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Date:      Mon, 7 Dec 1998 20:29:49 +0100
From:      Guido van Rooij <guido@gvr.org>
To:        freebsd-net@FreeBSD.ORG
Subject:   Re: IPv6-over-IPv4 auto tunnel
Message-ID:  <19981207202949.A18531@gvr.org>
In-Reply-To: <2045.913057651@turmeric.itojun.org>; from Jun-ichiro itojun Itoh on Tue, Dec 08, 1998 at 04:07:31AM %2B0900
References:  <19981207193525.A18185@gvr.org> <2045.913057651@turmeric.itojun.org>

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On Tue, Dec 08, 1998 at 04:07:31AM +0900, Jun-ichiro itojun Itoh wrote:
> >> 	One thing we don't implement intentionally is automatic tunnelling
> >> 	(packets to ::10.1.1.1 automatically tunnelled over IPv6-over-IPv4
> >> 	tunnel to 10.1.1.1).
> >Hmm..what does happen when I have a IPV6/V4 host that has an IPV6
> >native address (so no V4 compatible address) that wants to communicate
> >to an IPv4 host? Do I need to set up IPV4 specific routes to
> >a dual stack machine that does the tunneling for me?
> 
> 	Your story has nothing to do with auto tunnel.
> 	Automatic tunnel (::10.1.1.1) is only for communication between two
> 	IPv4/v6 dual stack hosts.

Ah okay. I didnt have my books at hand and I'm kind of new in this area.

> 
> 	For a IPv6-only host (or IPv4/v6 dual stack host without IPv4 address)
> 	to communicate with IPv4 host, you need to have IPv6-to-IPv4
> 	translator (TCP relay server like socks or KAME FAITH, or web proxy)
> 	between two.  There's no magical way.

Thanks for clarifying this.

-Guido

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