Re: TCP connection ignore RST

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From: Rozhuk Ivan <rozhuk.im_at_gmail.com>
Date: Tue, 07 Sep 2021 02:10:34 UTC

On Sat, 4 Sep 2021 13:19:52 +0200
Michael Tuexen <michael.tuexen@lurchi.franken.de> wrote:

> > On 4. Sep 2021, at 01:37, Rozhuk Ivan <rozhuk.im@gmail.com> wrote:
> > 
> > Hi!
> > 
> > 
> > I have strange case: FreeBSD 12.2 ignore TCP RST from windows host
> > and continue retransmitting packets. sockstat show that socket
> > connected even after many tcp rst packets received.
> > 
> > Any ideas how to fix it?  
> Where is the trace taken? On the Windows side or on the FreeBSD side
> or somewhere else? Could you provide the .pcap file?
> 

From FreeBSD side.

https://reviews.freebsd.org/D28142 e82353f84c58da9a5c38bd471a09936c16a5b6ea
https://reviews.freebsd.org/D28143 d05d908d6d3c85479c84c707f931148439ae826b
sysctl net.inet.tcp.tolerate_missing_ts=1
this fixes issue for me.