From nobody Fri Aug 26 09:26:26 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 4MDZGY5KKMz4ZgWc for ; Fri, 26 Aug 2022 09:26:45 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from hz.grosbein.net (hz.grosbein.net [IPv6:2a01:4f8:c2c:26d8::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "hz.grosbein.net", Issuer "hz.grosbein.net" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4MDZGX4C0sz3pW4 for ; Fri, 26 Aug 2022 09:26:44 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from eg.sd.rdtc.ru (root@eg.sd.rdtc.ru [62.231.161.221] (may be forged)) by hz.grosbein.net (8.16.1/8.16.1) with ESMTPS id 27Q9QZkj075083 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 26 Aug 2022 09:26:35 GMT (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: wojtek@puchar.net Received: from [10.58.0.11] (dadvw [10.58.0.11] (may be forged)) by eg.sd.rdtc.ru (8.16.1/8.16.1) with ESMTPS id 27Q9QXh4043471 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Fri, 26 Aug 2022 16:26:33 +0700 (+07) (envelope-from eugen@grosbein.net) Subject: Re: ipfw nat problem To: Wojciech Puchar References: <623ac39e-2915-463a-9e4c-9f99bae28c69@puchar.net> Cc: freebsd-hackers@freebsd.org From: Eugene Grosbein Message-ID: <57a9cad0-c2ef-6e1f-2185-0f7563fe3758@grosbein.net> Date: Fri, 26 Aug 2022 16:26:26 +0700 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 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 In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,SHORTCIRCUIT autolearn=disabled version=3.4.2 X-Spam-Report: * -0.0 SHORTCIRCUIT No description available. * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on hz.grosbein.net X-Rspamd-Queue-Id: 4MDZGX4C0sz3pW4 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=fail (mx1.freebsd.org: domain of eugen@grosbein.net does not designate 2a01:4f8:c2c:26d8::2 as permitted sender) smtp.mailfrom=eugen@grosbein.net X-Spamd-Result: default: False [-2.10 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_SPF_FAIL(1.00)[-all]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; FROM_EQ_ENVFROM(0.00)[]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org]; MIME_TRACE(0.00)[0:+]; R_DKIM_NA(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; ASN(0.00)[asn:24940, ipnet:2a01:4f8::/32, country:DE]; ARC_NA(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; RCVD_TLS_ALL(0.00)[]; FREEFALL_USER(0.00)[eugen]; TO_MATCH_ENVRCPT_SOME(0.00)[]; FROM_HAS_DN(0.00)[]; DMARC_NA(0.00)[grosbein.net]; TO_DN_SOME(0.00)[]; MID_RHS_MATCH_FROM(0.00)[] X-ThisMailContainsUnwantedMimeParts: N 26.08.2022 15:04, Wojciech Puchar wrote: >>> found a reason. forwarding was set to 0 in sysctl >> >> Never set net.inet.ip.forwarding=1 manually or via /etc/sysctl.conf. >> >> Always use gateway_enable="YES" in /etc/rc.conf, or else system scripts started with devd > > I don't use devd on servers. > >> on any interface creation (tunX, ngX, etc.) will switch forwarding to 0 again. > > Well - i do create tun or other interfaces without problems. Can you point an example of this? Some scripts (f.e. from /etc/devd.conf) invoke /etc/pccard_ether $subsystem start (the name "pccard_ether" is just historic, it serves any cloned network interface). It runs "/etc/rc.d/netif quietstart" $ifn that runs "/etc/rc.d/routing static any $_if" that may reset net.inet.ip.forwarding=0 unless you have gateway_enable="YES" in /etc/rc.conf despite you could have set net.inet.ip.forwarding=1 via sysctl.conf.