sctp_ipv6addr_param
struct sctp_ipv6addr_param v6;
struct sctp_ipv6addr_param *v6;
if (ntohs(param->v6.param_hdr.length) < sizeof(struct sctp_ipv6addr_param))
int length = sizeof(struct sctp_ipv6addr_param);
if (length != sizeof(struct sctp_ipv6addr_param))