From nobody Wed Aug 31 13:25:59 2022 X-Original-To: freebsd-hackers@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 4MHlLP1lZMz4bQ46 for ; Wed, 31 Aug 2022 13:26:05 +0000 (UTC) (envelope-from wojtek@puchar.net) Received: from puchar.net (puchar.net [194.1.144.90]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4MHlLM5zdwz3jxr for ; Wed, 31 Aug 2022 13:26:03 +0000 (UTC) (envelope-from wojtek@puchar.net) Received: Received: from 127.0.0.1 (localhost [127.0.0.1]) by puchar.net (8.15.2/8.16.1) with ESMTPS id 27VDQ0ZD098414 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 31 Aug 2022 15:26:00 +0200 (CEST) (envelope-from wojtek@puchar.net) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=puchar.net; s=default; t=1661952361; bh=08sj/z2FimAIVurjKOqUgAnBYkUmlwxiH0OlbjCtQy4=; h=Date:From:To:cc:Subject:In-Reply-To:References; b=R3Zvhvc+pOQBAHdxuQVjUUV0nBMYJtUhIVGNPaB8dr8X16WACP47iccJF9PdKk9pf +msuAZhJBkK78N9dx45mg3qTFSs4w3a2tcSUVrdaCqUNgoUTeV5X5N+B7ljg1OsCmw SPlk+B5clpSevFfJnhJQa207sO3pjzWqSdI0vpJw= Received: from wojtek.intra (localhost [127.0.0.1]) by wojtek.intra (8.16.1/8.16.1) with ESMTP id 27VDPxax093726; Wed, 31 Aug 2022 15:25:59 +0200 (CEST) (envelope-from wojtek@puchar.net) Received: from localhost (wojtek@localhost) by wojtek.intra (8.16.1/8.16.1/Submit) with ESMTP id 27VDPxQY093723; Wed, 31 Aug 2022 15:25:59 +0200 (CEST) (envelope-from wojtek@puchar.net) X-Authentication-Warning: wojtek.intra: wojtek owned process doing -bs Date: Wed, 31 Aug 2022 15:25:59 +0200 (CEST) From: Wojciech Puchar To: Eugene Grosbein cc: freebsd-hackers@freebsd.org Subject: Re: ipfw nat problem In-Reply-To: <71545bb7-a5ea-510f-8d67-4f07fe0887ae@grosbein.net> Message-ID: <6943ac7f-d8dc-c4f7-55c1-aff365be246a@puchar.net> References: <623ac39e-2915-463a-9e4c-9f99bae28c69@puchar.net> <57a9cad0-c2ef-6e1f-2185-0f7563fe3758@grosbein.net> <90b59493-95d6-5b2a-b0dc-2fece0a9df7b@puchar.net> <71545bb7-a5ea-510f-8d67-4f07fe0887ae@grosbein.net> List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed X-Rspamd-Queue-Id: 4MHlLM5zdwz3jxr X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=puchar.net header.s=default header.b=R3Zvhvc+; dmarc=none; spf=pass (mx1.freebsd.org: domain of wojtek@puchar.net designates 194.1.144.90 as permitted sender) smtp.mailfrom=wojtek@puchar.net X-Spamd-Result: default: False [-3.50 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-0.999]; NEURAL_HAM_SHORT(-1.00)[-0.999]; R_SPF_ALLOW(-0.20)[+mx]; R_DKIM_ALLOW(-0.20)[puchar.net:s=default]; MIME_GOOD(-0.10)[text/plain]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org]; FROM_EQ_ENVFROM(0.00)[]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; RCPT_COUNT_TWO(0.00)[2]; RCVD_TLS_LAST(0.00)[]; DKIM_TRACE(0.00)[puchar.net:+]; RCVD_COUNT_THREE(0.00)[3]; ASN(0.00)[asn:43476, ipnet:194.1.144.0/24, country:PL]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_SOME(0.00)[]; DMARC_NA(0.00)[puchar.net]; HAS_XAW(0.00)[]; MID_RHS_MATCH_FROM(0.00)[] X-ThisMailContainsUnwantedMimeParts: N On Fri, 26 Aug 2022, Eugene Grosbein wrote: > 26.08.2022 17:42, Wojciech Puchar wrote: > >> Anyway - with ip.forwarding on ssh still disconnect randomly. Just after much larger amount of data transmitted (like 10-100MB, not <1MB) >> >> Just on this server. Any ideas what may be wrong? > > Maybe you use ipfw nat (or natd) and forgot to disable TSO on external interface, > so some packets get broken as TSO is not compatible with libalias. Right. TSO. Now it's fixed.