SYS_SCTP_PEELOFF=471// { int sctp_peeloff(int sd, uint32_t name); }
SYS_SCTP_GENERIC_SENDMSG=472// { int sctp_generic_sendmsg(int sd, caddr_t msg, int mlen, caddr_t to, __socklen_t tolen, struct sctp_sndrcvinfo *sinfo, int flags); }
SYS_SCTP_GENERIC_SENDMSG_IOV=473// { int sctp_generic_sendmsg_iov(int sd, struct iovec *iov, int iovlen, caddr_t to, __socklen_t tolen, struct sctp_sndrcvinfo *sinfo, int flags); }
SYS_SCTP_GENERIC_RECVMSG=474// { int sctp_generic_recvmsg(int sd, struct iovec *iov, int iovlen, struct sockaddr *from, __socklen_t *fromlenaddr, struct sctp_sndrcvinfo *sinfo, int *msg_flags); }