE,Unassigned,
0xFFFF,Reserved (Experimental),[RFC6580]