From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=0.7 required=3.0 tests=DATE_IN_PAST_06_12,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INVALID_DATE, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D2272C2D0DC for ; Wed, 1 Jan 2020 16:05:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7745E2073D for ; Wed, 1 Jan 2020 16:05:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ungleich.ch header.i=@ungleich.ch header.b="euTvp7sL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727166AbgAAP7h (ORCPT ); Wed, 1 Jan 2020 10:59:37 -0500 Received: from mx.ungleich.ch ([185.203.112.16]:44066 "EHLO smtp.ungleich.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725792AbgAAP7h (ORCPT ); Wed, 1 Jan 2020 10:59:37 -0500 X-Greylist: delayed 423 seconds by postgrey-1.27 at vger.kernel.org; Wed, 01 Jan 2020 10:59:36 EST Received: from diamond.localdomain (localhost [IPv6:::1]) by smtp.ungleich.ch (Postfix) with ESMTP id 54BD31FD7E for ; Wed, 1 Jan 2020 16:52:32 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ungleich.ch; s=mail; t=1577893952; bh=zGfrLnshDoIQHp/62s5CO+R2M8F9ZM3UTXWKiOsqA+g=; h=From:To:Subject:Date:From; b=euTvp7sLRiBo3trDhhNdb1oTHrxOcPgXiF4rAg5XaxY3/EcCs88VR7uw273Ak5tHL IePcpP+OeITM5rgJnwvacYQVa4L564fR2vmH5Ad31p12nF8yiO3v/FtZO4YmDYSQuu COoznK4JI56dVxtGx8cJQKL2pN/OXsyocC0MRl2WykwrZcesAqwhuP64eNcxo0AeWl KtahsTES01NNJX4F61+p0xOUv3QbWQiwtFDUovOH4AFpQEhfRyK1VGvAHjzMNPN/RE Nkz3rT97dPdgMjeYrIHlctVPaOZFL0YolyhoYq8RD2ObtOiR5kGaDROmYF1tDNbjYq Pz6y3pXSxnICA== Received: by diamond.localdomain (Postfix, from userid 1000) id 4144413E00D0; Wed, 1 Jan 2020 16:52:32 +0100 (CET) User-agent: mu4e 1.3.5; emacs 26.3 From: Nico Schottelius To: netdev@vger.kernel.org Subject: IPv6 addresses stay tentative (Linux 5.4.6, 5.4.7) Date: Wed 01 Jan 2020 04:30:10 PM CET Maildir: /ungleich/sent Message-ID: <87mub7tbr3.fsf@ungleich.ch> MIME-Version: 1.0 Content-Type: text/plain Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org https://roy.marples.name/archives/dhcpcd-discuss/0002774.html p.s.: I am using accept_ra = 2, because forwarding is also enabled. Hello, it seems something in the kernel code changed in regard to setting IPv6 addresses usable (i.e. dad done). Since 5.4.6 IPv6 addresses setup statically or via autoconf (router advertisements) seem so stay in "tentative" state forever. I did not experience this behaviour in 5.3.13 (*) and it seems I am not the only one affected: I turned dhcpcd off to test whether it happens without it and indeed the problem seems to be unrelated to dhcpcd. Does anyone know about a recent change that may cause this behaviour? Best regards, Nico (*) I cannot boot kernels 5.4.x < 5.4.6, as the wifi card does not show up with them. -- Modern, affordable, Swiss Virtual Machines. Visit www.datacenterlight.ch