From owner-freebsd-questions Sat Jan 26 18:14:11 2002 Delivered-To: freebsd-questions@freebsd.org Received: from sigbus.com (we-24-126-148-218.we.mediaone.net [24.126.148.218]) by hub.freebsd.org (Postfix) with ESMTP id 5B35937B404; Sat, 26 Jan 2002 18:14:06 -0800 (PST) Received: (from henrich@localhost) by sigbus.com (8.11.1/8.11.1) id g0R2DDa84683; Sat, 26 Jan 2002 18:13:13 -0800 (PST) (envelope-from henrich) Date: Sat, 26 Jan 2002 18:13:13 -0800 From: Charles Henrich To: mark tinguely Cc: freebsd-multimedia@FreeBSD.ORG, freebsd-questions@FreeBSD.ORG Subject: Re: MBone/mrouted troubles Message-ID: <20020126181313.A84662@sigbus.com> Mail-Followup-To: mark tinguely , freebsd-multimedia@FreeBSD.ORG, freebsd-questions@FreeBSD.ORG References: <20020124200726.B70786@sigbus.com> <200201251337.g0PDbOu29231@web.cs.ndsu.nodak.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <200201251337.g0PDbOu29231@web.cs.ndsu.nodak.edu>; from tinguely@web.cs.ndsu.nodak.edu on Fri, Jan 25, 2002 at 07:37:24AM -0600 X-Operating-System: FreeBSD 4.2-RELEASE X-PGP-Fingerprint: 1024/F7 FD C7 3A F5 6A 23 BF 76 C4 B8 C9 6E 41 A4 4F X-GPG-Fingerprint: EA4C AB9B 0C38 17C0 AB3F 11DE 41F6 5883 41E7 4F49 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On the subject of Re: MBone/mrouted troubles, mark tinguely stated: I believe thats it. I moved the mrouted process from my local machine (which is running vic/sdr, etc..) to another and it works fine. Hopefully this patch will make it into 4.5 though, its a major annoyance for personal leaf nodes! > could you send the contents of both of your /etc/mrouted.conf and what is > the TTL on the vic session? > > There was a bug discovered in FreeBSD 4.4 in MCAST forwarding when a local > session is also went out the tunnel. The UDP checksum was not calculated on > the forwarding packet. I do not know when the hardware checksum feature was > added to FreeBSD but that may have been FreeBSD 4.2 also. The patch was not > picked up in FreeBSD 4.5 (at least it is not in RC1). To look for this bug, > perform a tcpdump of the tunnel's contents and you will see UDP checksum > errors. If you have this problem, I can give you a simplified version of > Bill Fenner's patch. > > --mark tinguely. Charles Henrich Eon Entertainment henrich@msu.edu http://www.sigbus.com:81/~henrich To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message