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Date:      Wed, 11 Jan 2006 17:58:28 -0700
From:      Dan Joumaa <nessup@gmail.com>
To:        freebsd-hackers@freebsd.org
Subject:   Telling BSD to stop resetting the connection!
Message-ID:  <ca819c8f74a6f6518ac6f2b588f56de8@gmail.com>

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Hello,

I'm trying to code a software gateway with divert sockets. So far basic 
things are working, but the net stack constantly resets the connection 
whenever a SYN-ACK is sent to it.

103   9.443254  192.168.1.6 -> 205.166.76.40 TCP pacmand > https [SYN] 
Seq=0 Ack=0 Win=2920 Len=0 MSS=536
104   9.443364  192.168.1.2 -> 205.166.76.40 TCP pacmand > https [SYN] 
Seq=0 Ack=0 Win=2920 Len=0 MSS=536
105   9.443617  192.168.1.6 -> 205.166.76.40 TCP pacmand > https [SYN] 
Seq=0 Ack=0 Win=2920 Len=0 MSS=536
106   9.443654  192.168.1.2 -> 205.166.76.40 TCP pacmand > https [SYN] 
Seq=0 Ack=0 Win=2920 Len=0 MSS=536
107   9.496102 205.166.76.40 -> 192.168.1.2  TCP https > pacmand [SYN, 
ACK] Seq=0 Ack=1 Win=1608 Len=0 MSS=1460
108   9.496185  192.168.1.2 -> 205.166.76.40 TCP pacmand > https [RST] 
Seq=1 Ack=341266652 Win=0 Len=0

(192.168.1.1 = next hop, 192.168.1.2 = this computer, 192.168.1.6 = the 
client)

Any ideas on how to stop the net stack from resetting my connections, 
preferably programmatically?

--ness




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