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Date:      Sat, 16 Jun 2007 00:15:35 +0200
From:      Marko Zec <zec@icir.org>
To:        freebsd-current@freebsd.org
Cc:        Poul-Henning Kamp <phk@phk.freebsd.dk>
Subject:   Re: multicast not happy ?
Message-ID:  <200706160015.35344.zec@icir.org>
In-Reply-To: <46730D54.4060207@yahoo.com>
References:  <1494.1181943860@critter.freebsd.dk> <46730D54.4060207@yahoo.com>

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On Saturday 16 June 2007 00:06:12 John Merryweather Cooper wrote:
> Poul-Henning Kamp wrote:
> > In message <46730545.8050005@yahoo.com>, John Merryweather Cooper 
writes:
> >>> Any ideas ?
> >>
> >> # /sbin/route add -static -net 224.0.0.0 -netmask 240.0.0.0 -iface
> >> sis[1|2]
> >>
> >> I had to do this so my OpenSlp would work.
> >
> > I just got to about the same conclusion, only I used:
> >
> > 	route add -net 224.0.0.0/4 127.0.0.1
> >
> > I'd say this is a bug...
>
> I got the idea from a web page with the instructions for setting up
> OpenSlp on Linux.  I note that mDNS seems to need this too.  To me,
> it makes sense because you need an interface to actually receive/send
> multicast on--and that's what 224.0.0.0/4 is for.

An explicit route to send multicast packets wasn't needed in 4.x days - 
having an interface join the target mcast group was enough.

Marko



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