From owner-freebsd-net@freebsd.org Mon Jan 6 17:11:39 2020 Return-Path: Delivered-To: freebsd-net@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 0D40E1F54CD for ; Mon, 6 Jan 2020 17:11:39 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from hz.grosbein.net (hz.grosbein.net [IPv6:2a01:4f8:c2c:26d8::2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "hz.grosbein.net", Issuer "hz.grosbein.net" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 47s29Q0YP4z3xpC for ; Mon, 6 Jan 2020 17:11:37 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from eg.sd.rdtc.ru (eg.sd.rdtc.ru [IPv6:2a03:3100:c:13:0:0:0:5]) by hz.grosbein.net (8.15.2/8.15.2) with ESMTPS id 006HBUD9058551 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 6 Jan 2020 17:11:31 GMT (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: danielmorandini@me.com Received: from [10.58.0.4] ([10.58.0.4]) by eg.sd.rdtc.ru (8.15.2/8.15.2) with ESMTPS id 006HBSGQ056510 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NOT); Tue, 7 Jan 2020 00:11:28 +0700 (+07) (envelope-from eugen@grosbein.net) Subject: Re: lagg interface To: Daniel Morandini , freebsd-net@freebsd.org References: <19FC0FD7-A2C4-442A-BCB2-0CF8D0726EA1@me.com> From: Eugene Grosbein Message-ID: Date: Tue, 7 Jan 2020 00:11:20 +0700 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=0.3 required=5.0 tests=BAYES_00,LOCAL_FROM, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.2 X-Spam-Report: * -2.3 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * -0.0 SPF_PASS SPF: sender matches SPF record * 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record * 2.6 LOCAL_FROM From my domains X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on hz.grosbein.net X-Rspamd-Queue-Id: 47s29Q0YP4z3xpC X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=permerror (mx1.freebsd.org: domain of eugen@grosbein.net uses mechanism not recognized by this client) smtp.mailfrom=eugen@grosbein.net X-Spamd-Result: default: False [-3.84 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[grosbein.net]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; R_SPF_PERMFAIL(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; IP_SCORE(-1.74)[ip: (-4.71), ipnet: 2a01:4f8::/29(-2.44), asn: 24940(-1.51), country: DE(-0.02)]; FREEMAIL_TO(0.00)[me.com]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:2a01:4f8::/29, country:DE]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 06 Jan 2020 17:11:39 -0000 06.01.2020 22:46, Eugene Grosbein wrote: > So, you need L3 traffic sharing. One example is using ipfw tables. > For N external links (phones) you'd need (N-1) tables, one table for a link excluding first one. > With two links, you need only one table listing clients using second link: > > lan="10.0.0.0/8,192.168.0.0/16" > ipfw disable one_pass > ipfw table 1 add 10.0.10.200 # a client using second link > ipfw table 1 add 192.168.0.5 # another client for second link > > # translate incoming traffic > ipfw delete 50 > ipfw add 50 nat 123 ip from any to any in recv ipheth0 > ipfw add 50 nat 123 ip from any to any in recv ipheth1 Correction: latest rule should use "nat 124" instead of "nat 123" assuming there are two NAT instances configured each for its own link: nat 123 for ipheth0, nat 124 for ipheth1. > # insert your filtering rules between 50 and 50000 > > # translate and forward outgoing traffic > # clients of second link processed later with rules 50110 etc. > ipfw add 50000 skipto 50110 ip from not 'table(1)' to not $lan out > > # other clients not mentioned in the table are NAT-ed and forwarded here > ipfw add 50010 nat 123 ip from $lan to not $lan out > ipfw add 50020 fwd $gw1 ip from $nat123_extip to any out > > # clients using second link are NAT-ed and forwarded here > ipfw add 50110 nat 124 ip from $lan to not $lan out > ipfw add 50120 fwd $gw2 ip from $nat124_extip to any out