From owner-freebsd-net@freebsd.org Tue Jan 5 14:49:21 2021 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 A7AA84E6AB0 for ; Tue, 5 Jan 2021 14:49:21 +0000 (UTC) (envelope-from vas@sibptus.ru) Received: from admin.sibptus.ru (admin.sibptus.ru [IPv6:2001:19f0:5001:21dc::10]) (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 4D9Fkm6jQ8z4Y4k for ; Tue, 5 Jan 2021 14:49:20 +0000 (UTC) (envelope-from vas@sibptus.ru) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sibptus.ru; s=20181118; h=In-Reply-To:Message-ID:Subject:To:From:Date; bh=uGaNfA5rPZgmJ/PGKLDEOnGCyKJWWJVPnH8EWkoNXzg=; b=MIk12Ou7PBdxKosYw22YQLlKSm NvDK0GQsw3jBRMvORjAiqnXtWzAn+RsjIQdb/EqvKuzhm9fvXEUzTwKr93oXP1pqBdL+tI88CpnZQ /xZJ9HhrwPcrgdy3pbImbrGk0zchh71219kKfnfNyKgUxIte6+sfXMceT+sVEq8nkZ64=; Received: from vas by admin.sibptus.ru with local (Exim 4.94 (FreeBSD)) (envelope-from ) id 1kwneA-0003ue-QL; Tue, 05 Jan 2021 21:49:18 +0700 Date: Tue, 5 Jan 2021 21:49:18 +0700 From: Victor Sudakov To: Lutz Donnerhacke Cc: freebsd-net@freebsd.org Subject: Re: FreeBSD does not reply to IPv6 Neighbor Solicitations Message-ID: <20210105144918.GA14838@admin.sibptus.ru> References: <20210105031528.GA91534@admin.sibptus.ru> <00a101d6e33b$96edf0c0$c4c9d240$@donnerhacke.de> <20210105104650.GA7688@admin.sibptus.ru> <00b601d6e35a$115a4a20$340ede60$@donnerhacke.de> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="opJtzjQTFsWo+cga" Content-Disposition: inline In-Reply-To: <00b601d6e35a$115a4a20$340ede60$@donnerhacke.de> X-PGP-Key: http://admin.sibptus.ru/~vas/ X-PGP-Fingerprint: 10E3 1171 1273 E007 C2E9 3532 0DA4 F259 9B5E C634 X-Rspamd-Queue-Id: 4D9Fkm6jQ8z4Y4k X-Spamd-Bar: ------ Authentication-Results: mx1.freebsd.org; dkim=pass header.d=sibptus.ru header.s=20181118 header.b=MIk12Ou7; dmarc=pass (policy=none) header.from=sibptus.ru; spf=pass (mx1.freebsd.org: domain of vas@sibptus.ru designates 2001:19f0:5001:21dc::10 as permitted sender) smtp.mailfrom=vas@sibptus.ru X-Spamd-Result: default: False [-6.10 / 15.00]; ARC_NA(0.00)[]; RBL_DBL_DONT_QUERY_IPS(0.00)[2001:19f0:5001:21dc::10:from]; R_DKIM_ALLOW(-0.20)[sibptus.ru:s=20181118]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.20)[multipart/signed,text/plain]; SPAMHAUS_ZRD(0.00)[2001:19f0:5001:21dc::10:from:127.0.2.255]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[sibptus.ru:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[sibptus.ru,none]; NEURAL_HAM_SHORT(-1.00)[-1.000]; SIGNED_PGP(-2.00)[]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; RCVD_TLS_LAST(0.00)[]; ASN(0.00)[asn:20473, ipnet:2001:19f0:5000::/38, country:US]; RCVD_COUNT_TWO(0.00)[2]; MAILMAN_DEST(0.00)[freebsd-net] X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 05 Jan 2021 14:49:21 -0000 --opJtzjQTFsWo+cga Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Lutz Donnerhacke wrote: > > > May you be able to capture the icmp6 traffic of this interface with > > > respect to ND? I'm really interested in seeing, that the box does > > > not respond to a given NS query. > >=20 > > Here you are http://admin.sibptus.ru/~vas/nd1.pcapng >=20 > The device, where the capture was taken does not respond to the NS packet. So your interpretation agrees with mine, that's great. > This might be caused by: > a) the device has a different configured IP address, than requested I have already published the output of `ifconfig re1`, here it is again, do you think anything important is missing? This is the very interface where the capture was taken: $ ifconfig re1 re1: flags=3D8843 metric 0 mtu 1500 options=3D8209b ether c4:12:f5:33:c9:7c inet 192.168.170.5/24 broadcast 192.168.170.255 inet6 fe80::c612:f5ff:fe33:c97c%re1/64 scopeid 0x2 inet6 2001:470:ecba:3::5/64 media: Ethernet autoselect (1000baseT ) status: active nd6 options=3D21 $ > b) the network card does not listen to the multicast group, which is > used by the request=20 Why could that be? Hardware problem or software/FreeBSD glitch? > (you see it only due to the promisc mode of the > capture). But this is unlikely (due to the promisc mode) > c) your system is broken Very likely. That's why I'm here looking for advice and enlightenment. --=20 Victor Sudakov, VAS4-RIPE, VAS47-RIPN 2:5005/49@fidonet http://vas.tomsk.ru/ --opJtzjQTFsWo+cga Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEcBAEBAgAGBQJf9HxuAAoJEA2k8lmbXsY0QRcH/2EIH3qFXfZUzLY9Udy53LmT uRnwpNQVVhgHZG/RrPTXoqn/ecpza7E2rRGvv7VFmPcShZ7QTeEto8nW3hRmjkRf 1ex6QurJ9CYrD1hs8VSJv/Auim8owIRHFJEA1pCt5eOCRmwtvAN+vkDE+MlvPHN8 KKI/dvrtelQmV3sG+M4pY5zYhTW3t3UcX0S4xYwARFs0EFBqTLRNrApeoAVYAKhc q+EBZ0cC5kwmSNWESm17K8dkDAPW+cX1T31TbCOK2CsjTowhFtEJtyFLcGpx0dzt w0T4QnG4FUBaImj7LiaiUgXOcdXwPMJ7//ng4y2ZbFzuq/brO3EDoYgY7STFqPw= =mE77 -----END PGP SIGNATURE----- --opJtzjQTFsWo+cga--