From owner-freebsd-multimedia Tue May 16 7:57:30 2000 Delivered-To: freebsd-multimedia@freebsd.org Received: from mf003.infoweb.ne.jp (mf003.infoweb.ne.jp [210.131.99.13]) by hub.freebsd.org (Postfix) with ESMTP id 7EC7537B97A for ; Tue, 16 May 2000 07:57:27 -0700 (PDT) (envelope-from fwkg7679@mb.infoweb.ne.jp) Received: from amdk6.amdk6.nodmain.noroot by mf003.infoweb.ne.jp (8.9.3+3.2W/3.7W-10/13/99) with ESMTP id XAA04844; Tue, 16 May 2000 23:57:18 +0900 Message-Id: <200005161457.XAA04844@mf003.infoweb.ne.jp> Date: Wed, 17 May 2000 00:01:41 +0900 From: KUROSAWA Takahiro To: larse@isi.edu Cc: freebsd-multimedia@freebsd.org Subject: Re: Fwd: Re: FreeBSD-4.0 & CS461x & rat/vat In-Reply-To: In your message of "Fri, 12 May 2000 17:01:06 -0700 (PDT)" <14620.39746.774400.21559@hbo.isi.edu> References: <14616.18236.968899.283451@hbo.isi.edu> <14618.4634.680064.72159A@rina> <14620.39746.774400.21559@hbo.isi.edu> User-Agent: Wanderlust/2.2.18 (Please Forgive Me) WEMI/1.13.7 (Shimada) FLIM/1.13.2 (Kasanui) MULE XEmacs/21.2 (beta32) (Kastor & Polydeukes) (i386-pc-freebsdelf5.0) MIME-Version: 1.0 (generated by WEMI 1.13.7 - "Shimada") Content-Type: text/plain; charset=US-ASCII Sender: owner-freebsd-multimedia@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Lars> And this is where it hangs. I doubt this new problem is newpcm related. Lars> It seems like rat cannot correctly set up the mcast bus between its Lars> helper processes - have there been multicast/route/network changes Lars> been committed to -STABLE recently that could explain this? I suspect recent "delayed checksum" changes in sys/netinet broke multicast code. I've found multicast loopback packets always dropped because of bad UDP checksum, but couldn't find out why the checksum was always bad. Here is an ad hoc workaround for this problem: # sysctl -w net.inet.udp.checksum=0 -- Takahiro Kurosawa To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message