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Date:      11 May 2000 10:15:55 +0300
From:      Ville-Pertti Keinonen <will@iki.fi>
To:        dillon@apollo.backplane.com (Matthew Dillon)
Cc:        hackers@freebsd.org
Subject:   Re: ipsec 'replay' syslog error messages after reboot of one host
Message-ID:  <863dnplfpw.fsf@not.demophon.com>
In-Reply-To: dillon@apollo.backplane.com's message of "11 May 2000 04:27:38 %2B0300"
References:  <200005110127.SAA61600@apollo.backplane.com>

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dillon@apollo.backplane.com (Matthew Dillon) writes:

>     The question is:  What am I forgetting to do?  Or is this a bug in our
>     IPSEC implementation?

AFAIK this is more or less how it's supposed to work.  IPsec is a
mess.  Security associations are not stateless, ESP provides replay
protection using a sequence number.  Replay-prevention is, however,
optional, and the setkey manual page claims it to be off by default,
so it could be a bug...you might want to try specifying -r 0
explicitly.


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