From owner-freebsd-stable@freebsd.org Thu Jul 12 22:30:34 2018 Return-Path: Delivered-To: freebsd-stable@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 1CE261028F1E for ; Thu, 12 Jul 2018 22:30:34 +0000 (UTC) (envelope-from lists@searchy.net) Received: from mx.searchy.nl (mx.searchy.nl [IPv6:2a00:1280:8000:4::9]) (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 A689F84068 for ; Thu, 12 Jul 2018 22:30:33 +0000 (UTC) (envelope-from lists@searchy.net) Received: from mx.searchy.nl (mx.searchy.nl [79.143.214.224]) by mx.searchy.nl (Postfix) with ESMTP id 4942413987D for ; Thu, 12 Jul 2018 22:30:31 +0000 (UTC) X-Virus-Scanned: amavisd-new at mx.searchy.nl X-Spam-Flag: NO X-Spam-Score: -3 X-Spam-Level: X-Spam-Status: No, score=-3 tagged_above=-99 required=5 tests=[ALL_TRUSTED=-1, BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1] autolearn=ham autolearn_force=no Authentication-Results: mx.searchy.nl (amavisd-new); dkim=pass (1024-bit key) header.d=searchy.net Received: from mx.searchy.nl ([79.143.214.224]) by mx.searchy.nl (mx.searchy.nl [79.143.214.224]) (amavisd-new, port 10026) with ESMTP id vekD5Vbf2aNb for ; Thu, 12 Jul 2018 22:30:29 +0000 (UTC) Received: from [IPv6:2001:470:79dd:3:f960:762b:6ba9:6187] (unknown [IPv6:2001:470:79dd:3:f960:762b:6ba9:6187]) by mx.searchy.nl (Postfix) with ESMTPSA id 5346D139808 for ; Thu, 12 Jul 2018 22:30:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=searchy.net; s=default; t=1531434629; bh=OpkwtgnKP0jgTDfcba3KnwsuTddPOV94o+TsSTbVRAg=; h=To:From:Subject:Date; b=OunSNDxu+DEzfi3mtqPOEICFQpW4NLepQQ5eL0UcWh7xmCrOcLgovZWkGXcGuhDzY OQUgqUBMREyuBTm9Z6+JXBbBAia/YsmHpCHRUZiPBZYRnsOHaYworiWu7TDAXQnoIS XD6oOnfwXfOCEBUXF3w7N4G0Ir61lA4YZ3nZxUwk= To: FreeBSD Stable From: "Frank de Bot (lists)" Subject: Removing IPv6 address causes all IPv6 traffic to stop working Message-ID: <0a96ce18-982e-ac9b-eaab-d9cf2df02d73@searchy.net> Date: Fri, 13 Jul 2018 00:30:28 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0 SeaMonkey/2.49.2 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Jul 2018 22:30:34 -0000 On a older server running FreeBSD 10.2 i have a number of jails. For migration to FreeBSD I'm planning to shutdown the jail, move the data to the new server and spin up the jail there. IP addresses are alse moved. When I remove an IPv6 address with the following command 'ifconfig em0 inet6 v6address/48 delete', all IPv6 traffic on the server stops working. I can reach IPv6 from outside to the server and from the server to outside, but everything on the server (jail to jail for example) immediatly stops working. IPv4 works normally Unfortunately it's not feasible to bing-bang migrate everything, ignoring ipv6 is not possible because a lot of the jails interact with each other with ipv6 (some even exclusivly) What can cause this? Regards, Frank de Bot