From owner-freebsd-net  Thu Jul  2 17:02:08 1998
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To: Graeme Brown <graeme.brown@bt-sys.bt.co.uk>
cc: "FreeBSD-Net (FreeBSD.Org) List" <freebsd-net@FreeBSD.ORG>
Subject: Re: Which version of IGMP is implemented in FreeBSD-2.2.6 kernel ? 
In-reply-to: Your message of "Thu, 02 Jul 98 09:01:44 PDT."
             <n1312723698.24600@maczebedee> 
Date: Thu, 2 Jul 1998 17:00:57 PDT
From: Bill Fenner <fenner@parc.xerox.com>
Message-Id: <98Jul2.170109pdt.177515@crevenia.parc.xerox.com>
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FreeBSD's client-side IGMP has been v2 since release 2.1.0 .  
If FreeBSD is being used as the router, then it's mrouted's
IGMP implementation that you're worried about, which has
been v2 since mrouted version 3.0 .

Both the client and the router have to speak IGMPv2 for fast
leave to work, so it sounds pretty likely that your client is
speaking IGMPv1.

  Bill

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