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Date:      Sat, 28 Oct 2000 06:55:45 -0700 (PDT)
From:      Lixia Zhang <lixia@CS.UCLA.EDU>
To:        Brian Zill <bzill@microsoft.com>
Cc:        "'f.johan.beisser'" <jan@caustic.org>, Brad Huntting <huntting@hunkular.glarp.com>, snap-users@kame.net, freebsd-questions@freebsd.org, ngtrans@sunroof.eng.sun.com, ipng@sunroof.eng.sun.com, yjin@CS.UCLA.EDU
Subject:   Re: 6over4 for KAME (FreeBSD)
Message-ID:  <200010281355.GAA20174@aurora.cs.ucla.edu>
In-Reply-To: <CB7153628BD3724096258CBFD70AA891041DB8@red-msg-04.redmond.corp.microsoft.com> from Brian Zill at "Oct 27, 2000 02:40:23 pm"

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> 6to4 and 6over4, while having unfortunately similar names, are quite
> different things.
> 
> 6to4 is a form of automatic IPv6 tunneling over IPv4.  The IPv4 address of
> the "home" end of the tunnel is encoded into the IPv6 prefix.  See
> draft-ietf-ngtrans-6to4-07.txt.
> 
> 6over4 is another IPv6 over "foo", where "foo" in this case is a
> multicast-enabled IPv4 network, instead of say Ethernet or FDDI.  See RFC
> 2529.
> 
> My recollection is that an implementation of 6over4 for some BSD flavor
> exists, since I recall someone performing some interoperability testing
> between our implementation and that implementation.  UCLA sounds
> familiar.

yes we did an implementation a few years back, I also recall the
interoperability test.
Someone from 3com picked up our code?
Yixin, can you recall more details?

Lixia



> Aren't two interoperating implementations a requirement for Proposed
> Standard? (RFC 2529 is at PS) I'm not aware of any others offhand, but it
> wouldn't surprise me if there were some.
> 
> --Brian
> 
> > -----Original Message-----
> > From: f.johan.beisser [mailto:jan@caustic.org]
> > Sent: Friday, 27 October, 2000 12:32
> > To: Brad Huntting
> > Cc: snap-users@kame.net; freebsd-questions@FreeBSD.ORG;
> > ngtrans@sunroof.eng.sun.com; ipng@sunroof.eng.sun.com
> > Subject: Re: 6over4 for KAME (FreeBSD)
> > 
> > 
> > 
> > i'm not sure if this is what you mean, but:
> > 
> > http://www.kfu.com/~nsayer/6to4/
> > 
> > also, i think that it is documented on http://www.kame.net.
> > 
> > of course, i oculd very well be talking out of my butt.
> > 
> > -- jan
> > 
> > 
> > 
> > On Fri, 27 Oct 2000, Brad Huntting wrote:
> > 
> > > 
> > > Has anyone started writing a 6over4 (rfc2529) driver for KAME and/or
> > > FreeBSD?
> > > 
> > > I have a pointer to a UCLA project called "Virtual Ethernet" by
> > > Quang Nguyen (no email address given), but it was written for the
> > > Inria stack and FreeBSD2.  If there's nothing else available, I
> > > may use this as a guide.
> > > 
> > 
> > 
> > -------/ f. johan beisser /--------------------------------------+
> >   http://caustic.org/~jan                      jan@caustic.org
> >    "Never laugh at someone until you've walked a mile in their
> >          shoes. Then laugh. For you are a mile away, and
> >                       you have their shoes."
> > 
> > 
> > --------------------------------------------------------------------
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> > 
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