unregister and free tables memory

Hi,

I would like to free all used memory for snmpd. How can I free or 
unregister used tables in a snmpd load module.

I send a -HUP signal to snmpd process, and my system does not retrieve 
all memory.

    reg =
        *netsnmp_create_handler_registration*("snmpTrapsDestinationTable",
                                            
snmpTrapsDestinationTable_handler,
                                            snmpTrapsDestinationTable_oid,
                                            
snmpTrapsDestinationTable_oid_len,
                                            HANDLER_CAN_RWRITE);

    table_info = *SNMP_MALLOC_TYPEDEF*(netsnmp_table_registration_info);
    netsnmp_table_helper_add_indexes(table_info, ASN_INTEGER,   /* 
index: snmpTrapsDestinationIndex */
                                     0);
    table_info->min_column = COLUMN_SNMPTRAPSDESTIONATIONENABLE;
    table_info->max_column = COLUMN_SNMPTRAPSDESTINATIONIP;

    iinfo = *SNMP_MALLOC_TYPEDEF*(netsnmp_iterator_info);
    iinfo->get_first_data_point =
        snmpTrapsDestinationTable_get_first_data_point;
    iinfo->get_next_data_point =
        snmpTrapsDestinationTable_get_next_data_point;
    iinfo->table_reginfo = table_info;

    *netsnmp_register_table_iterator*(reg, iinfo);


I use

void
*snmpTrapsDestinationTable_removeEntry*(struct
                                      snmpTrapsDestinationTable_entry
                                      *entry)

for freeing the nodes of the tables, but I think that I have to free 
something more, because the system does not retrieve all memory when I 
send a -HUP  signal.


Thanks in advance,
Antonio.

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