From nobody Sun Dec 7 22:28:49 2025 X-Original-To: freebsd-current@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 4dPfsj6Vx6z6HvxK for ; Sun, 07 Dec 2025 22:28:57 +0000 (UTC) (envelope-from imb@protected-networks.net) Received: from mail.protected-networks.net (mail.protected-networks.net [IPv6:2001:470:8d59:1::8]) (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 "mail.protected-networks.net", Issuer "R13" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4dPfsh3NpYz3trt for ; Sun, 07 Dec 2025 22:28:56 +0000 (UTC) (envelope-from imb@protected-networks.net) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=protected-networks.net header.s=201508 header.b="I gGVIWC"; dmarc=pass (policy=reject) header.from=protected-networks.net; spf=pass (mx1.freebsd.org: domain of imb@protected-networks.net designates 2001:470:8d59:1::8 as permitted sender) smtp.mailfrom=imb@protected-networks.net DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d= protected-networks.net; h=content-transfer-encoding:content-type :content-type:subject:subject:from:from:content-language :user-agent:mime-version:date:date:message-id; s=201508; t= 1765146529; bh=du76x/L66HCQg5i4/fx0BNAkBJDlfWd+z//FngukTLI=; b=I gGVIWCrQazkaTgrBadnbDqZXmCZO649xq+MsoILh5MHA1EiMnFmdwUrEFNqLyNny s61qkrVA2vIMlFY3nkTEGG2U/zMR1rkGVx/JUuYr95MtlcHoflfbAzWuOXTc9SLH yp1kXEKemfRmBPNf+D/tsEiKyHItgq1wWj99A1KUhs= Received: from [192.168.1.9] (d5540.auburn.protected-networks.net [192.168.1.9]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: imb@mail.protected-networks.net) by mail.protected-networks.net (Postfix) with ESMTPSA id E8647AD4F for ; Sun, 07 Dec 2025 17:28:49 -0500 (EST) Message-ID: <20350073-abc5-4116-9fd7-8e8f708a26d4@protected-networks.net> Date: Sun, 7 Dec 2025 17:28:49 -0500 List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@FreeBSD.org MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-NZ To: freebsd-current From: Michael Butler Subject: fib selection and persistence using ipfw Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spamd-Bar: --- X-Spamd-Result: default: False [-3.58 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.58)[-0.580]; DMARC_POLICY_ALLOW(-0.50)[protected-networks.net,reject]; R_DKIM_ALLOW(-0.20)[protected-networks.net:s=201508]; R_SPF_ALLOW(-0.20)[+mx]; MIME_GOOD(-0.10)[text/plain]; RCVD_VIA_SMTP_AUTH(0.00)[]; ASN(0.00)[asn:6939, ipnet:2001:470::/32, country:US]; RCVD_COUNT_ONE(0.00)[1]; RCPT_COUNT_ONE(0.00)[1]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_ALL(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; ARC_NA(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; BLOCKLISTDE_FAIL(0.00)[2001:470:8d59:1::8:server fail]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TO_DN_ALL(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-current@freebsd.org]; MLMMJ_DEST(0.00)[freebsd-current@freebsd.org]; DKIM_TRACE(0.00)[protected-networks.net:+] X-Rspamd-Queue-Id: 4dPfsh3NpYz3trt Having two upstream providers, I'm trying to enforce symmetric routing which, in OpenBSD's pf config can be implemented using .. # Inbound control-plane to the firewall itself (per-WAN reply-to for symmetry) pass in on $wan_a proto { tcp, udp, icmp } to ($wan_a) \ reply-to ($wan_a $gw_a) keep state pass in on $wan_b proto { tcp, udp, icmp } to ($wan_b) \ reply-to ($wan_b $gw_b) keep state I've tried all manner of ipfw packet tagging in the hope that it would yield similar results, e.g. setfib 1 ip from any to any recv tap0 setfib 1 ip from any to any tagged 1 count tag 1 ip from any to any recv tap0 [ .. ] check-state allow ip from .. keep-state deny log ip from any to any Is anyone else doing something like this on -current? Michael