The pfkey socket buffer can overflow in racoon when SADB is large in RHEL5

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Issue

If there are lot of entries in the kernel's Security Association (SA) database (SADB) there is a likelilhood of pfkey socket buffer overflow during a SADB dump operation.
How many SPD rules can be used with setkey command ?
How many PSK IPsec connection rules can be used with ipsec-tools

Environment

Red Hat Enterprise Linux 5 (RHEL5) - Update 5 and previous
ipsec-tools

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