From nobody Tue Sep 07 09:57:10 2021 X-Original-To: freebsd-net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id C8A0617B3EA6; Tue, 7 Sep 2021 09:57:13 +0000 (UTC) (envelope-from michael.tuexen@lurchi.franken.de) Received: from drew.franken.de (drew.ipv6.franken.de [IPv6:2001:638:a02:a001:20e:cff:fe4a:feaa]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.franken.de", Issuer "Sectigo RSA Domain Validation Secure Server CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4H3gfd4qw6z3Khg; Tue, 7 Sep 2021 09:57:13 +0000 (UTC) (envelope-from michael.tuexen@lurchi.franken.de) Received: from smtpclient.apple (unknown [IPv6:2a02:8109:1140:c3d:89ea:c2fd:ec77:7430]) (Authenticated sender: lurchi) by mail-n.franken.de (Postfix) with ESMTPSA id EF146721E2828; Tue, 7 Sep 2021 11:57:10 +0200 (CEST) Content-Type: text/plain; charset=us-ascii List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@freebsd.org Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.120.0.1.13\)) Subject: Re: TCP connection ignore RST From: Michael Tuexen In-Reply-To: <20210907124730.7a4a3b9a@rimwks.local> Date: Tue, 7 Sep 2021 11:57:10 +0200 Cc: freebsd-net@freebsd.org, freebsd-hackers@freebsd.org Content-Transfer-Encoding: quoted-printable Message-Id: 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> <20210907124730.7a4a3b9a@rimwks.local> To: Rozhuk Ivan X-Mailer: Apple Mail (2.3654.120.0.1.13) X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=disabled version=3.4.1 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on mail-n.franken.de X-Rspamd-Queue-Id: 4H3gfd4qw6z3Khg X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; none X-Spamd-Result: default: False [-4.00 / 15.00]; TAGGED_RCPT(0.00)[]; REPLY(-4.00)[] X-ThisMailContainsUnwantedMimeParts: N > On 7. Sep 2021, at 11:47, Rozhuk Ivan wrote: >=20 > On Tue, 7 Sep 2021 10:47:01 +0200 > Michael Tuexen wrote: >=20 >>>>> 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. >>>>>=20 >>>>> Any ideas how to fix it? =20 >>>> Where is the trace taken? On the Windows side or on the FreeBSD >>>> side or somewhere else? Could you provide the .pcap file? >>>>=20 >>>=20 >>> =46rom FreeBSD side. >>>=20 >>> https://reviews.freebsd.org/D28142 >>> e82353f84c58da9a5c38bd471a09936c16a5b6ea >>> https://reviews.freebsd.org/D28143 >>> d05d908d6d3c85479c84c707f931148439ae826b sysctl >>> net.inet.tcp.tolerate_missing_ts=3D1 this fixes issue for me. =20 >> 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? >>=20 >=20 > System build from: > commit 8c01699f9194cfa3805ac734ae912529a10c063a > CommitDate: Wed Jan 20 14:40:13 2021 +0100 > Add some examples to script.1... >=20 > It is not "clean" 12.2, and it is a bit early than commits with fixes. Ahh, OK. I was assuming that it is 12.2. Sorry for the confusion on my side. The following commit should fix your issue: = https://cgit.FreeBSD.org/src/commit/?id=3Dd05d908d6d3c85479c84c707f9311484= 39ae826b Best regards Michael=