From owner-freebsd-hackers Thu Dec 6 8:12:18 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from hoolan.org (db217.csie.ncu.edu.tw [140.115.50.217]) by hub.freebsd.org (Postfix) with ESMTP id 78E4E37B419 for ; Thu, 6 Dec 2001 08:12:08 -0800 (PST) Received: from localhost (jeff@localhost [127.0.0.1]) by hoolan.org (8.11.6/8.11.6) with ESMTP id fB6GBZu90167; Fri, 7 Dec 2001 00:11:35 +0800 (CST) (envelope-from jeff@hoolan.org) Date: Fri, 7 Dec 2001 00:11:35 +0800 (CST) From: Yung-Sheng Tang X-Sender: jeff@hoolan.org To: Terry Lambert Cc: freebsd-hackers@freebsd.org Subject: Re: UDP checksum error after encapsulating multicast packet In-Reply-To: <3C0F86D4.77A6748B@mindspring.com> Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Thu, 6 Dec 2001, Terry Lambert wrote: > On the other hand, you should also examine the packet in > from the other machine, as the checksum might have started > out broken. If so, an incremental update wouldn't correct > it. I am sorry that I don't get what you mean well. The multicast-sending AP, mrouted and tcpdump all run on the same machine. From tcpdump result, the multicast AP gives the right checksum, whereas encapsulating module(?) gives the wrong checksum, right? So, What next I should examine for? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message