From owner-freebsd-hackers Fri Dec 7 2:49: 5 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 5E3D937B417 for ; Fri, 7 Dec 2001 02:49:00 -0800 (PST) Received: from localhost (jeff@localhost [127.0.0.1]) by hoolan.org (8.11.6/8.11.6) with ESMTP id fB7AmP197246; Fri, 7 Dec 2001 18:48:25 +0800 (CST) (envelope-from jeff@hoolan.org) Date: Fri, 7 Dec 2001 18:48:24 +0800 (CST) From: Yung-Sheng Tang X-Sender: jeff@hoolan.org To: Bill Fenner Cc: freebsd-hackers@freebsd.org Subject: Re: UDP checksum error after encapsulating multicast packet In-Reply-To: <200112070421.UAA07833@windsor.research.att.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, Bill Fenner wrote: > > >However, there does exist one case that have good checksum, no matter I > >apply the patch or not. > > Is the local system a member of one or the other of these groups? > i.e. does it work when the local system is a member, or not, or > is that not a predictor of the behavior? Actually, as long as the multicast packet sender does not run on the same machine with mrouted, everything works correctly. If the packet is issued from the same machine, it gets udp checksum error after being encapsulated. That's the whole fact I found till now. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message