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Date:      Wed, 23 Jan 2002 12:14:56 -0800
From:      Eli Dart <dart@nersc.gov>
To:        bmah@FreeBSD.ORG
Cc:        "Crist J . Clark" <cjc@FreeBSD.ORG>, Kevin Oberman <oberman@ptavv.es.net>, freebsd-net@FreeBSD.ORG
Subject:   Re: IP multicast time and dhcp 
Message-ID:  <20020123201456.8FEF63B1A3@gemini.nersc.gov>
In-Reply-To: Message from "Bruce A. Mah" <bmah@FreeBSD.ORG>  of "Wed, 23 Jan 2002 11:18:58 PST." <200201231918.g0NJIwu86714@bmah.dyndns.org> 

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In reply to "Bruce A. Mah" <bmah@FreeBSD.ORG> :

> If memory serves me right, Eli Dart wrote:
> 
> > In reply to "Crist J . Clark" <cjc@FreeBSD.ORG> :
> > 
> > > On Tue, Jan 22, 2002 at 05:37:07PM -0800, Eli Dart wrote:
> > > [snip]
> > > > Note that the igmp queries are sent to the multicast address 
> > > > 224.0.0.1, so the laptop is seeing multicast traffic.  The kernel 
> > > > just seems to think that it doesn't have any multicast groups that it 
> > > > cares about.
> > > 
> > > Running mrouted(8)?
> > 
> > Nope.  The environment is all PIM-SM.  If I restart ntpd after the 
> > interface is up, everything works.  It's not (as far as I can tell) a 
> > problem with the multicast infrastructure -- it's local to the laptop.
> 
> Right, you shouldn't need mrouted(8) or any other multicast routing 
> daemon for IGMP to do the right thing.
> 
> Hmmm.  How about a routing table?  Do you have default unicast/
> multicast routes?  (Did I ask you this before?)

There are no default routes when the box comes up.  It comes up with 
only a loopback interface configured.  After dhclient kicks off, a 
default route is added, but before then there is no route that points 
anywhere non-local.

		--eli


> 
> Bruce.
> 
> 
> 
> To Unsubscribe: send mail to majordomo@FreeBSD.org
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