sctp_feature_off
sctp_feature_off(inp, SCTP_PCB_FLAGS_NODELAY);
sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
sctp_feature_off(inp, set_opt);
sctp_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE);
sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPEERERR);
sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
sctp_feature_off(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
sctp_feature_off(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTHEVNT);
sctp_feature_off(inp, SCTP_PCB_FLAGS_DRYEVNT);
sctp_feature_off(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
sctp_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_NOT_PMTUD);
sctp_feature_off(inp, event_type);
sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO);
sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO);