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Date:      Tue, 7 Sep 2021 12:47:30 +0300
From:      Rozhuk Ivan <rozhuk.im@gmail.com>
To:        Michael Tuexen <michael.tuexen@lurchi.franken.de>
Cc:        freebsd-net@freebsd.org, freebsd-hackers@freebsd.org
Subject:   Re: TCP connection ignore RST
Message-ID:  <20210907124730.7a4a3b9a@rimwks.local>
In-Reply-To: <1804249E-FD55-4A4A-9895-BCEDF2323137@lurchi.franken.de>
References:  <20210904023730.5eddd6fd@rimwks.local> <927CA9E9-AB74-443D-83A7-931325DB7686@lurchi.franken.de> <20210907051034.5669a02d@rimwks.local> <1804249E-FD55-4A4A-9895-BCEDF2323137@lurchi.franken.de>

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On Tue, 7 Sep 2021 10:47:01 +0200
Michael Tuexen <michael.tuexen@lurchi.franken.de> wrote:

> >>> 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.  
> That was my first guess, but after double checking, this code is not
> present in FreeBSD 12.2. However, it is present in stable/12.
> So could it be that you are using stable/12 and not 12.2?
> 

System build from:
commit 8c01699f9194cfa3805ac734ae912529a10c063a
CommitDate: Wed Jan 20 14:40:13 2021 +0100
Add some examples to script.1...

It is not "clean" 12.2, and it is a bit early than commits with fixes.



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