From owner-freebsd-net@FreeBSD.ORG Fri Dec 23 09:17:12 2011 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9A1E6106564A for ; Fri, 23 Dec 2011 09:17:12 +0000 (UTC) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from mx1.sbone.de (mx1.sbone.de [IPv6:2a01:4f8:130:3ffc::401:25]) by mx1.freebsd.org (Postfix) with ESMTP id 4AEBB8FC14 for ; Fri, 23 Dec 2011 09:17:12 +0000 (UTC) Received: from mail.sbone.de (mail.sbone.de [IPv6:fde9:577b:c1a9:31::2013:587]) (using TLSv1 with cipher ADH-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mx1.sbone.de (Postfix) with ESMTPS id 7C9AD25D3A05; Fri, 23 Dec 2011 09:17:11 +0000 (UTC) Received: from content-filter.sbone.de (content-filter.sbone.de [IPv6:fde9:577b:c1a9:31::2013:2742]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.sbone.de (Postfix) with ESMTPS id B8431BD79A4; Fri, 23 Dec 2011 09:17:10 +0000 (UTC) X-Virus-Scanned: amavisd-new at sbone.de Received: from mail.sbone.de ([IPv6:fde9:577b:c1a9:31::2013:587]) by content-filter.sbone.de (content-filter.sbone.de [fde9:577b:c1a9:31::2013:2742]) (amavisd-new, port 10024) with ESMTP id 1nvI+KU5I3gS; Fri, 23 Dec 2011 09:17:09 +0000 (UTC) Received: from orange-en1.sbone.de (orange-en1.sbone.de [IPv6:fde9:577b:c1a9:31:cabc:c8ff:fecf:e8e3]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by mail.sbone.de (Postfix) with ESMTPSA id 9A953BD79A3; Fri, 23 Dec 2011 09:17:09 +0000 (UTC) Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: text/plain; charset=us-ascii From: "Bjoern A. Zeeb" In-Reply-To: Date: Fri, 23 Dec 2011 09:17:09 +0000 Content-Transfer-Encoding: quoted-printable Message-Id: References: To: Marcin Cieslak X-Mailer: Apple Mail (2.1084) Cc: freebsd-net@freebsd.org Subject: Re: IPv6 not responding on some aliases (recent 8-stable) X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 23 Dec 2011 09:17:12 -0000 On 22. Dec 2011, at 20:39 , Marcin Cieslak wrote: >>> Bjoern A. Zeeb wrote: >>> I initially thought it's a transport layer issue, since previously = (before >>> I changed configuration) 30%-50% SSH connection attempts succeeded >>> (but prefix was wrong on the "primary" IPv6 address :1000). >>> Now I get no packets on receiving side at all for those "broken" = IPv6 addresses. >>=20 >> Talk to ywhomever is providing in front of you to >> 1) either relax nd6 table limits or >> 2) to route a /64 to your host to only have 1 entry in the neighbour = table. >>=20 >> That's most likely the problem given my crystal ball and experience. >=20 > Thank you for insightful analysis!=20 > Seems like this provider has some significant IPv6 takeup, which is > good news - sorry for hassle, but problems started after upgrade.=20 >=20 > I'll talk to my upstream then, thanks! Please let us know of the results, especially if my crystal ball was = wrong. /bz --=20 Bjoern A. Zeeb You have to have visions! Stop bit received. Insert coin for new address family.=