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Subject: Re: anyone ever done multicast AF_UNIX sockets?
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Michael Richardson <mcr@sandelman.ottawa.on.ca>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
In-Reply-To: <200303030005.h2305eWX002798@marajade.sandelman.ottawa.on.ca>
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On Mon, 2003-03-03 at 00:05, Michael Richardson wrote:
>   First, multicast doesn't really work on loopback. I don't recall why...
>   One symptom of this is that one can't use the multicast transport for
> User-Mode-Linux when not "online" (i.e. on the train).

You have to specify you want your multicast packet looped back. By
default multicasts dont loop


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