OSPF_MIN_HEADER_SIZE
if (fraglen < OSPF_MIN_HEADER_SIZE + OSPF_MIN_HELLO_HEADER_SIZE)
if ((fraglen < OSPF_MIN_HEADER_SIZE) ||
if (fraglen < OSPF_MIN_HEADER_SIZE + OSPF_MIN_DB_HEADER_SIZE) {
if (fraglen < OSPF_MIN_HEADER_SIZE + OSPF_MIN_LSR_HEADER_SIZE) {
if (fraglen < OSPF_MIN_HEADER_SIZE + OSPF_MIN_LSU_HEADER_SIZE) {