ctl_ha_msg_iid
if (len < offsetof(struct ctl_ha_msg_iid, data[0])) {
__func__, len, offsetof(struct ctl_ha_msg_iid, data[0]));
if (len < offsetof(struct ctl_ha_msg_iid, data[i])) {
__func__, len, offsetof(struct ctl_ha_msg_iid, data[i]));
struct ctl_ha_msg_iid iid;