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Date: Thu, 04 Jan 2001 15:11:48 -0800
From: Wilbert de Graaf <wilbertdg@hetnet.nl>
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Subject: Re: igmp and if_down()
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> * a socket subscribes to some group on the ppp interface, and he sees
> IGMP reports
> * hangs no up, and dials in again and the IGMP messages continue
> 
> He thinks this is not okay, but I'm not sure. You could argue that
> membership on a non-existing interface is impossible. On the other hand,
> it's get more complicated if you do remove membership: are you going to
> inform those sockets on which you removed their membership ?
> 
> What do you think ?

Thinking about it, the FreeBSD works out fine if multicast applications
conclude that something is wrong if they don't get traffic on a socket.
Their action would be to simply close() the socket or remove membership.

Wilbert


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