sctp_add_unrec_parm
sctp_add_unrec_parm(ph, &mp, B_FALSE);
sctp_add_unrec_parm(ph, &mp, B_FALSE);
sctp_add_unrec_parm(cph, errmp,
extern void sctp_add_unrec_parm(sctp_parm_hdr_t *, mblk_t **, boolean_t);