From owner-freebsd-net@FreeBSD.ORG Mon Dec 22 03:15:28 2008 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 87063106564A for ; Mon, 22 Dec 2008 03:15:28 +0000 (UTC) (envelope-from mailnull@mips.inka.de) Received: from mail-in-05.arcor-online.net (mail-in-05.arcor-online.net [151.189.21.45]) by mx1.freebsd.org (Postfix) with ESMTP id 3D5A08FC08 for ; Mon, 22 Dec 2008 03:15:28 +0000 (UTC) (envelope-from mailnull@mips.inka.de) Received: from mail-in-04-z2.arcor-online.net (mail-in-04-z2.arcor-online.net [151.189.8.16]) by mail-in-05.arcor-online.net (Postfix) with ESMTP id 9D3EE1834DE for ; Mon, 22 Dec 2008 04:15:25 +0100 (CET) Received: from mail-in-04.arcor-online.net (mail-in-04.arcor-online.net [151.189.21.44]) by mail-in-04-z2.arcor-online.net (Postfix) with ESMTP id 04DBDABE6E for ; Mon, 22 Dec 2008 04:15:25 +0100 (CET) Received: from lorvorc.mips.inka.de (dslb-088-067-116-226.pools.arcor-ip.net [88.67.116.226]) by mail-in-04.arcor-online.net (Postfix) with ESMTP id C02A91BF397 for ; Mon, 22 Dec 2008 04:15:23 +0100 (CET) Received: from lorvorc.mips.inka.de (localhost [127.0.0.1]) by lorvorc.mips.inka.de (8.14.3/8.14.3) with ESMTP id mBM3FNDV002211 for ; Mon, 22 Dec 2008 04:15:23 +0100 (CET) (envelope-from mailnull@lorvorc.mips.inka.de) Received: (from mailnull@localhost) by lorvorc.mips.inka.de (8.14.3/8.14.3/Submit) id mBM3FNR9002210 for freebsd-net@freebsd.org; Mon, 22 Dec 2008 04:15:23 +0100 (CET) (envelope-from mailnull) From: naddy@mips.inka.de (Christian Weisgerber) Date: Mon, 22 Dec 2008 03:15:23 +0000 (UTC) Message-ID: Originator: naddy@mips.inka.de (Christian Weisgerber) To: freebsd-net@freebsd.org X-Virus-Scanned: ClamAV 0.94.1/8789/Mon Dec 22 01:19:15 2008 on mail-in-04.arcor-online.net X-Virus-Status: Clean Subject: NDP breakage in -CURRENT 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: Mon, 22 Dec 2008 03:15:28 -0000 Something seems to be wrong with IPv6 neighbor discovery. FreeBSD lorvorc.mips.inka.de 8.0-CURRENT FreeBSD 8.0-CURRENT #0: Sat Dec 20 17:46:35 CET 2008 naddy@lorvorc.mips.inka.de:/usr/obj/usr/src/sys/GENERIC amd64 This box is on a network that has IPv6. No exciting configuration, just ipv6_enable=YES and ipv6_defaultrouter and ipv6_ifconfig_nfe0 for a manually configured address. IPv6 with other hosts on the network and beyond works. However, clearing the NDP cache (ndp -c) kills IPv6 connectivity. The cache remains empty. tcpdump shows that neighbor solicitations are sent and advertisement received, but these replies seem to be ignored. ndp -a shows that no entries are added to the cache. This is a new problem. Fallout from arp-v2? -- Christian "naddy" Weisgerber naddy@mips.inka.de