From owner-freebsd-net@FreeBSD.ORG Sun May 8 14:05:21 2005 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B5A3A16A4E3 for ; Sun, 8 May 2005 14:05:21 +0000 (GMT) Received: from mss1.myactv.net (mss1.myactv.net [24.89.0.26]) by mx1.FreeBSD.org (Postfix) with SMTP id E3DF643D6A for ; Sun, 8 May 2005 14:05:20 +0000 (GMT) (envelope-from patrickdk@patrickdk.com) Received: (qmail 28241 invoked from network); 8 May 2005 14:05:14 -0000 Received: from dyn-19-218.myactv.net (24.89.19.218) by new.mss1.myactv.net with SMTP; 8 May 2005 14:05:14 -0000 Date: Sun, 8 May 2005 14:05:10 +0000 (UTC) From: Patrick Domack X-X-Sender: dswett@server.dswett.patrickdk.com To: freebsd-net@freebsd.org Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Subject: tap interface and locally generated packets X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: patrickdk@patrickdk.com List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 08 May 2005 14:05:21 -0000 I have been working with tap interfaces, bridging and openvpn Bridging works perfectly, and openvpn does too Packet pings from the tap interface works to any ip address, on the local machine or computer on the bridged network Attempting to make a tcp connection works for bridged network, but not the machine the tap interface is on I have found this is due to tcp checksums not being generated, Packets recieved over the tap interface on the client machine have blank (bad) checksums. I have looked at the source and it seems there is no interface to add the checksums to be generated for the tap interface.