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Date: Thu, 28 Aug 1997 18:11:41 +0200 (MET DST)
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From: Emmanuel Duros <Emmanuel.Duros@sophia.inria.fr>
To: cmott@snake.srv.net
CC: freebsd-questions@FreeBSD.ORG
In-reply-to: <Pine.BSF.3.96.970828085934.12639C-100000@darkstar.home> (message
	from Charles Mott on Thu, 28 Aug 1997 09:00:05 -0700 (MST))
Subject: Re: mrouted configuration: overlapping subnets
Reply-to: Emmanuel.Duros@sophia.inria.fr
Sender: owner-freebsd-questions@FreeBSD.ORG
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>Have you properly set the netmask in your ifconfig lines?

I think so, here they are:

ifconfig -a:

de0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
     inet 138.96.200.2 netmask 0xffff0000 broadcast 138.96.255.255

de1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
     inet 138.96.184.17 netmask 0xfffffff0 broadcast 138.96.184.31

de2: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
     inet 138.96.184.33 netmask 0xfffffff0 broadcast 138.96.184.47

Emmanuel

> 
> I am trying to run mrouted on a freeBSD router (2.2.1-RELEASE)
> for experimentation purposes.
> 
> The router has several subnets and is configured as follow:
> 
> 		
>    138.96.184.16/28	 ----------       138.96.184.32/28
> 	-----------------| router |--------------------
> 		    de1	 ----------  de2
> 			     |de0
> 			     |138.96.0.0/16
> 
> 
> de0 = 138.96.200.2
> de1 = 138.96.184.17
> de2 = 138.96.184.33
> 
> the /etc/mrouted.conf is as follow:
> ------
> #/etc/mrouted.conf
> 
> # do not use interface de0
> # only want to forward multicast between de1 and de2
> 
> phyint de0 disable
> -----
> 
> and when I start mrouted I get the following messages:
> 
> $ mrouted -d 3
> 
> debug level 3
> 14:59:58.491 mrouted version 3.8a
> 14:59:58.503 Getting vifs from kernel interfaces
> 14:59:58.504 installing de0 (138.96.200.2 on subnet 138.96/16) as vif #0 - rate=0
> 14:59:58.504 warning - ignoring de1, same subnet as de0
> 14:59:58.505 warning - ignoring de2, same subnet as de0
> 14:59:58.505 Getting vifs from /etc/mrouted.conf
> 14:59:58.506 can't forward: no enabled vifs
> 
> whereas I specify in the mrouted.conf file that I do not take into
> account the de0 interface.
> 
> Is there a way to configure mrouted to ignore the interface de0 without
> having to change de1 and de2 network numbers?
> 
> thankx,
> Emmanuel