From nobody Fri Apr 22 23:39:30 2022 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 D19291A21A76 for ; Fri, 22 Apr 2022 23:39:32 +0000 (UTC) (envelope-from glebius@freebsd.org) Received: from cell.glebi.us (glebi.us [162.251.186.162]) (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 "cell.glebi.us", Issuer "cell.glebi.us" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4KlW8h06slz3CnB for ; Fri, 22 Apr 2022 23:39:31 +0000 (UTC) (envelope-from glebius@freebsd.org) Received: from cell.glebi.us (localhost [127.0.0.1]) by cell.glebi.us (8.16.1/8.16.1) with ESMTPS id 23MNdUIB063526 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Fri, 22 Apr 2022 16:39:30 -0700 (PDT) (envelope-from glebius@freebsd.org) Received: (from glebius@localhost) by cell.glebi.us (8.16.1/8.16.1/Submit) id 23MNdUk4063525; Fri, 22 Apr 2022 16:39:30 -0700 (PDT) (envelope-from glebius@freebsd.org) X-Authentication-Warning: cell.glebi.us: glebius set sender to glebius@freebsd.org using -f Date: Fri, 22 Apr 2022 16:39:30 -0700 From: Gleb Smirnoff To: Michael Butler Cc: Florian Smeets , freebsd-current@freebsd.org Subject: Re: IPv6 TCP: first two SYN packets to local v6 unicast addresses ignored Message-ID: References: <131c363a-7b7d-a106-5b8a-6838e7a66567@smeets.xyz> <9679642b-5de6-28be-a64b-07375c3efeba@smeets.xyz> <0c261aa6-93d4-5627-d44d-f160323a7ca3@protected-networks.net> 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 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0c261aa6-93d4-5627-d44d-f160323a7ca3@protected-networks.net> X-Rspamd-Queue-Id: 4KlW8h06slz3CnB X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=softfail (mx1.freebsd.org: 162.251.186.162 is neither permitted nor denied by domain of glebius@freebsd.org) smtp.mailfrom=glebius@freebsd.org X-Spamd-Result: default: False [-1.25 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.88)[-0.881]; FREEFALL_USER(0.00)[glebius]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; TO_DN_SOME(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; MIME_GOOD(-0.10)[text/plain]; HAS_XAW(0.00)[]; DMARC_NA(0.00)[freebsd.org]; R_SPF_SOFTFAIL(0.00)[~all:c]; NEURAL_SPAM_SHORT(0.62)[0.620]; NEURAL_HAM_LONG(-0.89)[-0.888]; TO_MATCH_ENVRCPT_SOME(0.00)[]; MLMMJ_DEST(0.00)[freebsd-current]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_COUNT_TWO(0.00)[2]; ASN(0.00)[asn:27348, ipnet:162.251.186.0/24, country:US]; RCVD_TLS_ALL(0.00)[] X-ThisMailContainsUnwantedMimeParts: N On Sat, Apr 16, 2022 at 09:19:57AM -0400, Michael Butler wrote: M> > Michael, can you please confirm or decline that you see the packets M> > that are dropped when you tcpdump on lo0? M> M> All the jails are aliased to share a single bridge interface. That M> results in the route to each jail being on lo0 so .. probably :-) This probably is somehow related to bridge. Can you please help me providing minimal configuration of bridge/jails where the problem shows up? -- Gleb Smirnoff