From owner-freebsd-net@FreeBSD.ORG Wed Jul 9 14:33:52 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 A35C31065671 for ; Wed, 9 Jul 2008 14:33:52 +0000 (UTC) (envelope-from sclark46@earthlink.net) Received: from elasmtp-dupuy.atl.sa.earthlink.net (elasmtp-dupuy.atl.sa.earthlink.net [209.86.89.62]) by mx1.freebsd.org (Postfix) with ESMTP id 760C48FC2C for ; Wed, 9 Jul 2008 14:33:52 +0000 (UTC) (envelope-from sclark46@earthlink.net) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=bRFyh/J1EqOREbsGtF/0bXnX+sj6/NOXPqcNpBMhsAcBnDxSDFPlJr8KFNtNbR5z; h=Received:Message-ID:Date:From:Reply-To:User-Agent:MIME-Version:To:Subject:Content-Type:Content-Transfer-Encoding:X-ELNK-Trace:X-Originating-IP; Received: from [24.144.77.185] (helo=joker.seclark.com) by elasmtp-dupuy.atl.sa.earthlink.net with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.67) (envelope-from ) id 1KGaOU-0003je-Ov for freebsd-net@freebsd.org; Wed, 09 Jul 2008 10:11:42 -0400 Message-ID: <4874C71D.5000204@earthlink.net> Date: Wed, 09 Jul 2008 10:11:41 -0400 From: Stephen Clark User-Agent: Thunderbird 2.0.0.14 (X11/20080501) MIME-Version: 1.0 To: freebsd-net@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-ELNK-Trace: a437fbc6971e80f61aa676d7e74259b7b3291a7d08dfec79ddf1086972d61ebe0525a9644b6e934c350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 24.144.77.185 Subject: 6.3-p2 gre X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: sclark46@earthlink.net List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Jul 2008 14:33:52 -0000 Hello List, I am running ospf over a gre/vpn tunnel. When I run tcpdump on the gre interface ospf stops working. I see the following errors in the ospfd log. 2008/07/09 10:05:02 OSPF: *** sendmsg in ospf_write failed to 224.0.0.5, id 0, off 0, len 68, interface gre1, mtu 1412: Network is down 2008/07/09 10:05:12 OSPF: *** sendmsg in ospf_write failed to 224.0.0.5, id 0, off 0, len 68, interface gre1, mtu 1412: Network is down if I then do ifconfig gre1 down;ifconfig gre1 up ospf start workding again. this does not happen on freebsd 4.x Also if I use the -p flag when running tcpdump things seem to be OK and ospf continues to work normally. Why would putting the gre interface in promiscuous mode cause this problem? Steve -- "They that give up essential liberty to obtain temporary safety, deserve neither liberty nor safety." (Ben Franklin) "The course of history shows that as a government grows, liberty decreases." (Thomas Jefferson)