Easy VPN sever Invalid SPI

I am getting the following messages on my syslog server.

04-06-2010      06:51:41      Local7.Warning      21: Apr  6 13:51:52.434: %CRYPTO-4-RECVD_PKT_INV_SPI: decaps: rec'd IPSEC packet has invalid spi for destaddr=, prot=50, spi=0xFF901AA0(4287634080

I know why it happens but how do I stop it.

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Istvan KalmarHead of IT Security Division Commented:
The received IPsec packet specifies a Security Parameters Index (SPI) that does not exist in the security associations database (SADB). This could be a temporary condition due to:


      Slight differences in the aging of security associations (SAs) between the IPsec peers

      The local SAs having been cleared

      Incorrect packets sent by the IPsec peer

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snoozeitAuthor Commented:
How do I stop these messages from flooding the syslog server.
snoozeitAuthor Commented:
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