From owner-freebsd-net@freebsd.org Sat Dec 8 11:16:46 2018 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 140E61310995 for ; Sat, 8 Dec 2018 11:16:46 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 9A696780F0 for ; Sat, 8 Dec 2018 11:16:45 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 5CEA4131098C; Sat, 8 Dec 2018 11:16:45 +0000 (UTC) Delivered-To: net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3A5AF1310989 for ; Sat, 8 Dec 2018 11:16:45 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id CBA4B780E9 for ; Sat, 8 Dec 2018 11:16:44 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id CD6FC11C69 for ; Sat, 8 Dec 2018 11:16:43 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id wB8BGhgc089509 for ; Sat, 8 Dec 2018 11:16:43 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id wB8BGhng089508 for net@FreeBSD.org; Sat, 8 Dec 2018 11:16:43 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 233535] Machines lost ping6 after adding same IPv6 address Date: Sat, 08 Dec 2018 11:16:41 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: ae@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-Rspamd-Queue-Id: 9A696780F0 X-Spamd-Result: default: False [-2.98 / 15.00]; local_wl_from(0.00)[freebsd.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.98)[-0.983,0]; ASN(0.00)[asn:10310, ipnet:2001:1900:2254::/48, country:US]; NEURAL_HAM_LONG(-0.99)[-0.994,0] X-Rspamd-Server: mx1.freebsd.org 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: Sat, 08 Dec 2018 11:16:46 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D233535 --- Comment #9 from Andrey V. Elsukov --- It seems the problem is even worse. The system leaves multicast groups after some time without any reconfiguration and stops to reply to ND6 NS. 1. ifmcstat before test: em0: inet 10.9.8.6 igmpv2 group 224.0.0.1 mode exclude mcast-macaddr 01:00:5e:00:00:01 inet6 fe80::222:4dff:fe6a:5eb9%em0 scopeid 0x1 mldv1 flags=3D2 group ff01::1%em0 scopeid 0x1 mode exclude mcast-macaddr 33:33:00:00:00:01 group ff02::1%em0 scopeid 0x1 mode exclude mcast-macaddr 33:33:00:00:00:01 2. ifconfig em0 inet6 fc00::2 3. ifmcstat em0: inet6 fe80::222:4dff:fe6a:5eb9%em0 scopeid 0x1 mldv1 flags=3D2 group ff02::2:d4f1:c447%em0 scopeid 0x1 mode exclude mcast-macaddr 33:33:d4:f1:c4:47 group ff02::2:ffd4:f1c4%em0 scopeid 0x1 mode exclude mcast-macaddr 33:33:ff:d4:f1:c4 group ff02::1:ff00:2%em0 scopeid 0x1 mode exclude mcast-macaddr 33:33:ff:00:00:02 inet 10.9.8.6 igmpv2 group 224.0.0.1 mode exclude mcast-macaddr 01:00:5e:00:00:01 inet6 fe80::222:4dff:fe6a:5eb9%em0 scopeid 0x1 mldv1 flags=3D2 group ff01::1%em0 scopeid 0x1 mode exclude mcast-macaddr 33:33:00:00:00:01 group ff02::1%em0 scopeid 0x1 mode exclude mcast-macaddr 33:33:00:00:00:01 4. Wait about 1 minute 5. ifmcstat=20 em0: inet 10.9.8.6 igmpv2 group 224.0.0.1 mode exclude mcast-macaddr 01:00:5e:00:00:01 inet6 fe80::222:4dff:fe6a:5eb9%em0 scopeid 0x1 mldv1 flags=3D2 group ff01::1%em0 scopeid 0x1 mode exclude mcast-macaddr 33:33:00:00:00:01 group ff02::1%em0 scopeid 0x1 mode exclude mcast-macaddr 33:33:00:00:00:01 6. On the second host: ndp -c && ping6 fc00::2 =3D> no reply --=20 You are receiving this mail because: You are the assignee for the bug.=