From nobody Wed Jul 19 11:54:23 2023 X-Original-To: net@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 4R5Z403ffLz4dZJj for ; Wed, 19 Jul 2023 11:54:24 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (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 (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4R5Z401SPZz3mbc for ; Wed, 19 Jul 2023 11:54:24 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1689767664; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mNGfKTnhPtjgahQ1HzXu1l0ngo7+/Qiib4PS6CNxLq8=; b=lJq8bJDUX8YJ7XgJNTuBvyrbVy7cxJzZaB5EFgV44xWrNIU2Ybt/4Mji16eN0V5uoqiK5Y zOIzJWp00+qmA4h369nLs3bWrHvN1Cjeqimfe0PqvbPD1d2i2c2HBVoSmH8y3/dI2PPwPO onAdwfDGH4gDJy0vK8I693FjOPApRkV7T1hsDR4jNJt/jYIfC6DvQ5CW840OoDfbJWwrzV BPlYfDIN+PkdDpHnbh/uNe4EF5ooDrxea+sYXZjQsjAjWfPWQLs5GyUaVI1HoS/zrsI6Bs BMnU7k43Xi/UFZ/86eJ3F5iCedRY1Z1CoZZ9j4oImSCEqz2ZVmm9/pKdMs4rqw== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1689767664; a=rsa-sha256; cv=none; b=RyfoYyav2GMHcIaU0rwceLobVazB0WLgSZZs/OentgDWGmE5rn7AjwJzs396G4n+EKrBuC 51qK98V4KPb/P6tQJdxqB3j8aA3EA8bV1uC778L3wnOUuDmJqHl/LtXEhbFffn+22JAqMg BvXMLpvYasMJnXfrrJaW5GjrbBunq+J9/ljBG5naMtIMKPbnb09ZW9at1aQwq/EMNgluOq 4AfQO4eSH0fEvLingw7UUSN3+3oStUgyZze7cwvGokwEf5GmHLvFLkTCLwDj5hUw64ej/G 0SG9GIzuU2f23cJOTRSfymbePVxX8KQ80ni5XrdDd6ljMVrztKZK/HCJfpfG9A== Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (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 did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4R5Z3z6GLVzmX3 for ; Wed, 19 Jul 2023 11:54:23 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 36JBsNkE059062 for ; Wed, 19 Jul 2023 11:54:23 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 36JBsNcL059061 for net@FreeBSD.org; Wed, 19 Jul 2023 11:54:23 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 233683] IPv6 ND neighbor solicitation messages fail to arrive Date: Wed, 19 Jul 2023 11:54:23 +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: 12.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: kp@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 List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@freebsd.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D233683 --- Comment #13 from Kristof Provost --- Re-assigning an IPv6 address that=E2=80=99s already there seems to trigger = this. I=E2=80=99m still investigating, but I believe the problem is that ifconfig= deletes the IP address before setting it again. The delete ends up calling in6_purgeadd= r(), which marks the relevant multicast groups as no longer needed, but leaves t= heir actual removal to mld_fasttimo() (i.e. asynchronously). The IP address gets added again, and either the groups don=E2=80=99t get re= -added or they don=E2=80=99t get marked as needed. This bit I=E2=80=99m still unclear= on, but as I said: I=E2=80=99m still digging. --=20 You are receiving this mail because: You are the assignee for the bug.=