if ((sptr_advertisement->ls_header.type == OSPF_LS_TYPE_11) && (sptr_interface->sptr_area->flags._bit.stub == TRUE))		{		OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF, "OSPF: Opaque Type 11 Link advertisements are not flooded into/throughout stub areas\r\n");		return (GOOD_RECEIVE);		/* Opaque Type 11 link advertisements are not flooded into/throughout stub areas - see section 3.6, (pages 35-36) */		}#endif /* __OPAQUE_LSA__ */#if defined (__NSSA__)	if (sptr_advertisement->ls_header.type == OSPF_LS_MULTICAST)		{		OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF, "OSPF: OSPF_LS_MULTICAST received .. \r\n");		return (GOOD_RECEIVE);		}	if ((sptr_advertisement->ls_header.type == OSPF_LS_AS_EXTERNAL) && (sptr_interface->sptr_area->flags._bit.nssa == TRUE))		{		OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF, "OSPF: AS External Link advertisements received on an NSSA area \r\n");		}	/* opaque lsa flood type 11 into nssa area jkw */#if defined (__OPAQUE_LSA__)	if ((sptr_advertisement->ls_header.type == OSPF_LS_TYPE_11) && (sptr_interface->sptr_area->flags._bit.nssa == TRUE))		{		OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF, "OSPF: Type 11 Link advertisements received on an NSSA area \r\n");		}#endif /* __OPAQUE_LSA__ */#endif /*__NSSA__*/#if defined (__OPAQUE_LSA__)	if (sptr_advertisement->ls_header.type == OSPF_LS_TYPE_9)		{		link_state_id = ((OSPF_TYPE_9_LINK_ADVERTISEMENT_HEADER *)sptr_advertisement)->ls_header.id.lsid;		link_state_id = net_to_host_long(link_state_id);		id.lsid = link_state_id;		opaque_type = id.opaque_lsid.opaque_type;		opaque_type = ((OSPF_TYPE_9_LINK_ADVERTISEMENT_HEADER *)sptr_advertisement)->ls_header.id.opaque_lsid.opaque_type;		sptr_opaque_callback = ospfRetrieveOpaqueCallback(lsa_type, opaque_type);		if (sptr_opaque_callback != NULL)			{			sptr_opaque_callback->opaque_lsa_received_hook((UNION_OSPF_LINK_STATE_ADVERTISEMENT *)sptr_advertisement);			}		}	else if (sptr_advertisement->ls_header.type == OSPF_LS_TYPE_10)		{		link_state_id = ((OSPF_TYPE_10_LINK_ADVERTISEMENT_HEADER *)sptr_advertisement)->ls_header.id.lsid;		link_state_id = net_to_host_long(link_state_id);		id.lsid = link_state_id;		opaque_type = id.opaque_lsid.opaque_type;		sptr_opaque_callback = ospfRetrieveOpaqueCallback(lsa_type, opaque_type);		if (sptr_opaque_callback != NULL)			{			sptr_opaque_callback->opaque_lsa_received_hook((UNION_OSPF_LINK_STATE_ADVERTISEMENT *)sptr_advertisement);			}		}	else if (sptr_advertisement->ls_header.type == OSPF_LS_TYPE_11)		{		link_state_id = ((OSPF_TYPE_11_LINK_ADVERTISEMENT_HEADER *)sptr_advertisement)->ls_header.id.lsid;		link_state_id = net_to_host_long(link_state_id);		id.lsid = link_state_id;		sptr_opaque_callback = ospfRetrieveOpaqueCallback(lsa_type, opaque_type);		if (sptr_opaque_callback != NULL)			{			sptr_opaque_callback->opaque_lsa_received_hook((UNION_OSPF_LINK_STATE_ADVERTISEMENT *)sptr_advertisement);			}		}#endif /* __OPAQUE_LSA__ */	/* section 13, item (4) - (page 133-134) */	/* SPR#76812 -- Begin */	link_state_id = sptr_advertisement->ls_header.id;	link_state_id = net_to_host_long (link_state_id);	advertising_router = sptr_advertisement->ls_header.advertising_router;	advertising_router = net_to_host_long (advertising_router);	if(sptr_advertisement->ls_header.type == OSPF_LS_NETWORK)	{		sptr_database_entry = ospf_find_network_LSA(sptr_interface->sptr_area,link_state_id);	}	else	{		sptr_database_entry = ospf_find_LSA(sptr_interface->sptr_area, link_state_id, advertising_router, sptr_advertisement->ls_header.type);	}	if (sptr_database_entry != NULL)		{		database_information.found_link_state_advertisement_in_database = TRUE;		}	else		{		database_information.found_link_state_advertisement_in_database = FALSE;		}	age = sptr_advertisement->ls_header.age;	age = net_to_host_short (age);	if (((age == OSPF_MAXIMUM_AGE) &&		(database_information.found_link_state_advertisement_in_database == FALSE))#if defined (__RFC_2328__)		&& ((ospf_check_if_neighbor_exchange_or_loading(sptr_neighbor)))#endif /*__RFC_2328__*/		)		{		OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF, "OSPF: section 13, item (4)    In file ospf_receive_update.c.  Function: ospf_process_link_state_advertisement\r\n");		/* section 13, item (4a) - (page 134) */		ospf_send_direct_acknowledgement (sptr_advertisement, sptr_interface, sptr_neighbor);		return (GOOD_RECEIVE);		}	else		{		/* section 13, item (5) - (page 134) */		if (database_information.found_link_state_advertisement_in_database == TRUE)			{			/* SPR#76812 */			database_information.sptr_database_entry = sptr_database_entry;			/* SPR 84312 -- Begin */			current_time = ospf_get_system_elapsed_time_second ();			/* SPR 84312 -- End */			database_information.time_difference = current_time - database_information.sptr_database_entry->ls_database_time_stamp;			request_is_more_recent = ospf_check_if_more_recent (&sptr_advertisement->ls_header,				&database_information.sptr_database_entry->advertisement.sptr_router->ls_header, database_information.time_difference);			}	 /* if finished */		else			{			database_information.sptr_database_entry = NULL;			request_is_more_recent = PASS;			}		if (request_is_more_recent == PASS)			{			OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF, "OSPF: section 13, item (5) process_more_recent_link_state_adv\r\n");			/* section 13, items (5a-5f) - (page 134-135) */			ospf_process_more_recent_link_state_advertisement (&database_information, sptr_advertisement, sptr_interface, sptr_neighbor,				source_address, destination_address);            database_information.new_advertisement.sptr_router = sptr_advertisement;		    ospf_remove_request_from_neighbor_request_list (sptr_neighbor, &(database_information.new_advertisement));		    database_information.new_advertisement.sptr_router = NULL;			}		else			{			OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF, "OSPF: section 13, item (6) NOT a more recent request\r\n");			/* section 13, item (6) - (page 135) */			database_entry.advertisement.sptr_router = sptr_advertisement;			sptr_ls_request = ospf_find_advertisement_on_neighbors_ls_request_list (sptr_neighbor, &database_entry);			if (sptr_ls_request != NULL)			/* an error has occurred in the Database Exchange process */				{				OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF, "OSPF: Error in the Database Exchange process\r\n");				ospf_execute_neighbor_state_machine (OSPF_BAD_LINK_STATE_REQUEST, sptr_neighbor->state, sptr_interface, sptr_neighbor);				return (OSPF_ERROR_REQUEST_BOGUS);				}			else				{				OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF, "OSPF: section 13, item (7) Check if same instance\r\n");				/* section 13, item (7) - (page 135) */				test_return_type = ospf_check_if_same_instance (&database_information.sptr_database_entry->advertisement.sptr_router->ls_header,					&sptr_advertisement->ls_header, database_information.time_difference);				if (test_return_type == PASS)					{					/* section 13, item (7a) - (page 135) */					sptr_retransmission_node = ospf_find_advertisement_on_neighbors_retransmit_list (sptr_neighbor,						database_information.sptr_database_entry);					if (sptr_retransmission_node != NULL)						{						ospf_remove_node_from_neighbors_retransmit_queue (sptr_neighbor, sptr_retransmission_node);						ospf_remove_neighbor_from_advertisements_retransmit_list (database_information.sptr_database_entry, sptr_neighbor);					/* section 13, item (7b) - (page 135) */						if (sptr_interface->state == OSPF_INTERFACE_BACKUP_DESIGNATED_ROUTER)							{						  	/*							 * The folowing is decremented in function ospf_send_direct_acknowledgement when neighbor is passed as NULL (MULTICASTED)							 */							ospf_add_entry_to_interfaces_delayed_acknowledgement_list (sptr_interface,database_information.sptr_database_entry);							}						}					else						{						ospf_send_direct_acknowledgement (sptr_advertisement, sptr_interface, sptr_neighbor);						}					}				else					{					OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF, "OSPF: section 13, item (8)\r\n");					/* section 13, item (8) - (page 135) */					age = database_information.sptr_database_entry->advertisement.sptr_router->ls_header.age;					age = net_to_host_short (age);					sequence_number = database_information.sptr_database_entry->advertisement.sptr_router->ls_header.sequence_number;					sequence_number = net_to_host_long (sequence_number);					if ((age >= OSPF_MAXIMUM_AGE) && (sequence_number == OSPFMAXLSSEQ))						{						return (GOOD_RECEIVE);						}					else						{						/* 	Refer section 13, item (8)   */	  /*#$-NOTE:note20-$#*/						OSPF_PRINTF_ALARM (OSPF_ALARM_PRINTF, "OSPF: section 13, item (8) Database copy is more recent.  \r\n");#if defined (__RFC_2328__)						/* RFC 2178 G.4 */						if (database_information.time_difference < OSPF_MinLSArrival)							{							return (GOOD_RECEIVE);							}						else							{							send_database_copy_back_to_sending_neighbor(database_information.sptr_database_entry, sptr_neighbor, sptr_interface);							}#else /*__RFC_2328__*/						ospf_send_direct_acknowledgement (sptr_advertisement, sptr_interface, sptr_neighbor);#endif /*__RFC_2328__*/						}					}				}			}		}	return (GOOD_RECEIVE);}/****************************************************************************************//* section 13, item (5) - (page 134) */static void ospf_process_more_recent_link_state_advertisement (OSPF_DATABASE_INFORMATION_STRUCTURE *sptr_database_information,	OSPF_ROUTER_LINK_ADVERTISEMENT_HEADER *sptr_advertisement,OSPF_INTERFACE *sptr_interface,OSPF_NEIGHBOR *sptr_neighbor,	ULONG source_address,ULONG destination_address){	enum TEST test_return_type;	enum BOOLEAN advertisement_was_flooded_back_out_receiving_interface;	ULONG advertising_router;	/*	 * The pointer  "sptr_advertisement" points to the packet passed by the lower layer;	 * so, should not be used as is. Make a copy eventually.	 */	OSPF_ROUTER_LINK_ADVERTISEMENT_HEADER *sptr_advertisement_to_be_installed_in_lsdb;	UNION_OSPF_LINK_STATE_ADVERTISEMENT	 *sptr_union_new_advertisement;	enum TEST 		status_of_advertisements_copy_for_installation_in_lsdb;	enum TEST different_lsa;	/* section 13, item (5a) - (page 134) */	OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF, "OSPF: Entering ospf_process_more_recent_link_state_advertisement\r\n");	if ((sptr_database_information->found_link_state_advertisement_in_database == TRUE) &&#if defined (__RFC_2328__)		(ospf_is_lsa_self_originated (sptr_advertisement) == false) &&#endif /*__RFC_2328__*/		/* RFC 2178 G.5 */		(sptr_database_information->time_difference < OSPF_MinLSArrival))		{		OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF, "OSPF: Discarded new advertisement because the database copy was installed less than OSPF_MinLSArrival seconds ago\r\n");		return;		}	else		{		/* section 13, item (5f) - (page 135) */		test_return_type = ospf_check_if_advertisements_link_state_id_is_equal_to_one_of_the_routers_own_IP_interface_addresses (			sptr_advertisement);		advertising_router = sptr_advertisement->ls_header.advertising_router;