sctp_init_ack
sm->sctpchnk.InitAck = (struct sctp_init_ack *) ((char *) chunk_hdr + sizeof(struct sctp_chunkhdr));
param = (struct sctp_paramhdr *)((char *)sm->sctpchnk.InitAck + sizeof(struct sctp_init_ack));
struct sctp_init_ack *InitAck; /**< Pointer to Init Chunk */
struct sctp_init_ack *init_ack;