From: Andrew Morton <akpm@linux-foundation.org>
To: netdev@vger.kernel.org
Cc: bugme-daemon@bugzilla.kernel.org, jani@ubuntu.com
Subject: Re: [Bugme-new] [Bug 12109] New: Multicast packets with TTL 0 sent out if not local listener
Date: Thu, 27 Nov 2008 09:34:12 -0800 [thread overview]
Message-ID: <20081127093412.9536e5cc.akpm@linux-foundation.org> (raw)
In-Reply-To: <bug-12109-10286@http.bugzilla.kernel.org/>
(switched to email. Please respond via emailed reply-to-all, not via the
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On Thu, 27 Nov 2008 02:32:27 -0800 (PST) bugme-daemon@bugzilla.kernel.org wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=12109
>
> Summary: Multicast packets with TTL 0 sent out if not local
> listener
> Product: Networking
> Version: 2.5
> KernelVersion: 2.6.27
> Platform: All
> OS/Version: Linux
> Tree: Mainline
> Status: NEW
> Severity: normal
> Priority: P1
> Component: IPV4
> AssignedTo: shemminger@linux-foundation.org
> ReportedBy: jani@ubuntu.com
>
>
> According to what I have read, setting the IP_MULTICAST_TTL option to 0 on a
> multicast sending socket should prevent it sending to the network, and be
> destined only for listeners on the local computer.
>
> This only seems to work if there is a local listener on that particular group.
> If such a listener app is stopped other computers on the LAN get the messages,
> and tcpdump -v shows they have TTL 0
>
> I am not sure if this is intended behaviour but it is unexpected.
>
>
parent reply other threads:[~2008-11-27 17:34 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <bug-12109-10286@http.bugzilla.kernel.org/>]
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