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Message-ID: <3C3E3AAB.749B1D51@berkeley.innomedia.com>
Date: Thu, 10 Jan 2002 17:06:51 -0800
From: Christopher James <cjames@berkeley.innomedia.com>
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To: Chris Wright <chris@wirex.com>
CC: linux-kernel@vger.kernel.org
Subject: Re: Multicast fails when interface changed
In-Reply-To: <3C3C8D4D.621A4696@berkeley.innomedia.com> <20020109131013.C24733@figure1.int.wirex.com>
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Chris Wright wrote:

> * Christopher James (cjames@berkeley.innomedia.com) wrote:
> > We are running an application that uses multicasting
> > on Linux kernel 2.2.19. The application is
> > connected to two network interfaces for redundancy
> > purposes - only one interface is active at a time.
> > When the application starts up on the first interface,
> > the application can send and receive multicast messages.
> > We then use ifconfig to bring down the first interface,
> > and use ifconfig to bring up the second interface. The application
> > works with the exception that it cannot receive multicast
> > packets (it can still send multicast packets).
>
> does your app use INADDR_ANY for imr_interface when you join the
> multicast group?
>
> -chris

the app (vocal 1.2) does not use INADDR_ANY for imr_interface when
joining the multicast group

-Christopher
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