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To: "Ron G. Minnich" <rminnich@sarnoff.com>
cc: hackers@freebsd.org
Subject: Re: multicast config confusion: can't get mrouted to work 
In-reply-to: Your message of "Fri, 09 Feb 96 08:55:55 PST."
             <Pine.SUN.3.91.960209115224.20566A-100000@terra> 
Date: Sat, 10 Feb 1996 12:19:33 PST
From: Bill Fenner <fenner@parc.xerox.com>
Message-Id: <96Feb10.121941pst.177478@crevenia.parc.xerox.com>
Sender: owner-hackers@freebsd.org
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In message <Pine.SUN.3.91.960209115224.20566A-100000@terra> you write:
>[mrouted says "can't forward; no enabled vifs"]
>
>Here's a sample ifconfig -a
>lp0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> mtu 1500

lp0 is multicast-capable but is down.

>ep0: flags=863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX> mtu 1500
>        inet 130.33.10.216 netmask 0xfffff800 broadcast 130.33.15.255

ep0 is not multicast-capable; this driver has been kind of in limbo for a
while and several different sets of multicast patches have been floating
around.  If you are running -current, one version of the patches got
committed on January 29th, but there have been enough other changes that
you can't just grab the if_ep.c out of -current.  You could *try* applying
just these patches to your sources; check out
http://www.freebsd.org/cgi-bin/cvsweb/src/sys/i386/isa/if_ep.c?r1=1.38?r2=1.39
for the diffs that got put into -current.

>lo0: flags=8009<UP,LOOPBACK,MULTICAST> mtu 16384
>        inet 127.0.0.1 netmask 0xff000000 

lo0 is loopback so gets ignored.

>sl0: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu 552

sl0 is multicast-capable but is down.

>tun0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500

tun0 is multicast-capable but is down.

I don't see any enabled vifs either.  What is it that you *want* to do
with mrouted?  Even after you get the multicast-capable ep0, you will
still only have a single enabled vif.

  Bill