From: David Stevens <dlstevens@us.ibm.com>
To: David Miller <davem@davemloft.net>
Cc: fbl@redhat.com, herbert@gondor.hengli.com.au,
netdev@vger.kernel.org, netdev-owner@vger.kernel.org
Subject: Re: restoring IP multicast addresses when restarting the interface.
Date: Tue, 24 Apr 2012 14:28:33 -0700 [thread overview]
Message-ID: <OFB8B0B17A.86602877-ON882579EA.00741868-882579EA.0075F72B@us.ibm.com> (raw)
In-Reply-To: <20120424.170004.1811627706738841106.davem@davemloft.net>
netdev-owner@vger.kernel.org wrote on 04/24/2012 02:00:04 PM:
> From: David Miller <davem@davemloft.net>
> >> I don't see why they should disappear when the interface goes
> >> down and then comes back up since these ultimately come from
> >> application sockets which continue to exist after a down/up.
> >
> > Yeah, but that's not how things used to work before, so my
> > question is if the kernel should be responsible for keeping
> > the subscription or the application.
> >
> > If the admin puts down the interface and remove the module,
> > for instance, then the multicast subscription is gone.
> > Should the application monitor for that then?
> >
> > David? Any thoughts?
>
> David Stevens at IBM and Herbert at the current multicast
> experts, so I will defer to them.
I think restoring the hardware multicast filter on device up
is useful, desirable and not a bug. :-)
+-DLS
next prev parent reply other threads:[~2012-04-24 21:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-21 0:25 restoring IP multicast addresses when restarting the interface Flavio Leitner
2012-04-23 12:14 ` Herbert Xu
2012-04-24 18:30 ` Flavio Leitner
2012-04-24 21:00 ` David Miller
2012-04-24 21:28 ` David Stevens [this message]
2012-04-24 22:19 ` Flavio Leitner
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